The Effect of Freeze-Thaw Cycles on the Mechanical Performance of RAC

被引：1

作者：

Rangel, C. S. ^{[1
]}

Amario, M. ^{[1
]}

Pepe, M. ^{[2
]}

Martinelli, E. ^{[2
]}

Toledo Filho, R. D. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Civil Engn Dept, COPPE, Rio De Janeiro, Brazil

[2] Univ Salerno, Dept Civil Engn, Salerno, Italy

来源：

PROCEEDINGS OF ITALIAN CONCRETE DAYS 2018 | 2020年 / 42卷

基金：

欧盟地平线“2020”;

关键词：

Recycled Concrete Aggregate; Recycled aggregate concrete; Freeze-thaw cycles; Durability; Compressive strength;

D O I：

10.1007/978-3-030-23748-6_23

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The recycling of Construction and Demolition Waste (CDW) to be used as aggregates for concrete is a potential alternative to minimize the environmental impact. In cold regions, the damage caused to concrete structures by freezing and thawing is a serious problem. This study presents the results of experimental tests aimed at investigating the influence of the use of Recycled Concrete Aggregate (RCA) on concrete submitted to 150 freeze-thaw cycles. Aggregates made from laboratory-produced concrete waste were used in two size fractions (i.e., Coarse 0-4.8 to 9.5 mm and Coarse 1-9.5 to 19 mm). Concrete mixtures of normal strength and high strength were produced with only natural aggregate and mixtures with 100% RCA in each of the size fractions. The mechanical behavior and physical properties were evaluated. The results showed that, for both natural and recycled concretes, the most affected class was the normal strength class.

引用

页码：301 / 311

页数：11

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