耐碱玻璃纤维掺量对3D打印砂浆性能的影响研究

摘要/Abstract

摘要： 耐碱玻璃纤维作为一种性能优良的无机非金属纤维材料,在土木工程领域有很好的研究价值和应用潜力。而3D打印作为新兴技术,在土木工程领域有较高匹配度和广阔应用前景。本文通过在3D打印砂浆中掺入不同掺量的耐碱玻璃纤维并调节减水剂用量,制备一系列打印性能良好的砂浆,探究耐碱玻璃纤维掺量对砂浆力学性能的影响。试验结果表明:要获得良好的打印性能,跳桌试验流动度建议在180~220 mm之间;砂浆抗折强度随耐碱玻璃纤维掺量增加而提高,强度增幅最多可达99.2%;砂浆抗压强度随耐碱玻璃纤维掺量增加先提升后降低,纤维最优掺量为0.25%(质量分数)。

关键词: 耐碱玻璃纤维, 3D打印, 打印性能, 抗折强度, 抗压强度

Abstract: As an excellent inorganic nonmetallic fiber material, alkali-resistant glass fiber (ARGF) has a good research value and the application potential in the field of civil engineering. As an emerging technology, 3D printing technology has high matching degree and application prospect in civil engineering. In this study, by adding varied ARGF fiber content and adjusting superplasticizer dosages, a series of 3D printed mortar (3DPM) with good printing performance were made, and the effects of ARGF fiber content on the mechanical properties were explored. The results show that, to achieve good printing performance, the flow spread in jump table test was suggested to be ranging from 180 mm to 220 mm. With the increase of fiber content, the flexural strength of 3DPM significantly increaseds, and the increases rate up to 99.2%. With the increase of fiber content, the compressive strength of 3DPM first increases and then decreases, and the optimum fiber mass content is 0.25%.

Key words: alkali-resistant glass fiber, 3D printing, printing property, flexural strength, compressive strength

中图分类号:

TU528

肖博丰, 李古, 张广虎. 耐碱玻璃纤维掺量对3D打印砂浆性能的影响研究[J]. 硅酸盐通报, 2021, 40(6): 1889-1894.

XIAO Bofeng, LI Gu, ZHANG Guanghu. Effect of Alkali-Resistant Glass Fiber Content on Performance of 3D Printed Mortar[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(6): 1889-1894.

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