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A platform for research: civil engineering, architecture and urbanism
Review of studies published by several research workers on various factors causing failures of cement; main factors in question are free lime, magnesia, and sulfates in conjunction with sufficiently high tricalcium aluminate content; it is shown that critical maximum magnesia content ranges from about 3 to 5% according to cooling rate of clinker; free lime content of less than 2% increases substantially tendency to expansion caused by magnesia; possibility of expansion is also increased when concrete structure is in contact with water and moisture; autoclave test is shown as reliable indicator of cement failure.
Review of studies published by several research workers on various factors causing failures of cement; main factors in question are free lime, magnesia, and sulfates in conjunction with sufficiently high tricalcium aluminate content; it is shown that critical maximum magnesia content ranges from about 3 to 5% according to cooling rate of clinker; free lime content of less than 2% increases substantially tendency to expansion caused by magnesia; possibility of expansion is also increased when concrete structure is in contact with water and moisture; autoclave test is shown as reliable indicator of cement failure.
Decrease in strength of cement
Av cement orsakad bristande volymbestandighet
Aschan, N. (author)
Nordisk Betong ; 9
1965
16 pages
Article (Journal)
English
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