EFFECT OF FLY ASH ON THE GROUT

Abstract

The presented study discusses about fly ash and its benefit. The fly ash  cement as an advantageous material and also discuss about use of grouting in various field and method of grouting and also discuss about application of grouting. Fly ash is not only being used in construction but also in, ceramics, metallurgy, agriculture and environmental-related areas. Common areas of use are cement, concrete, ready-mixed concrete, cement or lime-based fly ash bricks and blocks for walling prefabricated building elements, land reclamation, soil stabilization, road constructions, embankments, landfills etc. Grout injection is used for sealing or strengthening the ground in order to prevent water entrance or any failure after excavation. There are many methods of grouting. Permeation grouting is one of the most common types in which the grout material is injected to the pore spaces of the ground. In grouting operations, the grout quality is important to achieve the best results. There are four main characteristics for a grout mixture including bleeding, setting time, strength, and viscosity.  Compressive strength obtain by using different percentage of fly ash .For 34% was 20.44 N/mm2 ,30% was 12.02N/mm2 and 25%  was 10.95 N/mm2. Compressive strength is calculate in experiment.From our result  we conclude that percentage of fly ash increasing in material and hence compressive strength is increasing of that material.