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树脂基透水砖的制备与组分优化

Preparation and Component Optimization of Resin-Based Permeable Brick.

作者信息

Wang Xiaofu, Zhang Xiong

机构信息

Key Laboratory of Advanced Civil Engineering Materials of Education Ministry, School of Material Science and Technology, Tongji University, 4800 Cao'an Road, Shanghai 201804, China.

出版信息

Materials (Basel). 2020 Jun 13;13(12):2701. doi: 10.3390/ma13122701.

DOI:10.3390/ma13122701
PMID:32545752
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7345620/
Abstract

The present study aims to prepare resin-based permeable bricks with micron-sized pores using fine aggregate with a particle diameter of 0.08-0.6 mm and bisphenol-A epoxy resin, a polymer binder. The properties of the binder, the characteristic parameters of the aggregate, and the micro pore structure of the brick were studied in order to break through the limitations of traditional porous permeable materials. The dynamic mechanical properties of resin were analyzed by dynamic mechanical analysis (DMA). The frequency parameter of particle size of 10 kinds of aggregate from different regions were obtained by digital image processing, and the characteristic parameter (aggregate distribution coefficient α) was obtained by modified Gaussian distribution. The microstructure of porous brick was analyzed by scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDS). The test results show: (1) the glass transition temperature (Tg) of the resin is 61 °C; (2) the parameters of aggregate particle group will affect the performance of porous permeable materials; (3) the minimum effective pore diameter of the permeable brick is 30 μm, the maximum permeable rate is 6.22 × 10 - 2   cm / s and the compressive strength is 41.08 MPa. The conclusions of this study will provide an important reference for permeable materials in the micron-scale pore range and the selection of binder and aggregate materials.

摘要

本研究旨在使用粒径为0.08 - 0.6毫米的细骨料和聚合物粘结剂双酚A环氧树脂制备具有微米级孔隙的树脂基透水砖。研究了粘结剂的性能、骨料的特征参数以及砖的微孔结构，以突破传统多孔透水材料的局限性。通过动态力学分析（DMA）分析树脂的动态力学性能。通过数字图像处理获得来自不同地区的10种骨料粒径的频率参数，并通过修正的高斯分布获得特征参数（骨料分布系数α）。通过扫描电子显微镜 - 能量色散X射线光谱仪（SEM - EDS）分析多孔砖的微观结构。测试结果表明：（1）树脂的玻璃化转变温度（Tg）为61℃；（2）骨料颗粒组参数会影响多孔透水材料的性能；（3）透水砖的最小有效孔径为30μm，最大渗透率为6.22×10 - 2厘米/秒，抗压强度为41.08MPa。本研究结论将为微米级孔隙范围内的透水材料以及粘结剂和骨料材料的选择提供重要参考。

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