Effect of a crystalline admixture on the self-healing capability of high-performance fiber reinforced concretes in service conditions

被引：78
作者：
Escoffres, P. [1 ]
Desmettre, C. [1 ]
Charron, J. -P. [1 ]
机构：
[1] Polytech Montreal, Dept Civil Geol & Min Engn, POB 6079,Stn Ctr Ville, Montreal, PQ H3C 3A7, Canada
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 173卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Self-healing; Crystalline admixture; Fiber reinforcement; Crack openings; Water permeability; Mechanical recovery; SEM observations; Calcite; Aragonite; WATER PERMEABILITY; CRACKED CONCRETE; CEMENTITIOUS COMPOSITES; FLY-ASH; BEHAVIOR; LOAD;
D O I：
10.1016/j.conbuildmat.2018.04.003
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In presence of water, cracks of reinforced concrete structures can heal naturally or with the help of admixtures. The project aimed to measure the water permeability and self-healing of a high-performance concrete (HPC), a HPC with fibers (HPFRC) and a HPC with fibers and crystalline admixture (HPFRC-CA). Under monotonic loading, HPFRC and HPFRC-CA showed maximal crack widths 39% lower and water permeability 3.1 times inferior than HPC. Under a 7-day constant loading and a continuous water flow, cracks of HPFRC and HPFRC-CA were completely healed in comparison to 60% for those of the HPC. The self-healing kinetics was slower for the HPFRC-CA than for the HPFRC, but a higher load had to be applied in the HPFRC-CA to reach again the initial permeability. SEM observations of self healed products allowed identification of calcite and ettringite in the HPFRC in comparison to aragonite in the HPFRC-CA. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：763 / 774
页数：12
相关论文
共 52 条
[11]  
Beaurivage F., 2009, ETUDE INFLUENCE PARA
[12]   CORROSION OF STEEL IN CONCRETE - UNDERSTANDING, INVESTIGATION AND REPAIR 2ND EDITION [J].
Claisse, Peter .
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-CONSTRUCTION MATERIALS, 2008, 161 (03) :135-135
[13]   Water permeability of reinforced concrete with and without fiber subjected to static and constant tensile loading [J].
Desmettre, C. ;
Charron, J. -P. .
CEMENT AND CONCRETE RESEARCH, 2012, 42 (07) :945-952
[14]   Novel water permeability device for reinforced concrete under load [J].
Desmettre, C. ;
Charron, J. -P. .
MATERIALS AND STRUCTURES, 2011, 44 (09) :1713-1723
[15]   On the use of crystalline admixtures in cement based construction materials: from porosity reducers to promoters of self healing [J].
Ferrara, Liberato ;
Krelani, Visar ;
Moretti, Fabio .
SMART MATERIALS AND STRUCTURES, 2016, 25 (08)
[16]   A "fracture testing" based approach to assess crack healing of concrete with and without crystalline admixtures [J].
Ferrara, Liberato ;
Krelani, Visar ;
Carsana, Maddalena .
CONSTRUCTION AND BUILDING MATERIALS, 2014, 68 :535-551
[17]  
Fischer G, 2002, ACI STRUCT J, V99, P104
[18]   Studies of the growth and dissolution kinetics of the CaCO3 polymorphs calcite and aragonite .1. Growth and dissolution rates in water [J].
Gutjahr, A ;
Dabringhaus, H ;
Lacmann, R .
JOURNAL OF CRYSTAL GROWTH, 1996, 158 (03) :296-309
[19]   Effect of different types of fibers on the microstructure and the mechanical behavior of Ultra-High Performance Fiber-Reinforced Concretes [J].
Hannawi, Kinda ;
Bian, Hui ;
Prince-Agbodjan, William ;
Raghavan, Balaji .
COMPOSITES PART B-ENGINEERING, 2016, 86 :214-220
[20]  
Hearn N, 1999, ACI MATER J, V96, P234
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