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

被引：17
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
收藏
页数：9
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