石墨改性EPS颗粒对超轻泡沫混凝土性能的影响.pdf

圆园22 年第7 期 混凝土 与水 泥制品 圆园22 晕燥.7 7 月 悦匀陨晕粤 悦韵晕悦砸耘栽耘 粤晕阅 悦耘酝耘晕栽 孕砸韵阅哉悦栽杂 J uly 石墨改性EPS 颗粒对超轻泡沫混凝土性能的 影响 康升荣 程宝军 麻鹏飞 史博元 中建西部建设建材科学研究院有限公司袁四川成都 610064冤 3 摘 要 采用普 硅酸盐水泥尧气凝胶粉尧石墨改性EPS 颗粒尧发泡剂等制备了干密度约为120 kg/m 的石墨改 性EPS 颗粒超轻泡沫混凝土袁研究了石墨改性EPS 颗粒对其密度尧力学性能尧吸水率尧导热 数和孔结构的影响遥 结 果表明院当石墨改性 EPS 颗粒掺量为30% 时袁超轻泡沫混凝土的各项性能最优袁抗压强度为0.25 MPa袁吸水率为 10.3% 袁导热 数为0.032 6 W/(m窑K)曰随着石墨改性EPS 颗粒掺量的增加袁损泡率明显增大袁孔径分布和孔结构参数 发生明显改变遥 关键词 EPS 颗粒曰泡沫混凝土曰性能研究曰微观孔结构 中图分类号 TU528.2 文献标识码 A doi:10.19761/j .1000-4637.2022.07.005.05 Influence of Graphite Modified EPS Particles on the Performance of Ultra-light Foam Concrete KA NG She ng-rong, CHENG Bao-j un, MA Pe ng-fei, SHI Bo-yuan (China West Construction Academy of Building Materials Science Co., Ltd., Chengdu 610064, China) Abstract: The foam concrete with a dry density of 120 kg/m3 was prepared by ordinary portland cement, aerogel powder, graphite modified EPS particles, foaming agent and additive. The effects of graphite modified EPS particles content on the density, mechanical properties, water absorption, thermal conductivity, and pore structure of foam concrete were studied. The results show that when graphite modified EPS particles with the content of 30% are added, the foam concrete has the best properties, the compressive strength is 0.25 MPa, the water absorption is 10.3%, and the thermal conductivity is 0.032 6 W/(m 窑K)