采用化学发泡法,以普通硅酸盐水泥和粉煤灰为主要原料,制备发泡粉煤灰A级保温材料.系统研究了稳泡剂、促凝剂、纤维以及发泡剂等关键因素对保温材料性能的影响,优化了发泡粉煤灰保温材料配方设计,通过SEM及Image Pro Plus 6.0等手段对试件进行表征和计算,对各因素的影响机理进行了分析.结果表明,当稳泡剂、促凝剂、纤维和发泡剂掺量分别为1.2%,0.050%,0.4%和5.0%时制备的发泡粉煤灰质量吸水率为47.11%、抗压强度为0.523 MPa、绝干密度为248.11 kg/m3和导热系数为0.067 W/(m·K),满足JG/T266-2011《泡沫混凝土》中A03级泡沫混凝土要求.
This investigation adopted chemical foaming method to prepare fly ash foamed Grade A heat insulating material.Ordinary portland cement and fly ash were taken as main raw materials in this course.Effects of key factors such as foaming stabilizer, accelerator, and fiber and foaming agent on tested samples were explored deeply in present work.Meanwhile, this study optimized the formula design of this new material, as well as applied SEM and Image Pro plus 6.0 to characterize and calculate foamed fly ash samples.Taken overall experiment results revealed that in the condition that the mixing amount of foaming stabilizer, accelerator, and fiber and foaming agent are 1.2%, 0.050%, 0.4% and 5.0%, water absorbing rate, compressive strength, dry density, and conductivity factor are 47.11%, 0.523 MPa , 248.11 kg/m3 and 0.067 W/(m·K), respectively.At the same time, all these parameters could fix the requirement of Grade A03 according to the standard of Foam Concrete (JG/T266-2011).
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%