Superplasticizer相关论文
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The effects of two types of superplasticizers on the properties of CSA cement pastes during early hydration were studied......
Influence of Superplasticizers on Early Age Drying Shrinkage of Cement Paste with the Same Consisten
The influence of superplasticizer (SP) on the early age drying shrinkage of cement paste with the same consistency was i......
Influence of Superplasticizer Type and Dosage on Early-age Drying Shrinkage of Cement Paste with Con
We introduced a parameter rs (the radius of the pores where the meniscus forms), which is composed of two factors, i e, ......
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Synthesis of Super Plasticizer NF-30 from Coal Coking by Product Washing Oil and Performance Analysi
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A microrheology analyzer (Rheolaser LAB6TM) was adapted to in-situ follow the development of the viscoelastic properties......
In this work we address the feasibility of in silico studies of the influence of superplasticizers on the microevolution......
The production and use of efficient blended cements is state-of-the-art.Besides numerous technical advantages,these ceme......
Study on Influence of the Cement Grinding Aid on the Compatibility of Cement-Superplasticizer System
The changes of free water amount,rheological properties and electrokinetics of cement paste were examined by varying sup......
Study on Synthesis of Polycarboxylate Superplasticizer with Bulk Polymerization Process and Its Prop
In order to achieve rapid transportation and convenient preparation,the polycarboxylate superplasticizer(PCE)was synthes......
Viscosity enhancing admixtures (VEA) are often used in combination with superplasticizer (SP) in cement-based materials ......
Comb-like copolymers as polycarboxylate ether (PCE) are added to concrete to make it more fluid and facilitate its place......
Superplasticizers and retarders are essential in the production of many cementitious materials.While superplasticizers e......
Synthesis and Performance Characterization of a Low Adsorption Clay-resistant Polycarboxylate Superp
A low adsorption clay-resistant polycarboxylate superplasticizer(KN-PC)was synthesized using acrylic acid and isopenteno......
Chemical admixture is very useful for higher performance of concrete and production of high fluidity concrete and hi......
China is abundant in natural anhydrite which should be rationally and effectively developed and used.Self-leveling m......
Since their invention in 1981, polycarboxylate ether (PCE) polymers have attained a considerable share of the concre......
In Japan, advanced superplasticizers that exhibit excellent slump (fluidity) retention,viscosity control and air ent......
The relationship between the structure and performance of polycarboxylate superplasticizer was analyzed.The respective f......
An experimental study for optimization of high range water reducing superplasticizer in self compact
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Coupled effect of viscosity enhancing admixtures and superplasticizers on rheological behavior of ce
The coupled effect of viscosity enhancing admixtures (VEA) and superplasticizer (SP) on the rheological behavior of ceme......
Hyperbolic Method to Analyze the Electrical Resistivity Curve of Portland Cements with Superplastici
Electrical measurement was employed to investigate the early hydration characteristics of cement pastes with different d......
Free radical co-polymerization was employed to synthesize co-poly carboxylate (PC) superplasticizers with different amou......
The chemical structures of four types of superplasticizers (SPs) and their adsorptive behaviors on β-C2S were investiga......
Using water separation technique,acrylic acid (AA) and polyethylene glycol (PEG) 1000,of which the ratio was 1.5,were es......
研究了吸附溶液体系温度、pH值和电解质浓度等对甲基丙烯酸-甲氧基聚乙二醇甲基丙烯酸酯(MAA-MPEGMA)梳形聚羧酸共聚物在水泥颗粒......
根据试验所得的数据,对同标号基准砼和高性能砼的性能进行对比,论证了在基准砼中掺加粉煤灰和高效减水剂的作用,对粉煤灰的最佳掺......
为了提高混凝土的早期抗裂性能，使用了不同种类的减水剂．采用平板法和温度应力试验法，研究了2种不同分子结构的聚羧酸减水剂和1种缓凝......
用廉价的草浆碱木素和萘等为原料合成新型萘系减水剂。通过正交实验，确定合成新型萘系减水剂的适宜工艺条件为：β-萘磺酸与草浆碱木......
介绍了高性能混凝土应具有的性能，在我国应开发和推广的高性能混凝土，超塑化剂的应用，以及使用超塑化剂配制高性能混凝土时应掌握的技......
文章论述一种对粘土具有高适应性的新型接枝共聚物超塑化剂的研究与开发,其减水率可达30%以上,并且具有极佳的保坍效果。通过增加......
三山岛金矿地质水文条件特殊,测得充填用水中富含盐卤离子,对料浆自流输送造成不利影响。本研究探索使用高效减水剂改善含盐卤料浆......
研究了低苯酚和甲醛残留的氨基磺酸系高效减水剂（ASP）的合成工艺，通过IR和GPC研究了其结构、分子量及分布。结果表明：反应物配比、时间......
采用分子设计方法合成了含短侧链聚醚基团共聚羧酸(CoPoCa-Ⅱ )外加剂,与萘磺酸甲醛缩合物复配得到一系列新的复合型高效减水剂,降......
概述了高效减水剂及其主要类型和在水工混凝土中的应用现状.对国内外仍广泛应用的萘系高效减水剂,氨基磺酸盐系、聚羧酸系等新型高......
研究了以丙烯酸、丙烯基磺酸钠、聚氧乙烯基烯丙酯等单体为主要原料的聚羧酸类高效减水剂的制备工艺,对影响产物分散性的几个因素......
研究了聚羧酸系减水剂与萘系减水剂在水泥-水体系中的吸附情况,以及两种减水剂复合后对体系ζ电位的影响.试验结果表明,聚羧酸系减......
通过试验，研究了两种新型高效减水剂与水泥和3种矿物掺合料的相容性，并就矿物掺合料的合理掺量和复合使用问题进行了初步讨论．......
合成出一类含多种侧链官能团的共聚羧酸高效减水剂(CoPoCa-Ⅲ ).这类共聚物分子中带有羧酸及其盐,磺酸及其盐,羟基,酯基及醚基等.......
通过分子设计,研制出一类带有长侧链聚醚基团、羧酸基团、磺酸基团、羧酸酯基团的共聚羧酸高效减水剂(CoPoCa-Ⅰ).这类高效减水剂......
研究了以丙烯酰胺、聚乙二醇系列、丙烯酸、顺酐、烯丙基磺酸钠、丙烯酸羟乙酯为原料合成的XYZ聚羧酸系减水剂对净浆水泥性能及混......
Free radical co-polymerization was employed to synthesize co-poly carboxylate (PC) superplasticizers with different amou......
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以纯碱替代氢氧化钠，同时采用双氧水作氧化剂，成功研制了一种新型氨基磺酸系高效减水剂（HP）。红外光谱和核磁共振分析表明，HP分子结构中......
根据分子结构设计原理，合成了一种改进型聚丙烯酸系高效减水剂（PC—C），对影响减水剂性能的几个关键因素进行了探讨，并用红外光谱表征了......
提出了一系列表征混凝土高效减水剂的方法，通过对表面张力，活性吻含量，附量和ζ电位的测定，从微观上研究了高效水剂的作用机理，分析了造......
