磷建筑石膏墙体灌浆料的研究

采用磷渣粉、石灰、聚羧酸减水剂及柠檬酸钠缓凝剂与磷建筑石膏混合,制备改性石膏墙体灌浆料,研究了各种组分掺入量对改性建筑石膏物理性能的影响。研究结果表明：各组分添加量恰当时,制备的磷建筑石膏墙体灌浆料综合性能优良,其初凝时间50min,终凝时间57min,干燥抗折强度3.70MPa,抗压强度8.39MPa,放射性符合国家标准要求,在自然状态下可达到基本干燥的状态。

Research on the wall phosphorus gypsum grouting material

Mixing phosphorus slag powder,lime,polycarboxylate superplasticizer and sodium citrate retarder with phosphorus gypsum,the modified wall gypsum grouting material is prepared and studied on the effect of additive components on the physical properties. The results show that the appropriate proportion of each component makes the grouting materials＇performance better. Its initial set time is 50 min,final set time is 57 min,dry flexural strength is 3.70 MPa,compressive strength is 8.39 MPa,radioactivity accords with the national standards,and it can dry basically in the natural state.