Title

Experimental Research on Mixture Ratio of Different Fibers Reinforced Alkali-Activated Slag Cementitious Material

Alternative Title

不同纤维增强碱矿渣胶凝材料的配合比试验研究

Abstract

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.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Alkali-activated slag cementitious material; Fiber; Mechanical property; Micro; Mixture ratio

International Standard Serial Number (ISSN)

2095-3844

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

Chinese

Rights

© 2020 Wuhan University of Technology, All rights reserved.

Publication Date

01 Apr 2020

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