Research into the load bearing behaviour of light construction concrete slabs made by using Cross-Channel-Technology

cc技术是一种生产由木材制成的结构几何形状板的方法，在建筑产品中被称为管状刨花板或空心芯刨花板。CC技术的名称来自交叉通道技术，描述的是板材中有规则间隔的几何内部交叉通道。与具有相同厚度的固体板相比，这种系统空腔可显著减轻重量。由于特殊的几何形状，生产是通过组装半板来完成的。相交的接触面是由有规则重复的半通道形成的，因此，两个半部分可以通过一个连接器的投影相互连接，称为“驼峰”在一半上到下一半上的匹配槽。将这种技术应用于混凝土面板的想法具有巨大的潜力，例如，这种方法可以用于生产轻质混凝土墙、天花板和立面元素。本研究的目的是对细混凝土（水泥和沙子，不含砾石）CC板作为普通建筑产品（如天花板和墙板）的承载能力进行系统研究。也可以引入CC板的分类，例如类似于Ortlepp为纺织钢筋混凝土引入的术语，其中L代表“孔尺寸”，k_eff是孔面积比的因素，截面（A_L）和总面积（A_b）的对称性。主要焦点转向使用细混凝土（例如Pagel TF-10 TUDALIT）来生产约8厘米厚的立面板（如果天花板和墙板厚度约为20厘米，则使用普通钢筋混凝土）。由于CC板的基本行为尚不清楚，这些过程应该用适当的承载和破坏模型来描述。目前还没有足够的关于基本结构行为的信息；因此，数值模拟本身不足以反映复合材料中效应的复杂性。除了理论研究外，还计划进行广泛的实验测试程序，通过研究静载荷下小尺寸试件的行为来校准计算模型。在研究的实验部分，应该测试不同的CC板，有和没有不同形状（例如有和没有开口）和厚度的钢筋。最终的分析模型可以在CC板的组合荷载作用下进行独立全尺寸试验后得到认可。

The CC-technology is an approach to producing structural geometric shaped plates made of wood, which in construction product are known as Tubular chipboard or Hollow Core Chipboard. The name of CC technology comes from cross-channel technology and describes the geometric inner cross channels at regular intervals in the plate. This systematic cavities lead to significant weight reduction when compared to solid plates having the same thickness. Because of especial geometry, the production is done by assembling the halves of plate. The intersecting contact surface is formed by regularly repeating half-channels, therefore , the two halves can be jointed to each other by projection of one connector, called the "humps" on one half into a matching groove on the next half. The Idea of transmission this technology to producing concrete panels has enormous potential for example this method can be implemented for production of light walls, ceiling and facade elements made of concrete. The aim of this research is the methodical study on the load carrying capacity of CC plates of fine concrete (cement and sand, no gravel) as normal construction product such as ceilings and wall panels. Also classification of the CC plate can be introduced, for example similar to the terms which are introduced by Ortlepp for textile-reinforced concrete, in which L stands for "hole dimension" k_eff is factor from the ratio of hole area, of the symmetry of section (A_L) and gross area (A_b). The main focus is turned to use of fine concrete (e.g. Pagel TF-10 TUDALIT) for the production facade panels of about 8 cm thickness (in case of ceiling and wall panels thickness of about 20 cm normal reinforced concrete is to be used). Since the basic behavior of CC plates is not known yet, the processes should be described with an appropriate bearing and failure model. Currently sufficient information for the basic structural behavior does not exist; therefore numerical simulation itself is not enough to represent the complexity of effects in the composite materials. In addition to theoretical studies, an extensive experimental test program is planned to calibrate the calculation models by investigating the behavior of small-scale specimens under static load. In experimental part of research different CC plates, with and without reinforcement with varying in shape (e.g. with and without openings) and thicknesses should be tested. The final analytical model could be approved after independent full-scale tests on CC plates under combination of loads.