摘要
本文研究了NaF存在时,非化学计量配比(CaO/SiO_2=2.2)的C_2S的形成和水化。实验结果表明,当将掺3%NaF的非化学计量试样在1370K煅烧1小时,空气急冷后所得的β—C_2S样品中含21%C_3S。这样品的水化速率较高,它的28天以后净浆的抗压强度甚至超过纯C_3S浆体强度。
The formation and hydration of a non-stoichometric C_2S with the addition of NaF was studied. The experimental showed, by adding 3% NaF to a non-stoichiometric sample (C/S=2.2),about 21% C_3S and 79% C_2S, were formed at 1370 OK by air quenching. The hydration reactivity of this sample was higher than that of the β-C_2S formed at 1270OK. The compressive strength of this sample after 28 days hydration was even higher than the C_3S paste in the same hydration age.
出处
《南京工业大学学报(自然科学版)》
CAS
1989年第1期57-62,共6页
Journal of Nanjing Tech University(Natural Science Edition)
关键词
β—硅酸二钙
非化学计量
水化
β-dicalcium silicate
non-stoichiometry
hydration