再生砖石骨料混凝土耐久性的改善

Improvement of the Durability of Recycled Masonry Aggregate Concrete.

作者信息

Pavlů Tereza, Fořtová Kristina, Řepka Jakub, Mariaková Diana, Pazderka Jiří

机构信息

Department of Building Structures, Faculty of Civil Engineering of Technical University in Prague, Thakurova 7, 160 00 Prague, Czech Republic.

Research Team Architecture and the Environment, University Centre for Energy Efficient Buildings of Technical University in Prague, Trinecka 1024, 273 43 Bustehrad, Czech Republic.

出版信息

Materials (Basel). 2020 Dec 1;13(23):5486. doi: 10.3390/ma13235486.

DOI:10.3390/ma13235486

PMID:33272000

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7730824/

Abstract

The use of recycled masonry aggregate for concrete is mostly limited by the worse properties in comparison with natural aggregate. For these reasons it is necessary to find ways to improve the quality of recycled masonry aggregate concrete and make it more durable. One possibility is utilization of crystalline admixture which was verified in this study by laboratory measurements of key material properties and durability. The positive influence of mineral admixture was proved for freeze-thaw resistance. The positive impact to carbonation resistance was not unambiguous. In conclusion, the laboratory evaluation shows how to improve the durability of recycled masonry aggregate concrete, however, it is necessary to investigate more about this topic.

摘要

与天然骨料相比，再生砖石骨料用于混凝土时大多受到性能较差的限制。基于这些原因，有必要找到提高再生砖石骨料混凝土质量并使其更耐用的方法。一种可能性是利用结晶外加剂，本研究通过对关键材料性能和耐久性的实验室测量对其进行了验证。矿物外加剂对抗冻融性有积极影响。对抗碳化性的积极影响并不明确。总之，实验室评估表明了如何提高再生砖石骨料混凝土的耐久性，然而，有必要对此主题进行更多研究。