Moisture migration and drying properties of hardened cement paste and mortar

Numao, Tatsuya; Mihashi, Hirozo; Fukuzawa, Kimio

doi:10.1016/0029-5493(94)00939-v

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…Regarding drying shrinkage, however, it has been reported that higher temperatures lead to greater shrinkage Numao 1992, Numao andMihashi 1991) while the authors (2005) and Cebeci et al (1989) have reported that ultimate drying shrinkage at high temperatures differs little from that at normal temperatures. To look into this, drying shrinkage at elevated temperatures is investigated with the proposed model, comparing results with and without use of the enhanced moisture model.…”

Section: Coupling With the Enhanced Moisture Modelmentioning

confidence: 98%

Time-Dependent Constitutive Model of Solidifying Concrete Based on Thermodynamic State of Moisture in Fine Pores

Asamoto

Ishida

Maekawa

2006

ACT

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An enhanced multi-chemo-physical model for the time-dependent deformation of concrete is proposed based on thermodynamic state of moisture in micro-pores. The moisture migration mechanism is divided into 1) moisture transport through CSH gel grains and 2) water in motion within the inter-particle spaces of hydrate micro-products. The new kinematic model makes it possible to simulate both long-and short-term concrete creep. An enhanced mechanistic law of stress path dependency is introduced to cope with a wide variety of stress and ambient histories as well. Time-dependency at elevated temperature is also investigated with current high-accuracy thermo-hygro dynamics. The instantaneous plasticity in direct connection with evaporating moisture from CSH crystal inter-layers is incorporated into the predictive system. Although some mechanisms remain unverified, drying shrinkage and creep at high temperature are fairly simulated.

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Section: Coupling With the Enhanced Moisture Modelmentioning

confidence: 98%

Time-Dependent Constitutive Model of Solidifying Concrete Based on Thermodynamic State of Moisture in Fine Pores

Asamoto

Ishida

Maekawa

2006

ACT

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“…The transport of heat and moisture in concrete can induce pore pressure, thermal stress and shrink-age stress which may cause cracks and explosive spalling of the structure when subjected to severe physical phenomena. 1,2 Thus it is important to correctly predict the transport behaviours in concrete in order to better understand damage processes.…”

Section: Introductionmentioning

confidence: 99%

Study of heat and moisture transport for concrete sandwich panel wall construction

Lü¹,

Lü²,

Penttala³

et al. 2004

Building Services Engineering Research and Technology

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This paper presents a mathematical model for simulation of transient heat and moisture transfer in concrete sandwich panel wall constructions with variable outdoor temperature and humidity as boundary conditions. The objective is to evaluate the possibility of diminishing moisture content in constructions in order to reduce deterioration risks. Some control strategies involving installation of heating cables in the air gap are proposed and investigated. Simulations demonstrate that the moisture condition of the construction can be improved by using the control regulation developed in this paper. This study improves the understanding of the heat and moisture transport properties of concrete sandwich panels and provides useful information on the decision making in solving the construction's moisture problems.

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Leaching Processes and Evaluation Tests for Inorganic Constituent Release from Cement-Based Matrices

Kosson¹,

Garrabrants²

2004

Stabilization and Solidification of Hazardous, Radioactive, and Mixed Wastes

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Moisture migration and drying properties of hardened cement paste and mortar

Cited by 7 publications

References 2 publications

Time-Dependent Constitutive Model of Solidifying Concrete Based on Thermodynamic State of Moisture in Fine Pores

Time-Dependent Constitutive Model of Solidifying Concrete Based on Thermodynamic State of Moisture in Fine Pores

Study of heat and moisture transport for concrete sandwich panel wall construction

Leaching Processes and Evaluation Tests for Inorganic Constituent Release from Cement-Based Matrices

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