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为了研究聚羧酸减水剂对超细全尾砂膏体充填体弹性模量的影响,制备了不同减水剂掺量、不同养护龄期、不同膏体浓度的充填体试件,通过强度试验分析减水剂掺量、养护龄期、膏体浓度对弹性模量的影响规律。结果显示:减水剂掺量由0.1%增至0.5%、养护龄期延长、膏体浓度由70%增至76%,弹性模量逐渐增大;研究了充填体密度与弹性模量、抗压强度的相关性,并建立回归预测方程,为矿山提供了预测充填体弹性模量和抗压强度的简易方法。
In order to study the effect of polycarboxylate superplasticizer on the elastic modulus of the ultrafine all-tailing paste, the filler specimens with different superplasticizer dosages, different curing ages and different paste concentrations were prepared, Experimental analysis of the superplasticizer dosage, curing age, paste concentration on the elastic modulus of the law. The results showed that when the amount of superplasticizer was increased from 0.1% to 0.5%, the curing age was prolonged, the concentration of paste was increased from 70% to 76%, and the elastic modulus increased gradually. The density, elastic modulus, Pressure intensity and establish a regression prediction equation that provides the mine with a simple way to predict the bulk modulus and compressive strength of the fill.