Keywords concrete cracking stress condition mass transport computational methodsCurrently, the durability of cement-based composites is primarily influenced by the presence and transport of corrosive fluids. In structural concrete, various factors such as mechanical loads and drying shrinkage can lead to the formation of cracks, which adversely affect its transport properties. While there is some consensus regarding the impact of individual cracks on transportation, our understanding of crack networks remains relatively limited. Furthermore, the maintenance of stress within the concrete can alter its porosity and influence the opening and closing of cracks, thereby affecting its transport properties. Due to limitations in experimental methods, characterizing the geometry of crack networks poses a challenge. However, numerical modeling offers an efficient and practical approach to investigate the impact of cracks, particularly microcracks, on the diffusivity of concrete.
Abstract. With the development of materials and technology, new composite materials which can meet the requirement of new technology are produced, especially in some harsh conditions where traditional materials cannot meet the needs. In this paper, a new type of syntactic foam pressure part is studied, simulate and calculate the impact of load stress and breaking type by finite element analyze. The results of experiment are same as the calculation. A method is established in this paper to provide a reference and research ideas for the similar products.
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