Sulfate attack on hardened cement paste

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Cement and Concrete Research; (United States)

DOI:https://doi.org/10.1016/0008-8846(94)90199-6· OSTI ID:7288700

Wang, J G ^[1]

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1. Shenzhen Univ. (China). Dept. of Applied Chemistry

Hardened cement paste specimens made with different cement types and varying water-cement ratios (w/c) were immersed in 5% sodium sulfate solution maintained at constant pH value of 6. The distribution curves for ettringite, gypsum, and portlandite phases were obtained by using layer by layer XRD analysis and interpreted in terms of material damage due to sulfate attack. The mechanism of sulfate attack is evaluated in regard to the leaching of Ca(OH)[sub 2] and formation of gypsum and ettringite.

• OSTI ID: 7288700
• Journal Information: Cement and Concrete Research; (United States), Journal Name: Cement and Concrete Research; (United States) Vol. 24:4; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360604* -- Materials-- Corrosion
Erosion
& Degradation
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BUILDING MATERIALS
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CEMENTS
CHEMICAL REACTIONS
COHERENT SCATTERING
CONTAINMENT
CORROSION
CORROSIVE EFFECTS
DIFFRACTION
HYDROGEN COMPOUNDS
HYDROXIDES
MANAGEMENT
MATERIALS
OXYGEN COMPOUNDS
PHASE STUDIES
SANITARY LANDFILLS
SCATTERING
SODIUM COMPOUNDS
SODIUM SULFATES
SULFATES
SULFUR COMPOUNDS
WASTE DISPOSAL
WASTE MANAGEMENT
X-RAY DIFFRACTION