改性再生塑胶颗粒对陶粒混凝土力学性能的影响研究
Effect of modified recycled plastic particles on mechanical properties of ceramsite concrete
关键词:
ABS/PC塑胶颗粒;取代率;硅烷偶联剂;力学性能
Key words:
ABS/PC plastic particle; Replacement rate; Silane coupling agent; Mechanical property
刊期:
2023年第7期
DOI:
10.19761/j.1000-4637.2023.07.066.05
文章编号:
基金项目:
吉林省教育厅科研项目(JJKH20210301KJ)。
作者:
温永钦,姜婷婷,卢金山,王禄彤
单位:
吉林建筑大学 土木工程学院,吉林 长春 130118
摘要
摘 要:通过立方体抗压、劈裂抗拉和抗折试验,研究了未改性和改性再生热可塑性塑胶颗粒(ABS/PC塑胶颗粒)等体积取代河砂(取代率为0%、3%、5%、8%、10%、13%)和塑料颗粒改性剂(硅烷偶联剂)对陶粒混凝土力学性能的影响。结果表明:随着再生热可塑性塑胶颗粒取代率的增大,陶粒混凝土的干表观密度呈降低趋势,抗压、抗折、劈裂抗拉强度均呈先增大后减小的趋势,当取代率为8%时,各项强度指标最优;硅烷偶联剂的加入对再生热可塑性塑胶颗粒陶粒混凝土的力学性能提升效果显著。
Abstract: The effects of the replacement rates of unmodified and modified recycled ABS/PC plastic particles(0, 3%, 5%, 8%, 10%, 13%) and the plastic particle modifier (silane coupling agent) on the mechanical properties of ceramsite concrete were studied through the tests of cube compression, splitting tensile and flexural resistance. The results show that with the increase of the replacement rate of recycled ABS/PC plastic particles, the dry apparent density of ceramsite concrete decreases, and the compressive strength, flexural strength and tensile strength all increase first and then decrease. When the replacement rate is 8%, all strength indexes are optimal. The addition of silane coupling agent can significantly improve the mechanical properties of ceramsite concrete mixed with recycled ABS/PC plastic particles.
结论
(1)随着ABS/PC塑胶颗粒取代率的增加,掺未改性的再生ABS/PC塑胶颗粒陶粒混凝土的干表观密度逐渐降低,其7 d、28 d抗压强度、劈裂抗拉强度、抗折强度呈现先增加后降低的趋势,当取代率为8%时,力学性能达到最优。
(2)改性再生ABS/PC塑胶颗粒对提高陶粒混凝土的7 d、28 d立方体抗压强度、劈裂抗拉强度、抗折强度、拉压比具有明显作用。
(3)硅烷偶联剂可以提高再生ABS/PC塑胶颗粒与胶凝材料界面的相容性,减少界面裂隙与孔洞,从而提高再生ABS/PC塑胶颗粒陶粒混凝土的力学性能。
参考文献
[1] 杜雨潇.基于循环经济的废旧塑料制品材料的再生利用[J].合成材料老化与应用,2021,50(6):147-149.
[2] 张海波,尚海涛,李启强,等.废旧塑料改性砂浆力学性能研究[J].河南理工大学学报(自然科学版),2014,33(2):238-241.
[3] KOU S C,LEE G,POON C S,et al.Properties of lightweight aggregate concrete prepared with PVC granules derived from scraped PVC pipes [J].Waste Management,2009,29(2):621-628.
[4] FRAJ A B,KISMI M,MOUNANGA P.Valorization of coarse rigid polyurethane foam waste in lightweight aggregate concrete [J].Construction and Building Materials,2010,24(6):1069-1077.
[5] AKCAOZOGLU S,ATIS C D,AKCAOZOGLU K.An investigation on the use of shredded PET waste bottles as aggregate in lightweight concrete [J].Waste Management,2010, 30(2):285-290.
[6] MARZOUK O,DHEILY R,QUENEUDEC M.Valorization of post-consumer waste plastic in cementitious concrete composites[J].Waste Management,2007,27(2):310-318.
[7] 杨树桐,孙泽田.掺废弃塑料颗粒混凝土力学和弯曲变形性能[J].建筑材料学报,2015,18(1):123-127.
[8] 冯兵辰.废旧塑料颗粒水泥混凝土力学性能研究[J].交通标准化,2012(2):72-74.
[9] 王磊,何晔,张小月.硅烷偶联剂改性再生塑料混凝土的力学性能[J].兰州理工大学学报,2014,40(6):136-139.
[10] 王磊,何晔,朱生晖.硅烷偶联剂浓度对再生塑料混凝土力学性能影响[J].硅酸盐通报,2015,34(2):335-339.
[11] 李启强,张海波,李明远,等.废旧聚苯颗粒改性水泥砂浆力学性能研究[J].混凝土与水泥制品,2014(3):76-78.
[12] 杨春景,张营营.废旧塑料改性轻骨料混凝土力学性能及疲劳性能研究[J].中外公路,2016,36(5):254-257.
[13] 孙振华,蒋丽君,张海洋.SCA对再生混凝土中ABS材料的界面相容性改善研究[J].塑料科技,2021,49(5):53-56.
[14] 董素芬,姜丽,田元艳.硅烷偶联剂对橡胶集料水泥砂浆力学性能的影响[J].混凝土与水泥制品,2012(5):20-23.
[15] 王书刚.再生聚氯乙烯混凝土的力学性能及其应用研究[D].镇江:江苏科技大学,2021.
引用本文
温永钦,姜婷婷,卢金山,改性再生塑胶颗粒对陶粒混凝土力学性能的影响研究[J].混凝土与水泥制品,2023(7):66-69,74.
WEN Y Q,JIANG T T,LU J S,et al.Effect of modified recycled plastic particles on mechanical properties of ceramsite concrete[J].China Concrete and Cement Products,2023(7):66-69,74.
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