硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (8): 2794-2805.DOI: 10.16552/j.cnki.issn1001-1625.2026.0178
徐广(
), 杜向琴(
), 吴廷杰, 朱元帅, 王春益, 刘兴杰
收稿日期:2026-02-25
修订日期:2026-03-16
出版日期:2026-08-15
发布日期:2026-09-01
通信作者:
杜向琴,博士,副教授。E-mail:202008004@gznu.edu.cn作者简介:徐广(1999—),男,硕士研究生。主要从事水泥基复合材料、固体废弃物资源化应用的研究。E-mail:3803571282@qq.com
基金资助:
XU Guang(
), DU Xiangqin(
), WU Tingjie, ZHU Yuanshuai, WANG Chunyi, LIU Xingjie
Received:2026-02-25
Revised:2026-03-16
Published:2026-08-15
Online:2026-09-01
摘要:
为缓解砂资源日益枯竭问题并改善砂浆的脆性缺陷,本研究利用陶瓷砂、橡胶微粒等质量替代机制砂并外掺聚丙烯纤维(PPF),设计、制作了9组不同配合比的复合砂浆试件。通过流动度测试、力学性能测试,以及扫描电子显微镜(SEM)、能谱仪(EDS)和压汞法孔隙率测试(MIP)试验,研究了陶瓷砂、PPF及橡胶微粒对砂浆工作性能、力学性能和微观结构的影响。结果表明,陶瓷砂替代50%(质量分数)机制砂时,砂浆的流动性不受影响,28 d抗压强度得到提高。复掺PPF与橡胶微粒会降低砂浆的流动度、抗压强度、劈裂抗拉强度及抗折强度,但优化了复合砂浆试件的韧性。陶瓷砂-砂浆界面密实饱满,陶瓷砂替代率为50%时,砂浆的孔隙率、平均孔径和孔隙面积均降低。PPF与橡胶微粒使砂浆界面过渡区变得薄弱,且PPF会增大砂浆的平均孔径及孔隙率,橡胶微粒则细化孔径体积、改善孔径分布,但会增加有害孔数量。
中图分类号:
徐广, 杜向琴, 吴廷杰, 朱元帅, 王春益, 刘兴杰. 混掺陶瓷-纤维-橡胶复合砂浆的宏观性能与微观结构分析[J]. 硅酸盐通报, 2026, 45(8): 2794-2805.
XU Guang, DU Xiangqin, WU Tingjie, ZHU Yuanshuai, WANG Chunyi, LIU Xingjie. Macroscopic Properties and Microstructure Analysis of Mixed Ceramic-Fiber-Rubber Composite Mortar[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(8): 2794-2805.
| Volume stability (boiling method) | Standard consistence/% | Fineness (45 μm)/% | Setting time/min | Flexural strength/MPa | Compressive strength/MPa | |||
|---|---|---|---|---|---|---|---|---|
| Initial | Final | 3 d | 28 d | 3 d | 28 d | |||
| Qualified | 30 | 9.7 | 205 | 300 | 5.9 | 10.6 | 28.2 | 55.6 |
表1 水泥性能参数
Table 1 Property parameter of cement
| Volume stability (boiling method) | Standard consistence/% | Fineness (45 μm)/% | Setting time/min | Flexural strength/MPa | Compressive strength/MPa | |||
|---|---|---|---|---|---|---|---|---|
| Initial | Final | 3 d | 28 d | 3 d | 28 d | |||
| Qualified | 30 | 9.7 | 205 | 300 | 5.9 | 10.6 | 28.2 | 55.6 |
| Length/mm | Diameter/μm | Density/(g·cm-3) | Elongation at break/% | Tensile strength/MPa | Elastic modulus/GPa |
|---|---|---|---|---|---|
| 5 | 39 | 0.91 | 20 | 390 | 5.3 |
表2 聚丙烯纤维的物理性能
Table 2 Physical properties of PPF
| Length/mm | Diameter/μm | Density/(g·cm-3) | Elongation at break/% | Tensile strength/MPa | Elastic modulus/GPa |
|---|---|---|---|---|---|
| 5 | 39 | 0.91 | 20 | 390 | 5.3 |
| Sample No. | Mass/g | |||||
|---|---|---|---|---|---|---|
| Cement | Mechanism sand | Ceramic sand | PPF | Rubber particle | Water | |
| JZ | 630.0 | 1 530.0 | 0 | 0 | 0 | 315.0 |
| C50F0R0 | 630.0 | 765.0 | 765.0 | 0 | 0 | 315.0 |
| C50F2R0 | 630.0 | 765.0 | 765.0 | 12.6 | 0 | 315.0 |
| C47.5F2R2.5 | 630.0 | 765.0 | 726.8 | 12.6 | 38.2 | 315.0 |
| C45F2R5 | 630.0 | 765.0 | 688.5 | 12.6 | 76.5 | 315.0 |
| C42.5F2R7.5 | 630.0 | 765.0 | 650.3 | 12.6 | 114.7 | 315.0 |
| C40F2R10 | 630.0 | 765.0 | 612.0 | 12.6 | 153.0 | 315.0 |
| C37.5F2R12.5 | 630.0 | 765.0 | 573.8 | 12.6 | 191.2 | 315.0 |
| C35F2R15 | 630.0 | 765.0 | 535.5 | 12.6 | 229.5 | 315.0 |
表3 配合比
Table 3 Mix proportion
| Sample No. | Mass/g | |||||
|---|---|---|---|---|---|---|
| Cement | Mechanism sand | Ceramic sand | PPF | Rubber particle | Water | |
| JZ | 630.0 | 1 530.0 | 0 | 0 | 0 | 315.0 |
| C50F0R0 | 630.0 | 765.0 | 765.0 | 0 | 0 | 315.0 |
| C50F2R0 | 630.0 | 765.0 | 765.0 | 12.6 | 0 | 315.0 |
| C47.5F2R2.5 | 630.0 | 765.0 | 726.8 | 12.6 | 38.2 | 315.0 |
| C45F2R5 | 630.0 | 765.0 | 688.5 | 12.6 | 76.5 | 315.0 |
| C42.5F2R7.5 | 630.0 | 765.0 | 650.3 | 12.6 | 114.7 | 315.0 |
| C40F2R10 | 630.0 | 765.0 | 612.0 | 12.6 | 153.0 | 315.0 |
| C37.5F2R12.5 | 630.0 | 765.0 | 573.8 | 12.6 | 191.2 | 315.0 |
| C35F2R15 | 630.0 | 765.0 | 535.5 | 12.6 | 229.5 | 315.0 |
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