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IITG Workshop on Earthquake Resistance of Low-Cost Engineered Housing in North-East India Material Characterization for Masonry Structures Dr. Vaibhav Singhal Mr. Syed Humayun Basha Indian Institute of Technology Patna Indian Institute of Technology Guwahati Material Characterization for Masonry Proper material characterization required for load bearing and non-load bearing masonry Load Bearing Unreinforced and reinforced masonry Confined masonry Non-load Bearing Unreinforced and reinforced masonry Masonry Brick or Block unit Mortar 2 Types of Brick/Blocks Clay Bricks – Most Common – Two types of •Un-burnt •Burnt Fly ash Bricks Hollow Clay Bricks Concrete Blocks (Solid and Hollow) Autoclaved Aerated Concrete (AAC) Blocks Cellular Light weight Concrete (CLC) Blocks 3 Characterization of Brick Units Material Properties • Water Absorption (WA) • Initial Rate of Absorption (IRA) Mortar bond strength Important to assist in mortar selection and material handling • Compressive strength (f ) b • Tensile strength Flat Position On edge 4
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