Improvement of Engineering Properties of Recycled Aggregate Mortar by Amending Waste Rubber Particles

被引：0
|
作者：
Gong Y. [1 ]
Chen P. [1 ]
Zhang J. [1 ]
Zhan J. [2 ]
Xia P. [1 ]
Gao J. [1 ]
机构：
[1] School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou
[2] College of Foreign Languages and Literatures, Fudan University, Shanghai
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2021年 / 49卷 / 10期
关键词：
Apparent density; Durability; Mechanical property; Recycled aggregate mortar; Recycled brick-concrete aggregate; Waste rubber particles; Workability;
D O I：
10.14062/j.issn.0454-5648.20210043
中图分类号：
学科分类号：
摘要：
Application of recycled aggregate becomes popular due to the shortage of natural sand and gravel. To improve the technical defects of recycled aggregate mortar, waste rubber particles were used to partially substitute for recycled brick-concrete fine aggregate. The influence of waste rubber particles content on the engineering properties of recycled aggregate mortar at different water-cement ratios was investigated. The consistency, water retentivity and apparent density of the mortar mixture were examined, and the mechanical properties, shrinkage, permeability and frost resistance of the mortar specimens were tested. The results show that the fluidity of the recycled aggregate mortar mixture increases, and the water retentivity decreases as the content of waste rubber particles increases. When the content of waste rubber particles is less than 10%, little decrease in water retentivity appears, while the improvement in fluidity is obvious. The rubber particles with contents of 3%-7% are able to improve the skeleton effect of the aggregate, hence increasing both the flexural and compressive strengths for the mortar specimens. This could be attributed to the elastic deformation of the rubber particles that reduces the stress concentration. When the contents of rubber particles are 3%-7%, the shrinkage resistance, anti-seepage property and frost resistance of the mortar specimens enhance, and these properties increase with increasing the content of waste rubber particles. The amendment of wastes rubber particles has a positive effect on the engineering properties of recycled aggregate mortar. © 2021, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
引用
下载
收藏
页码：2305 / 2312
页数：7
相关论文
共 23 条
  • [1] DUAN H B, LI J H., Construction and demolition waste management: China's lessons, Waste Manag Res, 34, 5, pp. 397-398, (2016)
  • [2] TORKITTIKUL P, CHAIPANICH A., Utilization of ceramic waste as fine aggregate within Portland cement and fly ash concretes, Cem Concr Compos, 32, 6, pp. 440-449, (2010)
  • [3] CORINALDESI V., Mechanical behavior of masonry assemblages manufactured with recycled-aggregate mortars, Cem Concr Compos, 31, 7, pp. 505-510, (2009)
  • [4] LEE S T., Influence of recycled fine aggregates on the resistance of mortars to magnesium sulfate attack, Waste Manag, 29, 8, pp. 2385-2391, (2009)
  • [5] DAPENA E, ALAEJOS P, LOBET A, Et al., Effect of Recycled Sand Content on Characteristics of Mortars and Concretes, J Mater Civ Eng, 23, 4, pp. 414-422, (2011)
  • [6] CUENCA-MOYANO G M, MARTIN-MORALES M, VALVERDE-PALACIOS I, Et al., Influence of pre-soaked recycled fine aggregate on the properties of masonry mortar, Constr Build Mater, 70, pp. 71-79, (2014)
  • [7] KATZ A, KULISCH D., Performance of mortars containing recycled fine aggregate from construction and demolition waste, Mater Struct, 50, 4, pp. 1-16, (2017)
  • [8] TOPCU I B, BILIR R., Experimental investigation of drying shrinkage cracking of composite mortars incorporating crushed tile fine aggregate, Mater Design, 31, 9, pp. 4088-4097, (2010)
  • [9] LEDESMA E F, JIMENEZ J R, FERNANDEZ J M, Et al., Properties of masonry mortars manufactured with fine recycled concrete aggregates, Constr Build Mater, 71, pp. 289-298, (2014)
  • [10] SUN Jiaying, GENG Jian, J Build Mater, 15, 3, pp. 382-385, (2012)
123