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Materials 2016, 9(2), 84; doi:10.3390/ma9020084

Effects on the Physical and Mechanical Properties of Porous Concrete for Plant Growth of Blast Furnace Slag, Natural Jute Fiber, and Styrene Butadiene Latex Using a Dry Mixing Manufacturing Process

1
Research institute of technology, Nature and Environment Co. Ltd., 116-28 Boheung 1-Gil, Kongju 325-33, Korea
2
Department of Environmental Engineering, Andong National University, 1375 Gyeongdong Street, Andong 760-749, Korea
3
Department of Rural Construction Engineering, Koungju National University, 54 Daehak Street, Yesan 340-702, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Prabir K. Sarker
Received: 10 October 2015 / Revised: 4 January 2016 / Accepted: 21 January 2016 / Published: 29 January 2016
(This article belongs to the Special Issue Utilisation of By-Product Materials in Concrete)
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Abstract

To evaluate the effects of industrial by-products materials on the performance of porous concrete for plant growth, this study investigated the physical, strength, and freeze/thaw resistances of porous concrete for plant growth, prepared by replacing cement with blast furnace slag powder at 60% by weight, and replacing natural stone aggregates with coarse blast furnace slag aggregates at rates of 0%, 20%, 40%, 60% and 100% by weight. In addition, the effects of adding natural jute fiber and styrene butadiene (SB) latex to these concrete mixtures were evaluated. The void ratio, compressive strength, and freeze/thaw resistance of the samples were measured. With increasing replacement rate of blast furnace aggregates, addition of latex, and mixing of natural jute fiber the void ratio of the concrete was increased. Compressive strength decreased as the replacement rate of blast-furnace slag aggregates increased. The compressive strength decreased after 100 freeze/thaw cycles, regardless of the replacement rate of blast furnace slag aggregates or of the addition of natural jute fiber and latex. The addition of natural jute fiber and latex decreased the compressive strength after 100 freeze/thaw cycles. The test results indicate that the control mixture satisfied the target compressive strength of 10 MPa and the target void ratio of 25% at replacement rates of 0% and 20% for blast furnace aggregates, and that the mixtures containing latex satisfied the criteria up to an aggregate replacement rate of 60%. However, the mixtures containing natural jute fiber did not satisfy these criteria. The relationship between void ratio and residual compressive strength after 100 freeze/thaw cycles indicates that the control mixture and the mixtures containing jute fiber at aggregate replacement rates of 20% and 40% satisfied the target void ratio of 25% and the target residual compressive strength of over 80% after 100 freeze/thaw cycles. The mixtures containing latex and aggregate replacement rates up to 60% satisfied the target void ratio and compressive strength. View Full-Text
Keywords: by product materials; blast furnace slag aggregates; blast furnace slag powder; mechanical properties; latex polymer; void ratio; porous concrete for plant growth by product materials; blast furnace slag aggregates; blast furnace slag powder; mechanical properties; latex polymer; void ratio; porous concrete for plant growth
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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Kim, H.-H.; Kim, C.-S.; Jeon, J.-H.; Park, C.-G. Effects on the Physical and Mechanical Properties of Porous Concrete for Plant Growth of Blast Furnace Slag, Natural Jute Fiber, and Styrene Butadiene Latex Using a Dry Mixing Manufacturing Process. Materials 2016, 9, 84.

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