摘要
本实验制备了再生ABS塑料混凝土,选用不同浓度的硅烷偶联剂(SCA)溶液改善ABS材料相容性,通过力学性能试验以及抗氯离子渗透性实验研究了SCA溶液浓度对再生混凝土中ABS材料相容性的影响,并通过SEM微观分析观察ABS材料界面相容性情况。结果表明:随着SCA溶液浓度的增加,再生ABS塑料混凝土的力学性能和抗氯离子渗透性先上升后稳定,当SCA浓度为1.0%时,再生ABS塑料混凝土的立方体抗压强度、劈裂抗拉强度、抗折强度等力学性能,以及抗氯离子渗透性达到最大,相较于空白样,抗压强度提高61.1%,28 d劈裂抗拉强度提高90.9%,3 d抗折强度提高91.7%,氯离子迁移系数下降19%。SEM分析表明,此浓度下ABS材料分布均匀且界面结合牢固,说明1.0%SCA溶液对ABS材料的界面相容性改善效果最好。
In this paper, recycled ABS plastic concrete was prepared, and different concentrations of silane coupling agent(SCA) solution were selected to improve the compatibility of ABS material. The effects of SCA solution concentration on the compatibility of ABS material in recycled concrete were studied by mechanical properties test and chloride ion permeability test, and the interfacial compatibility of ABS material was observed by SEM microanalysis. The results show that with the increase of SCA concentration, the mechanical properties and chloride ion permeability resistance of recycled ABS plastic concrete first increase and then decrease slightly. When SCA concentration is 1%, the cube compressive strength, splitting tensile strength, flexural strength and chloride ion permeability resistance of recycled ABS plastic concrete reaches the maximum. Compared with the blank sample, the compressive strength increased by 61.1%, the splitting tensile strength increased by 90.9% at 28 d, the flexural strength increased by 91.7% at 3 d, and the chloride ion migration coefficient decreased by 19%. Moreover, the SEM image show that the ABS material improved with 1% SCA solution concentration is evenly distributed and the interface is firmly bonded. The results show that 1%SCA solution has the best effect on improving the interfacial compatibility of ABS.
作者
孙振华
蒋丽君
张海洋
SUN Zhen-hua;JIANG Li-jun;ZHANG Hai-yang(Henan College of Transportation,Zhengzhou 450000,China;Zhongben Testing and Certification Co.,Ltd.,Zhengzhou 450000,China)
出处
《塑料科技》
CAS
北大核心
2021年第5期53-56,共4页
Plastics Science and Technology
基金
河南交通职业技术学院2020年校级青年骨干教师培养计划项目。
关键词
再生塑料混凝土
ABS材料
抗氯离子渗透
力学性能
Recycled plastic concrete
ABS material
Resistance to chloride ion penetration
Mechanical properties
