三聚磷酸钠是建筑石膏高效缓凝剂。
Sodium tripolyphosphate (STPP) is a highly efficient retardant, and is commonly used in building gypsum.
脱硫石膏作水泥缓凝剂必须低温烘干。
The FGD gypsum should be dried at low temperature for the use of cement retarder.
本文对S型石膏缓凝剂的性能进行了研究。
In this paper, the study on the performance of s type retarder of plaster was made.
为了控制其凝结时间，需加入2%的缓凝剂。
In order to control its coagulation time, 2% retarder should be added.
缓凝剂的缓凝效果，受环境温度的影响十分明显。
Circumstance temperature influences the function of retarder for concrete apperantly.
SEM图像表明，掺超缓凝剂的水泥硬化结构更加致密。
SEM photographs indicate that the microstructure of hardening cement with super-retarding agent is more compact.
热电厂脱硫石膏与天然二水石膏相似，适合作水泥缓凝剂。
The FGD gypsum similar to the natural gypsum in common characteristics, and is adequately used as cement retarder.
混凝土超缓凝剂技术是当今混凝土技术的一个新的研究方向。
The technology of super concrete retarder is a new research interest in concrete technology.
混凝土搅拌机，配料机，缓凝土泵，液压布料机，沥青搅拌站。
Concrete mixer, ingredients machines, slow setting soil pumps, hydraulic machine fabrics, asphalt mixing plant.
在延迟成型时间较长时，SRA起到的缓凝作用比木钙更明显。
The SRA has better effect than lignosulphonate calcium as the forming retarded time is longer.
研究了数种缓凝剂对碱碳酸盐矿-矿渣灌浆材料工作性能的影响。
The effect of some setting retarders on the workability of alkali-activated carbonatite-slag grouting material(AACSGM for short) was investigated.
研究结果表明：用化工石膏作缓凝剂，水泥性能符合国家标准规定。
Results show that, as the chemical gypsum was used as retarder, the cement properties can meet the requirements of the national standard.
缓凝剂对晶面的选择性吸附，改变了二水石膏晶体的生长习性和形貌。
The preferred adsorption of retarders on different faces of gypsum crystal changes growth habit of dihydrate crystal and its crystal morphology.
研究了使用双快水泥和缓凝剂配制混凝土的凝结硬化性能和强度性能。
This paper studied the setting and hardening property and strength property of concrete prepared by fast setting and hardening cement and retarding admixture.
建筑石膏中掺入S型缓凝剂可使凝结时间显著延缓，但强度略有降低。
When the s type retarder is added to the plaster, the setting time of plaster is delayed significantly and the strength is a little lower.
掺加柠檬酸对石膏具有明显的缓凝作用，但同时使制品的力学性能降低。
Besides, this result indicates that addition of citric acid has an obvious setting retarding effect on gypsum but may reduce the mechanical performance of its products.
考察各种缓凝剂对建筑石膏凝结时间、硬化体强度以及结晶习性的影响。
The effect of retarder on setting time, strength of hardened paste and crystallization habit of building gypsum was studied.
提出配置缓凝型减水剂应综合考虑缓凝时间要求、坍落度损失和水泥品种。
It proposed that considerations on retarding time, slump loss and cement kinds are important for retarding plasticizer matching.
对凝结非常迅速而不利于施工的半水石膏而言，杂质的缓凝具有利用价值。
The fast setting of most building gypsum is unfavourable for construction. So the retarding effect of impurities can be utilized positively.
为此，研制了一种在一定温度范围内对温度不太敏感的宽温带缓凝剂AS。
In this paper, a wideband retarder AS was developed which is insensitive to temperature within a certain temperature range.
对缓凝剂进行试验和分析，并配置缓凝型减水剂，对混凝土的性能进行分析。
Experiment and analysis were set for retarder, and retarding plasticizers were matched to analyze the concrete performance.
实验分析了不同电压、不同水泥品种、缓凝剂对电渗滤水混凝土性能的影响。
The experimental results indicate that ZnO retarder can increase the filtering velocity markedly, which ensures the strength and durability of filtering concrete effectively.
揭示了缓凝剂对建筑石膏水化进程、晶体形貌和孔结构的影响规律和作用机制。
The effecting law and action mechanism of retarders on hydration process of building gypsum, crystal morphology of dihydrate and pore structure have also been revealed.
缓凝剂在二水石膏晶胚表面的吸附，使其晶体生长受阻，成为水化的控制过程。
The adsorption of retarders on the surface of nuclei newly produced inhibits the crystal growth of dihydrate and accordingly controls the hydration process of gypsum.
在水泥中加入磷石膏做缓凝剂，对凝结时间影响较大，但对强度影响不太明显；
Phosphorous gypsum makes cement condensation time prolonged, while give no evidence influence on cement strength.
试验结果表明，复合使用高效减水剂和缓凝剂，能有效控制混凝土坍落度经时损失。
Experiment results showed that compound use of efficient water-reducing admixture and retarding agent can efficiently control the pumped concrete slump loses through time.
综述了磷酸镁骨水泥的合成工艺、理化特性、反应机理、缓凝机理及水化产物组成。
In this paper, the research on MPC is reviewed involving its preparation, physicochemical properties, hydration product components and mechanism of reaction and retarding.
综述了磷酸镁骨水泥的合成工艺、理化特性、反应机理、缓凝机理及水化产物组成。
In this paper, the research on MPC is reviewed involving its preparation, physicochemical properties, hydration product components and mechanism of reaction and retarding.
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