Assessment of reclaimed asphalt pavement (RAP) as recycled aggregate for concrete

被引：15

作者：

Masi, Giulia ^{[1
]}

Michelacci, Alessandra ^{[1
]}

Manzi, Stefania ^{[1
]}

Bignozzi, Maria Chiara ^{[1
]}

机构：

[1] Univ Bologna, Dept Civil Chem Environm & Mat Engn DICAM, Via Terracini 28, I-40131 Bologna, Italy

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 341卷

关键词：

Reclaimed asphalt pavement; RAP; Recycled aggregate; Concrete aggregate; Microstructure; Durability; PORTLAND-CEMENT CONCRETE; PORE STRUCTURE; MERCURY POROSIMETRY; PERFORMANCE; DURABILITY; STRENGTH; BEHAVIOR; MORTAR;

D O I：

10.1016/j.conbuildmat.2022.127745

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A study about the performances of reclaimed asphalt pavement (RAP) sourced from 5 different Italian collection sites is presented to evaluate RAP as aggregate for concrete. Several RAP properties were investigated: physical properties (particles size distribution, water absorption, porosity, wettability), microstructure by microscopy, dimensional stability (drying shrinkage of mortar and concrete with 100% of RAP as aggregates) and durability assessment by freezing-thawing cycles. Several differences between RAP and natural aggregates used for concrete were highlighted. The use of RAP as recycled aggregate for concrete is a promising route, but a complete characterization is needed to ensure concrete performance and durability.

引用

页数：9

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