Ultra-high performance fibre-reinforced cementitious composite with steel microfibres functionalized with silane

被引：41

作者：

Casagrande, Cezar Augusto ^{[1
]}

Cavalaro, Sergio Henrique Pialarissi ^{[2
]}

Repette, Wellington Longuini ^{[1
]}

机构：

[1] Fed Univ Santa Catarina UFSC, Dept Civil Engn ECV, Joao Pio Duarte Silva S-N, BR-88040900 Florianopolis, SC, Brazil

[2] Loughborough Univ, Sch Architecture Bldg & Civil Engn, Loughborough LE11 3TU, Leics, England

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 178卷

关键词：

Silane; Fibre pullout; Functionalization; Interface adhesion; UHPFRC; MECHANICAL-PROPERTIES; FLEXURAL BEHAVIOR; SILICA FUME; GRAIN-SIZE; STRENGTH; CONCRETE; BOND; MICROSTRUCTURE; NANO-SIO2; HYDRATION;

D O I：

10.1016/j.conbuildmat.2018.05.167

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper explores the effect of fibre functionalization with tetraethoxysilane (TEOS) in the microstructure and mechanical property of ultra-high performance cement composites with steel fibres. Fibres treated with three concentrations of TEOS were evaluated by pullout tests and SEM/EDS analysis. Mixes with treated fibres showed up to 35.6% increase in bond strength and up to 49.5% reduction in the crack opening at the peak pullout load in comparison with reference mixes containing untreated fibres. The Si/Ca ratios in the fibre-matrix transition zone increases with the increment of the concentration of TEOS in the treatment of the fibre. This indicates an increase of C-S-H at the interface that justifies the enhanced mechanical performance. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：495 / 506

页数：12

共 56 条

[1]

AENOR, 2005, 1961 AENOR UNEEN, P35

[2] Monitoring of the mechanical behavior of concrete with chemically treated steel fibers by acoustic emission [J].

Aggelis, D. G. ;

Soulioti, D. V. ;

Gatselou, E. A. ;

Barkoula, N. -M. ;

Matikas, T. E. .

CONSTRUCTION AND BUILDING MATERIALS, 2013, 48 :1255-1260

[3]

Alwan J.M., 1991, Concrete Science and Engineering, V13, P247, DOI DOI 10.1016/0958-9465(91)90030-L

[4]

[Anonymous], RILEM FIB AFCC INT S

[5]

ASTM, 2013, ASTM C1437-Standard test method for flow of hydraulic cement mortar

[6]

Bache H.H, 1981, 2 INT C SUPERPLASTIC, P33

[7] Novel water-based nanosiloxane epoxy coating for corrosion protection of carbon steel [J].

Bagherzadeh, M. R. ;

Daneshvar, A. ;

Shariatpanahi, H. .

SURFACE & COATINGS TECHNOLOGY, 2012, 206 (8-9) :2057-2063

[8] Waste fibre-cement matrix bond characteristics improved by using silane-treated fibres [J].

Benzerzour, Mahfoud ;

Sebaibi, Nassim ;

Abriak, Nor Edine ;

Binetruy, Christophe .

CONSTRUCTION AND BUILDING MATERIALS, 2012, 37 :1-6

[9] FLEXURAL STRENGTH AND POROSITY OF CEMENTS [J].

BIRCHALL, JD ;

HOWARD, AJ ;

KENDALL, K .

NATURE, 1981, 289 (5796) :388-390

[10] HYDROLYSIS AND CONDENSATION OF SILICATES - EFFECTS ON STRUCTURE [J].

BRINKER, CJ .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 100 (1-3) :31-50

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