Open AccessStudy on Preparation and Durability of Phosphogypsum Composite Cementitious Foam Concrete
Author(s) -
Jiawei Li,
Zhenping Sun,
Mingjun Pang,
Juntao Tian,
Yujie Ling,
Shi Song Luo,
Fēi Li
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1646/1/012102
Subject(s) - phosphogypsum , carbonation , cement , materials science , durability , ettringite , cementitious , foam concrete , composite material , composite number , compressive strength , salt (chemistry) , portland cement , chemistry , raw material , organic chemistry
Acid base salt solution erosion, carbonization test and freeze-thaw cycle test of cement foam concrete and phosphogypsum based foam concrete were carried out respectively. The results show that compared with cement based foam concrete, phosphogypsum based foam concrete has stronger performance of resisting acid and alkali salt attack. This is mainly due to the fact that its internal cement minerals and hydration products have less active components, and are not easy to react with acid-base salts, and have better ability to resist freeze-thaw cycles at the same time. However, the resistance to carbonation is not as good as that of cement based foam concrete. This is due to the high content of aluminum in the interior and the large volume of ettringite, which is easier to be carbonized.