英语翻译Based on the analysis of the chemical structure of polycarboxylate-type superplasticizers with polyoxyethylene (PEO) side chains,thedispersing properties for cement particles were investigated.Analyzed characteristics were the PEO side ch

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英语翻译Based on the analysis of the chemical structure of polycarboxylate-type superplasticizers with polyoxyethylene (PEO) side chains,thedispersing properties for cement particles were investigated.Analyzed characteristics were the PEO side ch
英语翻译
Based on the analysis of the chemical structure of polycarboxylate-type superplasticizers with polyoxyethylene (PEO) side chains,the
dispersing properties for cement particles were investigated.Analyzed characteristics were the PEO side chain length,the degree of backbone polymerization,the composition of functional groups such as carboxylic and sulfonic groups,and the purity of polymers.Their relative effectiveness as dispersants was evaluated in cement paste by measuring paste flow,plastic viscosity,and shear yield stress at different water/cement ratios (w/c).Although the effects of chemical structure on the paste fluidity were not significant at high w/c,they became significant at w/c below 25%.Polymers with longer PEO side chains,lower degrees of backbone polymerization,and higher contents of sulfonic groups showed higher dispersing power.Higher concentrations of ionic functional groups in the aqueous phase delayed the setting of cement paste.

英语翻译Based on the analysis of the chemical structure of polycarboxylate-type superplasticizers with polyoxyethylene (PEO) side chains,thedispersing properties for cement particles were investigated.Analyzed characteristics were the PEO side ch
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依据对带有聚氧化乙烯(PEO)支链的聚羧酸锌型超增塑剂的化学结构的分析,对水泥粉粒的扩散性能进行了研究.主要分析的特性为：聚氧化乙烯(PEO)支链的长度,主链聚合的程度,各功能组如羧基组和磺酸基组的成分以及聚合物的纯洁度.通过对在不同水/水泥(w/c)比率条件下测量水泥浆流动,塑性粘度和剪切屈服强度,来对它们在水泥浆中的作为扩散剂的相对有效性进行评估.尽管在高水/水泥(w/c)比率下,化学成分对水泥浆的流动性并不显著,但在水/水泥(w/c)比率低于25%时就相当显著.带有更长聚氧化乙烯(PEO)支链的聚合物,主链聚合程度更低及更高磺酸基物的组显示出更高的扩散能力.水相中更高浓度的离子功能组延缓了水泥浆的凝固.

基于对羧酸的化学结构分析与乙烯型高效减水剂（PEO）的侧链的
水泥颗粒的分散性能进行了研究。分析特色是乙烯侧链长度，骨干聚合程度，如羧酸和磺酸基官能团的组成，以及聚合物的纯洁性。它们的相对效力分散在水泥浆体评价测量不同水/水泥比（瓦特/三）粘贴流，塑料粘度和剪切屈服应力。虽然粘贴流动性的化学结构效应并不明显高瓦特/荤，他们成为重要的瓦特/荤低于25％。乙烯较长侧链的聚合物，骨干聚合度较低...

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