Assessing the Effects of Supplementary Cementitious Materials on the Performance of Low-Cement Roller Compacted Concrete Pavement
Farshid Vahedifard1; Mahmoud Nili2; Christopher L. Meehan3
1Graduate Student, University of Delaware, Dept. of Civil and Environmental Engineering, 301 DuPont Hall, Newark, DE 19716, U.S.A.
E-mail: farshid@udel.edu (corresponding author)
2Civil Engineering Department, Engineering Faculty, Bu-Ali Sina University, Hamedan, Iran
E-mail: nili36@yahoo.co.uk
3Assistant Professor, University of Delaware, Dept. of Civil and Environmental Engineering, 301 DuPont Hall, Newark, DE 19716, U.S.A.
E-mail: cmeehan@udel.edu
Construction and Building Materials, 2010, Volume 24, Number 12, pp. 2528-2535
Abstract
Roller compacted concrete pavements (RCCP) are widely used for a variety of industrial and heavy-duty pavement applications that involve low speed traffic. The aim of this investigation is to evaluate the effects of using supplementary cementitious materials – silica fume and pumice – on the workability, compressive strength, and frost resistance of non-air-entrained low-cement content RCCP mixtures. Eight different RCCP mixtures were produced with four types of binder and two binder contents. A series of consistency, compressive strength, and long-term freeze-thaw tests were conducted. Test results indicate that the frost resistance of the low-cement RCCP mixtures improves with higher cementitious materials content. The addition of 10% silica fume increased both the compressive strength and frost resistance of the RCC mixtures; however, it significantly decreased the workability of fresh mixtures. The pumice made the specimens more workable, but had a negative impact on both the compressive strength and frost resistance.
Keywords
Roller compacted concrete; Freezing and thawing; Compressive strength; Workability; Pumice; Silica fume
Reference
Vahedifard, F., Nili, M., and Meehan, C. L. (2010). “Assessing the Effects of‏ Supplementary Cementitious Materials on the Performance of Low-Cement Roller Compacted Concrete Pavement.” Construction and Building Materials, Elsevier, 24(12), 2528-2535. (doi:10.1016/j.conbuildmat.2010.06.003)