| Concrete block has many advantages, such as land conservation, energy-saving, use of waste, green, low cost, high strength, good ductility and so on. It is consistent with the policy of sustainable development, and represents the development direction of masonry structural materials. However, in the development process the traditional block still have some problems, such as 'hot, cracking, seepage', poor thermal performance, low-hanging capacity, the defects of the block strength index and so on.Plant fiber reinforced industrial waste slag concrete block (in this paper it uses 'plant fiber reinforced block'for short) is a concrete hollow block with plant fiber for fiber reinforced material, and with cementitious materials for cementitiousmatter, and with industrial waste slag for aggregate or with levigating industrial waste slag for admixture which is molded by mixer, vibration and compression. It is a green wall material, which has many characteristics of light quality, good thermal performance, good sound-insulated effect, high capacity hanging, more comfortable living space, and does many improvement on the deficiencies of traditional block. Especially due to the extensive use of agricultural and forestry wastes as raw materials, and using for multi-block building bearing wall, and high strength and light weight, it has great exploring significance and application prospects in the construction of small towns. However, due to the rare information in the research information of the block in domestic and foreign, the blank specification, and the lack of specific and reliable technical indicators, which are greatly hindered the application and promotion. To solve these problems, in this paper, a comprehensive and systematic test in the basic physical properties of block, and masonry mechanical properties, and the mechanical properties of hanging and finite element analysis were conducted, and reasonable suggestions were proposed. The main research methods and results were as follows:(1) In this paper, the development history and current situation and current trends in research of concrete block and the research background and significance of this subjectwere summarized, and a brief introduction for plant fiber reinforced block was given.(2) A more comprehensive test study in physical and mechanical properties of this block was conducted, and the different indicators to analyze the relationship among them was obtained, and the own laws and the influence of mechanical properties of masonry was obtained initially.(3) A comprehensive and systematic experimental study in axial compression, shear and bending tension through joints and other mechanical properties of the class of masonry was conducted, and the failure mechanism of this masonry in different force mode and the reliability of mechanical indicators and relevant influence factors were showed. Throught the comparing experimental study, the impact of its axial compressive strength under the different methods of constraint was clarified, and the damage features of shear strength in different conditions such as different properties of mortar, water absorption and masonry technique and so on were analyzed, and the influence of these factors on the shear strength was elaborated.(4) The comparing test in a single point of hanging between this block masonry walls with other block which has the same strength was done. The failure mechanism of different types of block under a single point of hanging force was deeply studied, and the value of ultimate strength was obtained. By the comparing tests, the security and superiority of the single point hanging of such masonry were illustrated.(5) Based on the existing specification in test methods of the mechanical properties of masonry, in this paper, a useful complement in test methods in tensile strength in bending test and masonry of single point hanging load was explored and made.(6) Based on experimental research, throught the theory of finite element and ANSYS software to establish separate model, the numerical simulation and comparative analysis of the nonlinear ofaxial compressive strength of masonry under different constraints were conducted. The level of its capacity and cracks in the development and stress and strain distribution and displacement deformation were studie deeply, especially the crack evolution mechanism at the micro level. The failure mechanism was analyzed seriously in theory, and interaction and impact among the component masonry materials was clarified, and the weak areas of the force was obtained, and the conclusions were drawn which were the deficiency of transverse tensile stress and the function of elastic foundation is the fundamental reason of its destruction. At the same time, this finite element analysis was consistent with experimental results, effective exploration determining the appropriate numerical methods in the masonry structure was conducted.(7) Finally, the complete study was summarized and reasonable proposal based on the results was presented, at the same time, the views in the further study on the subject of the question were put forward.This research provided the basis in reasonable production, design, construction, application and the establishment of related specifications, and instituted a similar reference.
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