concrete in water 中文意思是什麼
concrete in water
解釋
水中混凝土-
Based on the simulation model theory of temperature and stress fields presented in this article, a large simulating program for high rccd has been developed, which can numerically simulate all kinds of temperature control measures, including water pipe cooling, heat insulating in winter, reducing place temperature of concrete, spraying water brume, and long interval over - watering surfaces overflowing in flood season.
基於本文提出的溫度場和徐變應力場模擬模型理論，編制了高碾壓混凝土壩的三維有限元模擬計算程序，在程序中考慮了各種溫控措施的數值模擬，包括：水管冷卻、冬季保溫、降低混凝土的澆築溫度、夏季混凝土表面噴水霧、施工汛期壩頂面過水等。 -
Climate and evaluation of crystallizable erosion of concrete by sulfates in water and soil
土中硫酸鹽對混凝土結晶腐蝕的氣候與評價 -
Standard test method for water retentivity of grout mixtures for preplaced - aggregate concrete in the laboratory
在實驗室內進行預置集料混凝土灌漿混合料保水性試驗的標準試驗方法 -
An investigation on the fracture mechanism of concrete under different shock loading in water
不同沖擊載荷下水中砼破壞機理的初步研究 -
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。 -
Under the different freezing - thawing cycle circumstance, three factors of water binder ratio, air content and mineral admixture are analyzed by using the method of orthogonal table. the test results show that the chief influencing factor is the water binder ratio in water freezing - thawing cycle circumstance, and in salt freezing - thawing cycle circumstance is the air content. this could illustrate that entraining air into concrete can improve the frost resistance of concrete effectively in salt freezing - thawing cycle
分析了在純水和3 . 5 % nacl溶液中受凍后，水膠比、含氣量和摻合料對混凝土飽和系數及變化速率的影響規律，試驗結果表明水膠比對混凝土水凍時的飽和系數及變化速率影響顯著，而鹽凍情況下含氣量則是主要影響因素，說明引氣能顯著提高混凝土的抗鹽凍性能。 -
The paper introduces the anticrack, antiseep, and antistrike of polypropylene fibred concret and sup - plies some theories for polypropylene fibred concrete used more widely in water conservancy engineering
摘要論述聚丙烯纖維砼的抗裂性、抗滲性、耐磨性等性能，為聚丙烯纖維砼在水利工程中的進一步應用提供一定的理論基礎。 -
Sealing of joints in concrete with water stops
用水密封的混凝土接縫的密封 -
Covered in concrete pouring water conservation should be carried out after the 12h
覆蓋澆水養護應在混凝土澆築完畢后的12h內進行 -
In charge of one of major subjects of the national eighth five - year plan, i. e. " study on shotcreting techniques of polyacrylate emulsion cement mortar for impermeability coating of pu ding rcc dam ", the achievement of which has been appraised by the ministry of electric power and evaluated as reaching national leading level. 2. in charge of the major subject aided by the committee of national natural science funds, " study on durability of high bolumes of fly ash concrete ", the first phase achievement of which has been commended by the committee. 3. in charge of one of major subjects of the national ninth five - year plan, i. e. " study on high performance concrete in marine engineering, design and construction ". 4. acting as one of editors - in - chief of " technical specification for abrasion and cavities resistance of concrete in hydraulic structures ", which is issued by the ministry of water resources. 5. by providing the repairing and strengthening schemes on seepage and cracks of the basement of nanjing lukou international airport, the air traffic opening of the airport was ensured as scheduled. 6. consulting services on techniques of high performance and abrasion - erosion resistance concrete for three - gorges project, anti - corrosion of reinforced concrete strutures for the ore port of shanghai baoshan iron and steel works, mass fly ash concrete for jiangyin yangtze river bridge and pumping concrete for nanjing yangtze river second bridge
主持國家「八五」攻關項目「普定碾壓混凝土壩上游面丙乳砂漿防滲層大面積施工工藝研究」 ，成果通過部級鑒定，評價屬國內領先水平； 2 .主持國家自然科學基金重大項目「高摻量粉煤灰混凝土的長期性能研究「 ，階段成果獲國家自然科學基金委通報表彰與獎勵； 3 .主持國家「九五」攻關項目「海工高性能混凝土成套技術研究」 ； 4 .水利部「水工混凝土抗沖磨防空蝕技術規范」的主編之一； 5 .為南京祿口國際機場地下室修漏與裂縫補提出技術方案被采納並實施，為機場如期通航作出貢獻； 6 .為三峽工程抗沖磨高性能混凝土技術、上海寶鋼礦石碼頭鋼筋混凝土防腐蝕技術、江陰長江大橋大體積粉煤灰混凝土技術、南京長江二橋泵送混凝土技術等提供咨詢建議。 -
In this paper, the performance, application and composition about plastic concrete, self - congealing mortar and hardened slurry are analysed on the basis of summarizing type, characteristic and developing course of cut - off wall ' s material in water conservancy project
摘要在總結我國水利工程防滲墻墻體材料類型、特點和發展歷程的基礎上，著重對塑性混凝土、自凝灰漿和固灰漿等柔性墻體材料的組成、性能指標和應用情況做了比較科學的分析和探討。 -
Moreover, the results indicate that the curing condition of this type concrete is very strict and it is necessary to strengthen its early curing in water
同時，研究表明，超高強補償收縮混凝土對養護的要求極為苛刻。加強超高強混凝土的早期水養護尤其重要。 -
The frequency of concrete strength testing is determined by the quantity of concrete used for a structure. a pre - cast mould is filled with concrete and, upon curing, soaked in water for 28 days before delivering to a laboratory for the " crushing " test. the compressive force needed to break the concrete represents the strength of the concrete
在建築過程中，建造商要按地盤中使用石屎數量的多寡，去?定測試石屎強度的次數，測試時建造商需要在預制的鑄模內倒滿石屎，待它凝固后浸在水裡二十八日，再運往實驗室進行測試，看看需要用幾大的力量才能把它壓碎，這個令石屎碎裂的力度就是石屎的強度。 -
This paper deals with high fluid concrete in which high strength ceramsite made from shale was used as coarse aggregate. effects of cement content, water - cement ratio, sand percentage, mineral admixture, grading and pretreatment of lightweight aggregate on compressive strength and workability of high fluid structural lightweight aggregate concrete have been studied. the rules of water absorption of high strength lightweight aggregate under different pressure and effects on uniformity of high fluid structural lightweight aggregate concrete have been studied too
本文採用高強頁巖陶粒，摻加高效減水劑配製大流動性結構輕集料混凝土，討論了水泥用量、水灰比、砂率、礦物摻料及輕集料的級配和預濕方式對大流動性結構輕集料混凝土強度和工作性的影響；系統研究了高強陶粒在常壓和壓力下的吸水規律；研究了影響大流動性結構輕集料混凝土勻質性的因素，提出了解決大流動性結構輕集料混凝土分層離析的具體措施。 -
Specification for the deformation joint design of concrete structures in water work engineering
給水排水工程混凝土構築物變形縫設計規程 -
In this paper, referring to qingju water power station, temperature control analysis and study has been done : study on the match ratio of the concrete and question of modifying of the special fine sand concrete to improve resisting ability of splitting of concrete ; study on the technology of the highly mixed fly ash to reduce the adiabatic temperature rise of concrete ; in case of the condition of resisting splitting to allow, study on the temperature control measure to strengthen and water the size of building, simplify the operational procedure, accelerate the construction speed, economize the expenses of the project
溫控問題成為青居水電站設計和施工的關鍵技術問題。 、本文對水工大體積混凝土溫控問題進行了分析和總結，結合青居水電站閘壩工程，開展溫度應力及溫度控制研究:研究混凝土的配合比及特細砂混凝土『改性問題，提高混凝土的抗裂能力;研究高摻粉煤灰技術，降低混凝土的絕熱溫升:在抗裂條件允許的情況下，研究施工過程中溫控措施的簡化，以加大澆築尺寸，簡化施工程序，加快施工進度，節約工程費用。 -
The liner of turbine draft tube in ankang water power station was punched by cavitation, which leads to welding crack, metal shed and concrete delve, water spurting out. the cause of the damage is analyzed, the treatment is expounded
論述了安康水電站水輪機尾水管里襯被汽蝕破壞穿透、焊縫開裂、撕裂掉塊、混凝土掏空、大量噴水的事故原因及處理方法。 -
Abstract : the liner of turbine draft tube in ankang water power station was punched by cavitation, which leads to welding crack, metal shed and concrete delve, water spurting out. the cause of the damage is analyzed, the treatment is expounded
文摘:論述了安康水電站水輪機尾水管里襯被汽蝕破壞穿透、焊縫開裂、撕裂掉塊、混凝土掏空、大量噴水的事故原因及處理方法。 -
Water absorption rate of high strength ceramsite in concrete is lower than in water, and it is influenced by water - cement ratio, the higher w / c ratio, the bigger water absorption rate. and the lower w / c ratio in concrete is, the less obvious changes of water absorption rate by outer pressure and time are
高強陶粒在混凝土中的吸水率低於其在水中的吸水率，且高強陶粒在混凝土中的吸水率要受到混凝土水灰比的影響，水灰比越大，吸水率越大；水灰比越低，吸水率隨壓力和受壓時間的變化越不明顯。 -
It can adjust the retardation time and water reducing ratio properly according to the customer s demand, and it is applied to various waterproofing concrete, especially the large application of waterproofing concrete in winter
混凝土凝結時間稍有延長可減少乾燥天氣時新澆混凝土的干縮裂縫，摻量必須嚴格控制和精確計量。
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