房建材料及制品_2020_《混凝土與水泥制品》雜志社

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房建材料及制品

新舊混凝土疊合面抗剪性能研究

陳甫亮1，胥卉2,廖楨穎1，王韶纖2,李俊杰1，陳俊2

2020年第10期

摘要

引用本文

摘 ? 要：新舊混凝土疊合面的剪切強度是衡量界面黏結性能的最重要指標?；赯形黏結試件剪切試驗，研究了不同疊合層材料、不同界面處理方式、不同槽口形式下的疊合界面抗剪性能。結果表明，UHPC試件表現出較好的界面抗剪能力，其承載力均高于自密實試件。對于槽口構件，槽口連接形式能提高疊合面抗剪承載力，其中梯形槽口對界面抗剪承載力提升效果更為顯著。槽口形式對UHPC材料與C30混凝土界面抗剪能力的影響相較于其對自密實材料與C30混凝土界面抗剪能力的影響更為顯著。對于有錨固鋼筋的試件，增大錨固鋼筋的錨固長度可以提高UHPC材料與C30混凝土界面抗剪能力；對于無錨固鋼筋無槽口試件，氣泡紙粗糙面處理可以改善UHPC試件的變形能力。 Abstract: The shear strength of old and new concrete combined interface is the most important index to measure the interfacial bonding property. Based on the shear test of z-shaped bonding specimens, the shear resistance of composite interface with different laminated materials, different interface treatment methods and different notches was studied. The results show that the UHPC specimens exhibit good interface shear resistance and their bearing capacity is higher than that of self-compacting specimens. For the notched specimens, the notched joint can improve the shear strength of the composite surface, among which the trapezoidal notched joint has more significant effect on the shear strength of the interface. The influence of notch form on the shear resistance of UHPC material and C30 concrete interface is more significant than that of self-compacting material and C30 concrete interface. For the specimens with anchorage reinforcement, increasing the anchorage length of the anchorage reinforcement can improve the shear resistance of the interface between UHPC material and C30 concrete. For non-anchorage steel bar notched specimens, bubble paper rough surface treatment can improve the deformation capacity of UHPC specimens.

陳甫亮,胥卉,廖楨穎,等.新舊混凝土疊合面抗剪性能研究[J].混凝土與水泥制品,2020(10):75-79. CHEN F L,XU H,LIAO Z Y,et al.Research on the Shear Resistance of Combined Interface of New and Old Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):75-79.

灰縫厚度對蒸壓加氣混凝土砌塊墻體熱工性能的影響

肖力光，邢紋浩

2020年第10期

摘要

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摘 ? 要：基于Ansys Workbench熱力學模塊對蒸壓加氣混凝土外墻傳熱模式進行了分析，并對研究單元進行建模，確定了模型邊界條件及荷載加載形式。通過對3 mm、20 mm等不同厚度砌筑灰縫進行建模研究，探討了不同灰縫厚度情況下，蒸壓加氣混凝土砌塊墻體溫度的分布情況。結果表明，薄灰縫砌筑可以顯著減少蒸壓加氣混凝土砌塊墻體的“微熱橋效應”，從而降低墻體熱量流失?；铱p散失的熱量占墻體總散失熱量百分比y與灰縫厚度x的關系為：y=0.946x+3.247。 Abstract: Based on the thermodynamics module of Ansys Workbench, the heat transfer mode of the outer wall of autoclaved aerated concrete was analyzed, and the research unit was modeled to determine the boundary conditions of the model and the form of load loading. Through the modeling study of masonry mortar joints with different thickness such as 3 mm and 20 mm, the temperature distribution of autoclaved aerated concrete block walls with different thickness of mortar joints was discussed. The results show that the thin mortar joint masonry mortar plays a positive role in reducing the "micro-thermal bridge effect" of autoclaved aerated concrete block wall and reducing the heat loss of wall. The relationship between the ratio of heat loss from ash joints to total heat loss from wall(y) and the thickness of mortar joints (x) is y=0.946x+3.247.

肖力光,邢紋浩.灰縫厚度對蒸壓加氣混凝土砌塊墻體熱工性能的影響[J].混凝土與水泥制品,2020(10):72-74,79. XIAO L G,XING W H.Effect of Different Thickness Mortar Joints on Thermal Performance of Autoclaved Aerated Concrete Block Wall[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):72-74,79.

預制夾心混凝土墻板熱工性能研究

張佳陽，路國忠，郭振雷，尹志芳

2020年第10期

摘要

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摘 ? 要：通過研究不同種類及厚度的夾心保溫材料、拉結件布置數量及保溫板縫隙寬度，分析了其對預制夾心混凝土墻板傳熱系數的影響。結果表明：夾心層保溫材料導熱系數越小、夾心層越厚，預制夾心混凝土墻板傳熱系數越??；非金屬拉結件對夾心墻板傳熱系數的影響約為1.3%～3.2%，夾心層厚度越厚，墻板傳熱系數越小，拉結件影響越大；夾心層保溫板采用定制式保溫板可有效降低保溫板縫隙對預制墻板傳熱系數的影響，計算結果可為預制夾心墻板的熱工設計提供依據。 Abstract: By studying the sandwich insulation layer of different types and thicknesses, the number of connectors and the gaps of insulation boards, the effects of the heat transfer coefficient on prefabricated concrete sandwich wallboard were analyzed. The results show that the lower thermal conductivity and the thicker the sandwich insulation layer, the smaller the heat transfer coefficient of prefabricated concrete sandwich wallboard. The effect of non-metallic connectors on the heat transfer coefficient of the sandwich wallboard is about 1.3%~3.2%, and the thicker sandwich insulation layer, the samller the heat transfer coefficient of the sandwich wallboard, and the greater the influence of connectors. Customized sandwich wallboard, which can effectively reduce the effect of insulation board gap on the heat transfer coefficient of prefabricated sandwich wallboard. The calculation results can provide an evidence for the thermal design of prefabricated sandwich wallboard.

張佳陽,路國忠,郭振雷,等.預制夾心混凝土墻板熱工性能研究[J].混凝土與水泥制品,2020(10):69-71. ZHANG J Y,LU G Z,GUO Z L,et al.Study on Thermal Performance of Prefabricated Concrete Sandwich Wallboard[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):69-71.

高性能輕質混凝土復合外墻圍護部品研究與應用

孫源澤1，蔣勤儉1，劉昊2，呂麗萍2，黃清杰1

2020年第10期

摘要

引用本文

摘 ? 要：裝配式鋼結構住宅建筑正逐漸成為我國裝配式建筑的重要組成部分，其外墻圍護部品很難同時滿足輕質、防水、防火、耐久以及與門窗、保溫集成一體等高性能要求，限制了其快速、高質量發展。為解決鋼結構住宅外墻圍護部品性能不高的問題，通過研究外墻圍護部品的材料、墻板、配件以及建筑、結構設計等，研發了一種滿足鋼結構住宅高性能要求的輕質混凝土復合外墻圍護部品，并成功應用到了相應的工程中。 Abstract: The prefabricated steel structure residential buildings are gradually becoming an important part of prefabricated buildings in China. However, it is difficult to meet all high requirements of lightweight, waterproofing, fire prevention, durability and integration with doors, windows and insulating layer, which limits the rapid and high-quality development of steel structure residential buildings. In order to solve the problems of low performance, through studying the materials, accessories, construction and structural design of external wall enclosure components, a new lightweight concrete composite exterior wall enclosure component that meets the high performance requirements of steel structure residential buildings is developed, and successfully applied to corresponding projects.

孫源澤,蔣勤儉,劉昊,等.高性能輕質混凝土復合外墻圍護部品研究與應用[J].混凝土與水泥制品,2020(10):65-68. SUN Y Z,JIANG Q J,LIU H,et al.Research and Application of High Performance Lightweight Concrete Composite Exterior Wall Enclosure Components[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):65-68.

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