A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The differential drying shrinkage effect on the concrete surface damage: Experimental and numerical study
https://orcid.org/0000-0002-7326-124X
AbstractThis paper aims to study the relation between drying and the development of damage from concrete surface. For that reason, the experimental study aims to measure the internal relative humidity in four different locations during 500days. In parallel, total shrinkage is monitored for 250days in different positions of the specimen. Under drying conditions, low differential values are noticed. Higher porosity and pore radius in the specimen edge are observed. It can be explained by the effect of the drying on the cement hydration and the surface microcracks appearance. Based on the experimental results, a model which incorporates the main mechanisms for shrinkage is proposed. The difference between the free shrinkage provided by modeling and the measured strain profile allows determining the evolution of the internal stress by an iterative procedure. Finally, by defining the damaged depth in the specimen as the area where the tensile strength is exceeded, the evolution of this distance is deduced. The development of the damaged depth was very fast as long as the relative humidity was close to 100% in the specimen core with a high differential pore pressure between the center and the drying surface.
The differential drying shrinkage effect on the concrete surface damage: Experimental and numerical study
https://orcid.org/0000-0002-7326-124X
AbstractThis paper aims to study the relation between drying and the development of damage from concrete surface. For that reason, the experimental study aims to measure the internal relative humidity in four different locations during 500days. In parallel, total shrinkage is monitored for 250days in different positions of the specimen. Under drying conditions, low differential values are noticed. Higher porosity and pore radius in the specimen edge are observed. It can be explained by the effect of the drying on the cement hydration and the surface microcracks appearance. Based on the experimental results, a model which incorporates the main mechanisms for shrinkage is proposed. The difference between the free shrinkage provided by modeling and the measured strain profile allows determining the evolution of the internal stress by an iterative procedure. Finally, by defining the damaged depth in the specimen as the area where the tensile strength is exceeded, the evolution of this distance is deduced. The development of the damaged depth was very fast as long as the relative humidity was close to 100% in the specimen core with a high differential pore pressure between the center and the drying surface.
The differential drying shrinkage effect on the concrete surface damage: Experimental and numerical study
https://orcid.org/0000-0002-7326-124X
AbstractThis paper aims to study the relation between drying and the development of damage from concrete surface. For that reason, the experimental study aims to measure the internal relative humidity in four different locations during 500days. In parallel, total shrinkage is monitored for 250days in different positions of the specimen. Under drying conditions, low differential values are noticed. Higher porosity and pore radius in the specimen edge are observed. It can be explained by the effect of the drying on the cement hydration and the surface microcracks appearance. Based on the experimental results, a model which incorporates the main mechanisms for shrinkage is proposed. The difference between the free shrinkage provided by modeling and the measured strain profile allows determining the evolution of the internal stress by an iterative procedure. Finally, by defining the damaged depth in the specimen as the area where the tensile strength is exceeded, the evolution of this distance is deduced. The development of the damaged depth was very fast as long as the relative humidity was close to 100% in the specimen core with a high differential pore pressure between the center and the drying surface.
The differential drying shrinkage effect on the concrete surface damage: Experimental and numerical study
Samouh, Hamza (author) / Rozière, Emmanuel (author) / Loukili, Ahmed (author)
Cement and Concrete Research ; 102 ; 212-224
2017-09-28
13 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2017
| British Library Online Contents | 2017
Coupling damage - drying shrinkage: experimental study and modelling
| British Library Conference Proceedings | 2000
Experimental Study Self-Compacting Concrete with Autogenous Shrinkage and Drying Shrinkage
| British Library Conference Proceedings | 1998
Prediction of Differential Drying Shrinkage in Concrete
| Online Contents | 1998