CAJ | 학술논문

研究了NaOH 和Ca(OH)_2对掺30%,50%和70%粉煤灰浆体性能的影响.研究结果表明:适量碱的掺入对强度有利;未掺激发剂浆体的化学结合水量随着粉煤灰掺量的增加而减少,Ca(OH)_2含量在28 d后开始下降;掺NaOH浆体的结合水量随龄期增长的幅度比未掺激发剂的浆体的大,而掺Ca(OH)_2试样变化较小;未掺激发剂的水泥-粉煤灰体系在早期Ca(OH)_2的峰值较大,且粉煤灰中的莫来石和石英晶体的衍射峰随龄期变化不大;NaOH掺入后,28 d时,粉煤灰中的石英晶体衍射峰明显下降;对于掺激发剂的试样,在7 d时粉煤灰颗粒表面已被腐蚀.
연구료NaOH 화Ca(OH)_2대참30%,50%화70%분매회장체성능적영향.연구결과표명:괄량감적참입대강도유리;미참격발제장체적화학결합수량수착분매회참량적증가이감소,Ca(OH)_2함량재28 d후개시하강;참NaOH장체적결합수량수령기증장적폭도비미참격발제적장체적대,이참Ca(OH)_2시양변화교소;미참격발제적수니-분매회체계재조기Ca(OH)_2적봉치교대,차분매회중적막래석화석영정체적연사봉수령기변화불대;NaOH참입후,28 d시,분매회중적석영정체연사봉명현하강;대우참격발제적시양,재7 d시분매회과립표면이피부식.
The influence of NaOH and Ca(OH)_2 on the properties of paste with 30%,50% and 70% fly ash was studied. The proper alkaline content was in favor of compressive strength. The chemically combined water of paste without activator decreases with the increase of fly ash content,the content of Ca(OH)_2 decreases after 28 d. The increase extent of chemically combined water of pastes with NaOH is higher than that of without activator,and the paste with Ca(OH)_2 is the same. The XRD peak of Ca(OH)_2 of paste without activator is high at early age,and the peak of mullite and quartz has less change along with age. When NaOH is added,the peak of quartz of fly ash has clear drop. The surfaces of fly ash activated has eroded trace at 7 d.