Particle Size Distribution of Sandstone Aggregate Influence on Recycled Aggregate Concrete Properties

Abstract:

Typically, the selection of large aggregate particle size is mainly determined by the thickness of structures and the thickness of protective layer. The greater the aggregate diameter is, the smaller the specific surface is, and the smaller coating materials demand will be without specific requirements. It will affect the concrete flowability directly if there are too much big size of aggregates or the particle size is too big for forming a certain stable packing skeleton structure. The strength of the large diameter recycled self-compacting rock-fill concrete is low so that the primary cause of its failure mechanism is bond failure and bond slip in aggregate. Shear failure in aggregate is not easy to happen due to the strength of the aggregate is too low. For this reason, we put forward the general selection requirements for large diameter aggregate.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 1504-1508
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.1504
• Online since: July 2014
• Authors: Li Jun Zhou, Fang Ning Sun, Qing Hong Zhao
• Keywords: Particle Size, Recycled Rock-Fill Concrete, Sandstone Aggregate

References

[1] Mehta P. K . Structure, Properties and Materials of the concrete. tongji university press, (1991).

[2] An Xuehui, Jin Feng, Shi Jianjun. Experimental study on self-compacting rock-fill concrete[J]. concrete, 2005；(1) : 3-6.

[3] Mei Shilong, Jiang Zhengwu; Sun Zhenping. The effect on the properties of self-compacting concrete for aggregate [J]. Building technology , 2007：（1）53-55.

[4] Jin Feng, An Xuehui, Shi Jianjun. Rock-fill concrete and rock-fill concrete dam. Journal of water conservancy 2005, 26（11）1347-1352.