Serials of naphthalin and tripolycyanamide have low water reducing efficiency.
萘系与三聚氰胺系减水率较低。
Product reached the level of common water reducing agent.
改性物的减水性能达到普通减水剂的标准。
The shrinkage of the base decreases by the proper dosage water reducing agent.
适宜用量的减水剂降低了基层材料的收缩量。
Summer is used, can inhibit the slump loss, generally is used with high efficiency water reducing agent.
夏季使用，可抑制坍落度损失，一般与高效减水剂复配使用。
Preparation, formula and properties testing were introduced for HMS series high range water reducing agent.
介绍了HMS型系列高效减水剂的制备方法、配方、以及性能测试。
The lignosulfonate water reducing agent was prepared via oxidation and sulfonation of wheat straw alkali lignin.
以麦草碱木素为原料，采用氧化磺化法，制备了磺化碱木素减水剂。
Main Types and performance of Amphipathic polymer in water reducing agent in Concrete in China were briefly introduced.
简述了国内混凝土减水剂用两亲性聚合物主要类型和性能及研究进展。
Naphthalene series of high range water reducing agents is a kind of an excellent water reducing admixture widely in use.
萘系高效减水剂是一种用途较广性能优越的高效减水剂。
And water reducing ratio of concrete is 25%, slump lose a little. Its every age compressive strength has increased obviously.
减水率达25%，坍落度损失低，各龄期混凝土抗压强度都有较大提高。
The effects of fly ash, water retention agent, re-dispersible latex powder and water reducing agent on performance of mortar were.
研究了粉煤灰、保水剂、可再分散乳胶粉、减水剂等对砂浆性能的影响，并探讨各种外加剂对砂浆的改性机理。
The descending of groundwater line due to soil water reducing was the main reason that resulted in the destruction and deadness of forests.
地下水埋深的持续下降导致土壤含水量降低是除人为破坏而引起林木自然衰败、死亡，并引起灌区自然生态安全水平降低的主要原因。
This text has introduced the synthetic method of the high performance water reducing agent of amino sulfonic acid and production application.
介绍了氨基磺酸系高性能减水剂的合成方法及生产应用。
High efficiency water reducing agent is a kind of additive agent, which can reduce mixing water greatly while maintaining unchanged landslide.
高效减水剂是指在保持混凝土坍落度基本相同的条件下能大幅度减少拌和用水量的外加剂。
When high flowing pump concrete of C60 is produced, more water and water reducing agent is used. So it often appears segregation and bleeding.
配制C60高流态泵送砼时，需要采用较大用水量和减水剂掺量，故拌合物常有离析和泌水趋势。
The results show that the modified lignosulfonate has a better water-reducing performance as effectively as high grade concrete water reducing agent.
结果表明，改性木质素磺酸盐具有较好的减水性能，且达到高效减水剂的减水性能。
The result shows this low slump loss superplasticizer features in easy action property, high water reducing rate, and good performance of concrete, etc.
结果表明：该产品减水剂具有优良的工作性能、高减水性、混凝土性能等特性。
It has high water reducing rate at low dosage whether the adaptability problem with cement and high slump loss are always the point in concrete production.
它具有掺量低、减水率高的优点，但与水泥适应性较差和坍落度损失大一直是混凝土生产上的难题。
Serials of naphthalin and tripolycyanamide have low water reducing efficiency, bad flow degree under low water cement ratio and sharp loss of concrete slump.
萘系与三聚氰胺系减水率较低，在低水灰比下流动性较差且坍落度损失较大，不利于商品混凝土的运输和施工。
Testing results for effects of high range water reducing agent on hydration temperature elevation, heat emission and strength of the concrete were presented.
介绍了高效减水剂对混凝土水化温度升高、放热率及强度影响的试验结果。
The PS water reducing agent, which is very effective for concrete, has been made from waste poly styrene(WPS) by sulfuric acid of fuming sulfuric acid sulfonation process.
以废聚苯乙烯（WPS）泡沫为原料，采用浓硫酸和发烟硫酸两种磺化方法制备性能良好的砼减水剂。
The author calculates the fractal dimensions and find the rule of fractal dimensions and cement specific surface area, cement paste fluidity as well as water reducing ratio.
分形特征与水泥宏观性质，如净浆流动度、比表面积、减水率之间存在较好的相关性。
Chemical structure, mechanism, performance characteristics of JM-PCA (I) carboxylic high range water reducing agent and its application in high performance concrete are presented.
本文介绍JM PC A (I)聚羧酸系高效减水剂的化学结构、作用机理、性能特点及其高性能混凝土的应用。
By adding different retarders, the water reducing effect is improved in varied degrees, which reflects the difference of its adaptability to naphthalene water-reducing agent and cement.
掺加不同种类的缓凝剂均不同程度促进高效减水剂提高减水作用，并且对减水作用的提高程度反映了该缓凝剂与萘系高效减水剂和水泥三者的适应性差别。
By addition of compound additives made of some cheap components, the production cost of melamine water reducing agent is greatly decreased so that the spread and application value increases.
通过掺入某些廉价组分制成复合型外加剂，使得三聚氰胺减水剂的生产成本大幅降低，从而提高其推广应用价值。
An air entraining high range water reducing agent was synthesized by way of oxidization and grafted - sulfonation of black liquor of reed pulp (sodium lignosulfonate) and its performance was studied.
通过对芦苇造纸黑液氧化、接枝磺化合成工艺，研制出具有引气性能的高效减水剂，并对其性能进行了研究。
When an ice age begins, the continental ice sheets grow, steadily reducing the amount of water evaporated from the ocean that will eventually return to it.
当冰河时代开始时，大陆上的冰原逐渐增大，从海洋中蒸发出来的水逐渐减少，而这些水最终又会回到陆地上。
It is thought that these grooves help to channel water through the mouth and out the gill slits, thereby reducing water resistance.
人们认为这些沟槽有助于将水从嘴中输送到鳃裂外，从而减少水的阻力。
Traditional water right trading between different users may bring third-party effects as reducing the instream flow of the intermediate stream and downstream.
不同用户之间的传统水权交易可能会带来第三方影响，因为这会减少中间流和下游的入流。
Impermeable clay limits downward percolation of water and fulvic acids, reducing chemical weathering and podzolization.
不可渗透的粘土限制了水和黄腐酸的向下渗透，从而减少了化学风化和土壤灰化作用。
Aminobenzenesulfonic acid super-plasticizer is selected though cement paste test, which be provided with high water-reducing property, low slump loss and good compatibility with cement.
通过水泥净浆试验比较选择了减水率高、坍落度损失小、与水泥适应性好的氨基苯磺酸盐高效减水剂；
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