Commenced in January 2007
Paper Count: 32009
Feasibility of Ground Alkali-Active Sandstone Powder for Use in Concrete as Mineral Admixture
Abstract:Alkali-active sandstone aggregate was ground by vertical and ball mill into particles with residue over 45 μm less than 12%, and investigations have been launched on particles distribution and characterization of ground sandstone powder, fluidity, heat of hydration, strength as well as hydration products morphology of pastes with incorporation of ground sandstone powder. Results indicated that ground alkali-active sandstone powder with residue over 45 μm less than 8% was easily obtainable, and specific surface area was more sensitive to characterize its fineness with extension of grinding length. Incorporation of sandstone powder resulted in higher water demand and lower strength, advanced hydration of C3A and C2S within 3days and refined pore structure. Based on its manufacturing, characteristics and influence on properties of pastes, it was concluded that sandstone powder was a good selection for use in concrete as mineral admixture.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.2021791Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 565
 Tang M S. Review on AAR development over the world. China Concrete and Cement Products, 1993, 1:4-6.
 Shi, C, Shi, Z, Hu, X, et al. A review on alkali-aggregate reactions in alkali-activated mortars/concretes made with alkali-reactive aggregates. Materials and Structure, 2015, 48(3): 621-628.
 Costa, F L, Torres, A S& Neves, R.A. J. Analysis of concrete structures deteriorated by alkali-aggregate reaction: case study. Journal of Building Pathology and Rehabilitation, 2016, 1: 13.
 Mohamed, I, Curtil, L, Ronel-Idrissi, S. et al. Influence of composite materials confinement on alkali aggregate expansion. Materials and Structure, 2005, 38(3): 387-394.
 Mo, I. X. Y., Xu, Z. Z., Wu, K. R. et al. Effectiveness of LiOH in inhibiting alkali-aggregate reaction and its mechanism(J). Materials and Structure, 2005, 38(1): 57-61.
 Li P X, Wang L, Peng S S. Experimental study on measures for inhibiting alkali - aggregate reaction of quartz sandstone. Yangtze River, 2013,7:75-78.
 Li G W, Zhou Q W. Engineering measures for inhibiting concrete alkali-aggregate response during construction of high arch dam of Jinping I Hydropower Station. Water Resources and Hydropower Engineering, 2013, 1:45-49.
 Li J Y. Alkali-aggregat reaction in dam concrete of China.Water Power, 2005, 1:34-37.
 Yang H Q, Li P X, Chen X. The State-of-art of Alkali Aggregate Reaction of Hydraulic Concrete. Journal of Yangtze River Scientific Research Institute, 2014, 10:58-62.
 Yang H Q, Li P X. Experimental study on alkali-reactive granitic aggregates of Three Gorges project. Journal of Hydroelectric Engineering, 2010, 2:222-227.
 Dong Y, Yang H Q, Li P X. Research on inhibition of alkali aggregate reactivity with natural pozzolans. Concrete, 2011, 11:77-79.
 Zhu B L, Huang X, Guo Ye, e tal. Packing Density of Cement in Paste with Continuous Grain Size Distribution. Journal of Building Materials, 2006, 4:447-452.
 Wang C, Yang C H, Qian J S, e tal. Behavior and Mechanism of Pozzolanic Reaction Heat of Fly Ash and Ground Granulated Blastfurnace Slag at Early Age. Journal of The Chinese Ceramic Society, 2012, 7:1050-1058.
 Song J W, Wang L, Liu S H, et al. Functionary Mechanism of Limestone Powder in Ultra High Performance Cement-Based Materials. Bulletin of the Chinese Ceramic Society, 2016, 4:4104-4109.