Rheological Behavior of Hardened Cement Paste Under Hardened Cement Under Low Stresses

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Title: Rheological Behavior of Hardened Cement Paste Under Hardened Cement Under Low Stresses

Author(s): J. Glucklich

Publication: Journal Proceedings

Volume: 56

Issue: 10

Appears on pages(s): 327-338

Keywords: none

Date: 10/1/1959

Abstract:
A set of simple static experiments with hardened cement paste is described to yield the defcrmational response of the material to low stresses. Using a mechanical analogy, this behavior can be described by the following elements connected in series: (a) a linear spring; (b) elements trans- mitting force by friction; (c) a body composed of a linear spring in parallel with a dash pot (a so-called Kelvin body); and (d) as in (c), except that the piston in the dash pot is made to move in one direction only by means of a nonreturn valve. Alternatively, instead of (c) and (d), a body composed of a dash pot in parallel with a spring which includes slippage elements as in (b). Creep behavior of the material is the superposition of two deformations: nonreversible creep with a relatively short time of retardation, and a reversible creep with a time of retardation one order of magnitude longer. Quantitative results and the dependence of the various parameters on factors such as water-cement ratio and age are briefly mentioned.