SAC-粉煤灰-再生微粉发泡体系的性能

Performance of SAC-ash/Recycled Powder Foaming System

以硫铝酸盐水泥、粉煤灰和再生微粉为复合胶凝材料,基于双氧水发泡工艺制备发泡保温材料。研究发泡剂用量和再生微粉掺量对发泡水泥的气孔孔径、抗压强度和干表观密度的影响,以及干表观密度和抗压强度的关系。试验结果表明:当再生微粉掺量相同时,发泡水泥的干表观密度和抗压强度均随发泡剂用量增加而降低,而发泡水泥的气孔孔径增大;当发泡剂用量相同时,干表观密度、抗压强度和气孔孔径随再生微粉掺量的增加而较小,而干表观密度和气孔孔径的减小幅度较小。发泡水泥的干表观密度与抗压强度具有良好的线性相关性,R^2为0.96936。

Based on process of peroxide foaming technology, we prepared foam insulation materials using sulfur aluminate cement, fly ash and recycled powder as composite cementing materials. After that we investigated the influence of aerating powder dosage and recycled powder dosage on pore size, compressive strength, dry apparent density of the foaming cement, and the relationship between the dry apparent density and compressive strength. The results show that. when using the same amount of recycled powder, dry apparent density and compressive strength of the foam cement decreases with increases of the amount of aerating powder dosage, but the pore size of foam cement increases; when using the same amount of aerating powder, dry apparent density, compressive strength and pore size decreases with the increase of recycled powder dosage, dry apparent density and pore size decreased insignificantly. Dry apparent density of the foam cement has a good linear correlation with the compressive strength, and R2 is 0. 96936.