| 不同纤维掺量下聚乙烯醇纤维增强工程水泥复合材料梁剪切韧性试验 |
| |
| 引用本文： | 王玉清,刘潇,高元明,刘曙光. 不同纤维掺量下聚乙烯醇纤维增强工程水泥复合材料梁剪切韧性试验[J]. 复合材料学报, 2019, 36(8): 1968-1976. DOI: 10.13801/j.cnki.fhclxb.20181108.006 |
| |
| 作者姓名： | 王玉清 刘潇 高元明 刘曙光 |
| |
| 作者单位： | 1.内蒙古工业大学 土木工程学院, 呼和浩特 010051; |
| |
| 基金项目： | 国家自然科学基金（51368041）；内蒙古自治区高等学校科学研究项目（NJZY093） |
| |
| 摘 要： | 为研究聚乙烯醇纤维增强工程水泥复合材料（PVA/ECC）无腹筋梁的剪切韧性，基于5组PVA/ECC梁受剪破坏试验结果，以剪切韧性指数和斜裂缝综合指数为指标，对不同纤维掺量下PVA/ECC梁的斜截面剪切韧性进行了研究与评价。结果表明:PVA纤维的掺入能改善梁的开裂性能，明显提高梁受荷全过程的变形能力及斜截面承载力，从而提高构件的剪切韧性；PVA纤维体积分数在0~2vol%范围内时，其值越大，加载过程中消耗的能量越多，斜截面抗剪承载力越高，破坏之前的总变形越大，梁的剪切韧性越好。
|
| 关 键 词： | 聚乙烯醇纤维增强工程水泥复合材料 纤维掺量 剪切韧性 剪切韧性指数 斜裂缝综合指数 |
| 收稿时间： | 2018-09-11 |
Experimental study on shear toughness of polyvinyl alcohol fiber reinforced engineered cementitious composite beams with different fiber contents |
| |
| WANG Yuqing,LIU Xiao,GAO Yuanming,LIU Shuguang. Experimental study on shear toughness of polyvinyl alcohol fiber reinforced engineered cementitious composite beams with different fiber contents[J]. Acta Materiae Compositae Sinica, 2019, 36(8): 1968-1976. DOI: 10.13801/j.cnki.fhclxb.20181108.006 |
| |
| Authors: | WANG Yuqing LIU Xiao GAO Yuanming LIU Shuguang |
| |
| Affiliation: | 1.School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;2.School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;3.School of Mining and Technology, Inner Mongolia University of Technology, Hohhot 010051, China |
| |
| Abstract: | The shear toughness of polyvinyl alcohol fiber reinforced engineered cementitious composite (PVA/ECC) beams without stirrups was studied in this paper. Based on the testing results of shear failure from five groups of PVA/ECC beams, the shear toughness of the PVA/ECC beams with different fiber contents were analyzed and evaluated while using the shear toughness index and the diagonal crack composite index as indicators. The results show that the incorporation of PVA fibers can improve the cracking performance and the deformation capacity of the beam, enhance the bearing capacity of the oblique section, and thereby increase the shear toughness of the member. Additionally, within 0-2vol% of volume fraction of PVA fiber, the larger volume of PVA fiber, the more energy is consumed in the loading process, and the greater deflection is made before reaching to the ultimate load with the higher shear capacity of the oblique section, the better shear toughness of the beam is obtained. |
| |
| Keywords: | polyvinyl alcohol fiber reinforced engineered cementitious composite (PVA/ECC) fiber content shear toughness shear toughness index diagonal crack composite index |
|
| 点击此处可从《复合材料学报》浏览原始摘要信息 |
|
点击此处可从《复合材料学报》下载免费的PDF全文 |
