An investigation on effect of partial replacement of cement by waste marble slurry

Recyclability of waste marble in concrete production

Gainful utilization of waste marble powder in various construction practices has become a topic of interest in research areas. An overview of works reported regarding the use as partial replacement of sand and cement by marble powder in concrete is presented in the paper. Gaps in the studies to date have been pointed out. An environmental impact comparison of normal concrete with the use of marble powder as partial replacement of cement and sand is carried out using the UMBERTO NXT life cycle analysis software with ReCipe midpoint and endpoint methods. Finally, a detailed cost analysis study has been performed to justify the use of marble powder in concrete which has exhibited encouraging results in terms of strength and quality. It has also been found that the use of marble slurry in concrete reduces its environmental impact and is economically beneficial.

A study on environmental and economic impacts of using waste marble powder in concrete

The process of cement manufacturing contributes to greenhouse gas emission which is responsible for producing global warming. The use of industrial by-products like coal ash, waste plastics, rubber tire scrap, waste glass, foundry sand, marble powder and so forth in place of cement, sand can lead to sustainable development. Out of different wastes studied yet waste marble powder is a substance that has not been investigated for sand and cement amalgam in concrete. Disposal of marble waste from construction industry exhibits a substantial economic wastage and environmental burden. The aim of the study is to investigate the feasibility of waste marble powder as partial replacement of sand and cement amalgam. The seven variant concrete mixtures were made by partially replacing marble powder (up to 15%) in place of sand; cement and amalgam were evaluated for the mechanical strength, ultrasonic velocity (UPV), carbonation and microstructure analysis. Marble powder exhibited no function in hydration process; moreover, it acts as a filler. Optimal replacement was noticed with 10% sand and 10% cement amalgam by 20% marble powder.

Feasibility of waste marble powder in concrete as partial substitution of cement and sand amalgam for sustainable growth

Recycling of marble waste: A review based on strength of concrete containing marble waste

In this project we have made fly ash cement bricks with variations in its percentage of composition. The project describes the use of local fly ash in construction industry in a way to minimize the industrial waste. The aim of this project is to find that percentage of composition by weight of fly ash cement brick which will provide it better strength without much increase in the percentage of cement. We have made five types of fly ash cement bricks. In three types sand percentage is taken as 30%, while percentages of fly ash and cement have being changed by 5%. And in others percentage of fly ash is taken 60% with sand and cement having variation in their percentage by weight of the brick. The fly ash used is taken from the NTPC, sipat (C.G.). Using fly ash gives technical and economical advantage. As Fly ash is pozzolanic in nature, it increases the strength of the brick and it is a waste material of thermal power plant so using it in making the brick reduces the cost of the brick. Sand used has larger size particles compare to fly ash, it reduce the shrinkage of brick, providing volume stability. Cement is used as the binding material to bind the sand and fly ash together. In the compressive strength test performed, the strength of TYPE3 (55% fly ash, 30% sand and 15% cement) brick was 4.405 N/mm 2 , which was the highest, followed by TYPE5 (60% fly ash, 25% sand and 15% cement) brick with strength 3.926 N/mm 2 . In this project all the types of brick have got percentage water absorption less than 15%, which is acceptable as per IS:3495.

Chandraprabha Sahu

Papers

Partial Replacement of Cement with Marble Dust Powder