Partial replacement of cement by waste glass for concrete production.

Zemenu, Ngus

dc.contributor.author	Zemenu, Ngus
dc.date.accessioned	2021-03-04T12:30:26Z
dc.date.available	2021-03-04T12:30:26Z
dc.date.issued	2021-03-04
dc.identifier.uri	http://ir.bdu.edu.et/handle/123456789/12035
dc.description.abstract	Reusing of waste glass in concrete production is among the attractive option of achieving waste reduction and preserving the natural resources from further depletion thereby protecting the environment and achieving sustainability and producing concrete. This study systematically investigated the possible reuse of waste glass powder as partial substitute for cement in concrete. The concrete were prepared using a mix proportion of 1:2:4 (cement: fine aggregate: coarse aggregate) at water-cement ratio of 0.5 targeting a design strength of 25 MPa. We measured compressive strength, split tensile strength and flexural strength of concrete samples, that cement partially replaced by waste glass with the ratio of 5%, 10% and 15% by mass.The test result shows that the replacement of glass powder improves the mechanical properties of concrete as compared to normal concrete, with the peak value at 10% replacement of cement with glass powder. The maximum Compressive strength value appears on 10% of cement replacement with glass powder by mass. As curing age increase the Compressive strength of concrete also increase and the hydrations of cement is faster than glass powder. Split tensile strength of concrete Increased as curing time increased, and shows pick value at 10% glass powder replacement, and above 10% replacement the split tensile strength is decreased because of loses of first hydration energy of cement. The evolution of flexural strength of the original design mix and 10% of glasses that work as a partial replacement of cement with curing age, The results pointed out that the strength of concrete increases proportionally with curing process because the hydration process still continuous until getting the full strength of concrete. The flexural strength of 10% glass replacement as cement is greater than conventional concrete. The replacement of glass powder is economically cheap as well as a superior concrete can be made and it reduces emissions of CO2 to produce cement. Keywords: waste glass powder, pozzolanic reaction, cement, concrete.	en_US
dc.language.iso	en	en_US
dc.subject	MATERIALS SCIENCE	en_US
dc.title	Partial replacement of cement by waste glass for concrete production.	en_US
dc.type	Thesis	en_US