• UTKARSH PRADEEP KULKARNI
• PROF. VAIBHAV SHELAR

The continuous global demand for infrastructure due to persistent increase in population growth implies that more aggregate and cement would be required in concrete production. This would eventually lead to more extraction and depletion of natural resources and increased carbon emission. The continuous global demand for concrete comprises that more aggregate and cement requirement. This leads to more extraction, depletion of deposits of natural gravel, and increased CO2 emission from quarrying activities. Partial substitution of natural aggregate with recycled aggregate would lead to reduction in construction cost and carbon emission of the construction industry. Concrete is a heterogeneous material comprising fine aggregate, coarse aggregate, potable water and the binder known as cement. The presence of coarse aggregates contributes more to the heterogeneity. An aggregate consumes about 60% to 75% of the overall volume of concrete. The aim of this research work was to develop high performance concrete using recycled coarse aggregate, microsilica, and synthetic macro fibre with the object to boost higher use of recycled coarse aggregate in the construction industry. Concrete is most important material used in the construction industry. Large amount of natural aggregates were used in concrete, this causes the nature. Now a day’s many structures are demolished & rebuilt, demolishing of structures causes problem with dumping of waste material. An important aspect of sustainable construction is recycling or reuse of the construction material and demolition waste. It will maintain a friendly green environment. Recycled aggregates has micro cracks on its surface causes low strength, low workability of concrete. This draw back can be avoided by using micro silica. In this paper experimental results were shown for recycled aggregate incorporating with micro silica.

Micro silica; Recycled aggregate; Natural aggregate; Construction and demolition waste; Recycled concrete.

"STANDARD RECYCLED AGGREGATE CONCRETE INCORPORATE WITH MICRO SILICA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 1, page no.a665-a673, January-2023, Available :http://www.jetir.org/papers/JETIR2301085.pdf

"STANDARD RECYCLED AGGREGATE CONCRETE INCORPORATE WITH MICRO SILICA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 1, page no. ppa665-a673, January-2023, Available at : http://www.jetir.org/papers/JETIR2301085.pdf