STUDY OF GLASS POWDER AS PARTIAL REPLACEMENT OF CEMENT

Abstract

Concrete is a construction material composed of cement, aggregates (fine and coarse aggregates) water
and admixtures. Today many researches are ongoing into the use of Portland cement replacements, using many waste
materials like pulverized fly ash (PFA) and ground granulated blast furnace slag (GGBS). Like PFA and GGBS a
waste glass powder (GLP) is also used as a binder with partial replacement of cement which take some part of
reaction at the time of hydration, also it is act as a filler material. In this study, waste glass powders have been used as
replacements to the concrete ingredient i.e. cement and the mechanical properties like compressive strength are
measured. Also we were studied the size effect of glass powder on strength of concrete. For checking strength effect of
replacement of cement by glass powder, the cement is replaced at 10%, 20% and 30%. For study of size effect of glass
powder the powder is divided in to two grades one is glass powder having size less than 90 micron and another is glass
powder having particle size ranges from 90 micron to 150 micron. It is found from study, Initial strength gain is very
less due to addition of GLP on 7th day but it increases on the 28th day. It is found that 20% addition of GLP gives
higher strength. And also GLP size less than 90 micron is very effective in enhancement of strength.