干混发泡混凝土的制备

Preparation of dry mixed foam concrete

以过碳酸钠为固体发泡剂,制备出可现场施工的发泡混凝土。对干混发泡混凝土的物料配合比进行了优化,优化后的干混发泡混凝土组分配合比为:水泥质量为2000 g,砂子质量为350 g,粉煤灰质量为500 g,生石灰质量为250 g,过碳酸钠质量为120 g,复合稳泡剂(m_(可在分散胶粉):m_(硬脂酸钙)=1:1)加入量为18g。在此条件下,参照GB/T 11970—1997和JC/T 1062—2007技术标准对发泡混凝土的性能进行了测定,结果表明:发泡混凝土的绝干密度为840 kg/m3,抗压强度为4.0 MPa,吸水率为8.3%。

Foaming agent sodium percarbonate had been used to prepare foamed concrete ,which could use on site.The suitable mass ra- dio of the foamed concrete had been optimized：mix 2 000 g cement,350 g sands ,500 g fly ash ,250 g quick lime, 120 g sodium percar- bonate and 18 g foam stabilizer （ mproteins ： mcalcium stearate = 1 ： 1 ）. tested the foamed concrete according to GB/T 11970--1997 and JC/T 1062--2007, results show：on suitable condition, the foamed concrete＇oven- dry density is 840 kg/m3 ,compression strength is 4.0 MPa, water absorption is 8.3%.