4.6 Article

Mechanical Properties, Dry Shrinkage, and Water Penetration of Reusing Fine and Ultrafine Recycled Concrete Aggregate

期刊

MATERIALS
卷 15, 期 24, 页码 -

出版社

MDPI
DOI: 10.3390/ma15248947

关键词

road construction; recycled concrete aggregate; mechanical preparties; shrinkage; water penetration

向作者/读者索取更多资源

This study investigates the properties of fine and ultrafine recycled concrete aggregate (RCA) and their influence on the long-term performance of the designed matrix. The results show that increasing ultrafine RCA content can improve compressive strength and resistance to water penetration, but it also increases drying shrinkage. These findings contribute to the understanding of the utilization of ultrafine RCA in road construction.
The effect of fine and ultrafine recycled concrete aggregate (RCA) on road construction still lacks investigation. This study investigates the properties of fine and ultrafine RCA, further, the influence of the different proportions of ultrafine RCA on the long-term performance of the designed matrix. The fine and ultrafine RCA are thoroughly characterized. Simultaneously, the mechanical properties, shrinkage properties, and water penetration of the designed matrix are evaluated. The results indicate that RCA shows low density, high porosity, and high water absorption. Furthermore, elevated ultrafine RCA contents result in higher compressive strength of up to 43.14% at 90 days and higher resistance of water penetration of up to 50% at 28 days due to the refined microstructure. However, higher drying shrinkage is observed with higher ultrafine RCA, which is associated with the high water absorption of the ultrafine RCA. The understanding of the utilization of ultrafine RCA in the construction of road base courses has been explored.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据