Method for preparing supplementary cementitious material, involves crushing waste concrete in crusher followed by grounding in ball mill and sieving grounded concrete, placing grounded concrete in carbonation chamber, and plunging carbon dioxide gas
	DESAI P; PATHAK S; RAJENDRAN A
	2023-07-13
专利权人	NUVOCO VISTAS CORP LTD (NUVO-Non-standard)
申请日期	2023-07-13
专利号	IN202321002832-A
成果简介	NOVELTY - The method involves crushing waste concrete in a crusher to a predetermined size followed by grounding in a ball mill and sieving the grounded concrete. The grounded concrete is placed in a carbonation chamber at a predetermined relative humidity and predetermined temperature. Carbon dioxide gas is plunged at a preset dosing concentration into the chamber comprising the concrete along with agitation for a preset time duration to achieve a supplementary cementitious material. The sieving of the concrete in the mill is such that retention on 90-micron sieve is less than or equal to 10 percentage. USE - Method for preparing supplementary cementitious material, which is useful in a concrete mixture for non-utility buildings and structures. ADVANTAGE - The method enables providing improved strength activity index, alternate SCM with nationwide availability, reduced carbon footprint in concrete making by greater than 25% and addresses the geographical scarcity of SCMs and waste management of concrete debris. The concrete produced shows no effect of loss in workability and no loss in strength as well. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron micrograph/microscopic photograph of a method for preparing supplementary cementitious material.
IPC 分类号	C04B-111/00 ; C04B-020/02 ; C04B-028/04 ; C04B-007/13 ; H04J-014/02
国家	印度
专业领域	材料科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/21313
专题	中国科学院新疆生态与地理研究所
作者单位	NUVOCO VISTAS CORP LTD (NUVO-Non-standard)
推荐引用方式 GB/T 7714	DESAI P,PATHAK S,RAJENDRAN A. Method for preparing supplementary cementitious material, involves crushing waste concrete in crusher followed by grounding in ball mill and sieving grounded concrete, placing grounded concrete in carbonation chamber, and plunging carbon dioxide gas. IN202321002832-A[P]. 2023.

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