摘要
本文研究了高温养护时间、高温养护前的时间延迟、养护温度以及用碱量对高钙粉煤灰地质聚合物抗压强度的影响。结果表明:高温养护时间为3 d时,高钙粉煤灰地质聚合物的抗压强度达到最大值;超过3 d后强度变化不明显;高温养护前适当的时间延迟在一定程度上有益于强度的发展。随着养护温度的升高,抗压强度近似线性增长;养护温度达到为75℃时,抗压强度达到最大值50.8 MPa;之后随温度的升高强度降低。当NaSiO3/NaOH为1.5时,高钙粉煤灰地质聚合物的强度最高。
The effects of curing period, time delay, curing temperature and the concentration of NaOH on the compressive strength of fly ash based geopolymer were studied. The results show that the compressive strength of fly ash based geopolymer reaches to the maximum when the curing period is 3 d and its variation is not significant beyond 3 d. Proper time delay before high temperature curing is helpful to the compressive strength to some extent. With the increase in curing temperature, the compressive strength increases by nearly linear approximation. When the curing temperature is 75℃ , the compressive strength reaches to the maximum of 50.8 MPa. And then it decreases with curing temperature. The compressive strength goes up to the maximum with the sodium silicate to NaOH ratio of 1.5.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2015年第8期2167-2170,2176,共5页
Bulletin of the Chinese Ceramic Society
