Strength development of cement-treated sand using different cement types cured at different temperatures

• Published in: MATEC Web of Conferences Vol. 195; p. 1006
• Main Authors: Ho, Lanh Si, Nakarai, Kenichiro, Eguchi, Kenta, Sasaki, Takashi, Morioka, Minoru
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01.01.2018
• Subjects: Cement; Cement Hydration; Cement Types; Cement-Treated Sand; Compressive Strength; Curing; Curing Temperatures; Mortars (material); Organic chemistry; Portland cements; Pozzolanic Reaction; Sand
• ISSN: 2261-236X; 2274-7214; 2261-236X
• DOI: 10.1051/matecconf/201819501006

This study aimed to investigate the strength development of cement-treated sand using different cement types: ordinary Portland cement (OPC), high early strength Portland cement (HPC), and moderate heat Portland cement (MPC) cured at different temperatures. The cementtreated sand specimens were prepared with 8% of cement content and cured under sealed conditions at 20οC and 40οC, and mortar specimens were also prepared for reference. The results showed that the compressive strength of cement-treated sand increased in order of MPC, OPC, and HPC under high curing temperatures. It was interesting that the compressive strength of the specimens using HPC was much larger than that of the specimen using OPC and MPC under 20οC due to the larger amount of chemically bound water. Additionally, it was revealed that under high curing temperatures, the pozzolanic reaction was accelerated in the cement-treated sand; this may be caused by the high proportions of sand in the mixtures.