Experimental Investigation And Theoretical Analysis Of Bond Properties And Bending Performance On Composite Panels Of Ceramic Bamboo-reinforced Concrete

Given that the reform of wall materials and the implementation of energy conservation of building are underway, the modernization of housing has gradually received attention. Due to the advantages including environmentally friendly, energy saving, land saving steel structural houses which can be designed standardly, be manufactured in factories and be fabricated in sites have been increasingly more popular in China. At present, the cladding system is the most urgent problem which prevents the further development of steel structural houses. Bamboo reinforcement truss-ceramsite concrete composite panel satisfies the orientation of the development of new building materials, with a green, high capacity, good thermal insulation effect and so on, the market prospect of which is very broad, with good economic, environmental and social benefits.The bond and anchor between the bamboo ribs and ceramsite concrete is the basis of them working together. In this paper,69of23groups ceramsite concrete specimen were pull out to study the bonding properties of the bamboo ribs and ceramsite concrete and explore the failure modes of the specimen, analysis the impact of the reinforcement materials types, ceramsite concrete strength, bond length, reinforcement side (or diameter), notch spacing on bonding properties, providing an experimental basis for further calculation of bamboo ribs and ceramsite concrete bonded anchorage length,and the establishment of the bond-slip constitutive relationship.By the pullout experimental data obtained, referencing to the steel and FRP bars and concrete bond strength and anchorage length formula deduced by the scholars, the bamboo ribs and ceramic concrete bond strength and anchorage length formula are recommended, which provides a preliminary theoretical basis for the study of bamboo reinforcement to replace steel wire used for the composite panels.When used in steel structural houses as cladding system, bamboo reinforcement truss-ceramisite concrete composite panels can be fixed on the steel frame beam or column to bear the horizontal loads, such as wind loads and earthquake force. By the bending test on5bamboo reinforcement truss-ceramsite concrete sandwich panels, experimental study is carried out to figure out the cracks distribution and failure modes under the lateral load on such new wallboards, which verifies the bamboo ribs’ connecting role to ensure the two ceramic concrete layers work together, and the feasibility of bamboo reinforcement materials as a composite wall grid.To calculate the bending stiffness and deflection of the composite panel, the equivalent single-layer plate theory is proposed. By calculating, it is found that the equivalent single-layer plate theory can be applied to bamboo ribs tuss-ceramsite concrete sandwich panels, and the calculation results agree well with the experimental results, which provides a theoretical basis for the study and application of the new green wallboard. Test results and the theoretical analysis results are available to be referenced by steel housing research and design personnel, which is of great significance to the development of new wallboard materials.