
碾壓混凝土
There is the size effect in roller compacted concrete specimen as in concrete specimen.
碾壓混凝土試件與混凝土試件一樣也存在着尺寸效應。
The unstable temperature field of roller compacted concrete (RCC) dam is one of the basic conditions for simulation stress calculation.
碾壓混凝土壩的非穩定溫度場是進行仿真應力計算的基礎條件。
That both the structure and material of concrete dams and construction means of earth dams are used in roller compacted concrete dams make RCC dam increasingly used in water engineerings.
碾壓混凝土将混凝土壩結構和材料與土石壩施工方法兩者的優越性結合起來,在水利工程中得到愈來愈多的運用。
Technology for RCC(Roller Compacted Concrete)is important progress of concrete construction technology and Chaotic Vibratory Roller is modern technology of vibratory roller.
碾壓混凝土(RCC)技術是混凝土建造技術的重要進展,而混沌振動碾壓是振動碾壓的近代技術。
Cement sand and gravel(CSG) dam is a new type of dam between concrete-faced rock-fill dam(CFRD) and roller compacted concrete dam(RCC).
膠凝砂礫石壩(CSG)是介于混凝土面闆堆石壩(CFRD)和碾壓混凝土重力壩(RCC)之間的一種新壩型。
Roller Compacted Concrete Dam (RCCD) is a new type of dam, which has been developed quickly and applied extensively.
碾壓混凝土壩是一種近幾十年發展快速、應用廣泛的新型壩。
The problem of thermal stress and a need for temperature control in the mass concrete construction also occur in the roller compacted concrete dams(RCCD).
大體積混凝土的溫度應力問題與溫度控制要求在碾壓混凝土壩中同樣存在。
To increase the shear strength on lift joints of the high roller compacted concrete dam(RCCD), a kind of construction method is brought forward.
理論分析認為這一施工技術對提高碾壓混凝土層縫的抗剪強度效果顯著。
The effect of air content on the frost resistance of roller compacted concrete(RCC)is discussed.
試驗研究了含氣量對碾壓混凝土抗凍性的影響。
That both the structure and material of gravity dams and construction means of earth dams are used in roller compacted concrete dams make them increasingly used in water engineerings.
碾壓混凝土壩将混凝土壩結構和材料與土石壩施工方法兩者的優越性結合起來,在水利工程中得到愈來愈多的運用。
That both the structure and material of gravity dams and construction means of earth dams are used in roller compacted concrete dams make them increasingly used in water work.
碾壓混凝土壩将混凝土壩結構和材料與土石壩施工方法兩者的優越性結合起來,在水利工程中得到愈來愈多的運用。
That both the structure and material of gravity dams and construction means of earth dams are used in roller compacted concrete dams makes them increasingly used in water engineering.
碾壓混凝土壩将混凝土壩結構和材料與土石壩施工方法兩者的優越性結合起來,在水利工程中得到愈來愈多的運用。
Coupled seepage and temperature fields in Longtan roller compacted concrete gravity dam are analyzed by applying the mathematical model for coupled seepage and temperature fields in concrete dam.
應用混凝土壩滲流場與溫度場耦合分析的數字模型,進行了龍灘碾壓混凝土重力壩穩定滲流場與穩定溫度場的耦合分析。
The construction of the roller compacted concrete dam needs four dry seasons and four flood seasons to reach the design elevation.
碾壓混凝土攔河壩工程須經過四個枯水期四個汛期的施工才能達到設計高程。
Roller compacted concrete dam is similar to concrete dam, and also has temperature cracks.
碾壓混凝土壩與常态混凝土壩相似,同樣存在着溫度裂縫問題。
Through the comparison the three center single arch dam was finally selected, thus high speed construction of the roller compacted concrete can be put in practice.
通過比選最終确定為三心圓單曲拱壩,壩身不布置洩洪建築物,從而實現了碾壓混凝土的快速施工。
The anti-freeze agent has been widely applied in normal concrete, however, it is less applied in the roller compacted concrete.
防凍劑在常态混凝土冬季施工中應用比較廣泛,但在碾壓混凝土中應用較少。
Along with prevalent application of roller compacted concrete technique, the problem of thermal stress is urgently solved.
隨着碾壓混凝土技術的普及應用,溫度應力問題急需解決。
The roller compacted concrete has many obvious advantages of speed construction, less cement consumption and saving capital cost.
碾壓混凝土具有施工速度快,水泥用量少,投資省等明顯的優點。
The paper describes the research and evaluation of the design, construction, and test issue of the roller compacted concrete arched dam of the Puding Hydropower Station.
本文論述了普定水電站碾壓混凝土拱壩的設計、施工、材料和壩體溫度場的特點和研究成果。
It is very important for designers to understand the inner stresses and displacements of layered roller compacted concrete structure.
成層碾壓混凝土結構的内部應力和位移對其設計十分重要。
The aggregate used in the roller compacted concrete at Gongguoqiao hydropower station was the excavated material from underground caverns which relied on sandstone and slate.
功果橋碾壓混凝土采用的骨料為地下洞室開挖料,骨料岩性以砂岩和闆岩為主。
The Roller Compacted Concrete has different elastic constants in horizontal and ver-tical directions, because of layer by layer compaction in the construction.
碾壓混凝土由于采用逐層碾壓的施工方法,緻使所形成的大體積混凝土在豎向和水平向具有不同的彈性常數。
The selection of the admixture for its roller compacted concrete is the key to the construction of this project.
樞紐工程中的攔河壩選定全斷面碾壓混凝土重力壩,其碾壓混凝土摻合料的選擇是本工程的築壩關鍵問題。
In most conditions, it is feasible and economical to substitute Roller Compacted Concrete(RCC)for Traditional Concrete in dam construction.
多數情況下,采用碾壓混凝土代替常規混凝土是可行的、經濟的。
Based on the analysis of the seepage reasons of the roller compacted concrete, a design idea against seepage of the RCC dam is developed in this article, in which anti seepage is the stress.
在碾壓混凝土滲透成因分析的基礎上,本文提出以防為主,防排結合的碾壓混凝土壩體滲控設計概念。
Roller compacted concrete (RCC) will be used in section No. 6-No. 15 of the spillway dam, section No. 5 of the non - overflow dam near the left side bank and the left guide wall of Wan'an Project.
萬安水電站二期主體工程溢流壩6~15壩段、左岸非溢流壩5壩段和左導牆部分拟采用碾壓混凝土築壩技術。
Study on the propagation of cracks in multi-cracked body leads to a good method for studying the actual simulated gradual destroy process of roller compacted concrete dam.
多裂紋體的裂縫擴展研究為重力式碾壓混凝土壩仿真破壞過程研究提供了條件。
碾壓混凝土(Roller Compacted Concrete,簡稱RCC)是一種通過振動壓路機進行密實成型的高密度混凝土材料。其核心特點是幹硬性混凝土拌合物的低水灰比與高骨料占比,結合機械化連續攤鋪工藝,適用于大體積、高強度需求的工程場景。
從材料組成來看,RCC通常采用普通矽酸鹽水泥、粗骨料(如碎石)、細骨料(砂)及少量摻合料(如粉煤灰)混合而成。其配合比設計需滿足碾壓後的密實度要求,同時兼顧抗壓強度和耐久性。美國混凝土協會(ACI)在《ACI 327報告》中詳細規範了RCC的材料配比标準。
施工工藝方面,RCC采用分層攤鋪、振動碾壓的快速施工法。每層厚度通常控制在20-30厘米,通過10-15噸級振動壓路機進行6-8遍碾壓,形成緻密結構。這種工藝使施工效率較傳統混凝土提高50%以上,特别適合大型水利樞紐工程,例如中國三峽工程三期圍堰曾使用RCC技術實現日均澆築強度1.5萬立方米。
主要應用領域包括:
根據中國建築科學研究院的實驗數據,RCC的28天抗壓強度可達30-40MPa,滲透系數可控制在10⁻⁹cm/s量級,展現出優異的力學性能和防滲能力。但需注意,RCC對基層平整度要求較高,且不適用于需要複雜表面處理的裝飾性工程。
碾壓混凝土(Roller Compacted Concrete,簡稱RCC)是一種通過振動碾壓工藝實現密實的幹硬性混凝土材料。以下為詳細解釋:
定義與特性
RCC采用低水泥用量(通常為普通混凝土的30%-60%)和低水灰比,形成超幹硬性拌合物。其強度來源于機械振動碾壓而非傳統振搗工藝,具有施工速度快、成本低、抗壓強度高的特點。
材料組成
主要成分包括:矽酸鹽水泥、火山灰質摻合料(如粉煤灰)、砂、分級粗骨料、水及減水劑等外加劑。粗骨料粒徑需嚴格分級以保證碾壓密實性。
施工工藝
采用“薄層連續鋪築+振動碾壓”流程:
典型應用
廣泛應用于大壩(如RCC重力壩)、高速公路基層、港口堆場、機場跑道等需要高承載力和耐久性的工程。例如三峽工程三期圍堰采用RCC技術,日澆築強度達1.9萬m³。
注:更多專業參數(如配合比設計、溫控措施)可參考水利行業規範《碾壓混凝土壩設計規範》(SL 314-2018)。
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