Mechanical performance of asphalt concrete modified with nanoparticles: Nanosilica, zero-valent iron and nanoclay

被引：64
作者：
Lopes Crucho, Joao Miguel [1 ]
Coelho das Neves, Jose Manuel [1 ]
Capitao, Silvino Dias [1 ,2 ]
de Picado-Santos, Luis Guilherme [1 ]
机构：
[1] Univ Lisbon, Inst Super Tecn, CERIS, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
[2] Inst Super Engn Coimbra, Inst Politecn Coimbra, Rua Pedro Nunes, P-3030199 Coimbra, Portugal
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 181卷
关键词：
Asphalt mixtures; Bentonite nanoclay; Mechanical performance; Water sensitivity; Zero-valent iron; Nanosilica; RHEOLOGICAL PROPERTIES; BINDER; MIXTURES; NANOCOMPOSITES; NANOTECHNOLOGY; ADDITIVES; FATIGUE; POLYMER;
D O I：
10.1016/j.conbuildmat.2018.06.052
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The objective of this study is to evaluate the effects of nanomodifications in the asphalt mixture performance. Three types of nanoparticles were used: silica, zero-valent iron and bentonite. The correspondent mixtures were tested for stiffness, fatigue, permanent deformation and water sensitivity. The results showed that nanomodifications lead to improvements in the performance. (1) nanosilica improved stiffness and permanent deformation; (2) zero-valent iron presented better water sensitivity; (3) and bentonite improved fatigue life and elastic behavior. An analysis of the nanomodifications based on all the mechanical performance indicators was performed and revealed that the silica modification achieved the best global performance. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：309 / 318
页数：10
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