Converting hydration heat to achieve cement mixture with early strength and low hydrating-thermal dissipation. (1st October 2017)

• Record Type: Journal Article
• Authors: Liu, Huajie; Bu, Yuhuan; Guo, Quanqing; Sanjayan, Jay G.
• Is Part Of: Construction & building materials. Volume 151(2017)
• Page Start: 113
• Page End: 118
• Publication Date: 2017-10-01
• Subjects: Energy storage microsphere -- Converting hydration heat -- Cement mixture -- Early strength -- Low hydrating thermal dissipation; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2017.06.098
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Energy storage microsphere is developed by coating PCM in PMMA. Energy storage microsphere reduces the hydrating thermal dissipation obviously. The hydration heat of Aluminate cement is converted to cure Portland cement. Cement mixture with early strength and low hydrating thermal dissipation is achieved. Abstract: Cement mixture with the properties of early strength and low hydrating thermal dissipation is necessary to cementing the shallow natural gas hydrate formation in deep water area. The research objectives are designed to utilize the energy storage microsphere in cement mixture to achieve early strength and low hydrating thermal dissipation. Considering the strength and hydrating thermal dissipation, the mixture of Class G oil well cement and aluminate cement with the quality ratio of 1:1 is proposed. The polymethyl methacrylate microsphere is used to coat phase change materials to prepare the energy storage microsphere, which can be used in cement mixture directly and stably. The energy storage microsphere could reduce the hydrating thermal dissipation of cement mixture obviously. Because of converting the hydration heat of Aluminate cement to cure Portland cement and PMMA framework, energy storage microsphere has little negative effect on the early strength of cement mixture.