الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
This study discusses the performance of cellular lightweight concrete bricks, which have recently been used as an alternative to red clay bricks in Egypt. The primary objectives of this study were to experimentally examine the mechanical properties and behaviour of CLC brick units and masonry panels and compare them with the RCL bricks. In addition, studying the behaviour of infilled frames with CLC bricks under cyclic loading was also investigated. Finally, construct numerical models to predict the behaviour of the CLC masonry panels. These objectives were defined after conducting a thorough review of the literature as discussed in Chapter 2. To address the aforesaid objectives, a series of experimental tests were conducted according to ASTM and British standards on specimens of brick units and brick masonry panels, such as compressive strength, flexure strength and tensile strength, diagonal tension and triplet tests to capture the in-plane behaviour of RCL and CLC masonry in compression and tension. The results of tests were used to determine the mechanical properties of brick units and masonry panels, such as compressive strength, tensile strength, flexure strength, stress-strain curves, modulus of elasticity, Poisson’s ratio and bond strength between brick and mortar. Furthermore, a comparison between RCL and CLC masonry panels’ behaviours was investigated to determine which is better for resisting different loads on the structure. The experimental plan, details of raw materials used, preparation of test specimens, equipment used, procedures 222 of experimental study and the failure patterns of specimens are explained in Chapter 3. The findings obtained from the masonry panels testing program were extended to the testing of two 1/2-scale, single-story, single-bay masonry infilled non-ductile reinforced concrete frames filled with CLC masonry. In addition, the experimental study on infilled frames included another two specimens of non-ductile infilled reinforced concrete frames filled with a combination of CLC and RCL bricks. The performance of the four specimens of infilled frames was evaluated under reversed cyclic lateral loading. The damage mechanism assessment of all specimens was done using the digital image correlation (DIC) technique. The four specimens’ behaviours were compared with each other’s and also compared with specimens of bare and RCL infilled frames available in the literature. Chapter 4 discussed the failure process, hysteretic response, ultimate load, initial stiffness, ductility index, and energy dissipation capacity of the previous specimens. Finally, complementing the experimental research, existing analytical models using a limit analysis method to predict the cyclic behaviour, lateral strength and failure mode of masonry infilled reinforced concrete frames with CLC masonry were constructed. The FEM model of the RC infilled frame with CLC bricks using the ABAQUS/Standard package was constructed using a 2D plane stress element. In addition, numerical modelling for CLC and RCL masonry panels using the simplified micro-modelling approach was constructed to predict their behaviour, strength and patterns of failure. Chapter 5 shows the adequacy of these models to calibrate and validate the experimental tests conducted in Chapters 3 and 4.