• Ruturaj Girish Sonawane

The paper covers the aspect on how to choose a material for green concrete. It presents the feasibility of the usage of by product materials like fly ash, quarry dust, marble powder/ granules, plastic waste and recycled concrete and masonry as aggregates in concrete. The use of fly ash in concrete contributes the reduction of greenhouse emissions. It has been observed that 0.9 tons of CO2 is produced per ton of cement production. Also, the composition of cement is 10% by weight in a cubic yard of concrete. Thus, using green concrete it is possible to reduce the CO2 emission in atmosphere towards eco-friendly construction technique. To avoid the pollution and reuse the material, the present study is carried out. Furthermore, a concrete structure made of normal concrete can be permeable which expedites the steel reinforcement corrosion process when exposed to severe weather conditions. Therefore, this reduces its durability and service life. Implementing sustainable/green technologies in concrete design and production can solve these problems and extend the structure life span. In this study, the emission inventory data of CO2 in concrete production is investigated and used to determine the level of green concrete. Example calculation is provided together with an actual case study. Inventory data of each component is collected separately through local sources such as cement companies, aggregate plants, and from literature survey and combined together to be a total emission factor for concrete production. Examples of how to reduce the CO2 emission in concrete by changing mix proportions, or using supplementary materials are also demonstrated. In the case study on a townhome project, the amount of CO2 emission (from material) of each individual house and of the whole project is determined. Suggestions on the use of supplementary materials to replace cement and on the use of admixtures to change mix proportion in order to reduce CO2 emission is also provided. The concrete mixture was produced which tested and compared by conducting compressive test and Split tensile test for 7 days,14 days and 28 days. In M25 concrete mix 50% of cement was replaced by fly ash & sand was totally replaced by 50% of quarry dust and 50% of marble powder.

Green Concrete, Eco-friendly concrete

"Green Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.377-380, November-2018, Available :http://www.jetir.org/papers/JETIR1811A46.pdf

"Green Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp377-380, November-2018, Available at : http://www.jetir.org/papers/JETIR1811A46.pdf