緩凝劑 的英文怎麼說
中文拼音 [huǎnníngjì]
緩凝劑
英文
cement retarder-
The expansion agents can only make up the shrinkage to some extent, and the compensation effects would be reduced when the retardener and fly - ash are used. the expansion agents are not panaceas to avoid the shrinkage cracking as expansion can also reduce the concrete soundness. under bad curing condition, the polypropylene fibrillated film fiber can improve concrete ' s anti - crarking property, while the nominal steels have very unobvious effects. to reduce the concrete shrinkage thus avoid the cracking, the former factors must all be taken into account in concrete proportion design to develop sound concrete
研究結果表明，水泥的品種和用量是影響混凝土收縮值的主要因素之一，當混凝土中水泥用量超過470kg / m ~ 3時，混凝土的收縮值超過400 10 ~ （ - 6 ） ，在約束狀態下存在高開裂風險；採用細砂使混凝土單位用水量顯著提高，收縮值也大幅增加；優質粉煤灰總體上能抑制混凝土的收縮，以超量方式摻入其抑制作用更加明顯，但粉煤灰混凝土早期的粘聚性較差，應注意養護，以免失水產生龜裂；早強減水劑和緩凝減水劑都會使混凝土收縮值增加；膨脹劑只能補償混凝土部分收縮，同時受緩凝劑和粉煤灰的抑制，而且膨脹使混凝土的體積安定性增加了不確定因素，膨脹劑不是解決混凝土收縮裂縫的良方。Hi this thesis, the setting time of various retarders had been tested, in which three retarders with good retarding action, citric acid, sodium tripolyphosphate, bone glue are respectively chosen from three types of retarders, hydroxyl carboxylic acid type, phosphate type and protein type, and the strength and setting time of gypsum added with them are determined. effect of some factors, such as ph value, fineness of hemihydrate, type of gypsum on the retarding action of the retarders is also studied
本文對多種緩凝劑進行凝結時間測試，選擇效果良好的羥基羧酸、無機鹽和蛋白質類型的三種緩凝劑：檸檬酸、多聚磷酸鈉和骨膠，測定它們對石膏凝結時間、強度等宏觀性能的影響，並分別研究ph值、石膏細度和石膏種類等因素對它們的緩凝效果的影響。Gypsum for portland cement retarder
硅酸鹽水泥緩凝劑用石膏Research on retarder available for alkali activated carbonatite - slag cementitious material
礦渣膠凝材料的緩凝劑研究There is some about that retarders or retarding plasticisers really alter the total heat output or, for that matter, the rate of heat generation.
無疑地，緩凝劑或緩凝塑化劑確實改變了點總放熱量或放熱速度。Results of experiment show that the reason of strength decreasing of gypsum added with retarders is that the retarders reduce the supersaturation of liquid phase, and makes the crystal grain largen, and pore is followed to worsen, which lead to the strength drop to a large degree
實驗結果分析表明：在摻加緩凝劑后石膏硬化體強度下降的原因在於緩凝劑降低了石膏的液相過飽和度，使結晶顆粒變大，使石膏的孔結構惡化，最終導致了宏觀強度大幅度下降。The effects of various set - retarders on strength of concrete are different. 28 - day strength of concrete decrease in different degree with amount of ca - lignosulphonate, ca - solassate and sucrose increase
常用緩凝劑對混凝土強度的影響差異較大，木鈣、糖鈣和蔗糖摻量過大，混凝土28d強度都有不同程度的下降。Some retarders permanently weaken the concrete.
某些緩凝劑對混凝土起長期的弱化作用。Standard practice for selection of water vapor retarders for thermal insulation
熱絕緣用水蒸氣緩凝劑選擇的標準實施規程Selection of suitable retarding agent and its addition is particularly important for controlling the setting time of gypsum - based material in a certain rang, meeting the requirement of construction process. though the retarder is widely used, the influence factor, the intrinsic reason that induces the strength drop and retarding mechanism are still studied superficially
盡管石膏緩凝劑的用途廣泛，但是對於它的影響因素、緩凝劑強度降低的內在原因和緩凝劑阻礙石膏水化形成緩凝作用的機理的研究粗淺，認識模糊。Furthermore, by testing the supersaturation of liquid phase, hydration rate, hydration temperature as hydration of gypsum with the retarders, the effect of retarders on the hydration process is found out
通過對摻加緩凝劑后對石膏水化過程中的液相過飽和度、水化率和水化溫度的測試，了解緩凝劑對石膏水化進程的影響。Research the application of titanium white residue as set retarder in cement
鈦白渣作水泥緩凝劑的應用研究The paper studies on the principal technologies on coal desulfurization and retardant mechanism of cement retarder and active mechanism of cement mixed material
摘要介紹了煤炭脫硫產物和它們作水泥緩凝劑、水泥混合材的研究。As a kind of cement retarder, normal setting time and good effect for mechanical properties and soundness of cement can be got when adding desulfurization gypsum in cement, so it can used instead of natural gypsum to produce cement entirely, coal gangue is activated and coal ash desulfurized have good active, can improve cement output and also can depress consumption when them be used as mixed material, have well economic and environmental effects
脫硫石膏作水泥緩凝劑時，水泥的安定性、凝結時間正常，可改善水泥的力學性能，完全可替代天然石膏；活化后的煤矸石和脫硫煤灰具有較好的活性，用作水泥混合材可增加水泥產量、降低生產成本，具有良好的經濟和環境效益。The scanning electron micrographs and the data of pore structure of gypsum and gypsum with the retarders also make us known the influence of retarders on the crystal morphology and pore structure, from which transformation of microstructure induced by retarders and the reason of which makes the strength drop a re analyzed. combined with the xps spectrum, the mechanism of action with the retarders are finally proposed
繼而通過對孔結構和石膏硬化體晶體掃描電鏡照片的觀測，獲得緩凝劑對石膏硬化體晶體形貌的影響和對孔結構的改變的信息，分析緩凝劑的帶來石膏的微結構的變化，以及摻加緩凝劑帶來石膏強度下降的原因所在。Standard test method for thermal integrity of flexible water vapor retarders
撓性水蒸汽緩凝劑熱完整性標準試驗方法Effects of wh super set - retarding agent on hydration proceeding of portland cement
型超緩凝劑對硅酸鹽水泥水化過程的影響Standard test method for elevated temperature and humidity resistance of vapor retarders for insulation
隔熱用蒸汽緩凝劑耐高溫和耐濕度性能標準試驗方法To concrete, the setting time of concrete extends with amount of set - retarders increase
對混凝土而言，常用緩凝劑隨摻量增大，混凝土凝結時間顯著延長。The influence of retarder on the seaing time and ultimate strength of gypsum plaster was investigated in this paper. the experimental results indicate that the effect of single retarder, such as citric acid, is inferior to that of composite retarder which was made of blending citric acid with a few portland cement ( about 0. 5 ?, by weight ). the effect of different water - retention agents, such as polyvinyl alcohol ( pva ), carboxymethyl cellulose ( cmc ), and na - bentonite, etc., was also studied, and the results demonstrate that by means of adding organic and inorganic water - retention agent simultaneously the water - retention of plastering slurry can obviously be improved. the optimal mix proportion of gypsum plaster suitable to finish coat of walls and ceilings of buildings has been got by use of factorial experiment with orthogonal array accounting for interactions between factors each other
研究了分別以檸檬酸、檸檬酸與普通硅酸鹽水泥復合物作緩凝劑，調節粉刷石膏的凝結時間，並對比2種緩凝體系對石膏抗折、抗壓強度的影響.比較不同保水劑（聚乙烯醇、羧甲基纖維素）以及相同量的保水劑在不同工藝流程下保水效果上的區別.探索了有機保水劑和無機保水劑對粉刷石膏的保水性的影響.結果表明，檸檬酸與普通硅酸鹽水泥的復合緩凝劑比單純的檸檬酸更能有效地延緩建築石膏的凝結，同時建築石膏的抗折、抗壓強度降低幅度減小分享友人