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The Restraining influence of unhydrated cement on the creep and shrinkage of cement paste

Date

1968

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Abstract

The investigation consists of a study of the restraining influence of unhydrated cement on the creep and shrinkage of cement paste. The effect of the aggregate-like behaviour of unhydrated cement on the rheological properties of hydrated cement paste is known. Tests were carried out on specimens containing cement paste of two water-cement ratios (Oo35 and 0.45 by weight) and different volumetric percentages of cement clinker. Type I nonnal Portland cement manufactured from the same batch as the clinker was used. The time-dependent deformation of hydrated cement paste is analysed as that of a composite material consisting of hard grains of unhydrated cement embedded in a continuous soft component of cement gel and pores. The observed values are shown to be more close to those calculated by using a series model of composite material. Under simultaneous drying conditions, loaded creep specimens were found to lose more moisture than companion shrinkage specimens . The creep recovery was greater at 95 percent relative humidity than at lower humidities.

Description

Bibliography: p. 65-69.

Keywords

Citation

Mullick, A. K. (1968). The Restraining influence of unhydrated cement on the creep and shrinkage of cement paste (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/14461

URI

http://hdl.handle.net/1880/1816

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Restricted Theses and Dissertations

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