Self-compacting concrete produced with limestone waste

FIB Conference: Sustainable Concrete: Materials and Structures

Kopecskó, K.^1

Budapest University of Technology and Economics, Hungary^1

关键词: Chloride ions;    Crushed limestone;    Fresh properties;    Further treatments;    Hardened properties;    Lime-stone quarry;    Limestone powder;    Quartz aggregates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/442/1/012006/pdf
DOI  :  10.1088/1757-899X/442/1/012006

来源: IOP

【 摘 要 】

The aim of the research was to design powder type self-compacting concrete containing high amount of limestone quarry waste as aggregate and fines. The light colour aggregate mixed with white cement resulted in esthetical surfaces of exposed concrete for architectural purposes. Large amount waste originated from the limestone mining process requires deposition with further treatment. In our study we tried to replace also the limestone powder fines by the slurry produced during the cut of limestone blocks. Seven recipes were examined during the research: three mixtures of quartz aggregate with different particle size distributions were used as reference mixtures, three mixtures composed of crushed limestone aggregate and one with mixed quartz-limestone composition, respectively. In the recipe of mixed limestone-quartz aggregate dried quarry waste slurry was successfully applied instead of direct ground limestone powder. In the research different test methods were used to determine the fresh properties as well as the hardened properties of concretes.