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Materials 2014, 7(6), 4739-4754; doi:10.3390/ma7064739

Influence of Aggregate Coated with Modified Sulfur on the Properties of Cement Concrete

Department of Civil Engineering, University of Texas at Arlington, Arlington, TX 76019, USA
School of Civil Engineering, Chungbuk National University, Chungbuk 361-763, Korea
Railway Inspection Section, Korea Infrastructure Safety & Technology Corporation, Gyeonggi 411-758, Korea
Author to whom correspondence should be addressed.
Received: 21 April 2014 / Revised: 10 June 2014 / Accepted: 10 June 2014 / Published: 20 June 2014
(This article belongs to the Special Issue Recycled Materials)
View Full-Text   |   Download PDF [1646 KB, uploaded 20 June 2014]   |  


This paper proposes the mixing design of concrete having modified sulfur-coated aggregate (MSCA) to enhance the durability of Portland cement concrete. The mechanical properties and durability of the proposed MSCA concrete were evaluated experimentally. Melting-modified sulfur was mixed with aggregate in order to coat the aggregate surface at a speed of 20 rpm for 120 s. The MSCA with modified sulfur corresponding to 5% of the cement weight did not significantly affect the flexural strength in a prism concrete beam specimen, regardless of the water-cement ratio (W/C). However, a dosage of more than 7.5% decreased the flexural strength. On the other hand, the MSCA considerably improved the resistance to the sulfuric acid and the freezing-thawing, regardless of the sulfur dosage in the MSCA. The coating modified sulfur of 5% dosage consequently led to good results for the mechanical properties and durability of MSCA concrete. View Full-Text
Keywords: modified sulfur; coated aggregate; durability; strength; freezing-thawing; acid resistance modified sulfur; coated aggregate; durability; strength; freezing-thawing; acid resistance

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Lee, S.-H.; Hong, K.-N.; Park, J.-K.; Ko, J. Influence of Aggregate Coated with Modified Sulfur on the Properties of Cement Concrete. Materials 2014, 7, 4739-4754.

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