Analyses and models of the autogenous shrinkage of hardening cement paste: I. Modelling at macroscopic scale

✍ Scribed by C. Hua; P. Acker; A. Ehrlacher

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 931 KB
• Volume: 25
• Category: Article
• ISSN: 0008-8846
• DOI: 10.1016/0008-8846(95)00140-8

✦ Synopsis

After having studied phenomena linked to hydration and self-desiccation, one notes that capillary depression is the main origin of the autogenous shrinkage of hardening cement paste. Based on this mechanism, modelling at macroscopic scale is undertaken for a commonly used cement paste (CPA 55) with a W/C ratio = 0.42. It consists in introducing a macroscopic stress due to the capillary depression and characterizing the viscoelastic aging behavior of the material. The result is in satisfactory agreement with measurements.