Assessing the effects of supplementary cementitious materials on the performance of low-cement roller compacted concrete pavement
✍ Scribed by Farshid Vahedifard; Mahmoud Nili; Christopher L. Meehan
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 387 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0950-0618
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✦ Synopsis
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.