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The physical properties of mortars, the bond strength of the mortars to masonry units, and the structural strength of concrete masonry and composite masonry walls containing the mortars are discussed and compared. All of the mortars were tempered to as wet a consistency as could be conveniently handled by the mason. The compressive strength of the walls increased, in general, with the compressive strength of the mortar. The racking and flexural strengths of the walls increased with the bond strength of the mortar. The strength of bond test specimens tended to increase with the compressive strength of the wet consistency mortars that were used. However, bond strength appeared to be the dominant factor affecting the racking and flexural strength of the walls. Increase in both bond strength and wall strength with compressive strength of the mortar was not proportional to the relative compressive strengths of the type N and type S mortars. The stiffness of walls subjected to compressive and flexural loads increased with the bond and compressive strength of the mortars. However, the stiffness of walls subjected to flexural loads appeared to be more dependent upon the number of bed joints in the tensile face and on their extension in bond than upon the bending strains in the masonry materials.
Widely used in the construction of bridges, dams and pavements, concrete and masonry are two of the world's most utilized construction materials. However, many engineers lack a proper understanding of the methods for predicting and mitigating their movements within a structure. Concrete and Masonry Movements provides practical methods for predicting and preventing movement in concrete and masonry, saving time and money in retrofitting and repair cost. With this book in hand, engineers will discover new prediction models for masonry such as: irreversible moisture expansion of clay bricks, elasticity, creep and shrinkage. In addition, the book provides up-to-date information on the codes of practice. - Provides mathematical modelling tools for predicting movement in masonry - Up-to-date knowledge of codes of practice methods - Clearly explains the factors influencing all types of concrete and masonry movement - Fully worked out examples and set problems are included at the end of each chapter
The Reinforced Masonry Engineering Handbook provides the coefficients, tables, charts, and design data required for the design of reinforced masonry structures. This edition improves and expands upon previous editions, complying with the current Uniform Building Code and paralleling the growth of reinforced masonry engineering. Discussions include: materials strength of masonry assemblies loads lateral forces reinforcing steel movement joints waterproofing masonry structures and products formulas for reinforced masonry design retaining walls and more This comprehensive, useful book serves as an exceptional resource for designers, contractors, builders, and civil engineers involved in reinforced masonry - eliminating repetitious and routine calculations as well as reducing the time for masonry design.
Ninety walls of 10 different types of masonry construction were tested under various combinations of vertical and transverse load. It is shown that the effect of vertical load and wall slenderness on transverse strength can be predicted by rational analysis. The analysis is based on established theory which has been extended to account for the properties of masonry. Similar methods of rational analysis have been adopted for the design of steel structures and are presently being considered for reinforced concrete structures.