Assessing the effect of GGBS content and aggregate characteristics on drying shrinkage of roller compacted concrete. (20th March 2019)

• Record Type: Journal Article
• Authors: Saluja, Sorabh; Kaur, Kulwinder; Goyal, Shweta; Bhattacharjee, Bishwajit
• Is Part Of: Construction & building materials. Volume 201(2019)
• Page Start: 72
• Page End: 80
• Publication Date: 2019-03-20
• Subjects: Roller compacted concrete -- Drying shrinkage strain -- Aggregate characteristics -- GGBS -- Multi regression model; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2018.12.179
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Shrinkage strain of RCC with coarse aggregate variation and GGBS are studied. Mixes having limestone aggregate experience lesser shrinkage strain than crushed gravel. Multi-regression model is developed to predict shrinkage strain for RCC. High correlation coefficient proves the effectiveness of developed model for RCC mixes. Abstract: Roller compacted concrete (RCC) has gained acceptance as a paving material due to its strength, economy and fast placement. In this paper, variation in aggregate type and influence of GGBS on drying shrinkage properties of RCC was explored. The experimental results indicate that crushed gravel aggregates presents higher shrinkage strain as compared to limestone. Also, the shrinkage strain of RCC increased with the increase in replacement level of cement with GGBS. Further, a multivariable regression model is developed for shrinkage strain prediction of RCC, considering the effect of aggregate type and percentage incorporation of GGBS on the shrinkage behaviour. The obtained higher correlation coefficient indicates that the developed model can be effectively used to predict the shrinkage strain of RCC.