TY - JOUR
T1 - Internal and external sources of sulfate ions in portland cement mortar
T2 - two types of chemical attack
AU - Ouyang, Chengsheng
AU - Nanni, Antonio
AU - Chang, Wen F.
PY - 1988/9
Y1 - 1988/9
N2 - This paper compares the effects of chemical attack on portland cement mortar from internal and external sulfate sources. Factors such as cement type, cement content, water to cement ratio, and addition of fly ash are studied with respect to expansion and strength development and it is found that substantial differences exist between the two types of sulfate attack. Expansion values used to evaluate both external and internal attack are discussed and a low bound of maximum expansion corresponding to the beginning of strength loss for internal sulfate attack is proposed. This threshold is a function of cement content rather than a constant.
AB - This paper compares the effects of chemical attack on portland cement mortar from internal and external sulfate sources. Factors such as cement type, cement content, water to cement ratio, and addition of fly ash are studied with respect to expansion and strength development and it is found that substantial differences exist between the two types of sulfate attack. Expansion values used to evaluate both external and internal attack are discussed and a low bound of maximum expansion corresponding to the beginning of strength loss for internal sulfate attack is proposed. This threshold is a function of cement content rather than a constant.
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U2 - 10.1016/0008-8846(88)90092-0
DO - 10.1016/0008-8846(88)90092-0
M3 - Article
AN - SCOPUS:0024082456
VL - 18
SP - 699
EP - 709
JO - Cement and Concrete Research
JF - Cement and Concrete Research
SN - 0008-8846
IS - 5
ER -