expansive cement 中文意思是什麼

expansive cement 解釋
膨脹水泥
  • expansive : adj. 1. 易擴張的，膨脹性的。2. 遼闊的，浩瀚的。3. 胸襟開闊的，豁達的；滔滔不絕的。4. 豪華的。5. 【心理學】自大狂的；趾高氣揚的。adv. -ly ,-ness n.
  • cement : n 1 水泥。2 膠泥；膠合劑，接合劑，膠；【醫學】（牙科等用的）黏固粉。3 【解剖學】（牙齒的）白堊質...
  1. The result of experiment shows that und er the conditions of proper ai r - entraining, concrete with 20 % fly ash has excellent frost - resistance. the frost - resistance of concrete with 55 % fly - ash which is admixed with united expansive agent ( uea ) has been improved greatly. the frost - resistance of sulfate aluminate cement concrete with high volume of fly - ash is dramatically lower than that of silicate cement concrete with the same volume of fly - ash

    試驗結果表明：粉煤灰摻量為20的混凝土在適量引氣的條件下具有良好的抗鹽凍性能；粉煤灰摻量為55的混凝土在摻加uea膨脹劑后其抗鹽凍性能有明顯改善；大摻量粉煤灰硫鋁酸鹽水泥混凝土的抗鹽凍性大大低於同摻量的硅酸鹽水泥混凝土。
  2. If magnitude of expansive stress caused by adscititious magnesia is too large, or its distribution is not uniform, it trends to damage the structure of cement concrete, and then affect seriously dam durability

    如果氧化鎂混凝土膨脹量過大或不均，都將破壞水泥混凝土結構，影響耐久性，甚至局部崩裂造成安全事故。
  3. Methods for chemical analysis of alunite expansive cement

    明礬石膨脹水泥及化學分析方法
  4. Alunite expansive cement

    明礬石膨脹水泥
  5. Electroosmosis technology can solve the problem of high water cement ratio during construction and low water cement ratio during solidification effectively so that have expansive application prospect

    結論電滲濾水混凝土技術能有效地解決混凝土的大水灰質量比施工、小水灰質量比固化的矛盾，有重要學術價值和廣闊的應用前景。
  6. Standard specification for expansive hydraulic cement

    可膨脹的水硬性水泥標準規范
  7. Inorganic anti - cracking reinforced chemical additive, called wj, generates some tittle expansive crystals in hydration process in concrete to reduce the porosity and improve the distribution of pore size. the expansive power is process in common to tumefaction that petty crystalloid aft suck water and pressure to concrete pores that aft crystal gather volume. its adding weight was 8 % - - 12 % in cement, its restrained expansive ratio was about 0. 02 % - - 0. 06 %, and relevantil brought self - stress 0. 2mpa ?. 6mpa

    無機增強抗裂材料wj摻入普通混凝土中，在水化硬化過程中生成一定量的微膨脹結晶體，降低空隙率，改善混凝土中孔結構分佈。其膨脹驅動力是凝膠尺寸的晶體鈣礬石吸水腫脹和結晶狀鈣礬石對孔隙產生膨脹壓的共同作用。當wj摻量為8一12兒在鋼筋和鄰位的限制下，使混凝土產生0
  8. Abstract : the result of experiment shows that und er the conditions of proper ai r - entraining, concrete with 20 % fly ash has excellent frost - resistance. the frost - resistance of concrete with 55 % fly - ash which is admixed with united expansive agent ( uea ) has been improved greatly. the frost - resistance of sulfate aluminate cement concrete with high volume of fly - ash is dramatically lower than that of silicate cement concrete with the same volume of fly - ash

    文摘:試驗結果表明：粉煤灰摻量為20的混凝土在適量引氣的條件下具有良好的抗鹽凍性能；粉煤灰摻量為55的混凝土在摻加uea膨脹劑后其抗鹽凍性能有明顯改善；大摻量粉煤灰硫鋁酸鹽水泥混凝土的抗鹽凍性大大低於同摻量的硅酸鹽水泥混凝土。
  9. After bfs is put into high strength superplasticized expansive concrete ( substituted for cement ), autogenous shrinkage does n ' t appear in 1 day standard curing, and e2 in 14 day ' s age is higher than that of high strength superplasticized expansive concrete without bfs in the same age

    高強流態膨脹混凝土摻入磨細礦渣（等量替代水泥）后，標準養護1天未出現自收縮， 14天的限制膨脹率明顯高於未摻磨細礦渣的高強流態膨脹混凝土的對應值。
  10. Shrinkage of cement - based materials and the shrinkage - compensating effect of expansive agents

    水泥基材料的收縮與膨脹劑收縮補償作用探討
  11. Standard test method for restrained expansion of expansive cement mortar

    膨脹性水泥灰漿的限制膨脹標準試驗方法
  12. The expansive characteristics of new mgo - based expansive materials and the compensating shrinkage of cement paste with high c3s content were investigated

    摘要主要研究了新型鎂質膨脹材料對高c3s含量（質量分數為64 . 4 % ）水泥漿體收縮的補償作用。
  13. The result of macro - quality experiments show : mineral admixtures markedly slow the hydrating velocity of cement slurry, decrease and delay the hydrating max - temperature, in which steel slag is more effective ; expansive agents compensate concrete shrinkage, enhance the concrete dense degree, strengthen the interfacial layer between fiber and cement matrix and improve the physical mechanics qualities of acic ; minimal admixtures markedly improve the concrete workability property, increase the concrete later intensity & density and the capability of anti - chemical attack and anti - permeability ; hybrid fiber reinforces the toughness of obviously acic by the means of anti - cracking effect of fiber with different sizes and different properties in the corresponding construction levels

    實驗結果顯示：鋼渣摻合料能顯著減緩水泥漿體水化速率，降低砂漿的水化溫升並延遲最高溫升時間；補償混凝土收縮，提高混凝土密實度，加強纖維與水泥石的界面粘結，增強混凝土力學性能，但不能明顯改善混凝土韌性。混雜纖維通過纖維的不同尺度與不同性質在相應的結構層次上產生阻裂效應，增韌鋼渣防滲抗裂混凝土；增加混凝土的破壞極限能，極大提高混凝土抗彎曲能力和韌性指數，改善混凝土脆性。
  14. The results show that the shrinkage of cement paste can be compensated by the new mgo - based expansive materials well, only if the burning temperature and burning time of expansive material are controlled and the dosage of expansive material in cement is suitable according to the hydration temperature and with fly ash or not

    結果表明，根據一定條件下（如養護溫度、摻加粉煤灰等）水泥漿體的收縮特性來調整膨脹材料的煅燒溫度和煅燒時間，控制合理的摻加量，新型鎂質膨脹材料可以有效地補償水泥漿體的收縮。
  15. Low heat expansive cement

    低熱微膨脹水泥
  16. In this paper evaluating standards for cement and concrete in china and abroad are reviewed, and expansive behaviors of various micro - expansive concrete, added with various content of magnesia ( mgo ) and fly - ash ( pfa ) and autoclaved under different autoclaving condition, are studied

    本文的主要研究成果如下： 1在其它條件不變的情況下，外摻氧化鎂混凝土的壓蒸膨脹率隨著壓蒸溫度的升高而增大，但增幅隨之而減緩。
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