Experimental Research on Mixture Ratio of Different Fibers Reinforced Alkali-Activated Slag Cementitious Material
In order to save resources and change wastes into valuables, a new type of green environmental protection material-plant fiber reinforced alkali slag cementitious material was developed in this paper. The toughening effect of high elastic modulus fiber (polypropylene fiber, fine steel fiber, coarser steel fiber) reinforced alkali slag cementitious material was also compared transversely. The effects of alkali activator type, sodium silicate modulus, alkali content, water dosage, fiber type and fiber treatment method on the mechanical properties of alkali slag cementitious materials were comprehensively investigated. The results show that the flexural strength and compressive strength of the specimens added with sodium silicate are higher than those of the specimens added with sodium silicate. The flexural strength and compressive strength of mortar with M=1.0 can reach 15.4 MPa and 130 MPa respectively, which are greater than those of mortar with M=2.0 under the same conditions. Two optimal proportions of alkali slag cementitious materials were obtained, which proved that wheat straw had better reinforcing effect than rice straw and corn straw, and fine steel fiber had the best reinforcing effect compared with wheat straw, polypropylene fiber and coarser steel fiber.
J. Zhu et al., "Experimental Research on Mixture Ratio of Different Fibers Reinforced Alkali-Activated Slag Cementitious Material," Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering), vol. 44, no. 1, pp. 97-102, Wuhan University of Technology, Apr 2020.
The definitive version is available at https://doi.org/10.3963/j.issn.2095-3844.2020.01.018
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Alkali-activated slag cementitious material; Fiber; Mechanical property; Micro; Mixture ratio
International Standard Serial Number (ISSN)
Article - Journal
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01 Apr 2020