expansive concrete 中文意思是什麼
expansive concrete
解釋
膨脹混凝土-
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。 -
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。 -
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 -
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。 -
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。 -
The long - term property of steel fiber self - stressing concrete is studied. the results indicate that this material has a good long - term stability. the expansive deformation of 5 years is equal to 90 days, which eliminat
研究表明，鋼纖維自應力混凝土的長期性能是可以保證的，其五年齡期時的變形與三個月齡期變形相當。 -
The effects of mineral additive such as fly ash, slag, and dura fiber on concrete expansive property are studied, the results show that these mineral admixture reduce shrinkage in common concrete and also reduce expansive value in shrinkage - compensating concrete
本文討論了粉煤灰、礦渣、杜拉纖維對混凝土膨脹性能的影響，在補償收縮混凝土中，摻合料使其膨脹率減低，杜拉纖維可以提高混凝土的體積穩定性，顯著提高劈拉強度。 -
In this paper, high strength micro - expansive lightweight aggregate concrete is compounded successfully and it is firstly applied to the reinforcement of arch ring which is reference to the further compound and usability of lightweight aggregate concrete
本文的研究成功地配製了高強度輕質砼，並將輕質砼首次應用於拱橋主拱圈加固，對輕質砼的進一步配製以及廣泛應用具有參考價值。 -
Bfs can reduce the early strength of high strength superplasticized expansive concrete and make expansion effect develop fully. so high strength concrete with bfs shows higher e2
磨細礦渣的加入使高強膨脹混凝土的早期強度降低，膨脹效應得以較充分發揮，所以加入磨細礦渣的高強混凝土顯示出較高的膨脹率。 -
The technique of dam construction by weakly expansive concrete added with magnesia ( wecam ) is a new technique developed in china, in which appropriate light - burnt magnesia is added to dam concrete when produced to generate a special delayed expansive stress to compensate shrinking stress due to decrease of temperature so as to prevent concrete cracks. it not only is in favor of simplifing the method of temperature control and an effective solution to the crack problem of concrete dam, but also simplify the technology of dam construction and bring down the project cost, further more, speed greatly up the construction of concrete dam
外摻氧化鎂微膨脹混凝土築壩技術是指在生產大壩混凝土時，摻入適量的輕燒氧化鎂，利用其特有的延遲膨脹補償混凝土壩的溫度應力，以防止混凝土壩產生的裂縫，這不僅有利於簡化溫控措施，有效地解決混凝土壩的開裂問題；而且簡化了施工工藝，降低了工程造價，大大了加快施工進展。 -
The research work about durability of high - performance self - compacting micro - expansive concrete show that the micro - expansive function and micro - bubble producing function of mineral admixture h can improve the impermeability, frost - resistance ability and sulfate eroding resistance ability etc of self - compacting concrete
研究了免振搗微膨脹高性能混凝土的各項耐久性能，結果表明：山于新型礦物添加劑h的微膨脹功能和微量發氣功能，研製成功的免振搗微膨脹高性能混凝土具有優良的抗滲性、抗凍性、抗硫酸鹽侵蝕等耐久性能。 -
This seemingly contrary phenomenon is rooted in the coordination of expansion and strength development : the high strength especially high early strength of high strength superplasticized expansive concrete confined expansion effect, and there is " self - restricted effect " in concrete
上述看似矛盾的現象源於膨脹混凝土的膨脹與強度的協調性：高強流態膨脹混凝土的高強度，特別是較高的早期強度限制了膨脹效應的發揮，在混凝土內部存在「自約束效應」 。 -
From the research on hpec we can know that expansion property of high strength superplasticized expansive concrete shows obvious particularity compared with ordinary expansive concrete. when bfs is not put in, high strength superplasticized expansive concrete shows autogenous shrinkage in 1 day standard curing. and in 14 day ' s age e2 is less than half of middle strength superplasticized expansive concrete ' s with same csa dosage, and this shows expansion effect is confined more
對hpec混凝土的研究發現，與普通膨脹混凝土相比，高強流態膨脹混凝土的膨脹性能表現出明顯的特殊性，在不摻超細礦物質摻合料（磨細礦渣）時，高強流態膨脹混凝土標準養護1天時出現自收縮， 14天時其限制膨脹率不到相同csa摻量的中強流態膨脹混凝土限制膨脹率的一半，表現為膨脹效應受到更大限制。 -
Research on experiment and expansion model of expansive concrete filled steel tube
鋼管微膨脹混凝土試驗與研究 -
Soundness, as a vital quality index of weakly expansive concrete added with magnesia, attracts much attention of dam constructers
安定性是外摻氧化鎂微膨脹混凝土的一項重要的質量指標，引起了大壩建設者的高度重視甚至擔憂。 -
In this dissertation the author puts forward the concept of high performance expansive concrete ( hpec ), and deems that hpec is a compound material of ec ( expansive concrete ) and hpc in which both sides can bring well play
本文提出了高性能膨脹混凝土（ hpec ）概念，認為hpec是ec （膨脹混凝土）和hpc發揮各自優勢的有機結合。 -
The expansion and strength of middle strength superplasticized expansive concrete develop more coordinately. fa reduces the early strength of middle strength superplasticized expansive concrete, and this make more expansion become invalid when the concrete is in plastic state
中強流態膨脹混凝土的膨脹與強度性能發展比較協調，粉煤灰的加入降低了早期強度，使更多的膨脹變為無效膨脹消耗在仍處于塑性狀態的混凝土中，混凝土限制膨脹率減小。 -
On this base proper autoclaving condition of weakly expansive concrete with magnesia and its evaluating standard are put forward. the main conclusions are as follows : 1. the autoclave expansion of wecam goes up and its rate trends to mitigation when autoclave temperature rise under other fixed condition
從150經180至200增幅大，混凝土試件的壓蒸膨脹率在其它條件同等的情況下有較大差異；從200經210到216增幅較小，混凝土試件的壓蒸膨脹率在其它條件同等的情況下較為接近。 -
This provides the probability to design the expansive concrete with different expansive energy levels and different strength grades. if blast furnace slag ( bfs ) or fly ash ( fa ) is added, e2 will decrease
在hpec砂漿中摻入磨細礦渣（ bfs ）或粉煤灰（ fa ） ，試件限制膨脹率有所下降， csa摻量越高，摻bfs或fa后限制膨脹率下降幅度越大。 -
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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