Replacement Of Cement By Ggbs In Concrete

The normal ratios of aggregates and water to cementitious material in the mix remain unchanged.

Replacement of cement by ggbs in concrete.

The reduction in early strength will be more noticeable at high ggbs levels and low temperatures. Ggbs is used as a direct replacement for portland cement on a one to one basis by weight. On the other hand it also contributes to environmental protection because it minimizes the use of cement during the production of concrete. Similarly low cement content concrete kerb backing etc the reduction will be magnified.

The effect of ggbs and fly ash as partial cement replacement was examined on concrete cubes cylinder and beams. How ggbs cement is used. Ggbs cement can be added to concrete in the concrete manufacturer s batching plant along with portland cement aggregates and water. An experimental investigation on properties of concrete by partial replacement of cement with ggbs and fine aggregate with quarry dust dr.

Typically the 7 day strength of a ggbs concrete will be 55 65 of the 28 day strength compared to 70 80 for a similar cem i portland cement concrete. In this research paper we have kept percentage of fly ash for every trial constant except for conventional trial and ggbs was used to replace cement partially from 40 up to 70 while keeping fly ash 25 as constant throughout. From structural point of view ggbs replacement enhances lower heat of hydration higher durability and higher resistance to sulphate and chloride attack when compared with normal ordinary concrete. With the addition of 40 of ggbs as a replacement of cement for an m25 grade of concrete there is an increase in the strength compared to the normal concrete.

Chapter 5 of the book is dedicated to the sustainability of cement concrete and cement replacement materials in. Each human being consumes one tonne of concrete per year which makes it the substance with the second highest consumption only water is higher concrete centre 2003.