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
DOI:
10.14359/8100
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.