粉煤灰砂浆早期抗压强度试验研究  

Experiment Study on Early Compressive Strength of Fly Ash Mortar

作　　者：徐云[1] 

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《湖南理工学院学报（自然科学版）》2013年第3期65-69,共5页Journal of Hunan Institute of Science and Technology(Natural Sciences)

摘　　要：根据不同配合比研制的粉煤灰掺量13.6%的3组,粉煤灰掺量11.5%的3组,共6组M5粉煤灰砂浆.经过3天自然养护,对其进行了抗压强度试验,研究粉煤灰砂浆早期抗压强度的影响因素.试验研究表明:引气剂(微沫剂)掺入会降低粉煤灰砂浆的早期强度.减水剂的掺入可以提高粉煤灰砂浆的早期强度.减水剂掺量一定时,水胶比越小,粉煤灰水泥的早期抗压强度越高.从6组试件中选出28天抗压强度可达M5以上的粉煤灰砂浆,其配合比为:水泥:粉煤灰:轻砂:水:微沫剂:减水剂=1:0.7:4.4:2.0:0.00326:0.096.In this paper, according to different mixing proportion, it develops M5 fly ash mortar of the six groups, the three groups of 13.6% fly ash content and the another groups of 11.5% fly ash content. Natural curing after 3 days, it Studies the influence factors of early compressive strength of fly ash mortar through the compressive strength test. Research shows that： air-entraining agent （micro foam agent） incorporation will lower early strength of fly ash mortar. The mixed water reducing agent can improve the early strength of fly ash mortar. When the dosage of water reducing agent arrives a certain level, the smaller the water/cement ratio is, the higher the early compressive strength of fly ash cement is. Specimens are selected from 6 group 28 days compressive strength of fly ash mortar which can reach more than M5,the mixing ratio is： cement： fly ash ：light sand ：water ：micro foam agent ：water reducing agent=-1：0.7：4.4：2.0：0.00326：0.096.

关 键 词：配合比 粉煤灰砂浆 早期抗压强度 

分 类 号：TQ172[化学工程—水泥工业]