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hydration heat

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hydration heat 水合熱。

水合熱。 “hydration“ 中文翻譯：   n. 【化學】水合(作用)。 “heat“ 中文翻譯：   n. 1.熱；熱力；熱度；熱量。 2.體溫；發燒。 3. ...“heat of hydration“ 中文翻譯：   水合熱; 水化熱“hydration heat of ce-ment“ 中文翻譯：   水泥水化熱“initial heat of hydration“ 中文翻譯：   初始水化熱“low heat of hydration“ 中文翻譯：   低熱“low heat of hydration cement“ 中文翻譯：   低水化熱水泥“low-heat of hydration cement“ 中文翻譯：   低水化熱水泥“moderate heat of hydration“ 中文翻譯：   中熱“acetylene hydration“ 中文翻譯：   乙炔水合“batch hydration“ 中文翻譯：   間歇水化“biopolymer hydration“ 中文翻譯：   生物聚合物水合作用“catalytic hydration“ 中文翻譯：   催化水合作用“clay hydration“ 中文翻譯：   粘土水合“coefficient of hydration“ 中文翻譯：   水化系數“continuous hydration“ 中文翻譯：   連續水化“degree of hydration“ 中文翻譯：   水合度; 水化程度; 水化度“direct hydration“ 中文翻譯：   直接水合“enthalpy of hydration“ 中文翻譯：   水合熱函“entropy of hydration“ 中文翻譯：   水化熵“ethylene hydration“ 中文翻譯：   乙烯水合“extent of hydration“ 中文翻譯：   水化程度“hydration and turgor“ 中文翻譯：   水合作用與充盈“hydration barrier“ 中文翻譯：   水化層屏障“hydration catalyst“ 中文翻譯：   水合催化劑

hydration water

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，配制出具有很好的可泵性能和耐久性能的混凝土。

Proper amount of micro - silica , ultra - fined slag , high quality fly ash , meta - kaolin clay can improve the working ability , hydration heat and strength ( especially in the later period ) of the cement concrete . proper amount of meta - kaolin clay can do good to the strength of the cement concrete but verse to the working ability by magnifying water - cement ratio 適量硅灰、優質粉煤灰、礦渣超細粉的加入，改善了混凝土的工作性、水化熱及強度(特別是后期強度) ；適量偏高嶺土對水泥混凝土強度產生有利影響，但對工作性會有一些不利影響，主要是加大水膠比。

This paper establishes a model simulating dam actual placing process and considering the non - continuity of initial temperature on the boundary of new and old concrete , daily air temperature change , concrete - placing temperature , hydration heat , heat insulation on boundary , water - storing process , placing intermission and curing with water . the calculation of stress field considers the concrete weight , static water pressure , thermal stress , different autogenous volume change between rcc and normal concrete , change of elastic modulus of concrete with age and creep action 考慮了乞今最為全面的初始條件和邊界條件，包括模擬壩體的實際升程過程，考慮了新老混凝土接觸面上的初始溫度不連續，逐日的氣溫變化，混凝土的入倉溫度，水化熱溫升，邊界保溫，水庫蓄水過程，澆筑間歇以及灑水養生等因素；應力場的計算考慮了混凝土的自重，靜水壓力，溫度應力，常態混凝土與碾壓混凝土不同的自生體積變形，混凝土的彈性模量隨齡期的變化以及徐變的作用。

Based on the analysis of the temperature test result of the landing rectangle aqueduct of caohe river for the emergency water supply project of the beijing - shijiazhuang section on the middle route of the south - to - north water diversion project , the temperature developing feature of the early - age hydration heat of the thin - wall concrete is described , and then the main effecting factors of the hydration heat temperature on the landing rectangle aqueduct and the control measures concerned are put forward herein 摘要通過對南水北調中線京石段應急供水工程漕河渡槽段落地矩形渡槽溫度測試結果的分析，闡述了薄壁混凝土早期水化熱溫度發展的特點，提出了影響落地矩形渡槽水化熱溫度的主要因素與控制措施。

So it is quite important for sfrc to be used in those essential parts , such as the vicinity of frame column or shear wall in basement . the sfrc greatly improves the punching shear carrying capacity in raft foundation , or reduces the thickness of raft foundation in the same load . this in turn offers convenience in construction , reduces hydration heat in concrete and saves investments 因此，將鋼纖維混凝土用于特別需要的那些部位顯得尤為重要，比如用于筏形基礎的框架柱或剪力墻附近，大大提高基礎的抗沖切承載力，在荷載一定的條件下可減小筏板的厚度，將會給施工帶來方便，減少水化熱，節約建設投資。

Mapping rheogram and analyzing thixotropy of fresh cement paste with different superplasticizers by measuring the rheologic parameters such as shearing stress 、 yield stress and plastic viscosity . using multi - channel isothermal calorimeter together with non - contacting electrical resistivity device , traditional hydration heat testingl and electrical resistivity testing were connected . using temperature - sensitive of traditional hydration heat model and structure - sensitive of structure formation model , instantaneous formation condition of paste structure was described exactly `采用多通道等溫量熱儀以及無電極電阻率測定儀,將傳統的水化熱測試與電阻率測試結合起來,運用水化熱的熱敏感性與結構形成的結構敏感性,更加真實地描述了水泥漿體初始結構的瞬時形成狀態;系統全面地研究了高效減水劑對水泥水化過程的調控作用;運用微觀測試方法,深入探討了高效減水劑對水泥水化過程的影響。

Under the influences of random variabilities , during both construction period and operation period , the temperature field within a gravity dam body could be regarded as a random one . in this paper , stochastic finite element methods are suggested to deal with the random temperature field . by use of the suggested methods , the influences of random environmental and random hydration heat of concrete and the initial temperature of concrete as well as the thermal parameters of both concrete and rock foundation are all taken into account . according to a scheduled time table of construction , random temperature fields of a typical concrete gravity dam within both the construction period and the operation period are calculated by emulation the layer constructing of the dam . some useful conclusions are obtained from the computational results 由于施工期和運行期各種隨機因素的影響，使重力壩溫度場成為隨機.本文綜合考慮了環境溫度(包括氣溫和庫水溫度) 、混凝土絕熱溫升、入倉溫度以及混凝土和基巖的熱學參數隨機性的影響，基于隨機有限元法，給出了重力壩隨機溫度場的計算方法，對一典型重力壩按給定的施工進度模擬分層澆筑施工過程，對施工期及運行期前期的隨機溫度場進行了計算，并得出了一些有益的結論

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，采用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，并在實際應用中取得了良好的效果。

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，采用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，并在實際應用中取得了良好的效果。

In this paper , a 3d finite element analysis software ( fzfx3d ) was compiled to simulate the construction process of mass concrete structures constructed with sequence method . based on the practical project xiluodu arch dam , the dam ' s construction process was simulated by a small time step size , 0 . 5 or 1 days . the environmental temperature change , hydration heat rise , artificial cooling , creep , volume deformatio 運用laplace變換方法將溫度的求解表示為只與空間坐標及澆筑時間有關的函數，從而避免了用隱式差分法、有限元法求解時需求解聯立方程的因而對測點選擇的依賴，也避免了顯式差分法求解穩定性受時間步長，測點間距大小限制的缺點，因而具有測點布置靈活的特點。

The compatibility and harmony among workability , mechanical grade and durability are optimized , with the ground of adjusting composition and dosage of fd - 1 ; after analyzing anti - freezing damage mechanism , it is concluded that temperature is main factor , which affects structure and property of concrete . after two processes of temperature - elevation of hydration heat and temperature - descent of cold - environment , there is original damage in concrete and its existence leads to temperature fields , as results in temperature damage on transition phase > aggregate and cement mortar of concrete 通過對負溫混凝土早期防凍分析研究認為，環境溫度對混凝土的結構形成及其性能的影響十分突出，水泥水化溫升和環境散熱降溫兩個過程導致混凝土結構內部產生不均勻溫度場，對過渡相、水泥砂漿以及骨料都能產生不同程度的溫度損傷，產生內部溫差應力裂紋，初始損傷也是不可避免的。

In order to simulate the construction process and the effect of concrete pouring temperature and outside temperature on temperature field and thermal stress field in the dam , temperature field and thermal stress field are calculated layer by layer . the calculation step during construction is 0 . 25 day , and during operation the diffusion of hydration heat of concrete is over and elastic modulus is basically stable , changeable step is used 為了研究施工進度、混凝土澆筑溫度、外界溫度對壩體溫度場和應力場的影響，按碾壓混凝土施工方法每澆筑一層(層厚0 . 3m ，澆筑時間6小時)計算一次溫度場和應力場，這樣，施工期計算步長為0 . 25天，運行期因混凝土水化發熱已結束，且彈模基本穩定，故采用變步長計算。

The temperature rise at the center of a massive concrete wall is calculated by using the adiabatic rise of temperature and heat conduction equations of concrete based on the equivalent time , and considering effects of temperature on the hydration heat reaction ratio and creep characteristics of early - age concrete 摘要基于等效時間的混凝土絕熱溫升、熱傳導方程，考慮溫度對早期混凝土水化熱化學反應速率和徐變特性的影響，計算了大體積混凝土墻中心的溫升。

Construction of a mass concrete is in the construction process , because of cement let out in large quantity hydration heat and surface of a mass concrete let out heat , make its temperature , humidity cause to ascend and descend , and it causable constringency transform will be unavoidable 大體積混凝土結構在施工過程中，由于混凝土中水泥熟化時放出大量的水化熱及其隨后的表面散熱，使其溫度、濕度出現升降變化，并由此而引起的收縮變形將是無法避免的。

Utilization is of importance for hydraulic concrete . utilization of the industrial scrap such as fly ash for concrete not only saves cement and invest , but also produces and improvement of concrete performance , including the cracking of mass concrete due to hydration heat 利用粉煤灰等工業廢料生產混凝土不僅可節約大量水泥，減少投資，而且可以改善混凝土的某些性能，包括在大體積混凝土中防止水化熱引起的結構開裂。

At the same time , the problem from the concrete cracking is effectively solved through the measures such as enhancing the quality of the excavated surface , adjusting the admixing ratio of fly - ash in the concrete , and lowering the temperature rise of the hydration heat 同時通過提高開挖表面質量，以及調整粉煤灰摻量以降低水化熱溫升等措施，有效地解決了混凝土裂縫問題。

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個模型可以用于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制的混凝土的自收縮發展過程。

By means of analyzing the measured data of deformation and temperature inside the structure , the laws of deformation and temperature of the sfrc structure under the influences of early hydration heat and outside temperature were found 通過實測結構內部溫度及其變形，給出了鋼纖維混凝土在早期水化熱及外界溫度影響下的溫度及變形規律。

At first the finite element theory for temperature analysis is introduced , and then mainly discussed the calculation models of cement hydration heat and the boundary condition under sun radiation 首先對這一方法的基本原理進行了簡要的介紹,著重探討了計算中的水化熱計算模型、日照邊界條件處理等。