hydration shrinkage 中文意思是什麼
hydration shrinkage
解釋
水化收縮-
The experimental results show that these models can express precisely the isotherm hydration heat emission curve of portland cement and the autogenous shrinkage process of concrete prepared with portland cement
實測數據檢驗結果表明，這2個模型可以用於模擬硅酸鹽水泥的等溫水化放熱曲線，以及用硅酸鹽水泥配製的混凝土的自收縮發展過程。 -
In both models two - step regressive equations are adopted to simulate the step of quick development and the step of even change of hydration reaction and autogenous shrinkage
這2個模型均採用兩階段的經驗公式，分別用於模擬水化反應和自收縮的快速發展階段與平穩變化階段。 -
The dynamic models of hydration reaction of cement and autogenous shrinkage of concrete were constructed respectively based on the multi - composition and multi - scale hydration reaction of cement
摘要基於水泥的多組分和多尺度水化反應的原理，分別建立了水泥的水化反應和混凝土自收縮的動力學模型。 -
With the very low water to cement ratio, rpc has ultra - high strength high ductility and low permeability. in this paper, the compressive strength of rpc can reach to a high point with the number approximately 135mpa. as illustrated from the study results, we can approve some fundamental conclusions : there are big effects on rpc with deferent kinds and properties of raw materials and deferent curing conditions ; stress - strain curve shows the process of destroy with rpc samples ; x - ray diffraction analysis indicates that heat treatment at temperatures 90 accelerate the hydration of rpc sharply, therefore, mechanical and microstructural properties of rpc are highly dependent on heat treatment ; it is believed that rpc materials have excellent resistance to chloride permeability ; during the heat treatment, the shrinkage of rpc developed quickly because of chemical reactions ; the rpc with slag mostly has the advantage of rpc without slag about resistance to solutions corrosion
研究結果表明：通過對rpc各組分摻量變化的研究，可以找到rpc的最優配合比；試件成型后的熱養護制度對rpc的性能影響巨大； rpc的抗壓應力?應變曲線可以反映出試件受破壞時微裂紋的擴展情況，剛纖維的摻入可以大幅改善rpc的韌性； rpc在成型后存在較大的收縮，而其中的化學收縮要遠遠大於乾燥收縮； rpc具有很強的抗氯離子滲透性能，漿體的密實度很高；通過x射線衍射實驗，可以發現rpc的膠凝體中ch晶體已經幾乎不存在，膠凝體主要由c - s - h凝膠和未水化水泥顆粒組成；在抗溶液侵蝕的實驗中，摻礦渣rpc的抗溶液侵蝕性能在絕大多數情況下要好於不摻礦渣試件，酸、堿溶液和浙江工業大學碩士學位論文摘要一些鹽溶液都會對rpc的結構產生侵蝕作用，但是機理各有不同。 -
The addition of aluminum sulfate caused the chemical shrinkage of cement mortar to reduce a little, but induced net plasma self - shrinkage to grow into expansion. that reason was that ettringite was produced by reaction between aluminum sulfate and hydration products
硫酸鋁摻入水泥中，可以使水泥漿的化學收縮有少量的減少，但可以使水泥凈漿的自收縮改變為膨脹效應，這是因為其與水泥水化的生成物反應生成了鈣礬石。 -
By means of comparative experiments, this paper illustrates the influences of different cements, admixtures of flash - setting agents, water cement ratios, curing temperatures and raw materials on the performances of sprayed concrete, such as the setting time, strength and shrinkage ratio, on different conditions of efflorescence and hydration, so as to present references with regularity for the practical application of sprayed concrete
摘要通過對比試驗，闡明了不同水泥、不同速凝劑摻量、水灰比、養護溫度以及原材料在不同風化和水化程度條件下，對噴射混凝土凝結時間、強度、收縮率等性能的影響，以期為噴射混凝土的實際應用提供規律性的參考資料。 -
Effect of water - binder ratio and composition on the hydration products and hydration degree of complex shrinkage - compensating binders
水膠比和組成對補償收縮膠凝材料水化程度與水化產物的影響 -
Abstract : during construction of the capital international airport ' s garage building project, the c50 and over c60 high performance concrete has been adopted for its construction. for the aim of 1, to get a maximum reduction of cement comsumption 2, to lower the concrete ' s hydration heat 3, to reduce concrete ' s shrinkage and cracks, and 4, to promote concrete ' s performance, a high quality chilled blast furnace superfine slag has been adopted as an admixture. furthermore, the adoption of some other minerals as the admixtures to get a high performance concrete has been carried out. as a result, these procedures and operations would have developed considerably the potential activity of concrete, and eventually the multiple performance and multiple function of concrete would have been improved and promoted. in conclusion a good result has been achieved in practice
文摘:首都國際機場停車樓工程中，採用c50及c60以上高性能混凝土，為最大限度減少水泥用量，降低水化熱，減少收縮與裂縫，提高混凝土的性能，優選了有效成分含量高、質量好的水淬高爐礦渣磨細后單獨摻用，或再與其他礦物組分復合作為高性能混凝土的摻合料，以充分發揮礦渣的潛在活性，從而使混凝土的多項性能得到極大的改善和提高，並在實際應用中取得了良好的效果。 -
During construction of the capital international airport ' s garage building project, the c50 and over c60 high performance concrete has been adopted for its construction. for the aim of 1, to get a maximum reduction of cement comsumption 2, to lower the concrete ' s hydration heat 3, to reduce concrete ' s shrinkage and cracks, and 4, to promote concrete ' s performance, a high quality chilled blast furnace superfine slag has been adopted as an admixture. furthermore, the adoption of some other minerals as the admixtures to get a high performance concrete has been carried out. as a result, these procedures and operations would have developed considerably the potential activity of concrete, and eventually the multiple performance and multiple function of concrete would have been improved and promoted. in conclusion a good result has been achieved in practice
首都國際機場停車樓工程中，採用c50及c60以上高性能混凝土，為最大限度減少水泥用量，降低水化熱，減少收縮與裂縫，提高混凝土的性能，優選了有效成分含量高、質量好的水淬高爐礦渣磨細后單獨摻用，或再與其他礦物組分復合作為高性能混凝土的摻合料，以充分發揮礦渣的潛在活性，從而使混凝土的多項性能得到極大的改善和提高，並在實際應用中取得了良好的效果。 -
The shrinkage characteristics of hsc and normal concrete at short term and long term are researched. based on the above research, high performance expansive c50 - c80 concrete, which posses good expansive properties, excellent flow ability, low slump loss and hydration heat. in order to improve the anti - cracking of some important projects, such as cutting wall, the workability and bulk stability of fiber - reinforced micro expensive concrete are researched
針對高強混凝土的收縮特性以及性能特點，本文提出將膨脹劑引入高強混凝土內進行補償收縮，研究了粉煤灰、礦渣、硅灰等摻和料對混凝土工作、力學耐久性能的影響和c50 c80高強微膨脹補償收縮混凝土的力學與工作性能，配製出具有很好的可泵性能和耐久性能的混凝土。 -
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。 -
All concrete structures are exposed to volume changes caused by hydration reactions in the early age. if the volume changes are restrained, stresses is generated which will cause cracking when it overcomes the tensile strength. as the mechanical properties of early age concrete vary with time, especially the creep degree depends on the time elapsed and the time at loading, to calculate the stress of concrete structure is a complex nonlinear problem. the finite element method ( fem ) can take account of the evolution of the stiffness properties, the development of thermal strain, creep, shrinkage and so on. in this paper, a general approach for numerically simulating this type of behaviour is presented firstly. then, how to solve this problem is introduced by the general finite element software ansys using the initial stress method. finally, a detailed description of an example calculation that demonstrates the potential of the numerical simulation strategy follows
早期混凝土由於水化反應都會產生體積變化.如果體積變形受到約束就會產生應力，一旦超過混凝土的抗拉強度就會產生裂縫.由於早期混凝土的力學性能是隨時間變化的，特別是徐變，它不僅與加載時間有關而且同時隨齡期而變化，因此計算早期混凝土結構應力是較為復雜的問題.有限單元法不僅可以考慮混凝土剛度的變化，而且可以考慮溫度、徐變、收縮等因素.本文利用初應力法對通用有限元軟體ansys進行了二次開發，通過工程實例計算了高層建築地下室側墻早期混凝土應力的變化過程，並提出了相應的抗裂措施 -
Adopting fd - 1 admixture, c50 concrete can be obtained, which has excellent adaptability for environment temperature ? 5 c ; self - shrinkage of concrete is inevitable, and its variation tendency based on w / c and hydration age, fd - 1 has wonderful inhibition for self - shrinkage, and meanwhile anti - friction property can be promoted
在fd - 1組分對負溫混凝土的耐久性能研究中，認為影響自收縮的主要因素是水灰比和齡期； fd - 1外加劑對水泥自收縮有很好的抑制作用，能夠有效的提高水泥砂漿的耐磨性能。 -
Effect of shrinkage - reducing admixture on hydration and shrinkage deformation of cement - based materials at early ages
減縮劑對水泥基材料早期水化及收縮變形性能的影響 -
On the base of studying the compatible of chemical admixture and mineral admixture with cement, according to heat of hydration, chemical shrinkage and environment condition in the course of concreting and restrained cracking sensitivity indicates different quantity of mineral admixtures lead to different effect to the stability of concrete, such as 30 % fly ash and 40 % ~ 60 % micro - slag can improve the stability, but silica fume deteriorates the stability
在研究了化學外加劑、礦物摻合料與水泥兼容匹配關系的基礎上，指出不同礦物摻合料對混凝土的體積穩定性（熱穩定性、化學收縮、干縮、開裂敏感性）的影響不同，粉煤灰摻量達到30 ，礦粉在40 60改善體積穩定性，硅灰惡化了體積穩定性。
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