An Elastoplastic Damage Constitutive Model for Cementitious Materials under Wet-Dry Cyclic Sulfate Attack
Open Access
- 1 January 2013
- journal article
- research article
- Published by Hindawi Limited in Mathematical Problems in Engineering
- Vol. 2013, 1-7
- https://doi.org/10.1155/2013/562410
Abstract
The mechanical properties of cement mortars subjected to wet-dry cyclic sulfate attack were studied by the compression strength test. The results showed that the ultimate compressive strength increased with number of cycles at the initial stage. However, after a certain time, it started to decrease with further increases in the number of cycles. Moreover, the concentration of the sodium sulfate solution proved to be an important factor affecting the ultimate compressive strength. Based on continuum damage mechanics theory, an elastoplastic damage constitutive model is presented to describe the mechanical behavior of cementitious materials under compressive stress. The results obtained agree well with the experimentally observed elastic, plastic, and damage characteristics of cement mortars under compressive stress.Keywords
Funding Information
- National Natural Science Foundation of China (51009061, BK2011026)
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