CAJ | 학술논문

为了拓宽脱硫石膏的利用途径，选取萘系高效减水剂( NF)、聚羧酸系减水剂( HC)、木质素磺酸钠减水剂( SM)对半水脱硫石膏现浇墙体材料进行改性研究。试验结果表明：SM 对半水脱硫石膏凝结时间影响不大，对提高石膏强度的效果与HC及 NF相比不明显；NF使得半水脱硫石膏流动性较差，不适合作为减水剂；HC对凝结时间影响较明显，对半水脱硫石膏强度提高较多，但随其掺量的增加也会产生一些不利的影响。综合考虑减水剂对墙体材料制备过程的初、终凝时间，减水率和扩展度，抗折、抗压强度的影响，选择HC作为半水脱硫石膏现浇墙体材料的减水剂，最佳掺量约为0.5%。
위료탁관탈류석고적이용도경，선취내계고효감수제( NF)、취최산계감수제( HC)、목질소광산납감수제( SM)대반수탈류석고현요장체재료진행개성연구。시험결과표명：SM 대반수탈류석고응결시간영향불대，대제고석고강도적효과여HC급 NF상비불명현；NF사득반수탈류석고류동성교차，불괄합작위감수제；HC대응결시간영향교명현，대반수탈류석고강도제고교다，단수기참량적증가야회산생일사불리적영향。종합고필감수제대장체재료제비과정적초、종응시간，감수솔화확전도，항절、항압강도적영향，선택HC작위반수탈류석고현요장체재료적감수제，최가참량약위0.5%。
T he paper,with the purpose of further commercializing desulfurized plaster,selects Naphthalene agent ( NF) ,Polycarboxylic Acid agent ( HC ) and Sodium Lignosulphonate agent ( SM ) to study the material modification of cast-in-place wall with semi-hydraulic desulphation gupsum. The results indicate that SM fails to play an important role in gupsum setting,while neither HC nor NF largely influences gupsum strength. It has also been noticed that NF is yet well suited to serve as a water reducer,as it undermines the fluidity of the plaster; at the same time HC ,though visibly alters the setting time and improves the gupsum strength,exerts negative impact as its proportion adds up. Considering the agents' in fluence on initial and final setting time,water reducing ratio,spreading performance,bending resistance and compressive strength,HC with the suggested proportion of 0. 5% was chose as the preferable w ater reducer.