纳米SiO2-PVA纤维砂浆的抗冲击性及能耗预测

兰州理工大学学报 ›› 2026, Vol. 52 ›› Issue (1): 23-32.

纳米SiO₂-PVA纤维砂浆的抗冲击性及能耗预测

陈晨^1,2, 陈圣钊², 韦京利², 粟俊驰², 陈正^*2,3,4

1.柳州铁道职业技术学院铁道工程学院, 广西柳州 545007;
2.广西大学土木建筑工程学院, 广西南宁 530004;
3.广西大学省部共建特色金属材料与组合结构全寿命安全国家重点实验室, 广西南宁 530004;
4.广西大学工程防灾与结构安全教育部重点实验室, 广西南宁 530004

收稿日期:2024-12-13 出版日期:2026-02-28 发布日期:2026-03-05
通讯作者: 陈正(1982-),男,湖南祁东人,教授.Email:chenzheng@gxu.edu.cn
基金资助:
广西高校中青年科研基础能力提升项目(2023KY1451,2022KY1400),广西杰出青年科学基金项目(2022GXNSFFA035035)

The impact resistance and energy consumption prediction of Nano-SiO₂-PVA fiber reinforced mortar

CHEN Chen^1,2, CHEN Sheng-zhao², WEI Jing-li², SU Jun-chi², CHEN Zheng^2,3,4

1. School of Railway Engineering, Liuzhou Railway Vocational Technical College, Liuzhou 545007, China;
2. School of Civil Engineering and Architecture, Guangxi University, Nanning 530004,China;
3. State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China;
4. Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, China

Received:2024-12-13 Online:2026-02-28 Published:2026-03-05

摘要/Abstract

摘要： 为研究不同掺量纳米SiO₂、PVA纤维对水泥基材料静动态力学性能的影响,开展了纳米SiO₂砂浆、PVA纤维砂浆及纳米SiO₂-PVA纤维复合砂浆的抗压和抗折强度及抗冲击性试验,基于双参数威布尔分布对纳米SiO₂-PVA纤维砂浆的冲击次数和冲击耗能进行分析.结果表明:PVA纤维体积掺量为1.0%且纳米SiO₂掺量为1.8%时是最佳复合掺量,此时纳米SiO₂-PVA纤维砂浆的抗压和抗折强度相较于NC砂浆分别提高了8.4%和32%,初裂和破坏冲击耗能分别提升了833.3%和1 160.0%.PVA纤维掺入会导致砂浆的抗压强度低于NC砂浆,但是显著提升了初裂和破坏冲击耗能.纳米SiO₂和PVA纤维能充分发挥协同效应提升基体的密实性,PVA纤维的桥联作用及纳米SiO₂的增强作用,使水化产物覆盖并填充在由于PVA纤维掺入所形成孔隙中,细化了孔隙形态并延缓裂缝发展,并建立了不同失效概率下纳米SiO₂-PVA纤维砂浆的冲击次数和冲击耗能预测模型.

关键词: 纳米SiO₂, PVA纤维, 抗冲击性, 威布尔分布

Abstract: To study the effects of SiO₂ and PVA fibers on the static and dynamic mechanical properties of cement-based materials, the compressive strength, flexural, and impact resistance tests of Nano-SiO₂ mortar, PVA fiber mortar, and Nano-SiO₂-PVA fiber mortar were carried out. The impact number and impact energy of Nano-SiO₂-PVA fiber mortar were analyzed based on a two-parameter Weibull distribution. The results showed that the volume content of PVA fiber is 1.0 vol. % and the Nano-SiO₂ is 1.8%, the compressive strength and flexural strength of Nano-SiO₂-PVA fiber mortar are increased by 8.4% and 32%, respectively. Compared with ordinary mortar, the energy consumption of initial cracking and damage impact of Nano-SiO₂-PVA fiber mortar is increased by 833.3% and 1 160.0%, respectively. Although the addition of PVA fibers reduce the compressive strength of mortar, it significantly increases the energy consumption of initial cracking and damage impact.Nano-SiO₂ and PVA fiber exert a synergistic effect that improve the compactness of the matrix. Due to the bridging effect of PVA fiber and the filling effect of Nano-SiO₂, the matrix pores formed by PVA fibers are filled by the hydration products, refining pore morphology and delaying crack propagation. Furthermore, the impact times and impact energy consumption prediction models of Nano-SiO₂-PVA fiber mortar with different failure probabilities are established.

Key words: Nano-SiO₂, PVA fiber, impact resistance, Weibull distribution

中图分类号:

TU528

陈晨, 陈圣钊, 韦京利, 粟俊驰, 陈正. 纳米SiO₂-PVA纤维砂浆的抗冲击性及能耗预测[J]. 兰州理工大学学报, 2026, 52(1): 23-32.

CHEN Chen, CHEN Sheng-zhao, WEI Jing-li, SU Jun-chi, CHEN Zheng. The impact resistance and energy consumption prediction of Nano-SiO₂-PVA fiber reinforced mortar[J]. Journal of Lanzhou University of Technology, 2026, 52(1): 23-32.

参考文献

[1] 姚智高,林常,蔡舒,等.粉煤灰对PVA纤维/水泥基体界面作用及复合材料拉伸性能的影响 [J].硅酸盐通报,2022,41(7):2327-2336.
[2] 朱弘康,林常,蔡舒,等.PVA纤维类型对应变硬化地聚合物基复合材料力学性能的影响 [J].硅酸盐通报,2021,40(11):3693-3701.
[3] IRSHIDAT M R,AL-SHANNAQ A.Using textile reinforced mortar modified with carbon nano tubes to improve flexural performance of RC beams [J].Composite Structures,2018,200:127-134.
[4] 张鹏,李晨迪,王娟,等.纳米SiO₂和PVA纤维协同增强混凝土力学性能 [J].公路,2021,66(2):271-275.
[5] 熊辉霞,赵文杰.聚乙烯醇纤维增强水泥基复合材料研究进展 [J].硅酸盐通报,2017,36(6):1944-1950,1956.
[6] 生兆亮,辛欣,夏多田,等.纤维增强水泥基材料强度和微结构的影响因素研究 [J].硅酸盐通报,2020,39(10):3108-3114.
[7] LIU J,XIE X,LI L.Experimental study on mechanical properties and durability of grafted nano-SiO₂ modified rice straw fiber reinforced concrete [J].Construction and Building Materials,2022,347:128575.
[8] OH T,CHUN B,JANG Y S,et al.Effect of nano-SiO₂ on fiber-matrix bond in ultra-high-performance concrete as partial substitution of silica flour [J].Cement and Concrete Composites,2023,138:104957.
[9] LING Y,ZHANG P,WANG J,et al.Effect of PVA fiber on mechanical properties of cementitious composite with and without nano-SiO₂[J].Construction and Building Materials,2019,229:117068.
[10] 黄静静,李冬冬,吴鸣,等.纳米SiO₂/PVA纤维复合改性HVFC的断裂性能实验研究 [J].汕头大学学报(自然科学版),2018,33(4):71-80.
[11] ASSAEDI H,ALOMAYRI T,SIDDIKA A,et al.Effect of nanosilica on mechanical properties and microstructure of PVA fiber-reinforced geopolymer composite (PVA-FRGC) [J].Materials,2019,12(21):3624.
[12] 刘秋雨,薛刚,谭俊清,等.基于落锤冲击试验的钢渣细骨料混凝土抗冲击性能研究 [J].硅酸盐通报,2023,42(12):4399-4407.
[13] 朱学超.水泥混凝土抗冲击性能测定方法研究 [D].天津:天津大学,2016.
[14] 陈传尧.疲劳与断裂 [M].武汉:华中科技大学出版社,2002.
[15] 赵宇,杨军,马小兵.可靠性数据分析教程 [M].北京:北京航空大学出版社,2009.
[16] 魏昆仑.玄武岩纤维橡胶混凝土抗冲击及抗冲磨性能研究 [D].乌鲁木齐:新疆农业大学,2023.
[17] 中国建筑材料联合会.GB/T 14684—2011 建筑用砂 [S].北京:中国建筑工业出版社,2012.
[18] 中华人民共和国建设部.GB/T 50080—2002 普通混凝土拌和物性能试验方法 [S].北京:中国建筑工业出版社,2002.
[19] 中国建筑材料联合会.GB/T 17671—2021 水泥胶砂强度检验方法 [S].北京:中国建筑工业出版社,2021.
[20] 肖明清,封坤,杨仁杰,等.SFRC管片正截面设计方法适用性比较研究 [J].隧道建设,2021,41(9):1530-1537.
[21] 李振东,孟丹,王智鹏,等.纳米二氧化硅改性混凝土宏观性能及微观调控机理分析 [J].硅酸盐通报,2020,39(7):2145-2153.
[22] 陈升平,李素华.PVA纤维增强水泥基复合材料的性能试验研究 [J].湖北工业大学学报,2011,26(2):108-112.
[23] 黄可.PVA纤维增强水泥基复合材料力学性能及经验模型研究 [D].昆明:昆明理工大学,2021.
[24] CARMICHAEL M J,ARULRAJ G P.Impact resistance of concrete with nano materials [J].Materials Today: Proceedings,2021,37:677-684.
[25] 夏冬桃,谢少军,朱峰,等.基于Weibull分布的超短微丝钢纤维增强混凝土冲击寿命分析 [J].混凝土,2022(5):19-24.

纳米SiO₂-PVA纤维砂浆的抗冲击性及能耗预测

The impact resistance and energy consumption prediction of Nano-SiO₂-PVA fiber reinforced mortar

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 2

编辑推荐

Metrics

本文评价

[1]	王秀丽, 程荣荣, 朱中城, 梁海. 内置H型钢泥石流拦挡坝抗块石冲击性能研究[J]. 兰州理工大学学报, 2022, 48(5): 114-119.
[2]	王秀丽, 周磊. 泥石流冲击作用下CFRP加强型柔性索网体系动力响应分析[J]. 兰州理工大学学报, 2021, 47(1): 136-143.