陶粒泡沫混凝土轻质隔墙板研究

Study on Ceramsite Foamed Concrete Light Weight Panels for Partition Wall

为了解决泡沫混凝土轻质隔墙板易开裂、强度低的问题,以水泥、粉煤灰、硫铝酸盐水泥、石膏、硅灰为胶凝材料,掺加减水剂、保水剂、玻璃纤维、发泡剂等外加剂制备了泡沫混凝土。在此基础上,研究了陶粒掺量、搅拌时间、养护方式对陶粒泡沫混凝土料浆表观密度、抗压强度、抗开裂性能的影响,并对采用陶粒泡沫混凝土制备的轻质隔墙板的性能进行了测试。结果表明:当陶粒掺量为180 kg/m^(3)、搅拌时间为30~45 s时,料浆的表观密度可控制在850 kg/m^(3)左右;在养护温度为35℃、相对湿度为90%的条件下,8~24 h脱模的陶粒泡沫混凝土的性能较好;90 mm厚隔墙板的面密度低于60 kg/m2,抗压强度大于5.0 MPa,抗开裂性能良好,其他各项性能也均能满足GB/T 23451—2009《建筑用轻质隔墙条板》的要求。

In order to solve the problem of cracking and low strength of foamed concrete light weight panels for partition wall,the foamed concrete was prepared with cement,fly ash,sulphoaluminate cement,gypsum and silica fume as cementitious materials,with additives such as water reducing agent,water retaining agent,glass fiber and foaming agent.On this basis,the effects of ceramsite content,mixing time and curing method on slurry apparent density,compressive strength and cracking resistance of ceramsite foamed concrete were studied.The performance of light weight panels for partition wall made of ceramsite foamed concrete was tested.The results show that when the ceramsite content is 180 kg/m^(3) and the mixing time is 30~45 s,the apparent density of slurry can be controlled at about 850 kg/m^(3).Under the condition of curing temperature of 35℃and relative humidity of 90%,the performance of 8~24 h demoulding ceramsite foamed concrete is better.The surface density of 90 mm thick partition wall panel is less than 60 kg/m2,the compressive strength is more than 5.0 MPa,and the cracking resistance is good,and other properties meet the requirements of GB/T 23451—2009 Light Weight Panels for Partition Wall Used in Buildings.