Experimental Study On Compressive Performance Of Autoclaved Aerated Concrete Slab Wall

In recent years,with the rapid development of my country’s village and town economy and the continuous increase in the number of urban residents,the demand for new and improved housing by village and town farmers has also gradually increased.Because traditional rural houses not only have many problems that are difficult to solve for a while,such as poor earthquake resistance,poor house structure integrity,and large consumption of building resources,but also the wall panels currently produced and used in my country are also faced with high cost and production costs.A series of obstacles such as the complexity of the process,which urgently needs to come up with a new and constructive method to transform and innovate the use function of the existing house.The ALC panel structure uses the autoclaved aerated concrete panels produced and processed after technical improvement as the load-bearing wall,and uses the autoclaved aerated concrete laminate panels with special reinforcement as the floor(roof)panels,with ring beams and structural columns.formed structure.However,at present,the research on autoclaved aerated concrete in China is mainly based on blocks,and there is less research on the structure of autoclaved aerated concrete.In view of the above problems,this thesis conducts tests on the compressive performance of autoclaved aerated concrete slab walls and uses the finite element simulation analysis method to study the results.,and can also be used for reference by personnel engaged in engineering design and construction technology.The main research contents of this thesis are as follows:(1)The basic mechanical properties of the three materials constituting the autoclaved aerated concrete slab wall are firstly studied.The compressive strength and tensile strength of the autoclaved aerated concrete cube,the compressive strength of the prism axis,the compressive strength of the binder cube,and the tensile strength of the steel bar were measured.The results show that all the indexes of the material meet the standard conditions and meet the test requirements.(2)The compressive performance tests of two autoclaved aerated concrete slab walls designed with different parameters were carried out.The deformation characteristics,failure process and failure phenomenon of the two walls were compared and analyzed,and the differences and commonalities of the compressive strength,load-displacement curve,elastic modulus,peak compressive strain and Poisson’s ratio parameters of the two walls were explored.(3)The ABAQUS software was used to simulate and analyze the compressive performance of 6 autoclaved aerated concrete slab walls designed with different parameters.The results show that the finite element simulation results are in good agreement with the experimental results,and the damage characteristics of the cloud image are consistent with the observed experimental phenomena,which proves that the model is more reasonable.At the same time,the finite element simulation results also verified that the proper arrangement of transverse reinforcement at the ash joints can reduce the cracks caused by the lateral deformation of the ALC panel wall,and play a role in constraining the deformation of the wall,thereby improving the compression resistance of the wall.Bearing capacity;it is concluded that the strength grade of autoclaved aerated concrete,the adhesive strength grade and the wall thickness are important factors affecting the compressive strength of the ALC panel wall.