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涂砂聚丙烯粗骨料混凝土与光圆钢筋之间的粘结-滑移关系

Bond-Slip Relationship between Sand-Coated Polypropylene Coarse Aggregate Concrete and Plain Rebar.

作者信息

Purnomo Heru, Chalid Mochamad, Pamudji Gandjar, Arrifian Taufiq Wildan

机构信息

Department of Civil Engineering, Universitas Indonesia, Depok 16424, Indonesia.

Department of Metallurgical and Materials, Universitas Indonesia, Depok 16424, Indonesia.

出版信息

Materials (Basel). 2022 Apr 3;15(7):2643. doi: 10.3390/ma15072643.

DOI:10.3390/ma15072643
PMID:35407975
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9000831/
Abstract

Recycled plastic waste as an aggregate in concrete mixtures is one of the important issues in the construction industry since it allows the reduction of building weight and has beneficial effects on the environment. In addition, the bonding ability of this kind of lightweight concrete to reinforcement is also a prerequisite as a composite material in forming reinforced concrete structures. Therefore, in this study, the bond of plain rebar embedded in artificial lightweight aggregate concrete made from polypropylene plastic waste coated with sand was investigated. A pull-out test of nine group specimens was conducted to study the bond strength of 10 mm, 12 mm, and 16 mm diameter plain rebar embedded in polypropylene plastic waste coarse aggregates lightweight concrete (PWCAC), failure mode, and bond stress-slip relationship. The test results show that the bond-slip relationship and bond strength depend mainly on the bar diameter for PWCAC. Meanwhile, for all PWCAC specimens tested, the pull-out failure modes were observed. A bond equation for PWCAC was formulated by performing a regression analysis on the experimental results and afterward was combined with an existing bond-slip equation for normal concrete to have the bond-slip formulation for the lightweight concrete studied. The comparison between the model and experimental results indicates a close agreement.

摘要

将回收塑料废料用作混凝土混合物中的骨料是建筑业的重要问题之一，因为它可以减轻建筑重量并对环境产生有益影响。此外，这种轻质混凝土与钢筋的粘结能力也是形成钢筋混凝土结构复合材料的先决条件。因此，在本研究中，对埋入由涂砂聚丙烯塑料废料制成的人工轻质骨料混凝土中的光圆钢筋的粘结性能进行了研究。进行了九组试件的拉拔试验，以研究直径为10mm、12mm和16mm的光圆钢筋埋入聚丙烯塑料废料粗骨料轻质混凝土（PWCAC）中的粘结强度、破坏模式以及粘结应力-滑移关系。试验结果表明，PWCAC的粘结-滑移关系和粘结强度主要取决于钢筋直径。同时，对于所有测试的PWCAC试件，均观察到拉拔破坏模式。通过对试验结果进行回归分析，建立了PWCAC的粘结方程，然后将其与普通混凝土现有的粘结-滑移方程相结合，得到了所研究轻质混凝土的粘结-滑移公式。模型与试验结果的比较表明二者吻合良好。

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Materials (Basel). 2021 Dec 27;15(1):175. doi: 10.3390/ma15010175.
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Engineering Performance of Concrete Incorporated with Recycled High-Density Polyethylene (HDPE)-A Systematic Review.掺再生高密度聚乙烯（HDPE）混凝土的工程性能——系统综述
Polymers (Basel). 2021 Jun 6;13(11):1885. doi: 10.3390/polym13111885.
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Sustainable Green Lightweight Concrete Containing Plastic-Based Green Lightweight Aggregate.
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Materials (Basel). 2021 Jun 15;14(12):3304. doi: 10.3390/ma14123304.
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Modeling Local Bond Stress-Slip Relationships of Reinforcing Bars Embedded in Concrete with Different Strengths.模拟埋置于不同强度混凝土中的钢筋的局部粘结应力-滑移关系
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Recycling of PET bottles as fine aggregate in concrete.将 PET 瓶回收为混凝土中的细骨料。
Waste Manag. 2010 Jun;30(6):1101-6. doi: 10.1016/j.wasman.2010.01.030. Epub 2010 Feb 21.