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Properties of Alkali Activated Mortar Fresh and Hardened Properties Based on Fiber Reinforced Index
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Li LI1, 2, 3, Yujie WEI2, Zongli LI1, 2, Wensheng ZHANG3, Di SHI3, Dingqian LI2
Journal of the Chinese Ceramic Society | 2022, 50(8) : 2212 - 2220
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Journal of the Chinese Ceramic Society | 2022, 50(8): 2212-2220
• Research Articles •
Properties of Alkali Activated Mortar Fresh and Hardened Properties Based on Fiber Reinforced Index
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Li LI1, 2, 3, Yujie WEI2, Zongli LI1, 2, Wensheng ZHANG3, Di SHI3, Dingqian LI2
Affiliations
  • 1.Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A & F University, Xianyang 712100, Shaanxi, China
  • 2.College of Water Resources and Architectural Engineering, Northwest A & F University, Xianyang 712100, Shaanxi, China
  • 3.State Key Laboratory of Green Building Materials, Beijing 100024, China

    • LI Li (1986-), male, Ph.D., Associate Professor. E-mail:

About Author:

LI Li (1986-), male, Ph.D., Associate Professor. E-mail:

Published: 2022-08-20 doi: 10.14062/j.issn.0454-5648.20211188
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In order to explore the mechanism of action of fiber in alkali-activated materials, 26 groups of fiber reinforced alkali-activated mortar (FRAAM) were prepared at different length to diameter ratios, volume contents of polypropylene fiber (PPF) and water-binder ratios. The influence of fiber reinforced index (I) on the slump spread, flow rate, apparent density, ultrasonic wave velocity, compressive strength, bending strength, and crack fractal dimension of FRAAM was investigated. The results show that the effect of water-binder ratio on the plastic viscosity of FRAAM is more dominant than that on the yield stress. When I is less than critical I (Ic, i.e., 100), the influence of fibers is slight, the distance between fibers is far, and the workability of FRAAM is basically not affected. However, fibers are difficult to limit the cracking of mortar and improve its mechanical properties. When I is between Ic (i.e., 100) and dense I (Id, i.e., 350), the flexural strength, compressive strength and fracture fractal dimension of FRAAM improve, and the FRAAM can still flow freely under dead weight. When I is higher than Id (i.e., 350), significant fibrous clumps degrade the FRAAM workability, resulting in a poor compactness and a reduced compressive strength. The I thresholds of PPF-FRAAM are 100 and 350 for loose and tight packing, respectively, and the optimal volume fraction of PPF is between 100/(l/d) and 350/(l/d).

alkali-activated material  /  fiber reinforced concrete  /  fiber reinforcing index  /  mechanical properties  /  fractal dimension
李黎, 委玉杰, 李宗利, 张文生, 史迪, 李定乾. 基于纤维增强指数的碱激发砂浆物理力学性能. 硅酸盐学报, 2022 , 50 (8) : 2212 -2220 . DOI: 10.14062/j.issn.0454-5648.20211188
Li LI, Yujie WEI, Zongli LI, Wensheng ZHANG, Di SHI, Dingqian LI. Properties of Alkali Activated Mortar Fresh and Hardened Properties Based on Fiber Reinforced Index[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (8) : 2212 -2220 . DOI: 10.14062/j.issn.0454-5648.20211188
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Year 2022 volume 50 Issue 8
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Article Info
doi: 10.14062/j.issn.0454-5648.20211188
  • Receive Date：2021-12-31
  • Online Date：2026-10-20
  • Published：2022-08-20
Article Data
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History
  • Received：2021-12-31
  • Revised：2022-04-25
Funding
Affiliations
    1.Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A & F University, Xianyang 712100, Shaanxi, China
    2.College of Water Resources and Architectural Engineering, Northwest A & F University, Xianyang 712100, Shaanxi, China
    3.State Key Laboratory of Green Building Materials, Beijing 100024, China

Corresponding:

LI Zongli (1967-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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