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Materials 2015, 8(5), 2658-2672; doi:10.3390/ma8052658

The Effects of Different Fine Recycled Concrete Aggregates on the Properties of Mortar

1
Institute of Materials Engineering, National Taiwan Ocean University, No. 2 Pei-Ning Road, Keelung 20224, Taiwan
2
Department of Harbor and River Engineering, National Taiwan Ocean University, No. 2 Pei-Ning Road, Keelung 20224, Taiwan
3
Graduate Institute of Architecture and Sustainable Planning, National Ilan University, No.1, Sec. 1, Shen-Lung Road, I-Lan 26047, Taiwan
4
Department of Civil Engineering, National Ilan University, No.1, Sec. 1, Shen-Lung Road, I-Lan 26047, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Maryam Tabrizian
Received: 10 March 2015 / Revised: 29 April 2015 / Accepted: 8 May 2015 / Published: 18 May 2015
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Abstract

The practical use of recycled concrete aggregate produced by crushing concrete waste reduces the consumption of natural aggregate and the amount of concrete waste that ends up in landfills. This study investigated two methods used in the production of fine recycled concrete aggregate: (1) a method that produces fine as well as coarse aggregate, and (2) a method that produces only fine aggregate. Mortar specimens were tested using a variety of mix proportions to determine how the characteristics of fine recycled concrete aggregate affect the physical and mechanical properties of the resulting mortars. Our results demonstrate the superiority of mortar produced using aggregate produced using the second of the two methods. Nonetheless, far more energy is required to render concrete into fine aggregate than is required to produce coarse as well as fine aggregate simultaneously. Thus, the performance benefits of using only fine recycled concrete aggregate must be balanced against the increased impact on the environment. View Full-Text
Keywords: fine recycled concrete aggregate; recycled concrete aggregate; recycled aggregate; compressive strength; ultrasonic pulse velocity; mortar fine recycled concrete aggregate; recycled concrete aggregate; recycled aggregate; compressive strength; ultrasonic pulse velocity; mortar
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fan, C.-C.; Huang, R.; Hwang, H.; Chao, S.-J. The Effects of Different Fine Recycled Concrete Aggregates on the Properties of Mortar. Materials 2015, 8, 2658-2672.

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