摘要
通过测定不同磷石膏掺量的过硫磷石膏矿渣水泥浆试样在标准养护条件下和流动水养护条件下的耐水系数,评价过硫磷石膏矿渣水泥浆的耐水性能;并通过测定不同组分过硫磷石膏矿渣水泥浆养护溶液中硫酸根离子浓度随养护龄期的变化规律,对过硫磷石膏矿渣水泥浆组分与耐水性的相关性及溶出机理进行了初步探讨。结果表明,过硫磷石膏矿渣水泥浆在流动水中的耐水系数明显低于静止水中的耐水系数;随着磷石膏掺量的增加,过硫磷石膏矿渣水泥浆的耐水性能逐渐降低;当磷石膏掺量为40%~50%时,过硫磷石膏矿渣水泥浆具有较好的耐水性能。
The hydrolytic resistance of slag cement paste with phosphogypsum containing rich sulfur was evaluated by means of measuring water resistance coefficient of slag cement paste with different phosphogypsum content curing in standard condition and flowing water condition. The change rule of sulfate ion concentration with curing period in curing solution of slag cement paste with phosphogypsum containing rich sulfur with different components was measured, and the dissolving mechanism and the correlation between the cement components and water resistance was discussed. The result showed that the water resistance coefficient of cement paste was lower in flowing water than that in static water significantly. The water resistance decreased with increasing of phosphogypsum content, when the content was 40%-50%, the cement paste could get a better water resistance.
出处
《水泥》
CAS
2017年第4期11-15,共5页
Cement
基金
质检公益性行业科研专项(201510204)
关键词
磷石膏
过硫磷石膏矿渣水泥浆
耐水性能
phosphogypsum
phosphogypsum slag cement paste containing rich sulfur
water resistance
