文档介绍：
纳米 SiO2 对泡沫混凝土强度的影响研究及
机理分析#
张静1,2,刘向东1,于建民1,3*
5
10
(1. 内蒙古工业大学材料科学与工程学院,呼和浩特 010050;
2. 内蒙古建筑职业技术学院机电与暖通工程分院,呼和浩特 010070;
3. 内蒙古建筑职业技术学院建筑工程分院,呼和浩特 010070)
摘要:以快硬型硫铝硅酸盐水泥为主要原料,用粉煤灰取代部分水泥, 以 H2O2、Fecl3 等物质
作为发泡剂,以硬质酸钙作为稳泡剂制备泡沫混凝土。探讨了纳米 SiO2 对泡沫混凝土抗压强
度的影响。初步探讨纳米 SiO2 泡沫混凝土形成过程的机理分析。研究表明,通过添加纳米
SiO2,7 天的抗压强度最高可提高 15%,28 天的抗压强度最高可提高 18%。纳米 SiO2 的加
入改变了泡沫表面吸附分子的分子结构与他们之间的相互作用。
关键词:建筑材料;泡沫混凝土;纳米 SiO2;粉煤灰;H2O2;Fecl3
中图分类号:
15
Effect of nano SiO2 on the properties and form mechanism
of foamed concrete
Zhang Jing1,2, Liu Xiangdong1, Yu Jianmin1,3
(1. School of Materials Science and Engineering, Inner Mongolia University of Technology,
20
25
30
35
40
Hohhot 010051;
2. Mechanical and Electrical Department,Inner Mongolia Technical Collage of Construction,
Hohhot 010070;
3. Construction Department,Inner Mongolia Technical Collage of Construction, Hohhot 010070)
Abstract: In this paper,foamed concrete is prepared with sulphate aluminium cement, fly ash,
H2O2, Fecl3,calcium stearate and nano SiO2. The impact of the content of ano SiO2 on the
properties pressive strength of foamed concrete is investigated, as well as the additive of
ano SiO2 in the formation of foamed concrete is analyzed. Results of the study show that
compressive strength of 7 days can be increased 15% pressive strength of 28 days can be
increased 18% respectively through