苏州混凝土水泥制品研究院有限公司

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发布时间:2020-01-06 00:00:00
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房建材料及制品

新旧混凝土叠合面抗剪性能研究
新旧混凝土叠合面抗剪性能研究
  • 陈甫亮1,胥 卉2,廖桢颖1,王韶纤2,李俊杰1,陈 俊2
2020年第10期
摘要
引用本文
摘   要:新旧混凝土叠合面的剪切强度是衡量界面黏结性能的最重要指标。基于Z形黏结试件剪切试验,研究了不同叠合层材料、不同界面处理方式、不同槽口形式下的叠合界面抗剪性能。结果表明,UHPC试件表现出较好的界面抗剪能力,其承载力均高于自密实试件。对于槽口构件,槽口连接形式能提高叠合面抗剪承载力,其中梯形槽口对界面抗剪承载力提升效果更为显著。槽口形式对UHPC材料与C30混凝土界面抗剪能力的影响相较于其对自密实材料与C30混凝土界面抗剪能力的影响更为显著。对于有锚固钢筋的试件,增大锚固钢筋的锚固长度可以提高UHPC材料与C30混凝土界面抗剪能力;对于无锚固钢筋无槽口试件,气泡纸粗糙面处理可以改善UHPC试件的变形能力。 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.
陈甫亮,胥卉,廖桢颖,等.新旧混凝土叠合面抗剪性能研究[J].混凝土与水泥制品,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.
灰缝厚度对蒸压加气混凝土砌块墙体热工性能的影响
灰缝厚度对蒸压加气混凝土砌块墙体热工性能的影响
  • 肖力光,邢纹浩
2020年第10期
摘要
引用本文
摘   要:基于Ansys Workbench热力学模块对蒸压加气混凝土外墙传热模式进行了分析,并对研究单元进行建模,确定了模型边界条件及荷载加载形式。通过对3 mm、20 mm等不同厚度砌筑灰缝进行建模研究,探讨了不同灰缝厚度情况下,蒸压加气混凝土砌块墙体温度的分布情况。结果表明,薄灰缝砌筑可以显著减少蒸压加气混凝土砌块墙体的“微热桥效应”,从而降低墙体热量流失。灰缝散失的热量占墙体总散失热量百分比y与灰缝厚度x的关系为: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,邢纹浩.灰缝厚度对蒸压加气混凝土砌块墙体热工性能的影响[J].混凝土与水泥制品,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.
预制夹心混凝土墙板热工性能研究
预制夹心混凝土墙板热工性能研究
  • 张佳阳,路国忠,郭振雷,尹志芳
2020年第10期
摘要
引用本文
摘   要:通过研究不同种类及厚度的夹心保温材料、拉结件布置数量及保温板缝隙宽度,分析了其对预制夹心混凝土墙板传热系数的影响。结果表明:夹心层保温材料导热系数越小、夹心层越厚,预制夹心混凝土墙板传热系数越小;非金属拉结件对夹心墙板传热系数的影响约为1.3%~3.2%,夹心层厚度越厚,墙板传热系数越小,拉结件影响越大;夹心层保温板采用定制式保温板可有效降低保温板缝隙对预制墙板传热系数的影响,计算结果可为预制夹心墙板的热工设计提供依据。 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.
张佳阳,路国忠,郭振雷,等.预制夹心混凝土墙板热工性能研究[J].混凝土与水泥制品,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.
高性能轻质混凝土复合外墙围护部品 研究与应用
高性能轻质混凝土复合外墙围护部品 研究与应用
  • 孙源泽1,蒋勤俭1,刘 昊2,吕丽萍2,黄清杰1
2020年第10期
摘要
引用本文
摘   要:装配式钢结构住宅建筑正逐渐成为我国装配式建筑的重要组成部分,其外墙围护部品很难同时满足轻质、防水、防火、耐久以及与门窗、保温集成一体等高性能要求,限制了其快速、高质量发展。为解决钢结构住宅外墙围护部品性能不高的问题,通过研究外墙围护部品的材料、墙板、配件以及建筑、结构设计等,研发了一种满足钢结构住宅高性能要求的轻质混凝土复合外墙围护部品,并成功应用到了相应的工程中。 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.
孙源泽,蒋勤俭,刘昊,等.高性能轻质混凝土复合外墙围护部品研究与应用[J].混凝土与水泥制品,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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