Architecture
E. Zarghami; S.B. Hosseini; P.S. Sajjadi Qaem Maghami
Abstract
Each program is prepared, approved and implemented according to the policies, goals, facilities, and executive methods of the relevant period. With the advent of new ways of transmitting information and changing facilities and the need to improve the level of graduates, there are necessities that require ...
Read More
Each program is prepared, approved and implemented according to the policies, goals, facilities, and executive methods of the relevant period. With the advent of new ways of transmitting information and changing facilities and the need to improve the level of graduates, there are necessities that require planners to reconsider their plans. The curriculum approved in 1998 for the "Bachelor of Architecture" course is no exception. It seems necessary to achieve the desired goals and coordinate with the new scientific and educational needs and trends, as well as to eliminate the problems and contradictions of review and revision in the above program. The growing needs of the country in the field of construction and quality improvement and the correctness of action in this field depends on the training of experts who can meet the needs of society in this regard. In this article, an attempt has been made to analyze and prove the discrepancies and problems between the goals and its executive methods by presenting the content of the program and to offer them corrective suggestions. In this regard, directing education towards responding as much as possible to the real needs of society and familiarizing students with their own culture and correct architecture has been considered. The Bachelor of Architecture Engineering course is a professional course that aims to foster creative talent, transfer knowledge and general skills of the architectural profession, and achieve general efficiency in this field. In line with the above goal, an attempt has been made to give the maximum possible price to the architectural design projects and the technical and theoretical courses surrounding it in planning this course. Because in the new structure of the field of architecture, which has become a bachelor's and master's degree discontinuous, and the goal is to train architects with general professional efficiency. In this regard, the number of units in accordance with each of the skills and expertise required by the country has been carefully studied and suggestions have been provided in relation to the issues raised.
Architecture
M.Z Kabir; A. Abrisham Foroushan Asl; M. Khan alipour
Abstract
The use of prefabricated panels is one of the new methods of building construction, which has recently been used in the construction of interior and exterior walls, loaders and separators, as well as flooring in construction. This system includes two layers of welded wire mesh. On both sides, a layer ...
Read More
The use of prefabricated panels is one of the new methods of building construction, which has recently been used in the construction of interior and exterior walls, loaders and separators, as well as flooring in construction. This system includes two layers of welded wire mesh. On both sides, a layer of polystyrene is placed and connected to each other by cutters. In the next step, shotcrete concrete is sprayed on these wires and then the surface is polished. The use of 3D panels is increasing due to the importance of lightening, optimizing and saving fuel consumption. In this paper, the combined system of steel frame and lightweight prefabricated panels in the distance from the frame under cyclic loading is analyzed numerically and laboratory. The columns of the frames used are 2IPE120 and the beams are IPE120 and the wall has a height of 120 cm, a width of 64 cm and a thickness of 14 cm, which includes two layers of concrete with a thickness of 4 cm and a layer of polystyrene with a thickness of 6 cm. Numerical analysis is performed with the help of Perform software and in the next step, the formability obtained from numerical and laboratory analysis is compared. Combining a 3D panel system with a bending frame will increase the stiffness and lateral strength of the structure.
Architecture
S. Ali Mohammadi; F. Ali Moradi; E. Jabbari
Abstract
One of the most important pillars of optimized multi-purpose reservoir optimization models is the definition of a penalty or loss function. Due to the variety of operating goals and the complexity of the system, they often use alternative functions instead of using profit and cost functions, which only ...
Read More
One of the most important pillars of optimized multi-purpose reservoir optimization models is the definition of a penalty or loss function. Due to the variety of operating goals and the complexity of the system, they often use alternative functions instead of using profit and cost functions, which only consider certain goals. These functions are the sum of several expressions that reflect the penalty or damages corresponding to the deviation from the desired values (needs). In this case, one of the most important steps in developing an optimization model is to determine the coefficients and capabilities (parameters) of these functions. This paper uses a dynamic stochastic programming (SDP) model to optimize the operation of a multi-purpose tank. With the help of this model, the parameters of the damage function have been evaluated through sensitivity analysis. For this purpose, the criteria of reliability, reversibility, and vulnerability have been used. Studies show that these parameters are much more sensitive to changes in the power of functions than the coefficients of functions.
Architecture
M. Hosseini
Abstract
Penetration is a very important feature in rocks and controls the flow of fluid inside the rocks. In most cells in mechanical laboratories, the water rock moves along the axis of the cylindrical pattern. These cells are used to determine the longitudinal permeability of the rock, while the fluid penetrates ...
Read More
Penetration is a very important feature in rocks and controls the flow of fluid inside the rocks. In most cells in mechanical laboratories, the water rock moves along the axis of the cylindrical pattern. These cells are used to determine the longitudinal permeability of the rock, while the fluid penetrates radially into the rocks around the water and oil wells. The purpose of this study is to design a cell and calibrate a device used to determine the radial permeability of a rock. To test the performance of the test device, several experiments were performed on an artificial stone called CPIR09 as well as travertine. Test results show that the test device is performing well. Also, with the help of this test device, it is possible to measure the volumetric modulus of stone components.
Architecture
M. Yahyaee; M. Moradi
Abstract
Considering the purpose of Regulation 2800, which is to ensure the safety of life at risk level 1, as well as the progress made in the design method based on the performance and development of new design regulations, in this study, asymmetric steel structures in one In order to have a coaxial brace that ...
Read More
Considering the purpose of Regulation 2800, which is to ensure the safety of life at risk level 1, as well as the progress made in the design method based on the performance and development of new design regulations, in this study, asymmetric steel structures in one In order to have a coaxial brace that is designed according to the 2800 standard of the third edition and the tenth issue of the national regulations, from the perspective of design, based on the performance and criteria of the Iran Improvement Instruction, Do or not. For this purpose, 12 steel buildings with coaxial brace system in groups of 5, 8, 11 and 14 floors are analyzed and studied by leaving the centers of difficulty compared to the center of mass 0, 10 and 20%, which is due to the displacement of braces in one direction. At the stage of performance appraisal, the results of static and dynamic nonlinear analysis of buildings, including relative displacement of floors, determination of structural performance point, paste deformations of compressive and tensile braces, and ratio of force to column capacity with acceptance, comparison and level criteria. The performance of buildings and their components has been determined. The results show that regular and irregular structures of 11 and 14 floors provide the level of life safety performance at risk level 1. This is almost true of 8-story structures, but in 5-story structures, especially in the symmetrical direction, weaknesses have been observed that need to be addressed to ensure the level of safety of the lifeguard.
Architecture
R. Pourhosseini; R Morshed; A.H. Khaje Hosseini
Abstract
Most existing regulations, unlike cutting, do not provide for reinforced concrete reinforcement for reinforced concrete members after cracking. In this paper, the torsional strength of reinforced concrete beams with longitudinal and non-silent reinforcement is modeled and examined during and after cracking. ...
Read More
Most existing regulations, unlike cutting, do not provide for reinforced concrete reinforcement for reinforced concrete members after cracking. In this paper, the torsional strength of reinforced concrete beams with longitudinal and non-silent reinforcement is modeled and examined during and after cracking. This modeling is based on ANSYS software, which is based on finite element theory. The results of the modeling have been compared with the laboratory results. These results are consistent with the results of experiments and show that there is a residual complexity of the residue in concrete beams reinforced with longitudinal reinforcement alone.
Architecture
H. Aghabozorg; F. Manteghi; M. Ghadermazi; F. Mohammad Panah; S. Sheshmani
Abstract
The aim of this paper is to provide a link between research projects and education to optimize teaching and learning of related subjects. In a research project, three compounds including an intermolecular proton transfer compound, a hydrated carboxylic acid, and a metallic complex were synthesized, all ...
Read More
The aim of this paper is to provide a link between research projects and education to optimize teaching and learning of related subjects. In a research project, three compounds including an intermolecular proton transfer compound, a hydrated carboxylic acid, and a metallic complex were synthesized, all of them have non-covalent interactions such as O−H∙∙∙O, O−H∙∙∙N and C−H∙∙∙O hydrogen bonds as well as van der Waals forces and π-π stacking resulting to different supramolecular structures. The structures of compounds are characterized by single crystal X-ray diffraction method. The classic concepts and definitions related to the subject are given in the last section.
Architecture
M. Mahmoudi Sahebi
Abstract
Performance design based on performance is a new method in which structural damage against different levels of risk (earthquake) is clearly assessed and structural and non-structural performance of structures by limiting strength, stiffness and ductility. Members are controlled. To achieve these goals, ...
Read More
Performance design based on performance is a new method in which structural damage against different levels of risk (earthquake) is clearly assessed and structural and non-structural performance of structures by limiting strength, stiffness and ductility. Members are controlled. To achieve these goals, a nonlinear analysis of the structural model is essential. To perform this analysis, the basic characteristics of the structure (initial strength and stiffness) are required. The closer the initial values are to the final values, the easier and faster the process of analyzing and designing the structure will be. The main purpose of this paper is to provide a method that can be used to easily and quickly obtain the initial strength and stiffness of the structure for nonlinear analysis. For this purpose, coefficients are proposed that can be used to make the required strength and stiffness of reinforced concrete bending frames for each of the functional modes; Intermediate use (IO), life safety (LS) and structural destruction limit (CP) were determined. These coefficients are the coefficient of behavior (Rw) and the coefficient of magnification of the displacement (Cd), which are used to calculate the strength and stiffness required by the structure, respectively. The recommended values for behavioral coefficients in different functional states of IO, LS, and CP are 2.28, 4.43, and 5.3, respectively. The values of 2.29, 4.73 and 5.83 have also been suggested for displacement magnification coefficients in different functional modes. Studies show that the use of the above coefficients in calculating the required strength (base shear) and initial stiffness (by controlling lateral displacement) of structures, will make the next steps of work and nonlinear analysis of structures easier and faster. .
Architecture
A.A. Ramezanianpour; V. Shahhosseini; F. Moodi
Abstract
As we can see in many bridges in the country, due to the lack of implementation of the bridge maintenance management system, the range of failures is gradually It has expanded and led to declining resistance and increasing the vulnerability of bridges. Due to the hot and humid weather conditions and ...
Read More
As we can see in many bridges in the country, due to the lack of implementation of the bridge maintenance management system, the range of failures is gradually It has expanded and led to declining resistance and increasing the vulnerability of bridges. Due to the hot and humid weather conditions and the presence of salts in it The Persian Gulf region has seen signs of failure, including numerous cracks and local damage, in many of the concrete slabs in the area's structures and bridges. It is possible. Therefore, the assessment of the condition of concrete slabs prevents the progress of failure, removal from service and repair of structures.In this paper, the Expert-Slab Bridge expert system is presented to assess the failure of concrete slabs. Expert system, computer program It is intelligence that uses the knowledge and methods of inference and inference to solve problems. This system includes an interpreter, an inference method Knowledge-based and database. Bridge deck failures due to environmental conditions and cracked concrete structures, failures Surface and instrumental failures have been evaluatedSeveral case studies and comparisons between technical inspection results and the expert system In order to gain reliability and accuracy, the results of the system have been done. System outcomes include a concrete bridge slab identification, inference Expert system with failures and their causes, status index, status description, suggested solution for repair and diagram of useful life of concrete slab Is .
Architecture
M. Mazloom
Abstract
This paper is the result of laboratory work performed on the initial and final setting times of high-strength concrete with different percentages of microsilica. The penetration resistance method (ASTM C 403) has been used to determine the setting times of concrete. In this method, first the concrete ...
Read More
This paper is the result of laboratory work performed on the initial and final setting times of high-strength concrete with different percentages of microsilica. The penetration resistance method (ASTM C 403) has been used to determine the setting times of concrete. In this method, first the concrete is made and then the coarse grades of the four large aggregates are separated using a sieve. It is important to know the timing of concreting in the planning of its executive operations. In fact, this feature of concrete is effective in determining the allowable time of transport, casting, vibration and surface polishing of concrete. The results of the initial setting time test are also used to find the starting point for spontaneous shrinkage of concrete, which accounts for the largest amount of shrinkage in highly resistant concretes. The results of this study show that with increasing microsilica percentage, the initial and final bonding times of concrete increase.
Architecture
A. Rahmani Firooz Jaee; M.H. Afshar
Abstract
In the present paper, using evolutionary strategy, optimization of problems with continuous variables is performed. Evolutionary strategy is one of the meta-exploration methods that is basically provided for problems with continuous variables and can adjust its parameters during the optimization process. ...
Read More
In the present paper, using evolutionary strategy, optimization of problems with continuous variables is performed. Evolutionary strategy is one of the meta-exploration methods that is basically provided for problems with continuous variables and can adjust its parameters during the optimization process. In order to evaluate, optimization of known functions is performed using evolutionary strategy and finally the results are presented and the effect of different parameters on the optimization process is presented by presenting tables and graphs. And the results obtained from the presented method are compared with the results obtained from other methods.
Architecture
F. Mozaffar; H.R. Azemati; M. Bagheri
Abstract
Today, urban parks are an integral part of biological complexes and public spaces, especially in metropolitan areas, and play an essential role in meeting the social and individual needs of citizens. These spaces occupy a large part of people's daily time and environment, including children, and therefore ...
Read More
Today, urban parks are an integral part of biological complexes and public spaces, especially in metropolitan areas, and play an essential role in meeting the social and individual needs of citizens. These spaces occupy a large part of people's daily time and environment, including children, and therefore the upgrading and enrichment of these spaces can be effective in personal growth, social interactions, strengthening the sense of cooperation and even educating citizens and children. Be. Due to the special characteristics of children's growth, health and safety, a part of the function of urban open spaces, including parks, is always allocated to children. Therefore, the preparation of urban open spaces, including parks, is of particular importance for children as citizens and future builders of the city. In this article, relying on the unique characteristics of children, as an important part of citizens, the necessity and importance of using the capacity of urban parks to grow their creativity is emphasized and in this regard, some of the principles and criteria of garden design Urban landscapes are presented in proportion to the rainfall and flourishing of children's creativity. Their participation in the design process of children's parks and play spaces is also suggested as one of the active and dynamic design strategies. In this regard, based on the research method of content analysis, some studies of children's creative development and the process of designing open spaces and urban parks have been studied and it is concluded that children's direct participation in creating their space, in addition to creating more desire to attend and interact. In the environment, the possibility of physical, mental, social development, talents and their creativity is also provided.
Architecture
H. Zomarshidi
Abstract
Wrong ways of implementing traditional buildings, especially rural ones, which are due to the lack of use of quality materials, lack of knowledge of the principles of execution andThe technical details are the cause of the most catastrophic accidents from the not-so-terrible earthquakes, but with a lot ...
Read More
Wrong ways of implementing traditional buildings, especially rural ones, which are due to the lack of use of quality materials, lack of knowledge of the principles of execution andThe technical details are the cause of the most catastrophic accidents from the not-so-terrible earthquakes, but with a lot of financial losses, especially casualties.Is.Teaching the technical performance of a traditional building is essential, as it will significantly increase the useful life of the building, as well asIt is resistant to earthquakes.In this article, with an approach to building and indigenous materials and teaching how to build these buildings in the country's villages and the methods of building brick buildings to itIt has been discussed that: Reinforcement of the ground under the foundation, basic foundations, seat making and bitumen execution with a special execution method inThey are resistant to earthquake movements and also from brick wall constructions, along with skeletal restraint byThe backrests are listed in the view. In the next article, which is a continuation of this research, cases such as: covering the horseshoe with detailed detailsTechnical and rigid connection. Vertical and horizontal windings will be mentioned simultaneously and the roof covering in the structure. Hopefully withThe guidelines and tutorials discussed in this discussion are traditional brick buildings (which are also the national capital of the country) within the framework.Build the mentioned foundations.
Architecture
Seyed M.R. Mortazavi
Abstract
Strain reversal in the inelastic range may cause a dramatic drop in the tangent modulus for mild steel struts. Other material properties also affect the tangent modulus. Consequently the influence of several of these properties is examined for an electric-resistance welded steel tube. The variables chosen ...
Read More
Strain reversal in the inelastic range may cause a dramatic drop in the tangent modulus for mild steel struts. Other material properties also affect the tangent modulus. Consequently the influence of several of these properties is examined for an electric-resistance welded steel tube. The variables chosen are: (1) Strain hardening caused by varying the amount of tensile prestrain; (2) strain aging; (3) and the Bauschinger effect, for a specific steel type. The results of 39 stub column tests on semi-killed steel specimens show that tensile prestrain reduces the tangent modulus compared with that found for the as-received tube, but strain aging is seen to be significant in reducing this loss in value. The variations obtained for the tangent modulus are illustrated. The variations are given as functions of the amount of tensile prestrain and whether the steel is fully aged or non-aged. The importance of knowledge of prior strain history of a material is highlighted.
Architecture
V. Tabataba Vakili; S. Shirvani Moghaddam
Abstract
In this paper, in order to modify and improve the handoff process, which contains initiation and execution phases, three new prioritization schemes have been investigated. These new schemes prioritize handoff requests considering both traffic and propagation conditions. According to suggested schemes, ...
Read More
In this paper, in order to modify and improve the handoff process, which contains initiation and execution phases, three new prioritization schemes have been investigated. These new schemes prioritize handoff requests considering both traffic and propagation conditions. According to suggested schemes, priority of different candidate base-stations is based on three measurements in a joint state. These measurements are received power at mobile unit, power variation rates, and the number of free traffic channels of adjacent base-stations. Simulation results show that considering similar conditions, i.e. equal number of handoffs, lower call dropping (outage) and smaller delay distance will be achieved by new prioritization schemes rather than previous works. It means access to lower forced termination probability and interference and hence better QoS (Quality of Service). Finally, due to the best trade offs between propagation and traffic criteria, simulation results introduce SPBPS3 as optimum scheme.
Architecture
M.H. Afshar; H. Arzani
Abstract
Analyzing the flow on dams by numerical methods compared to the physical model preparation is the most efficient way to reduce costs and time. In general the type of method used, flow analysis on overflows in its permanent condition requires solving the category of differential equations involved called ...
Read More
Analyzing the flow on dams by numerical methods compared to the physical model preparation is the most efficient way to reduce costs and time. In general the type of method used, flow analysis on overflows in its permanent condition requires solving the category of differential equations involved called Navirastox equations in order to make the free surface of the flow very complex and uneconomical.One type of equation used in overflows is the use of medium depth equation model, or in other words, shallow water equations that result from integrating the Navier-Stokes equations in depth and applying boundary conditions of surface and substrate. Intermediate depth equations, also known as shallow water equations, are mainly used to simulate currents where the velocity value is constant at depth of flow and the pressure distribution at depth is hydrostatic.Due to the complexity of the equations and the lack of a precise answer, different numerical methods have been developed to solve the equations governing the physical phenomena.One of the newest of these methods is the set of methods without a network, which has been introduced in the last two decades to solve differential equations, each of which has its own advantages and disadvantages.Dissociation of the problem in many non-networked methods leads to integral equations, the solution of which requires numerical integralization and the introduction of gaseous points and related weights along with networking.In this paper, the least squares method is used to solve shallow water equations.At least discrete squares have been used in the dissection phase of the differential equation to achieve algebraic equations, as well as the minimum weight squares of the data in order to obtain the values of the form functions.The most important advantage of this method should be considered in eliminating the steps of integrating the process of calculating the matrices of the coefficients and also supporting it without networking in the real sense.Correction of the method has been done by numerical analysis of the flow on the overflow of one of the dams of the country and its comparison with the results related to the speed and water level in the physical model.
Architecture
M. Mazloom
Abstract
In this paper, the effect of microsilica on the short-term mechanical properties of high-strength concrete is discussed. Nowadays, due to the fact that the use of microsilica in high-strength concrete has become very common, it is very important to know the effect of this material on different characteristics ...
Read More
In this paper, the effect of microsilica on the short-term mechanical properties of high-strength concrete is discussed. Nowadays, due to the fact that the use of microsilica in high-strength concrete has become very common, it is very important to know the effect of this material on different characteristics of concrete. The relationship between resistance, the sequential elastic modulus and the return elastic modulus is one of the cases discussed in this study.Another effect has been the length of the wet storage period on the long-term strength of these concretes. In the laboratory work performed in this study, the ratio of water to cement materials and the total amount of cement materials are 0.35 and 500 kg / m3, respectively. The percentage of microsilica substitutes for cement was 0, 6, 8, 10 and 15%. The 28-day strength of the concrete in question was between 58 and 70 megapascals. To study the effect of storage conditions on the long-term resistance of these types of concretes, the 400-day resistance of the samples kept in saturated conditions until the test was compared with the samples stored in these conditions for 7 days.The result is that long-term processing has little effect on the long-term strength of microsilica concrete. This is not true of microsilica-free concrete. Research on the relationship between resistance and modulus of elasticity and modulus of return elasticity also shows that the model proposed by the ACI 318 regulations does well in these high-strength concretes similar to this research predicts.
Architecture
S. Shirvani Moghadam; H. Noor Alizade; A.H. Khodadadi
Abstract
For cellular mobile users, forced disconnection of a conversation is more undesirable than blocking and rejecting initial communication requests. Various traffic prioritization schemes seek to reduce the forced disconnection of conversations that require channel replacement.In this paper, while reviewing ...
Read More
For cellular mobile users, forced disconnection of a conversation is more undesirable than blocking and rejecting initial communication requests. Various traffic prioritization schemes seek to reduce the forced disconnection of conversations that require channel replacement.In this paper, while reviewing and presenting conventional methods without prioritization, with FIFO and MBPS queuing, with a reserved channel and a combination with queuing and reserved channel, a mobile cellular telecommunication system is considered by considering two types of initial requests and in Now, the connection needs to be replaced, the simulation has been simulated and the results of simulating different methods have been extracted according to the conventional evaluation criteria "probability of forced disconnection" and "probability of blockages" and a comparison has been made between these methods. The results of simulations presented in this study show that the MBPS queuing method is better than the FIFO method and these two methods, while having the possibility of optimal traffic jams, have a much lower probability of forced disconnection than the non-prioritized method.The combined method works better than the reserved channel method because it has the advantages of the reserved channel method and does not have long queues. The results of this study will be useful in selecting the appropriate method and considering the key parameters of each method such as the length of the queue in the queuing methods and the number of channels reserved in the methods based on the reserved channel.
Architecture
A. Rastgoo; K. Azhdari; M. Ahmadi
Abstract
Determining the stress intensity coefficient is the main parameter in reservoir design, and what in the linear failure mechanism controls the crack behavior is the value of the stress intensity coefficient. There are different ways to estimate this value. The weight function method is widely used as ...
Read More
Determining the stress intensity coefficient is the main parameter in reservoir design, and what in the linear failure mechanism controls the crack behavior is the value of the stress intensity coefficient. There are different ways to estimate this value. The weight function method is widely used as one of the stress intensity estimation methods. In this paper, the weight function based on estimating the crack displacement function is obtained using modeling in software in a specific geometry of the ball tube. Then, using the weight function, the stress intensity coefficient and the fatigue life of the ball tube in the case of autophagy, using the actual behavior of the material, are obtained and compared with the available results. The method presented in this paper is a general method that can be applied to any geometry of the tank with any number of internal or external cracks and any relative length of cracks.
Architecture
A. A. Ramezanianpour; A. Haghollahi; A. Pourkhorshidi
Abstract
Abrasion of industrial concrete floors is a major problem resulting in their lower service lives. Attempt has been made to relate the abrasion resistance of concrete to its compressive strength. However there are other factors which influence the abrasion resistance of concrete. In this study, several ...
Read More
Abrasion of industrial concrete floors is a major problem resulting in their lower service lives. Attempt has been made to relate the abrasion resistance of concrete to its compressive strength. However there are other factors which influence the abrasion resistance of concrete. In this study, several concrete mixtures containing different types of cements, aggregates, admixtures and additives such as silica fume and styrene butadiene rubber (S.B.R) polymer were made to assess their abrasion resistances. All concrete specimens were tested for wear action in accordance with ASTM and EN standard test methods. Based on data obtained from the tests, an empirical model was proposed to evaluate the abrasion resistance of different concretes. Results of this investigation show that the incorporation of silica fume, S.B.R polymer and granite aggregates in concrete improve its abrasion resistance. The proposed mathematical model is capable to predict the abrasion resistance of concrete and provide a guide for selection of materials to produce more durable concrete when subjected to wear action.
Architecture
A.A. Ramezanianpour; V. Shahhosseini; A. Nilforoushan
Abstract
The purpose of this investigation was to study the effect of bonding behavior of concrete substrate and repair materials. Three different cementitious or modified-cementitious repair materials and three surface roughnesses were studied. Repair materials were ordinary mortar, modified cementitious mortar ...
Read More
The purpose of this investigation was to study the effect of bonding behavior of concrete substrate and repair materials. Three different cementitious or modified-cementitious repair materials and three surface roughnesses were studied. Repair materials were ordinary mortar, modified cementitious mortar by silica fume and modified cementitious mortar by styrene butadiene rubber latex. Surface preparations were smooth surface, rough surface and epoxy resin adhesive as a bonding agent. The method used for evaluation of bond strength was pull-off test. the influence of the electrical conductivity of repairing materials was analyzed by rapid chloride permeability test. Finally, the performance of the adhesives was evaluated considering both the bond strength and electrical conductivity. Results obtained from these tests indicated that the roughness of substrate surface has a main effect on the performance of bond between adhesives and concrete. There are not great differences in bonding strength between various repairing materials but considering electrical conductivity, modified cementitious mortars are better materials for using in corrosive environments to increase service life of repaired structures
