Effect of adding different contents of waste plastic particles on mechanical properties of concrete

doi:10.19491/j.issn.1001-9278.2025.07.019

Abstract

Abstract:

This study investigated the effects of recycled polyvinyl chloride （RPVC） particles on concrete properties by replacing 20 %~50 % of natural sand with RPVC aggregate. Specimens were subjected to six distinct humidity⁃controlled curing environments to evaluate the combined influence of RPVC dosage and curing conditions on mechanical performance. Results indicated that RPVC incorporation reduced concrete's compressive strength， with maximum reduction （50 % replacement） observed under continuous indoor curing. Both 28 day splitting tensile strength and elastic modulus consistently decreased with increasing RPVC content， showing similar curing⁃condition dependence as compressive strength. An empirical formula was derived to estimate the elastic modulus of RPVC⁃modified concrete. The enhanced deformation resistance is attributed to RPVC particles' high tensile strength， superior elastic deformation capacity， and confining pressure effect from lateral expansion. These findings provide fundamental insights for optimizing RPVC⁃recycled concrete in sustainable construction applications.

Key words: recycled polyvinyl chloride aggregate, concrete, plastic particle dosage, maintenance conditions, mechanical property

CLC Number:

TQ325.3

WANG Zheng, XIAO Dong, HUANG Rui, SUN Xiaoqian. Effect of adding different contents of waste plastic particles on mechanical properties of concrete[J]. China Plastics, 2025, 39(7): 130-134.

Figures/Tables 8

SiO₂含量	Al₂O₃含量	Fe₂O₃含量	CaO含量	MgO含量	SO₃含量	K₂O含量	Na₂O含量
21.46	5.54	3.47	63.95	1.86	1.46	0.54	0.26

Tab.1. Chemical composition of portland cement

Fig.1. Grading curves of RPVC and natural aggregates

Fig.2. Distribution diagram of compressive strength of PPVC concrete under different curing conditions

养护方案及编号	养护总时间/d
养护方案及编号	模具成型	水养护	室内养护	室外养护
连续水养护（CWC）	1	直至试验龄期	0	0
连续室内养护（CRC）	1	0	直至试验龄期	0
连续室外养护（OEC）	1	0	0	直至试验龄期
组合养护⁃3 （IWC3）	1	3	直至试验龄期	0
组合养护⁃7 （IWC7）	1	7	直至试验龄期	0
组合养护⁃14 （IWC14）	1	14	直至试验龄期	0

Tab.2. Concrete specific curing scheme

Fig.3. Column distribution diagram of 28 day splitting tensile strength of concrete under different curing conditions

Fig.4. 28 day elastic modulus variation curve of concrete under different curing conditions

Fig.5. The correlation between elastic modulus and compressive strength of concrete

Fig.6. Schematic diagram of failure of PVC particle concrete specimens

References 19

[1]	胡延庆，胡凡，周剑池，等.废弃塑料回收与转化的研究进展［J］.中国塑料，2024，38（4）：79⁃87.
	HU Y Q， HU F， ZHOU J C， et al. Research progress on recycling and transformation of waste plastics ［J］. China Plastics， 2019，38（4）：79⁃87.
[2]	卢小玉，仝佩，周凯.不同养护制度下掺废弃塑料对混凝土的影响研究［J］.水电能源科学，2024，42（5）：101⁃104+62.
	LU X Y， QUAN P， ZHOU K. Study on the effect of mixed waste plastics on concrete under different curing systems ［J］. Journal of Hydropower and Energy， 2019，42（5）：101⁃104+62.
[3]	孙一李全，赵羽习，孟涛，等.再生砖混骨料混凝土柱的小偏心受压性能［J］.浙江大学学报（工学版），2021，55（6）：1 090⁃1 099.
	SUN Y L Q， ZHAO Y X， MENG T， et al. Small eccentric compression performance of recycled brick⁃concrete columns ［J］. Journal of Zhejiang University （Engineering and Technology），2021，55（6）：1 090⁃1 099.
[4]	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 Manage，2009（29）：621⁃628.
[5]	柴松华，杜红秀，吴凯，等.玄武岩纤维增强聚合物筋混凝土循环拉拔试验及预测模型［J］.中国塑料，2024，38（4）：47⁃53.
	CHAI S H， DU H X， WU K， et al. Cyclic drawing test and prediction model of basalt fiber reinforced polymer reinforced concrete ［J］. China Plastics， 2019，38（4）：47⁃53.
[6]	闫思璐，刘鸿源，黄锐.基于三点弯曲试验的聚丙烯塑料颗粒混凝土声发射分析［J］.应用声学，2024，43（3）：635⁃640.
	YAN S L， LIU H Y， HUANG R. Acoustic emission analysis of polypropylene plastic granular concrete based on three⁃point bending test ［J］. Journal of Applied Acoustics， 2019，43（3）：635⁃640.
[7]	冯春花，黄益宏，崔卜文，等.建筑再生骨料强化方法研究进展［J］.材料导报，2022，36（21）：88⁃95.
	FENG C H， HUANG Y H， CUI B W， et al. Research progress on strengthening methods of recycled building aggregate ［J］. Materials Review，2022，36（21）：88⁃95.
[8]	孙小东，曹鼎，胡倩倩，等.废弃塑料的化学回收资源化利用研究进展［J］.中国塑料，2021，35（8）：44⁃54.
	SUN X D， CAO D， HU Q Q， et al. Research progress of chemical recycling and resource utilization of waste plastics ［J］. China Plastics， 2019，35（8）：44⁃54.
[9]	关杰，张韬，苏瑞景，等.废弃PVC辅助氯化焙烧高效回收废旧锂离子电池正极材料［J］.环境工程，2021，39（6）：122⁃127+136.
	GUAN J， ZHANG T， SU R J， et al. High efficiency recovery of cathode materials from waste lithium⁃ion batteries by chlorination calcination of waste PVC［J］. Environmental Engineering， 2019，39（6）：122⁃127+136.
[10]	Senhadji Y， Escadeillas G， Benosman A S， et al. Effect of incorporating PVC waste as aggregate on the physical， mechanical， and chloride ion penetration behavior of concrete［J］. Journal of Adhesion Science and Technology， 2015（29）： 625⁃640.
[11]	汪洋，李华，王育江，等.不同养护条件对混凝土长期收缩变形性能的影响［J］.混凝土，2023（10）：21⁃24+31.
	WANG Y， LI H WANG Y J， et al. Effects of different curing conditions on long⁃term shrinkage and deformation properties of concrete ［J］. Concrete，2023（10）：21⁃24+31.
[12]	Gayarre F L， Perez C L C， M A S， et al. The effect of curing conditions on the compressive strength of recycled aggregate concrete［J］. Construction and Building Materials， 2014 （53）： 260⁃266.
[13]	KOU S C， POON C S， CHAN D， et al. Properties of steam cured recycled aggregate fly ash concrete［J］. Proceeding of the International RILEM Conference on the Use of Recycled Materials in Building and Structures. Barcelona， 2006（2）：590⁃599.
[14]	Buyle⁃Bodin F， Hadjieva⁃Zaharieva R. Influence of industrially produced recycled aggregates on flow properties of concrete［J］. Material Structure， 2002 （35）：504⁃509.
[15]	Ferreira L， Brito J D， Saikia N. Influence of curing conditions on the mechanical performance of concrete containing recycled plastic aggregate［J］. Construction and Building Materials， 2012（36）：196⁃204.
[16]	Fonseca N， Brito J D， Evangelista L. The influence of curing conditions on the mechanical performance of concrete made with recycled concrete waste［J］. Cement and Concrete Research， 2011 （33）：637⁃643.
[17]	刘清，韩风霞，于广明，等.再生粗骨料自密实混凝土基本力学性能［J］.建筑材料学报，2020，23（5）：1 053⁃1 060.
	LIU Q， HAN F X， YU G M， et al. Basic mechanical properties of self⁃compacting concrete with recycled coarse aggregate ［J］. Journal of Building Materials，20，23（5）：1 053⁃1 060.
[18]	张文华，张仔祥，刘鹏宇，等.多尺度纤维增强超高性能混凝土的轴心抗拉和抗压行为［J］.硅酸盐学报，2020，48（8）：1 155⁃1 167.
	ZHANG W H， ZHANG Z X， LIU P Y， et al. Axial tensile and compressive behavior of multi⁃scale fiber reinforced ultra⁃high performance concrete ［J］. Journal of the Chinese Society of Ceramics， 2019，48（8）：1 155⁃1 167.
[19]	黄炜，葛培，李萌，等.混杂纤维再生砖骨料混凝土正交试验及卷积神经网络预测分析［J］.材料导报，2021，35（19）：19 022⁃19 029.
	HUANG W， GE P， LI M， et al. Orthogonal test and convolutional neural network prediction analysis of hybrid fiber recycled brick aggregate concrete ［J］. Materials Review， 2019，35（19）：19 022⁃19 029.