烧结粉煤灰陶粒混凝土配合比优化试验研究  

Experimental research on the optimization of mix proportion of sintered fly ash ceramsite concrete

作　　者：孔哲[1] 李秋义[1] 岳公冰[1] 郭远新[1] 谢汝朋[1] 

机构地区：[1]青岛理工大学蓝色经济区工程建设与安全协同创新中心,山东青岛266033

出　　处：《混凝土》2016年第4期141-146,共6页Concrete

基　　金：山东省高校优秀科研创新团队计划资助

摘　　要：通过采用粉煤灰烧结而成的陶粒作为轻骨料,并掺加一定量的粉煤灰制备陶粒混凝土,系统研究了胶凝材料用量与粉煤灰掺量对其工作性能和力学性能的影响,并根据不同粉煤灰掺量条件下胶凝材料用量与28 d抗压强度关系线性回归得到不同强度等级混凝土的推荐配合比。研究结果表明,胶凝材料总量为300 kg/m^3且粉煤灰掺量为0时混凝土净用水量达到最大为120 kg/m^3,随着胶凝材料用量及粉煤灰掺量的增加,其净用水量逐渐减少;当粉煤灰掺量为15%时,陶粒混凝土的后期强度达到最高,相比早期强度增大幅度达89.3%。It adopting sintered fly ash ceramsite as lightweight aggregate and using fly ash replace cement to prepare ceramsite con- crete,researching the impact of the dosage of gelled material and content of fly ash on its work performance and mechanical properties, and under the condition of different dosage of fly ash, according to the linear regression relationship between the dosage of gelled material with 28 days compressive strength to get the recommended mix proportion of different strength grade of concrete. The research resuits show that when the dosage of gelled material of 300 kg/m^3 and the admixture of fly ash being 0, the net water consumption reached 120 kg/m^3 to the maximum, and with the increase of the dosage of gelled material and content of fly ash, its net water consumption gradually reduce. When the dosage of fly ash to 15%, the later strength of ceramsite concrete reach the highest intensity, compared with the early strength, the increasing extent up to 89.3%.

关 键 词：陶粒混凝土 粉煤灰掺量 净用水量 抗压强度 配合比 

分 类 号：TU528.062[建筑科学—建筑技术科学]