水泥固化体绝热温升试验研究

Test Study of Cement Solidified form Adiabatic Temperature Rise

对动力堆乏燃料后处理中放废液水泥固化体绝热温升进行了试验研究。研究了不同水灰比、不同产地的基质材料对固化体绝热温升的影响,对影响因素进行了较为系统的分析。试验结果表明,甘肃祁连山水泥股份有限公司生产的32.5级普通硅酸盐水泥和兰州西固热电厂生产的Ⅰ级粉煤灰是比较合适的基质材料,随着水灰比增大,固化体中心温度逐渐降低,因此,在该废液大体积浇注水泥固化过程中,在灰浆及固化体性能满足技术要求的前提下,采用的水灰比应适当提高,以确保固化体质量。

The adiabatic temperature rise of solidified form of Intermediate Level Liquid Waste from power reactor spent fuel reprocessing was studied by the test. The influence of different water cement ratios and matrix from different manufacturers on solidified form adiabatic temperature rise was explored, and the factors were analyzed systematically. Test result showed that the 32.5 grade cement produced by gansu qilianshan cement group Co. , Ltd. and the I grade coal ash from Lanzhou Xigu Thermal Power Plant. The solidified form centre temperature decreased gradually with water cement ra- dio increasing. Thus under the condition that grout and solidified form performance met technique requirements, the water cement ratio should increase properly to ensure solidified form quality in bulk grouting.