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Current Materials Science

Editor-in-Chief

ISSN (Print): 2666-1454
ISSN (Online): 2666-1462

Research Article

Evaluation of Strength of Concrete on the Different Initial Exposure Con-ditions

Author(s): Sri Ram Krishna Mishra*, Pradeep Kumar Ghosh and Manoj Kulshreshtha

Volume 14, Issue 2, 2021

Published on: 24 December, 2020

Page: [102 - 109] Pages: 8

DOI: 10.2174/2666145413999201224112446

Price: $65

Abstract

Background: The previous studies have focused curing effect of mainly on high strength concrete, where strict supervision is maintained. This study is based upon general purpose concreting work for commercial and residential construction in absence of skilled manpower and supervision.

Objective: The objective of this study is to establish a thumb rule to provide 7 days initial curing for maintaining quality for unsupervised concreting irrelevant to type of cement and grading.

Methods: In this study concrete samples made with locally available commercial cements were cured for various initial exposure.

Results: The results shows that concrete cured after a gap of 4 days from the time of de-moulding have given lowest strength as compared to concrete cured in standard practices i.e. where proper curing protocol had been followed.

Conclusion: Initial curing is most important aspect of gaining desired strength. The findings after this study shows that curing affects the strength of concrete in variable grading. Initial curing has great importance for concrete with all types of Portland cement. Concrete with supplementary cementitious materials gives lowest strength initially but results higher strength after 28 days as compared to Portland cement.

Keywords: Exposure condition, elapsed curing, curing conditions, compressive strength, gradation curve, blended cement.

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