Feasibility of using ECC for improving the bond strength between bricks

Abstract

Masonry walls brittle and presents low mechanical strength And the main disadvantage of the mortar used in the masonry wall is that the compressive strength is low and it is a brittle material In the past research if the bond and mechanical properties of the mortar can be strengthened The seismic performance of the brick wall can be effectively improved On the other hand ECC (Engineered cementitious composite) is a class of HPFRCC (High-performance fiber-reinforced cementitious composites) that exhibits high ductility a strain hardening response in direct tension and multiple cracking In order to improve the performance of masonry walls this study aims of the feasibility of using ECC for improving the bond strength between bricks And improve the fluidity of ECC which has a high percentage of fly ash or slag The mechanical properties of the three mixtures design were studied which has different aggregates of silica sand and river sand and different PVA fiber volume fraction from 0 to 1 5 % And used it to do prism for investigating the mechanical properties The compressive and tensile strength of specimens which used three types of ECC are better than the specimens that used traditional cement mortar And the compressive and ductility of specimens which used silica sand are better than river sand The shear bond strength flexural bond strength and compressive strength of prism specimens which used three types of ECC are better than the specimens that used traditional cement mortar And the fiber in ECC contributes to increase bond strength and compressive strength

Date of Award	2019
Original language	English
Supervisor	Chung-Chan Hung (Supervisor)