用再生砂浆集料制成的砌体砂浆的力学性能。

Mechanical Behavior of Masonry Mortars Made with Recycled Mortar Aggregate.

作者信息

Mora-Ortiz René Sebastián, Munguía-Balvanera Emmanuel, Díaz Sergio Alberto, Magaña-Hernández Francisco, Del Angel-Meraz Ebelia, Bolaina-Juárez Álvaro

机构信息

División Académica de Ingeniería y Arquitectura (DAIA-UJAT), Universidad Juárez Autónoma de Tabasco, Carretera Cunduacán-Jalpa de Méndez km. 1, Cunduacán, Tabasco CP 86690, Mexico.

出版信息

Materials (Basel). 2020 May 21;13(10):2373. doi: 10.3390/ma13102373.

DOI:10.3390/ma13102373

PMID:32455646

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7287965/

Abstract

Recycling is an important habit to avoid waste. This paper evaluates the performance of masonry mortar, elaborated by replacing natural sand with recycled fine aggregate (RFA) obtained from mortar. Five families of mixtures were prepared with different replacement proportions: 20%, 40%, 60%, and 100%. A 1:4 volumetric cement-to-aggregate ratio was used for all mixtures by experimentally adjusting the amount of water to achieve the same consistency of 175 ± 5 mm. The effects of the following procedures were analyzed: (1) the use of a deconstruction technique to collect the RFA, (2) pre-wetting of the aggregates, and (3) the use of a commercial plasticizer. Experimental results show that it is possible to use this type of recycled fine aggregate as a substitute for natural sand by up to 60% in the manufacture of masonry mortar without significantly affecting its properties.

摘要

回收利用是避免浪费的一项重要习惯。本文评估了用从砂浆中获得的再生细骨料（RFA）替代天然砂所制备的砌筑砂浆的性能。制备了五个系列不同替代比例（20%、40%、60%和100%）的混合物。通过实验调整水量，使所有混合物的水泥与骨料体积比为1:4，以达到175±5毫米的相同稠度。分析了以下步骤的效果：（1）使用解构技术收集RFA，（2）骨料预湿，（3）使用商用增塑剂。实验结果表明，在砌筑砂浆制造中，使用这种类型的再生细骨料替代天然砂的比例高达60%时，不会显著影响其性能。