基于NSGM(1,3)模型的短切聚丙烯纤维-磷建筑石膏复合材料强度预测

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Abstract In order to investigate the influence of the length and doping amount of short-cut polypropylene fibers on the strength of short-cut polypropy-lene fiber-phosphorus gypsum composites, a homogeneous experimental scheme was used to analyze the changes of the adiabatic flexural strength and compressive strength of 3mm, 6mm and 9mm short-cut polypropylene fibers at the doping amounts of 0%—2.8%. The NSGM(1,3) model was used to model and predict the strength of the composites, and the results showed that: with the increase of fiber length, the adiabatic flexural strength and compressive strength of the composites increased with the increase of fiber length at the same fiber doping level; with the increase of fiber doping level, the adiabatic flexural strength and compressive strength of the composites showed a trend of first increasing and then decreasing at the same fiber length; the NSGM(1,3) model established in this paper was used to predict the strength of the composites. The NSGM(1,3) model can achieve the effective simulation and prediction of the dry flexural strength and compressive strength of short-cut polypropy-lene fiber-phosphorus building gypsum with the average relative simulation error of 1.04% and 1.57%, and the average relative prediction error of 6.80% and 7.13%.

Key words： phosphorus building gypsum polypropylene fiber fiber content fiber length strength prediction NSGM(1,3)

Published: 09 December 2021

CLC number:

TQ177.3+2

Fund:This work was financially supported by the National Natural Science Foundation of China (51662022), the Key R&D Program of Yunnan Provincial Department of Science and Technology(202003AC100001) and the Industrial High-tech Project of Yunnan Provincial Science and Technology Department(202003AA080032).

About author:: Lei Wu is currently working as a PH.D candidate in Faculty of Civil Engineering,KMUST. His research interests include building materials and structural engineering.
Zhong Tao received his PhD degree in structural engineering from Xi'an University of Architecture and Technology in 2000. He is a professor and doctoral supervisor of Kunming University of Technology now. His research interests are in building materials and structural engineering.

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	WU Lei
	TAO Zhong
	ZHAO Zhiman
	TAO Yan
	ZHANG Yi
	LIU Zhuo

Cite this article:

WU Lei,TAO Zhong,ZHAO Zhiman, et al. Strength Prediction of Short-cut PP Fiber-Phosphorus Building Gypsum Composites Based on NSGM(1,3) Model[J]. Materials Reports, 2021, 35(z2): 655-659.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/Iz2/655

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