# The Effects of Para Rubber Latex on Compressive Strength, Elastic Modulus, and Water Permeability of High Strength Concrete

## doi: 10.14456/mijet.2022.4

## Keywords:

High strength concrete, Para rubber latex, Compressive strength, Elastic modulus, Water permeability## Abstract

The objectives of this research were to study of compressive strength, elastic modulus and water permeability of high strength concrete containing low ammonia concentrated latex. The designed strength of concrete samples was 45 MPa. Some amounts of water in concrete mixtures were replaced by the concentrated latex at the percentage of 0.5, 1.0, 1.5, and 2.0 by weight. Each mixture was tested for slump, compressive strength, elasticity modulus, and water permeability. The compressive strength and elasticity modulus were observed by using concrete samples, having 10 cm in diameter and 20 cm in height at the ages of 3, 7, 14, and, 28 days of curing. The required slump was between 7.5 cm and 12.5 cm. The result showed that the increasing of concentrated latex decreased slump of the fresh concrete. The 28-day compressive strengths of the latex concretes containing 0.5, 1.0, and 1.5% of latex replacement showed a little higher than the control concrete’s while the 2.0% replacement was dramatically lower. The elastic modulus varied directly to compressive strength of all mixtures. At the same time, almost all mixtures of latex concrete obviously provided lower water permeability than the control one, especially the 1.5% replacement which was about 3 times lower. Thusly, a proper amount of the concentrate latex could be used well in high strength concrete work for increasing its impervious aspect.

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