High Impact Factor : 4.396 icon | Submit Manuscript Online icon |

To Study the Behaviour of Concrete With and Without Fly Ash When Subjected To Sulphate Attack

Author(s):

RANJEETA M , GNDEC BIDAR; MALLIKARJUN BUTTI, GNDEC BIDAR; DILIPKUMAR, GNDEC BIDAR; SANGAN GOUDA, GNDEC BIDAR; OMKAR, GNDEC BIDAR

Keywords:

Concrete, Fly Ash, Durability

Abstract

Concrete occupies unique position among the modern construction materials, Concrete is a material used in building construction, consisting of a hard, chemically inert particulate substance, known as an aggregate (usually made for different types of sand and gravel), that is bond by cement and water. Pozzolonas are Supplementary cementitious materials (SCMs) used to partially replace cement in concrete. They are often added to mortar to make the mixtures more economical, reduce permeability, increase strength and increase durability. The use of supplementary cementitious materials in concrete is advantageous in many ways. Their use improves and increases rheological properties, the strength of concrete and the resistance to sulphate attack. Supplementary cementitious materials are also advantageous in reducing the permeability to water and other fluids, the corrosion rate of embedded steel, the risk of delayed ettringite formation, and deleterious expansion due to the alkali-silica reaction. Durability of concrete is its ability to resist weathering action, chemical attack, abrasion and all other deterioration processes. Weathering includes environmental effects such as exposure to cycles of wetting and drying, heating and cooling, as also freezing and thawing. Chemical deterioration process includes acid attack, expansive chemical attack due to moisture and chloride ingress. The primary objective of present study is to investigate the strength properties (compressive and split tensile strength) and sulphate resistance with different percentage of fly ash. The specimen after 28 days of water curing are immersed in 10% of sodium sulphate solution for 30 days and are evaluated for loss in strength and weight for different percentage of fly ash.

Other Details

Paper ID: IJSRDV4I50383
Published in: Volume : 4, Issue : 5
Publication Date: 01/08/2016
Page(s): 659-663

Article Preview

Download Article