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High Volume Replacement of Cement in Mortar: A Green Mortar

Author(s):

Manoj Katiyar , RCR ROORKEE UK; Ashok Kumar Sahu, BSACET MATHURA UP; Surendra Pal Singh, RCE ROORKEE UK; Sanjay Agarwal, GLA UNIVERSITY MATHURA UP

Keywords:

Comparative performance, Compressive strength, Ordinary Portland cement, Ultra-fine Fly ash

Abstract

Durability and performance of concrete structures is governed significantly by constituents of concrete mix used. Hence, use of alternative materials in place of cement in concrete to is enormously increased. Use of waste materials as supplementary cementitious materials (SCM) is now a global trend undergoing rapidly. Utilization of waste materials such as blast furnace slag, fly ash, medical waste ash and silica fume, waste glass powder etc. in the construction field, has gained importance because of the shortage of natural resources and various environmental problems caused by storing wastes. Use of super-fine or ultra-fine fly ash in mortar and concrete is recent trend. Recently IS allows up to 30% replacement of cement. This study investigates the use of ultra-fine fly ash for high volume (30-50%) replacement of cement to assess the compressive strength of 1:3 mortar. Result showed that significant reduction in Ordinary Portland cement can be achieved using ultra-fine fly ash for cement replacement in mortar with higher and same level performance. Maximum increase in compressive strength at the age of 28 days was found 40 %. After that there is decrease in compressive strength but it is equal to the compressive strength of mortar with 0 % UFFA replacement.

Other Details

Paper ID: IJSRDV7I100043
Published in: Volume : 7, Issue : 10
Publication Date: 01/01/2020
Page(s): 272-274

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