Title:
Effect of Sulfate attack on Compression Properties of Cement-Based Mixtures containing phosphogypsum
Author(s):
Cheng Sheng Ouyang, Wimal Suaris, and Wen F. Chang
Publication:
Materials Journal
Volume:
85
Issue:
2
Appears on pages(s):
82-89
Keywords:
compressive strength; damage; ettringite; expansion; gels; gypsum; mortars (materials); phosphogypsum; portland cements; strength; sulfate attack; wastes; Materials Research
DOI:
10.14359/2284
Date:
3/1/1988
Abstract:
Results from a series of tests conducted to determine the extent of sulfate attack in cement-based mixtures containing phosphogypsum are presented. A model for the mixtures under internal sulfate attack is proposed based on a progressive fracturing concept. A damage variable is defined as a function of the Powers' gel-space ratio. The sulfate attack evidenced by the expansion of the matrix is incorporated as additional nucleated voids. The compressive properties of cement-based mixtures containing phosphogypsum are found to be predicted well by this model.