Ammonia Emission from Concrete Admixtures Sold in Lanzhou
- VernacularTitle:兰州市室内建筑用混凝土外加剂的氨释放水平
- Author:
Yujuan CHEN
;
Xingrong LIU
;
Siyu LI
- Publication Type:Journal Article
- Keywords:
Air pollution, indoor;
Ammonia;
Concrete admixture
- From:
Journal of Environment and Health
1992;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
0.05). The average amount of ammonia emission was 0.012%, 0.024% and 0.081% at pH values of 9, 11 and 13 respectively. Ammonia emission increased with the increasing pH values, especially for those admixtures containing carboxylate. Conclusion Ammonia emission from concrete admixtures sold in Lanzhou exceed the standard in different degree.Higher pH value may accelerate the ammonia emission from concrete admixtures and cause higher concentration of ammonia in indoor air.
