[1]徐梓凌,姜久红,王云飞,等. 基于Weibull模型聚丙烯纤维水泥砂浆冲击寿命分析[J].湖北工业大学学报,2023,(4):105-110+116.
　XU Ziling,JIANG Jiuhong,WANG Yunfei,et al. Impact Life analysis of Polypropylene Fiber Cement Mortar Based on a Two-parameter Weibull Distribution Probability Model[J].,2023,(4):105-110+116.
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 基于Weibull模型聚丙烯纤维水泥砂浆冲击寿命分析()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2023年第4期
页码:
105-110+116
栏目:
湖北工业大学学报
出版日期:
2023-08-30

文章信息/Info

Title:
 Impact Life analysis of Polypropylene Fiber Cement Mortar Based on a Two-parameter Weibull Distribution Probability Model
文章编号:
1003-4684(2023)04-0105-06
作者:
 徐梓凌;  姜久红;  王云飞;  刘泽立
 湖北工业大学土木建筑与环境学院 湖北 武汉 430068
Author(s):
 XU Ziling;  JIANG Jiuhong;  WANG Yunfei;  LIU Zeli
 School of Civil Engin., Architecture and Environment, Hubei Univ. of Tech., Wuhan 430068,China
关键词:
 ; 水泥砂浆;  聚丙烯纤维;  抗冲击性能;  双参数Weibull分布
Keywords:
 ; cement mortar;  polypropylene fiber;  impact resistance;  two-parameter Weibull distribution
分类号:
TU43
文献标志码:
A
摘要:
 为提升水泥砂浆的抗冲击性能，在水泥砂浆中分别掺入不同掺量（0.3%、0.35%和0.4%）和直径（20 μm、30 μm和48 μm）的聚丙烯纤维。通过落锤冲击试验统计水泥砂浆初裂和终裂时的冲击次数对水泥砂浆抗冲击性能进行综合分析和评价。试验结果表明，水泥砂浆抗冲击性能与聚丙烯纤维掺量成正比，与聚丙烯纤维直径没有展现出很好的相关性。基于试验数据，通过双参数Weibull分布对不同失效概率下水泥砂浆冲击寿命进行了预测，并建立相应水泥砂浆的损伤演化模型。结果表明利用双参数Weibull分布推导的预测值与试验数据之间的平均误差最高仅为4.21%，表示双参数Weibull分布的预测精度很高，这为聚丙烯纤维在实际工程中的耐久性评价和寿命预测提供了重要的参考价值和理论依据。
Abstract:
 To enhance the impact resistance of the cement mortar, polypropylene fibers of different contents (0.3%, 0.35% and 0.4%) and diameters (20μm, 30μm and 48μm) were blended into the cement mortar. The impact resistance of cement mortar was comprehensively analyzed and evaluated by counting the number of impacts at the initial and final cracking of cement mortar through the drop hammer impact test. The test results showed that the impact resistance of cement mortar was proportional to the amount of polypropylene fibers dosed and did not show a good correlation with the diameter of polypropylene fibers. Based on the experimental data, the impact life of cement mortar was predicted by two-parameter Weibull distribution for different failure probabilities, and the damage evolution model of the corresponding cement mortar was established. The results show that the average error between the predicted values derived using the two-parameter Weibull distribution and the experimental data is only 4.21% at the highest, indicating that the prediction accuracy of the two-parameter Weibull distribution is high, which provides an important reference value and theoretical basis for the durability evaluation and life prediction of polypropylene fibers in practical engineering.

参考文献/References:

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备注/Memo

备注/Memo:
 ［收稿日期］ 2021-12-06
［第一作者］ 徐梓凌（1997-），男，湖北石首人，湖北工业大学硕士研究生，研究方向为水泥基复合材料的力学及耐久性能。
［通信作者］ 姜久红（1969-），女，吉林伊通人，工学博士，湖北工业大学教授，研究方向为结构动力学。
更新日期/Last Update: 2023-08-26