Contribution to the modeling of hydration and chemical shrinkage of slag-blended cement at early age

被引：63

作者：

Merzouki, Tarek ^{[1
]}

Bouasker, Marwen ^{[2
]}

Khalifa, Nour El Houda ^{[3
]}

Mounanga, Pierre ^{[4
]}

机构：

[1] Univ Orleans, PRISME EA4229, F-45072 Orleans, France

[2] Univ Orleans, Res Ctr Divided Matter CRMD, FRE CNRS 3520, F-45100 Orleans, France

[3] Lab Syst & Appl Mech LASMAP, La Marsa 2078, Turkey

[4] Univ Nantes, LUNAM Univ, IUT St Nazaire, Res Inst Civil Engn & Mech GeM,CNRS UMR 6183, F-44600 St Nazaire, France

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2013年 / 44卷

关键词：

Blast furnace slag; Cement; Chemical shrinkage; Early-age; Hydration; Heat of hydration; Modeling; AUTOGENOUS-SHRINKAGE; PORTLAND CEMENTS; FLY-ASH; TEMPERATURE; CONCRETE; KINETICS; HEAT; MECHANISMS; POWERS; PASTES;

D O I：

10.1016/j.conbuildmat.2013.02.022

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents a contribution to the modeling of the chemical shrinkage of the slag-blended cement paste (binder) at early age. Assuming that the chemical shrinkage is a direct result of hydration, the hydration modeling of slag-blended cement was studied by considering the interaction between the hydrations of blast furnace slag (BFS) and ordinary Portland cement. The reaction of BES in the presence of calcium hydroxide CH (Portlandite) produced from the hydration of the cement was investigated. The kinetic hydration of cement was developed, and the volume phases in the cementitious material during the hydration process were calculated. The chemical shrinkage, which is the negative volume balance between the reactants and the products formed, is then calculated. In parallel with this numerical modeling, an experimental study was conducted to investigate the effect of slag's addition (0%, 30%, 50% and 80%) on the heat of hydration and chemical shrinkage at early age (maturation up to 7 days). The proposed hydration model incorporates the effect of following variables; the chemical composition of the binder, the fineness, the water to binder ratio (w/b), the curing time and the temperature. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：368 / 380

页数：13

共 55 条

[1]

[Anonymous], 2005, 7232 NISTIR

[2]

[Anonymous], 1986, Physical Chemistry

[3] Kinetics of phase change I - General theory [J].

Avrami, M .

JOURNAL OF CHEMICAL PHYSICS, 1939, 7 (12) :1103-1112

[4] The effects of supplementary cementing materials in modifying the heat of hydration of concrete [J].

Ballim, Yunus ;

Graham, Peter C. .

MATERIALS AND STRUCTURES, 2009, 42 (06) :803-811

[5] Effects of cement particle size distribution on performance properties of Portland cement-based materials [J].

Bentz, DP ;

Garboczi, EJ ;

Haecker, CJ ;

Jensen, OM .

CEMENT AND CONCRETE RESEARCH, 1999, 29 (10) :1663-1671

[6] Quasielastic neutron scattering study of the effect of water-to-cement ratio on the hydration kinetics of tricalcium silicate [J].

Berliner, R ;

Popovici, M ;

Herwig, KW ;

Berliner, M ;

Jennings, HM ;

Thomas, JJ .

CEMENT AND CONCRETE RESEARCH, 1998, 28 (02) :231-243

[7] A multiscale mictomechanics-hydration model for the early-age elastic properties of cement-based materials [J].

Bernard, O ;

Ulm, FJ ;

Lemarchand, E .

CEMENT AND CONCRETE RESEARCH, 2003, 33 (09) :1293-1309

[8]

Biernacki JJ, 2002, J AM CERAM SOC, V85

[9] The effect of particle size distribution on the properties of blended cements incorporating GGBFS and natural pozzolan (NP) [J].

Binici, Hanifi ;

Aksogan, Orhan ;

Cagatay, Ismail H. ;

Tokyay, Mustafa ;

Emsen, Engin .

POWDER TECHNOLOGY, 2007, 177 (03) :140-147

[10] Chemical shrinkage of cement pastes and mortars at very early age: Effect of limestone filler and granular inclusions [J].

Bouasker, M. ;

Mounanga, P. ;

Turcry, P. ;

Loukili, A. ;

Khelidj, A. .

CEMENT & CONCRETE COMPOSITES, 2008, 30 (01) :13-22

← 1 2 3 4 5 6 →