材料掺量对不同龄期碱激发粉煤灰混凝土抗压强度的分析  

Analysis of the effect of material dosages on the compressive strength of alkali activated fly ash concrete at different ages

作　　者：邵善庆 龚爱民 王冉 罗加辉 雍康 黄逸尔 金镯 SHAO Shan-qing;GONG Ai-min;WANG Ran;LUO Jia-hui;YONG Kang;HUANG Yi-er;JIN Zhuo(College of Water Conservancy,Yunnan Agricultural University,Kunming 650201,China)

机构地区：[1]云南农业大学水利学院,昆明650201

出　　处：《湖北农业科学》2024年第6期204-206,212,共4页Hubei Agricultural Sciences

基　　金：云南省教育厅科学研究基金项目(2022Y286)。

摘　　要：为提高碱激发粉煤灰混凝土的工程实际应用,基于不同碱激发剂(生石灰粉)掺量(5%、8%、10%)和不同粉煤灰掺量(10%、15%、25%)的碱激发粉煤灰混凝土,对不同龄期(7、28、56 d)的碱激发粉煤灰混凝土抗压强度变化规律进行研究。结果表明,在生石灰粉掺量不变的条件下,随着粉煤灰掺量的增加,碱激发粉煤灰混凝土的7 d抗压强度呈逐渐下降的趋势;在28 d和56 d龄期时,粉煤灰掺量为15%时碱激发粉煤灰抗压强度达到最大。在粉煤灰掺量不变的条件下,当生石灰粉掺量从5%增加到8%时,各龄期的碱激发粉煤灰混凝土抗压强度均增加;当生石灰粉掺量从8%增加到10%时,各龄期的碱激发粉煤灰混凝土抗压强度均降低。In order to improve the practical application of alkali-activated fly ash concrete in engineering,the variation law of compressive strength of alkali activated fly ash concrete at different ages(7、28、56 d)was studied based on different dosages of alkali activator(quicklime powder)(5%、8%、10%)and fly ash(10%、15%、25%).The results showed that under the condition of constant content of quicklime powder,the 7-day compressive strength of alkali-activated fly ash concrete gradually decreased with the increase of fly ash content;at the ages of 28 and 56 days,the compressive strength of alkali-activated fly ash reached its maximum when the fly ash content was 15%.Under the condition of constant fly ash content,when the content of quicklime powder increased from 5% to8%,the compressive strength of alkali-activated fly ash concrete at all ages increased;when the content of quicklime powder increased from 8% to 10%,the compressive strength of alkali activated fly ash concrete at all ages decreased.

关 键 词：材料掺量 龄期 碱激发 生石灰粉 粉煤灰 混凝土 抗压强度 

分 类 号：TU528.1[建筑科学—建筑技术科学]