摘要
以粉煤灰,高炉矿渣为粉体原料,标准砂为骨料,采用振动成型方法,在蒸压釜中蒸压养护9h(养护温度为192℃),制备了矿物聚合材料。实验结果显示:制品的饱水抗压强度达72.1MPa;含水率和吸水率分别为4.88%和6.84%;在20℃下,制品在浓度为1.0mol/L的硫酸溶液中浸泡24h,其质量损失率为0.78%;在浓度为1.0mol/L的NaOH溶液中浸泡24h,其质量损失率为0.39%。以制品的抗压强度为指标,研究了主要因素(粉煤灰占粉体的比例、硅酸钠占液相的比例、标准砂占固相的比例和粉体与液相的质量比)对制品性能的影响。结果表明:粉煤灰占粉体的比例对矿物聚合材料的抗压强度影响最大;硅酸钠水玻璃在液相中的比例为75%,且标准砂占固相的比例为70%时,可制得力学性能良好的矿物聚合材料。对综合因素分析表明:利用粉煤灰和高炉矿渣,采用蒸压法工艺制备石英基矿物聚合材料,具有生产周期短,工艺所需设备等条件已成熟等优势,在技术上是可行的。
The flyash and slag, with standard sand as aggregate, were used as principal materials to prepare mineral polymer. Quiver moulding method was adopted to manufacture the mineral polymer, and the module was cured at 192℃ in autoclave for 9 hours. The compressive strength of the products reach up to 72.1MPa. The water content and water absorbability of the representative products are 4.88% and 6.48% respectively. The mass loss of the product are 0.78% and 0.39% while the specimen was inundated in sulfuric acid solution and sodium hydroxide with a concentration of 1.0mol/L for 24h at 20℃. The current experimental results show that the content of flyash in the powder materials is the primary effective factor on the mechanical properties of the products. High performance mineral polymer can be prepared while the content of sodium silicate in the alkaline liquid is 75 % and the standard sand in the solid materials kept around 70%. Analysing the different factors of consideration, preparation of quartz-based mineral polymer by autoclaved process and based on flyash and slag is viable on the technique. The period of preparing by autoclaved technique＇ s is short and the condition of the equipments is fairly available in the current industry.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2007年第1期13-18,共6页
Bulletin of the Chinese Ceramic Society
基金
矿物材料国家专业实验室开放基金(04101)资助
