期刊文献+

减水剂对建筑石膏作用效果影响因素的研究 被引量:6

Study on the Factors of Influencing Water-reducing Effect of Superplasticizers in Building Gypsum
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摘要 为了提高建筑石膏中减水剂的使用效率,试验研究了建筑石膏比表面积、减水剂掺法、pH值等因素对建筑石膏分散性和强度的影响,并对其影响规律进行了分析。结果表明适当增加建筑石膏细度可提高减水剂的使用效率;不同掺法的减水剂作用效果存在较大差异,先掺法效果最好;pH值对减水剂分散效果有一定影响,在弱碱性条件下减水剂分散效果最好。 In order to improve the water-reducing efficiency of superplasticizers, the influence of superplasticizer on the dispersion and strength of building gypsum was investigated from the point of specific surface area of gypsum particles, addition method of superplasticizers and pH value, and their influencing rules were also analyzed. The results indicate that appropriate increase in fineness of gypsum particles will improve the water-reducing efficiency of superplasticizers. And superplasticizers with different addition methods behave as a different way. Besides, the dispersion effect of superplasticizers is in the best when they are mixed into gypsum prior to adding the water and pH value also has the influence on the dispersion of superplasticizers which is in the best under weakly alkalescent environment.
机构地区 重庆大学建材系
出处 《混凝土与水泥制品》 2006年第2期8-10,共3页 China Concrete and Cement Products
基金 国家自然科学基金资助项目(50078055)
关键词 建筑石膏 高效减水剂 细度 掺法 PH值 Building gypsum Superplasticizers Fineness Addition method pH value
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参考文献6

  • 1Odler I,R??ler M.Relationships between pore structure and strength of set gypsum pastes,Part Ⅱ:Influence of chemical admixtures[J].Zement-Kalk-Gips,1989 (10):266-268
  • 2Koslowski TH,Ludwig U.The effect of admixtures in the production and application of building plasters[J].ZKG International,1999 (5):274-285
  • 3陈健中.建筑石膏专用减水增强剂的研究与应用[J].新型建筑材料,1995,22(2):15-17. 被引量:7
  • 4Peng Jiahui,Qu Jindong,Zhang Jianxin,Chen Mingfeng,Wan Tizhi.Adsorption characteristics of water-reducing agents on gypsum surface and its effect on the rheology of gypsum plaster[J].Cement and Concrete Research,2005,35:527-531
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二级参考文献4

  • 1[1]ODLER I, ROBLER M. Relationships between pore structure and strength of set gypsum pastes, Part Ⅱ: Influence of chemical admixtures [J]. Zem Kalk Gips, 1989 (10):266-268.
  • 2[2]KOSLOWSKI TH, LUDWIG U. The effect of admixtures in the production and application of building plasters [J]. ZKG Int, 1999, 52(5): 274-285.
  • 3[3]COLLEPARDI M. Admixture used to enhance placing characteristics of concrete [J]. Cem Concr Compos, 1998, 20:103-112.
  • 4[6]HANEHARA S, YAMADA K. Interaction between cement and chemical admixture from the point of cement hydration,adsorption behavior of admixture, and paste rheology [J].Cem Concr Res, 1999 (29): 1 159-1 165.

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