Effect of Air-cooled Blast Furnace Slag as Fine Aggregate on the Properties of Cement Mortar
WANG Aiguo1, SHI Yan2, LIU Kaiwei1, SUN Daosheng1, LU Bangcheng1, LIU Peng1
1 Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei 230022; 2 Research Center of Water Engineering Safety and Disaster Prevention of Ministry of Water Resources, Changjiang River Scientific Research Institute, Wuhan 430010
Abstract: Compositions, structures and properties of air-cooled blast furnace slag and air-cooled blast furnace slag sand (ABFSS) were tested, workability and mechanical properties of mortars prepared with ABFSS and natural river sand (NRS) were contrastively investigated, mechanism of ABFSS improving the mechanical properties of mortar was analyzed from interface structure and pore structure. The results show that ABFSS is composed of many aggregate particles with rough surface and a number of powder particles, particles with rough surface texture improve interfacial structure between aggregate particles and matrix. Powder particles in the ABFSS reduce void of aggregate, improve cohesiveness and fluidity of fresh mortar and increase compactness of hardened mortar. ABFSS can be used to produce a mortar with better mechanical properties than corresponding mortar made with NRS, but it reduces the workability of mortar.
王爱国, 石妍, 刘开伟, 孙道胜, 吕邦成, 刘朋. 高炉重矿渣作为细骨料对水泥砂浆性能的影响*[J]. 《材料导报》期刊社, 2017, 31(12): 121-125.
WANG Aiguo, SHI Yan, LIU Kaiwei, SUN Daosheng, LU Bangcheng, LIU Peng. Effect of Air-cooled Blast Furnace Slag as Fine Aggregate on the Properties of Cement Mortar. Materials Reports, 2017, 31(12): 121-125.
1 Mundra S, Sindhi P R,Chandwani V, et al. Crushed rock sand-An economical and ecological alternative to natural sand to optimize concrete mix[J]. Perspectives Sci,2016,8:345. 2 Chen Jialong, Zhou Wenjuan. Discussion on development and problems of artificial sand in China[J]. Architect Technol,2007,38(11):849(in Chinese). 陈家珑, 周文娟. 我国人工砂的发展与问题探讨[J]. 建筑技术,2007,38(11):849. 3 Ms Hameed, Ass Sekar. Properties of green concrete containing quarry rock dust and marble sludge powder as fine aggregate[J]. J Eng Appl Sci,2009, 4(4):1819. 4 Liu Xiumei. Research on manufactured sand as concrete fine aggregate[D]. Jinan: Jinan University,2013(in Chinese). 刘秀美. 机制砂作混凝土细骨料的研究[D]. 济南: 济南大学,2013. 5 YB/T 4178-2008, 混凝土用高炉重矿渣碎石[S]. 6 Jiang Haimin. Research and application of high titanium heavy slag aggregate of high performance concrete[D]. Wuhan: Wuhan University of Technology,2011(in Chinese). 江海民. 高钛重矿渣集料制备高性能混凝土的研究与应用[D]. 武汉: 武汉理工大学,2011. 7 Ding Qingjun, Liu Xiaoqing, Guan Li, et al. Effect of high titanium slag on autogenous shrinkage and creep of concrete and their mechanism[J]. J Wuhan University of Technology,2014,36(1):29(in Chinese). 丁庆军, 刘小清, 管理, 等. 高钛重矿渣砂对混凝土自收缩与徐变影响及其机理研究[J]. 武汉理工大学学报,2014,36(1):29. 8 Mehta P K.Concrete: Microstructure, properties and materials[M]. 3rd Edition. New York: MeGraw Hill,2005. 9 吴中伟, 廉慧珍. 高性能混凝土[M]. 北京: 中国铁道出版社,1999.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2017, Vol. 31 
