Characterizing the effects of Al(OH)3 and Mg(OH)2 on reaction products and drying shrinkage characteristics of alkali-activated slag
نویسندگان
چکیده
This study is undertaken to explore the relationship between reaction products and drying shrinkage of alkali-activated slag (AAS) with varying hydroxide dosage. AAS pastes were firstly produced either Al(OH)3 or Mg(OH)2 investigate effects on composition AAS. Secondly, main formed in pastes, viz. C4AH13, M4AH10, C-S-H, C-A-S-H C-M-S-H, synthesized individually. Synthetic then taken cast respective paste sample examine performance against exposure. The results show that adding indeed improved resistance primarily connected increased crystalline phases, namely hydrotalcite-like phases unreacted Mg(OH)2. Whereas did not relieve as interlayer spacing was enlarged, which turn allowed for more shrinkage. Further, investigation individual synthetic illustrates their scales satisfied following order: C4AH13 < M4AH10 C-M-S-H C-S-H C-A-S-H. Moreover, scale found evolve Ca/Si ratio decreased.
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ژورنال
عنوان ژورنال: Case Studies in Construction Materials
سال: 2022
ISSN: ['2214-5095']
DOI: https://doi.org/10.1016/j.cscm.2022.e01309