Study on compressive strength of self compacting mortar cubes under normal & electric oven curing methods

International Conference on Civil Engineering and Infrastructural Issues in Emerging Economies 2017

土木建筑工程;经济学

Venkatesh, G. J. Prasanna^1 ; Vivek, S.S.^1 ; Dhinakaran, G.^1

School of Civil Engineering, SASTRA University, Thanjavur

613401, India^1

关键词: Basic building block;    Civil engineering applications;    Ground granulated blast furnace slag;    Metakaolins;    Monolithic structures;    Oven curing;    Self-compacting mortars;    Structural rehabilitation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/80/1/012002/pdf
DOI  :  10.1088/1755-1315/80/1/012002

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

In the majority of civil engineering applications, the basic building blocks were the masonry units. Those masonry units were developed as a monolithic structure by plastering process with the help of binding agents namely mud, lime, cement and their combinations. In recent advancements, the mortar study plays an important role in crack repairs, structural rehabilitation, retrofitting, pointing and plastering operations. The rheology of mortar includes flowable, passing and filling properties which were analogous with the behaviour of self compacting concrete. In self compacting (SC) mortar cubes, the cement was replaced by mineral admixtures namely silica fume (SF) from 5% to 20% (with an increment of 5%), metakaolin (MK) from 10% to 30% (with an increment of 10%) and ground granulated blast furnace slag (GGBS) from 25% to 75% (with an increment of 25%). The ratio between cement and fine aggregate was kept constant as 1: 2 for all normal and self compacting mortar mixes. The accelerated curing namely electric oven curing with the differential temperature of 128°C for the period of 4 hours was adopted. It was found that the compressive strength obtained from the normal and electric oven method of curing was higher for self compacting mortar cubes than normal mortar cube. The cement replacement by 15% SF, 20% MK and 25%GGBS obtained higher strength under both curing conditions.