玻璃纤维与钢纤维混掺对海水珊瑚砂工程水泥基复合材料动态劈裂抗拉性能的影响

doi:10.16552/j.cnki.issn1001-1625.2025.0493

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (10): 3547-3561.DOI: 10.16552/j.cnki.issn1001-1625.2025.0493

玻璃纤维与钢纤维混掺对海水珊瑚砂工程水泥基复合材料动态劈裂抗拉性能的影响

秦玉琳^1,2, 穆朝民^1,2, 张晓宇², 钟美婷², 章雨³

1.安徽理工大学深部煤炭安全开采与环境保护全国重点实验室,淮南 232001;
2.安徽理工大学安全科学与工程学院,淮南 232001;
3.安徽理工大学土木建筑学院,淮南 232001

收稿日期:2025-05-15 修订日期:2025-07-10 出版日期:2025-10-15 发布日期:2025-11-03
通信作者: 穆朝民,博士,教授。E-mail:chmmu@mail.ustc.edu.cn
作者简介:秦玉琳(2001—),女,硕士研究生。主要从事混凝土动态力学性能方面的研究。E-mail:yulinqin@aust.edu.cn
基金资助:
国家重点研发计划(2021YFC3100802)

Effects of Hybrid Glass Fiber and Steel Fiber on Dynamic Splitting Tensile Properties of Seawater Coral Sand Engineered Cementitious Composites

QIN Yulin^1,2, MU Chaomin^1,2, ZHANG Xiaoyu², ZHONG Meiting², ZHANG Yu³

1. National Key Laboratory of Safe Mining of Deep Coal and Environmental Protection, Anhui University of Science and Technology, Huainan 232001, China;
2. School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China;
3. School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China

Received:2025-05-15 Revised:2025-07-10 Published:2025-10-15 Online:2025-11-03

摘要/Abstract

摘要： 在岛礁工程建设中使用海水珊瑚砂制备工程水泥基复合材料具有控制工程成本与缩短工程工期的优势。为研究玻璃纤维(GF)和钢纤维(SF)体积掺量对海水珊瑚砂工程水泥基复合材料(SCECC)动态劈裂抗拉性能的影响,对使用不同体积分数GF替代SF的SCECC进行动、静态劈裂抗拉性能测试,探讨了GF和SF体积比、应力率对SCECC能量耗散特性、动态强度增长因子(DIF)、动态劈裂抗拉强度和拉伸应变场的影响。结果表明,SF与GF的掺入使SCECC的静态劈裂抗拉强度随GF体积分数增加而降低,GF为体积分数为0%、SF体积分数为1.500%时,静态劈裂抗拉强度提升了33.56%。当GF与SF体积比为1:3、应力率为377.08 GPa/s时,动态劈裂抗拉强度达到最大值22.33 MPa。随着应力率的增加,SCECC的DIF对应力率的敏感性增强,最大DIF达2.58;在应力率等级Ⅳ(371.29~381.46 GPa/s)下,SCECC吸能系数最大提升了34.54%。SF与GF混杂掺入改善了断裂模式,使裂纹从单裂纹向多裂纹转变。数字图像相关技术分析表明,掺入SF与GF可缓解应变集中,从而增强SCECC的抗破坏能力。

关键词: 海水珊瑚砂工程水泥基复合材料, 玻璃纤维, 钢纤维, 动态劈裂抗拉强度, 能量耗散, 应变率效应

Abstract: The use of seawater coral sand to prepare engineered cementitious composites in island reef engineering construction has the advantages of controlling engineering cost and shortening engineering construction period. In order to study the effect of volume fraction of glass fiber (GF) and steel fiber (SF) on the dynamic splitting tensile properties of seawater coral sand engineered cementitious composites (SCECC), the dynamic and static splitting tensile properties of SCECC with different volume fractions of GF instead of SF were tested. The effects of volume ratio of GF and SF and stress rate on energy dissipation characteristics, dynamic intensity growth factor (DIF), dynamic splitting tensile strength and tensile strain field of SCECC were discussed. The results show that the addition of SF and GF reduces the static splitting tensile strength of SCECC with the increase of volume fraction of GF. When the volume fraction of GF is 0% and the volume fraction of SF is 1.500%, the static splitting tensile strength increases by 33.56%. When the volume ratio of GF to SF is 1:3 and the stress rate is 377.08 GPa/s, the dynamic splitting tensile strength reaches the maximum value of 22.33 MPa. With the increase of stress rate, the sensitivity of DIF of SCECC to stress rate increases, and the maximum DIF is 2.58. Under the stress rate grade Ⅳ (371.29~381.46 GPa/s), the dissipation rate of SCECC increased by 34.54%. The hybrid incorporation of SF and GF improves the fracture mode and transforms the crack from single crack to multiple cracks. The analysis of digital image correlation technique shows that the incorporation of SF and GF can alleviate the strain concentration and enhance the damage resistance of SCECC.

Key words: seawater coral sand engineered cementitious composite, glass fiber, steel fiber, dynamic splitting tensile strength, energy dissipation, strain rate effect

中图分类号:

TU528

秦玉琳, 穆朝民, 张晓宇, 钟美婷, 章雨. 玻璃纤维与钢纤维混掺对海水珊瑚砂工程水泥基复合材料动态劈裂抗拉性能的影响[J]. 硅酸盐通报, 2025, 44(10): 3547-3561.

QIN Yulin, MU Chaomin, ZHANG Xiaoyu, ZHONG Meiting, ZHANG Yu. Effects of Hybrid Glass Fiber and Steel Fiber on Dynamic Splitting Tensile Properties of Seawater Coral Sand Engineered Cementitious Composites[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(10): 3547-3561.

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玻璃纤维与钢纤维混掺对海水珊瑚砂工程水泥基复合材料动态劈裂抗拉性能的影响

Effects of Hybrid Glass Fiber and Steel Fiber on Dynamic Splitting Tensile Properties of Seawater Coral Sand Engineered Cementitious Composites

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