Strength Evaluation of DCCA Concrete with Self Curing Using Polyethylene Glycol-400

Authors

  • Ravi Kumar GARRE , V. Archana , N. Sheshanna , Mohammed sameer Ghouse

Abstract

Large quantities of construction and demolition wastes are generating continuously and their
dumping would become a big problem for many urban areas. And due to water scarcity, especially in urban
areas, as curing plays most important role in the durability and performance of concrete, it is needed to
develop self curing concrete. This research work is divided into two parts. One is usage of construction and
demolition wastes in conventional concrete as demolished crushed concrete aggregate (DCCA) and another
one is development of self curing concrete by using a self curing admixture poly ethylene glycol – 400
(PEG-400). In first case, the experimental investigation is done to assess the effect of partial replacement of
coarse aggregate by DCCA on workability, compressive strength and split tensile strength of concrete. In
second case, the experimental investigation is done to assess the effect of PEG-400, replaced 1.5% weight of
cement, on workability, compressive strength and split tensile strength of concrete.
For both the cases, M20 grade concrete with water/ cement ratio of 0.5 is carried out with three proportions
of coarse aggregate replacement by DCCA i.e., 10%, 20% and 30%. Compressive strengths and split tensile
strengths were evaluated for different curing periods like 7days, 14 days and 28 days. The concrete made
with 10% replacement of coarse aggregate with DCCA gave good strength

Published

2020-04-30

Issue

Section

Articles