| After the frequent earthquake disasters and the continuous deepening of urban construction,a large number of construction waste will be produced.The disposal of these garbage not only occupies a large amount of land resources,but also often pollutes the environment very much in the process of treatment.In the 13th Five-Year Plan,it is proposed to speed up the construction of the system of harmless treatment and utilization of urban construction wastes,promote the integration and utilization of resources,and vigorously develop the bad economy.Therefore,how to make effective use of construction waste,especially recycled waste concrete,and improve its strength performance is a great challenge to our society at present,and also an important direction of concrete research in the future.The Transverse of recycled concrete proposed in this paper Hole hollow block is a new type of masonry,which can solve the problems of leakage,seepage,crack,secondary maintenance and so on.It has the advantages of high efficiency and waste,energy saving and environmental protection.In order to put these new masonry structures into use,both theoretical analysis and experimental study are needed.In this paper,the compressive performance of the recycled concrete hollow block wall with horizontal hole is studied under the existing theoretical results.The specific work is as follows:(1)the compression test of the block,the standard compressive masonry specimen made of the block and the mortar used in the masonry wall are carried out.The corresponding mechanical properties of materials were obtained.(2)the resistance of 6 pieces of wall was carried out.The crack development and failure patterm of three axial compression specimens and three eccentric compression specimens are obtained by experimental study on compression performance.The influence of eccentricity on the compression performance of wall is analyzed.(3)according to the test data,the test results of axial compression wall with different ratio of height and thickness are analyzed,and the crack development,failure mode and cracking load of wall are studied.The influence of ultimate load,out-of-plane displacement,vertical deformation and stability.(4)according to the existing codes,the ultimate bearing capacity of the wall is calculated and compared with the test value.And for the traditional norm formula,The calculation formula for recycled concrete hollow block wall with horizontal hole is obtained. |
