Effects of wet-grinded superfine waste glass on the fresh properties and reaction characteristic of cement pastes. (30th June 2020)

• Record Type: Journal Article
• Authors: Wang, Yingbin; Li, Jiawei; He, Xingyang; Zheng, Zhengqi; Su, Ying; Zhao, Huang; Yang, Jin; Strnadel, Bohumír
• Is Part Of: Construction & building materials. Volume 247(2020)
• Publication Date: 2020-06-30
• Subjects: Waste glass powder -- Workability -- Chemical shrinkage -- Hydration; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2020.118593
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Long wet-grinding duration can modify the morphology of WGP particles. WGP dramatically improved the workability of fresh pastes regardless of the fineness. The WGP (D50 in the range of 0.9–10.5 μm) could accelerate the reaction of cement. The setting time could be shortened when the median grain size reduced to 5 μm. Abstract: This work aims at evaluating the influence of wet-grinded superfine waste glass powder (WGP) as a supplementary material in cement based materials. WGP with different fineness was evaluated and incorporated into cement with a proportion of 20%. The results showed the WGP particle had regular shape when the wet grinding duration reached 60 min. WGP dramatically improved the workability of fresh pastes regardless of the fineness. The setting time of WGP incorporated pastes was shortened if the median grain size was reduced to 5 μm. The WGP could accelerate the reaction of cement, higher chemical shrinkage and larger electrical resistivity.