国家自然科学基金资助项目(50672137);重庆市自然科学基金资助项目(CSTC2008BB4375)
选用4种低钙粉煤灰,通过实验室模拟方法制备湿排粉煤灰,采用抗压强度比表示粉煤灰活性,研究了模拟湿排时间、温度、pH值以及海水湿排的粉煤灰活性变化。结果显示,随着湿排时间延长,粉煤灰活性呈早期降低快后期渐缓趋势;高温湿排的早期粉煤灰活性有一定提高;酸性环境能明显提高粉煤灰活性;海水湿排粉煤灰活性变化规律与淡水湿排粉煤灰类似。可以认为,湿排粉煤灰活性总体呈降低趋势,有些情况下湿排粉煤灰活性表现增加,是因为湿排溶蚀后暴露出更多的活性物质有利于粉煤灰活性的发挥。
To use fly ash, it is necessary to understand its activity variation under different wet conditions. Four low-calcium wet fly ash preparations are simulated in the laboratory. Fly ash activity is indicated by measuring specific compressive stre
吴传明,侯鹏坤,汪克进,王智,罗晖.湿排粉煤灰活性影响因素试验[J].重庆大学学报,2009,32(6):643-647.