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Lightweight Dense Polymer Concrete Exposed to Chemical Condition and Various Temperatures: An Experimental Investigation
Journal of Building Engineering ( IF 6.4 ) Pub Date : 2020-10-10 , DOI: 10.1016/j.jobe.2020.101878
Hossein Sanaei Ataabadi , Abdolreza Zare , Hamid Rahmani , Arash Sedaghatdoost , Emad Mirzaei

Throughout the last years, Polymer concrete (PC) has been using to enhance the performance of concrete structures. Manufacturing lightweight construction material aims to reduce the weight of structures and utilize lightweight polymer concrete (LPC) to combine with ordinary cement concrete (OCC). The purpose of this paper is to determine the mechanical and durability properties of LPC using destructive and non-destructive test methods. The mixtures were prepared with five polyester resin ratios (15%, 18%, 21%, 24%, and 27%) and two types of aggregates, lightweight expanded clay aggregate (LECA) and natural river sand. Specimens were investigated under compression, flexural and tensile tests after 1, 7 and 28 days of curing for mechanical tests. Water absorption, chemical resistance and heating test at 23ᵒC, 100ᵒC, 150ᵒC, 200ᵒC, 250ᵒC, 300ᵒC, and 400ᵒC was used for assessing the durability of LPC. Outcomes were compared to the OCC in similar condition. Results demonstrate that an increase in the polymer ratio led to improve the strength in compression, flexural, and tensile, which is attributed to coat all aggregates and fill the pores. Despite increases in the polymer content, excess resin ratio (27%), has no significant influence on the properties of LPC. As for durability tests, LPC represents an excellent behavior against the chemical situation, while by raising the temperature, an intense reduction in the PCs properties is observed. Finally, the most favorable mix proportion that provides higher performance is obtained for polymer content of 24%.



中文翻译:

化学条件和不同温度下的轻质致密聚合物混凝土的实验研究

在过去的几年中,聚合物混凝土(PC)一直用于增强混凝土结构的性能。制造轻质建筑材料的目的是减轻结构的重量,并利用轻质聚合物混凝土(LPC)与普通水泥混凝土(OCC)结合。本文的目的是使用破坏性和非破坏性测试方法确定LPC的机械性能和耐久性。用五种聚酯树脂比例(15%,18%,21%,24%和27%)和两种类型的骨料(轻质膨胀粘土骨料(LECA)和天然河砂)制备混合物。固化1、7和28天后,在压缩,弯曲和拉伸测试下对样品进行了机械测试。在23°C,100°C,150°C,200°C,250°C,300°C,400℃用于评估LPC的耐久性。将结果与OCC在类似情况下进行比较。结果表明,聚合物比率的增加导致压缩,弯曲和拉伸强度的提高,这归因于涂覆所有聚集体并填充孔。尽管增加了聚合物含量,但是过量的树脂比例(27%)对LPC的性能没有显着影响。至于耐久性测试,LPC在化学条件下表现出优异的性能,而通过升高温度,可以观察到PC性能的大幅降低。最后,对于24%的聚合物含量,获得了提供更高性能的最有利的混合比例。结果表明,聚合物比率的增加导致压缩,弯曲和拉伸强度的提高,这归因于涂覆所有聚集体并填充孔。尽管增加了聚合物含量,但是过量的树脂比例(27%)对LPC的性能没有显着影响。至于耐久性测试,LPC在化学条件下表现出优异的性能,而通过升高温度,可以观察到PC性能的大幅降低。最后,对于24%的聚合物含量,获得了提供更高性能的最有利的混合比例。结果表明,聚合物比率的增加导致压缩,弯曲和拉伸强度的提高,这归因于涂覆所有聚集体并填充孔。尽管增加了聚合物含量,但是过量的树脂比例(27%)对LPC的性能没有显着影响。至于耐久性测试,LPC在化学条件下表现出优异的性能,而通过升高温度,可以观察到PC性能的大幅降低。最后,对于24%的聚合物含量,获得了提供更高性能的最有利的混合比例。对LPC的性能没有重大影响。至于耐久性测试,LPC在化学条件下表现出优异的性能,而通过升高温度,可以观察到PC性能的大幅降低。最后,对于24%的聚合物含量,获得了提供更高性能的最有利的混合比例。对LPC的性能没有重大影响。至于耐久性测试,LPC在化学条件下表现出优异的性能,而通过升高温度,可以观察到PC性能的大幅降低。最后,对于24%的聚合物含量,获得了提供更高性能的最有利的混合比例。

更新日期:2020-10-11
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