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Effect of Water Reducing Agent to Improve the Workability and Strength of Concrete

Author(s):

Prashant Kumar Sahu , student; P L Tamrakar, BIT DURG

Keywords:

Reducing Agent, Chemical Admixtures, Compressive Strength

Abstract

Effect of water reducing agent to improve workability and strength of concrete. Water reducing agent can be used in concrete mix for two different purposes or a combination. First one is reduce the water in water-cement ratio (w/c) and therefore to increase strength and improve durability And another is to reduce both water and cement, at given workability and strength, in order to save cement and reduce creep shrinkage, and thermal strains. The order to achive this thing water reducing agents are used that are myk wp-10 lignosulphonated based and Sulphonated naphthalene formaldehyde. This experimental work was conducted to study the effect of water reducing agent on properties of concrete with characteristic strength of 25 N/mm2. The properties investigated were workability (Slump loss with time), and compressive strength. On the basis of observation on test result it can be stated that properties of concrete in fresh and hardened stages have been improved with the addition of three types of different ingredients based water reducing agent for all nominal mixes of concrete, the Sika 541 K2 have shown however more pronounced in terms of increase in the compressive strength, workability, water reduction, cement saving requirements of concretes. Slump loss can be reduced by using the chemical admixtures. However, effectiveness is higher for water reducing agent concrete. From the results of the study the workability of concrete can be increased by addition of water reducing agent. However, very high dosages of water reducing agent tend to impair the cohesiveness of concrete. Compressive strength is improved by using different ingredients based water reducing agent compared with conventional concrete; On the other hand, even its ultimate strength is lightly lesser than the desired characteristic strength. This paper summarizes some of the major aspects of effect of water reducing agent to improve workability and strength of concrete.

Other Details

Paper ID: IJSRDV3I70070
Published in: Volume : 3, Issue : 7
Publication Date: 01/10/2015
Page(s): 100-106

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