Microstructural analyses of the addition of PP fibres on the fracture properties of high-strength self-compacting concrete by X-ray computed tomography

被引：18

作者：

Rios, Jose D. ^{[1
]}

Minguez, Jesus ^{[2
]}

Martinez-De La Concha, Antonio ^{[1
]}

Angel Vicente, Miguel ^{[2
]}

Cifuentes, Hector ^{[1
]}

机构：

[1] Univ Seville, ETS Ingn, Seville, Spain

[2] Univ Burgos, Dept Civil Engn, Burgos, Spain

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2020年 / 261卷

关键词：

High-strength concrete; Polypropylene; Fracture mechanic; X-ray computed tomography; Microstructure; 3-POINT BEND TESTS; INTERFACIAL TRANSITION ZONE; HIGH-PERFORMANCE CONCRETE; RICE HUSK ASH; MECHANICAL-PROPERTIES; REINFORCED CONCRETE; STEEL FIBER; POLYPROPYLENE FIBERS; SHRINKAGE CRACKING; POROSITY;

D O I：

10.1016/j.conbuildmat.2020.120499

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper analyses the influence of the presence of polypropylene fibres in the microstructure of a high-strength self-compacting concrete by X-ray computed tomography and its consequences on the mechanical and fracture properties. The addition of PP fibres alters the pore structure of the concrete matrix, and this affects the macroscopic response (i.e., mechanical and fracture behaviour). A microstructural analysis of an unreinforced concrete, used as reference mix, and two polypropylene fibre-reinforced mixes with two fibre length (6 and 24 mm) were experimentally carried out. Complementary, a comprehensive experimental study of the mechanical and fracture properties of each concrete were performed. Finally, it was established a correlation between the microscopic response (pore morphology and pore distribution) and the macroscopic behaviour of high-strength self-compacting concrete. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：11

共 65 条

[1] Durability studies on fibre reinforced self compacting concrete with sustainable wastes
Aarthi, K.
Arunachalam, K.
[J]. JOURNAL OF CLEANER PRODUCTION, 2018, 174 : 247 - 255
[2] A method for constructing the bilinear tension softening diagram of concrete corresponding to its true fracture energy
Abdalla, HM
Karihaloo, BL
[J]. MAGAZINE OF CONCRETE RESEARCH, 2004, 56 (10) : 597 - 604
[3] *AENOR, 2014, EN12390132014 AENOR
[4] Rheological and mechanical properties of self-compacting concrete with glass and polyvinyl alcohol fibres
Ahmad, Subhan
Umar, Arshad
[J]. JOURNAL OF BUILDING ENGINEERING, 2018, 17 : 65 - 74
[5] Al Qadi A. N. S., 2014, J. King Saud Univ. Eng. Sci, V26, P33, DOI [10.1016/j.jksues.2012.12.002, DOI 10.1016/J.JKSUES.2012.12.002]
[6] Flexural Fatigue Behavior of a Self-Compacting Ultrahigh Performance Fiber-Reinforced Concrete
Al-Azzawi, B. S.
Karihaloo, B. L.
[J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2017, 29 (11)
[7] On the mechanical properties and fracture behavior of polyolefin fiber-reinforced self-compacting concrete
Alberti, M. G.
Enfedaque, A.
Galvez, J. C.
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2014, 55 : 274 - 288
[8] Effectiveness of fly ash on the restrained shrinkage cracking resistance of self-compacting concrete
Altoubat, Salah
Junaid, M. Talha
Leblouba, Moussa
Badran, Deena
[J]. CEMENT & CONCRETE COMPOSITES, 2017, 79 : 9 - 20
[9] Influence of mix composition and strength on the fracture properties of self-compacting concrete
Alyhya, W. S.
Dhaheer, M. S. Abo
Al-Rubaye, M. M.
Karihaloo, B. L.
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2016, 110 : 312 - 322
[10] [Anonymous], 2005, European Guideline for Self Compacting Concrete, P63

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