Internal Stresses and Microcrack Formation Caused by Drying in Hardened Cement Pastes
- 1 July 1978
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 61 (7-8) , 281-283
- https://doi.org/10.1111/j.1151-2916.1978.tb09308.x
Abstract
The shrinkage stresses due to drying and the differences of volume changes and rigidities between the two phases of dense Ca(OH), crystals and porous C‐S‐H gel are estimated. High tensile stresses are calculated around the Ca(OH), crystals at a relatively high humidity. It is also shown by a calculation on the basis of some assumptions that the shrinkage stresses may cause microcracks which drastically increase permeability.Keywords
This publication has 6 references indexed in Scilit:
- Drying shrinkage of cement paste and concrete: A reappraisal of the measurement technique and its significanceCement and Concrete Research, 1976
- Fracture of Hardened Cement Paste in Relation to Surface Forces and PorosityJournal of the American Ceramic Society, 1974
- Identification of hydrated cement constituents using a scanning electron microscope energy dispersive X-ray spectrometer combinationCement and Concrete Research, 1972
- Influence of admixtures on the morphology of calcium hydroxide formed during tricalcium silicate hydrationCement and Concrete Research, 1972
- The effect of the elastic modulus of the aggregate on the elastic modulus, creep and creep recovery of concreteMagazine of Concrete Research, 1964
- Stress Concentrations Around Spheroidal Inclusions and CavitiesJournal of Applied Mechanics, 1951