欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
利用Box-Behnken实验设计（BBD）方法研究水溶性聚合物（聚乙烯醇（PVA）、聚丙烯酰胺（PAM））和化学添加剂（有机硅消泡剂（SD）、聚羧酸减水剂（PC））复配对水泥砂浆抗压强度的影响,得出能反映化学组分掺量与水泥砂浆强度关系的二次方程、化学组分与水泥砂浆强度的帕累托图（Parrot）.结果表明：聚乙烯醇对水泥ld砂浆强度的贡献最大,随着龄期的增长,作用逐渐减小.聚丙烯酰胺对强度的影响主要体现在28 d,聚羧酸减水剂的作用主要体现在3d.此外,有机硅消泡剂和聚丙烯酰胺的交互作用存在于整个水化过程中,而有机硅消泡剂和聚羧酸减水剂的交互作用主要体现在3d前.
英文摘要：
Influences of water-soluble polymers of polyvinyl alcohol （PVA） and polyacrylamide （PAM）,and chemical additive of silicone defoamer （SD） and polycarboxylate superplasticizer （PC） on the strength development of mortar were investigated by Box-Behnken design （BBD）.The quadratic equations for the correlation between dosages of chemicals and the strength of mortar were obtained,and the orders of effectiveness of chemicals were validated in Pareto charts with contour plots to illustrate chemicals and their interactions for the strength enhancement of mortar.Results showed that PVA made the most contributions to 1 d strength,and the longer the curing time,the weaker the effect.The effects of PAM only appeared in 28 d,and superplasticizer dominated the strength enhancement of mortar in 3 d.Additionally,the interaction effects of SD and PAM enhanced the strength of cement mortar during all the curing time,but the interaction effects of SD and superplasticizer just appeared in the first 3 d.
同期刊论文项目
同项目期刊论文
期刊信息
位置：