緩凝減水劑 的英文怎麼說
中文拼音 [huǎnníngjiǎnshuǐjì]
緩凝減水劑
英文
water-reducing retaders-
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。Such methods as compounding retardants, compounding water - reducing agents ( which has various the extent of condensation ), changing the ways of addition and retardarce method, are used to impolder new water - reducing agent and construction method to salve slump loss, but it can not work drastically
通過復合緩凝組分、不同縮合度減水劑的復合、改變摻加方式、緩釋法等技術路線開發新型減水劑和施工方法來解決坍落度損失問題，但是這一問題並沒有得到根本解決。The new high effective water - reducing agent act - fdn has characteristic of reactivity, it ca n ' t dissolve in water but do in alklia. in the concrete, it decompounds slowly and gives out sulfonate group which has dispersity, this can make the high effective water - reducing agent available for a long time, therefore it can reduce slump loss
研製的新型高效減水劑act - fdn ，具有反應性的特點，不溶於水但溶於堿，在混凝土這樣的堿性環境下可以緩慢分解釋放出具有分散性能的陰離子磺酸基，使高效減水劑能夠持久發揮作用，從而達到了降低坍落度損失的目的。The effects of gypsum on fluidity of cement mortar and setting time of cement paste are not significant when it used as retarder of cement. whereas, when 0. 3 % ca - lignosulphonate or ca - solassate added in cement used anhydrite gypsum as retarder, loss of fluidity of cement mortar is rapid, quick setting is occurred
但是，在硬石膏調凝水泥中摻加0 . 3的木鈣和糖鈣緩凝減水劑卻能使水泥砂漿流動度經時損失加快，凈漿表現出促凝現象，發生外加劑與水泥的不相容問題。Application of scour and abrasion resisting high grade concrete mixed with silica powder and retarded water - reducing agent in zipingpu hydropower station
緩凝高效減水劑配製高標號抗沖耐磨混凝土在紫坪鋪電站中的應用The shrinkage reducing rate can reach to 70 % at the 7th day, and the shrinkage reducing rate can reach to 40 % at the 28th day. it doesn ’ t reduce the intension of the concrete. it can have an ability of 10 18 % of reducing water rate
通過對比試驗發現，聚丙烯酸鹽類減縮劑的最佳摻量為水泥質量的1 . 2 % ， 7天減縮率可達70 % ， 28天減縮率可達40 % ，且不降低混凝土的強度，具有10 18 %的減水率，有一定的緩凝作用。Abstract : based on composite testing of naphthalene superplasticizer and different retarders as well as retarding water reducer, in which the overall amount of admixture is certain, this paper analyzes the influence of these multicomponent admixtures on flowability of neat cement 、 retarding action and development of strength of colloidal mortar. the result shows that compatibilities of different components are different, and composition effects are also different
文摘:在總摻量一定的情況下，就萘磺酸鹽高效減水劑與不同緩凝組分、緩凝型減水劑等復合后對水泥凈漿流動度、緩凝作用、膠砂強度發展等性能的影響作用進行了試驗分析，結果表明各不同組份復合的相容性不同，復合效應也存在差別。We have successfully developed, researched and produced concrete expansion agent, high performance water - reducing agent, pump - sending agent, quick - coagulating water - reducing agent, high performance concrete mixing material, green environmental senior inner wall putty, pcc spring concrete waterproof coating and so on. our series products have gained high fame among our clients after being put into market
幾年來，經過我們的共同努力，我公司成功地開發研製生產了混凝土膨脹劑，高效減水劑緩凝減水劑泵送劑早強減水劑高性能混凝土摻合料綠色環保型高級內墻膩子粉和pcc彈性水泥防水塗料等20多個品種。Based on above, the characteristics of hydration hardening process and microstructure of hsc as well as the interfacial layer between cement paste and coarse aggregate are investigated under low water cement ratio, high content superplasticiser and with one kind or more than one kind of mineral materials condition, the reaction mechanisms of different mineral materials are also discussed
研究了不同水膠比、復合緩凝成分高效減水劑及礦物摻合料的摻加方式、摻量對高強混凝土水泥漿體水化放熱過程和水泥漿體的水化熱、水化放熱速率以及最高溫升的影響規律。探明了高強混凝土中水泥漿體的水化硬化過程、礦物摻合料之間的相互作用機理。Fnj 2 liquid retarded rapid hardening high efficient water reducing agent pump agent
Fnj 2液態緩凝高效減水劑泵送劑3 when fnj l is used in solution, if the crystal appears because of low temperature, we should make the crystal dissolving by reducing the solution concentration or heating before using. drying mixing is available to avoid unevenly mixing
本產品是由多種材料復合而成的復合型混凝土外加劑，主要由膨脹減水防凍早強緩凝和阻銹等組份組成。Act - fdn varies from common water - retaining plasticizers and complex water reducers ; it does n ' t contain compound retardants and has no bad influence on the early strength of concrete
因為act - fdn並沒有復合緩凝成分，它不同於一般的保塑劑或復合型減水劑，突出的特點是對混凝土的早期強度無不利影響。The best process of sulfomethylated poly ( maleic anhydride - co - acrylamide ) is also designed. by testing setting time and water reducing rate of water - reducing agent, we find that the water - reducing ratio of the monoesterified ma - am is 20 %, and the sulfomethylated ma - am is 6. 3 %. they both have good retarding performance
本文還對水泥標準稠度用水量與凝結時間進行測定，得出酯化改性的減水劑減水率達到20 ，磺甲基化改性的減水劑減水率為6 . 3 ，改性產物均有一定的緩凝性。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