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additive for cement
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  “additive for cement”译为未确定词的双语例句
     Analyses on the Toughening and Crack Arrest Effects, Mechanisms of Microcrystal Additive for Cement Stabilized Soil
     微晶添加剂的增韧止裂效应及其机理分析
短句来源
     With the field test of some wells, the optimlzation of types and dosages of filtrate loss reduction additive for cement slurry is beneficial for improving cementing quality.
     经数十口井试验,只要采取优选水泥浆降失水剂的类型和剂量的措施,对提高固井质量十分有效。
短句来源
     The high efficient building mortar additive SG series is a new additive for cement mortar mixture. It not only can improve workability and water-retaining property of building mortar, but also can obviously increase every property index of mortar.
     S G 系列高效建筑砂浆外加剂是一种新型的水泥砂浆拌合物外加剂,掺入后不仅能改善建筑砂浆的和易性和保水性,而且能明显提高砂浆的各项性能指标。
短句来源
     With high dispersity and high activity, silica fume is a specific additive for cement and concrete, capable of distinctly improving the performance of concrete and upgrading the strength of concrete.
     作为高分散度和高活性材料,硅粉是一种特效的水泥、混凝土掺合料,它能明显地改善混凝土的性能,提高混凝土的强度。
短句来源
     High range mortar plasticizer is a new special additive for cement mortar. Its addition can not only obviously improve performance of fresh mortar but also increase performance of hardened mortar.
     高效砂浆塑化剂是一种新型的水泥砂浆专用外加剂,掺入后不仅能明显改善新拌砂浆性能,而且能提高硬化砂浆的性能。
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  相似匹配句对
     CEMENT WATERPROOF ADDITIVE
     水泥防水添加剂的研制
短句来源
     Research on cement additive
     水泥助磨剂的研究
短句来源
     the carbonation of cement;
     水泥的碳化反应;
短句来源
     cement 350;
     水泥 3 5 0 ;
短句来源
     The additive of concrete
     浅谈混凝土外加剂
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  additive for cement
Currently, the biggest market for fly ash is in concrete applications as an additive for cement.
      


The concentration of two additives for cement sturries, naphthalene sulfonic acid/formaldehyde condensation product, FDN, and calcium lignosulfonate, CLS,in their mixed solutions are determined UV-spectrometrically by a special procedure. At all temperatures studied the amounts of apparent adsorption of FDN on grade G cement, both from singular and mixed solutions, are found to be greater than that of CLS under the same conditions. In all cases the amounts of apparent adsorption of these chemicals...

The concentration of two additives for cement sturries, naphthalene sulfonic acid/formaldehyde condensation product, FDN, and calcium lignosulfonate, CLS,in their mixed solutions are determined UV-spectrometrically by a special procedure. At all temperatures studied the amounts of apparent adsorption of FDN on grade G cement, both from singular and mixed solutions, are found to be greater than that of CLS under the same conditions. In all cases the amounts of apparent adsorption of these chemicals are shown to decrease with increasing temperature, although more rapid decrease is observed for CLS from singular solution at higher temperatures.

本文建立了用紫外分光光度法测定混合溶液中FDN和CLS浓度的方法,利用该方法研究了FDN和CLS在G级水泥上的竞争吸附。FDN从单一和混合溶液中的表观吸附量均大于CLS。温度升高时FDN和CLS的表观吸附量均下降。

The possibility of using silk glue as additive for cement slurries is studied ceperimentally. Separated from waste degluing solutions in silk textile factories in simple ways,silk glue is a colorless to yellowish solid substance in powdered form,which is readily soluble in water. Introducing a few thousands of silk glue into slurries of cement of grade G and 75℃ greatly enlarges their setting-up times and decreases their fluid losses,their rheological behavior is also improved,even in the presence...

The possibility of using silk glue as additive for cement slurries is studied ceperimentally. Separated from waste degluing solutions in silk textile factories in simple ways,silk glue is a colorless to yellowish solid substance in powdered form,which is readily soluble in water. Introducing a few thousands of silk glue into slurries of cement of grade G and 75℃ greatly enlarges their setting-up times and decreases their fluid losses,their rheological behavior is also improved,even in the presence of CaCl_2 Combinations of silk glue with synthetic polymer additives such as Lw-J give good results in increasing setting-up times of slurries.

本文采用室内评价方式,探索了丝胶作为固井水泥浆外加剂的可行性。丝胶对固井水泥浆失水有良好的控制作用,常温、7大气压30分钟的失水可控制为6毫升。丝胶有强烈的缓凝性,水浴中养护凝结时间达10小时以上。丝胶也能改善水泥浆的流动性能。

Generally the cementing of adjustment well is of bad quality because longterm water injection made the formation pressure, temperature and heat absorption environment of cement slurry change. The characteristics of cementing technology determined that the highest point of temperature of cement slurry that returned to the annulus was in the certain distance away from the bottomhole instead of bottomhole reservoirs. The cement slurry with higher temperature had priorlty to enter the initial setting period and...

Generally the cementing of adjustment well is of bad quality because longterm water injection made the formation pressure, temperature and heat absorption environment of cement slurry change. The characteristics of cementing technology determined that the highest point of temperature of cement slurry that returned to the annulus was in the certain distance away from the bottomhole instead of bottomhole reservoirs. The cement slurry with higher temperature had priorlty to enter the initial setting period and began to loss weight after returning to the annulus. Thls made the lower cement slurry without being solidified absorbed into fluid from higher pressure formation and began to discharge into the lower pressure formation,, it was defined as "fluid loss and suction with inverted sequence"for cement slurry. So the cementing of slurry is always from bad quality. This paper analyzed the reason for "fluid loss and suction with inverted sequence" and gave precautions.With the field test of some wells, the optimlzation of types and dosages of filtrate loss reduction additive for cement slurry is beneficial for improving cementing quality.

调整井固井质量往往不高,这是由于长期大量的注水采油,使地层压力、温度和水泥浆的吸热环境发生了变化。再由于固井工艺的特点,决定了返至环空水泥浆的温度最高点不在井底油层段,而在距井底一定距离的地方。返至环空后,温度高的水泥浆优先进入初凝期,并开始失重,使下部未凝固的水泥浆吸纳较高压力地层的流体,同时加速向低压层失水,这就是水泥浆的“异位吞吐”,结果使水泥浆固井质量不高。文中分析了水泥浆“异位吞吐”的原因,并提出了预防措施。经数十口井试验,只要采取优选水泥浆降失水剂的类型和剂量的措施,对提高固井质量十分有效。

 
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