Durability of Cement Concrete in Sulfate Environment
Interim technical rept.
CALIFORNIA UNIV BERKELEY STRUCTURAL ENGINEERING LAB
Pagination or Media Count:
Sulfate attack phenomenon in cement concrete is reviewed. Summary of test results on 67 years old massive concrete blocks lying submerged in sea water of the Los Angeles Harbor is presented. Surface deterioration of concrete which was more permeable gave evidence of sulfate attack. Review of some recent field and laboratory studies shows that under certain conditions even good quality cements made with sulfate resisting type portland cements can be vulnerable to long-time sulfate attack. Problems associated with lack of adequate correlation between the laboratory tests and the field performance of cement concrete exposed to sulfate waters are described, and a new laboratory test method which is quick and reliable is presented. Results are given for 5 different types of cements tested according to the new method.
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