Effects of Quarry Dust as Partial Sand Replacement on Compressive Strength and Crack Profile of Cement Composites

Abstract:

This research presents the findings of experimental works in terms of mechanical properties and crack profile of cement composites containing quarry dust at different percentages as a partial sand replacement. The compositions of quarry dust were varied from 10 to 20 wt. % and were mixed into five different ratios. It was found that 0.45 water cement ratio was suitable to mix all proportions and values of slump were observed have been increased with the increasing percentage of quarry dust in cement composites. The compressive strength tests were carried out and the results showed that the compressive strength decreased at each 2.5 percent interval of quarry dust at 7 and 28 days of curing. However, the strength developments of cement composites were increased corresponding to the ages of curing. The crack profiles of cement composites have been analyzed to investigate the strength developments of the cement composites. According to the results, the cracks in the specimens were in shearing pattern at 10 and 12.5 wt. % of quarry dust in cement composites. Meanwhile, as the contents of quarry dust at 15, 17.5 and 20 wt. %, the specimens failed in shearing and splitting patterns. According to the findings of compressive strength and crack profile, the contents of quarry dust as a partial sand replacement is 12.5 wt. % were more suitable to be utilized in cement composite

• Periodical: Materials Science Forum (Volume 819)
• Pages: 399-404
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.819.399
• Online since: June 2015
• Authors: M. Madzura, Mazlee Mohd Noor, Shamsul Baharin Jamaludin
• Keywords: Cement Composites, Compressive Strength, Crack Profile, Partial Sand Replacement, Quarry Dust

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