Experimental Study On Mechanical Properties Of Glass Fiber Reinforced Polymer Cement Foam Composite Thermal Insulation Wall

Under the background of vigorously advocating "promoting building industrialization and developing green buildings" by the state,various kinds of composite thermal insulation walls emerge as the times require.Although their construction forms are various,the main thermal insulation materials of the walls are inorganic thermal insulation materials and organic thermal insulation materials.The thermal insulation performance of organic thermal insulation materials is good,but the fireproof performance is poor and easy.Aging,easy to pulverize,the production process consumes a lot of resources and energy,and produces a large number of solid and gas pollutants;inorganic thermal insulation materials have good fireproof performance,durability,chemical stability,but poor thermal insulation performance;with the increasing attention to energy conservation and environmental protection issues,the development of inorganic composite thermal insulation wall is not yet.The development direction and inevitable choice of building wall.In this paper,polymer cement foam is selected as wall insulation material.This inorganic foam cement has good fire resistance,good thermal insulation performance,environmental protection and waste benefit to a certain extent,but the strength of cement foam is low.In this paper,polymer cement foam is used as high-efficiency thermal insulation core material by composite method.With light steel keel as the skeleton and glass fiber reinforced waterproof and crack-resistant mortar as the surface layer,the three advantages complement each other,and their disadvantages overcome each other,forming a composite thermal insulation wall of polymer cement foam.In order to use polymer cement foam composite insulation wall as energy-saving building exterior wall in all kinds of buildings,the bending resistance,impact resistance and hanging force of composite insulation wall applied to exterior wall were studied according to the code.1)According to the thermal and wind loads,the structure of the wall is designed;as the outer wall of the building,it mainly bears the wind loads;the flexural bearing capacity of the composite insulation wall is studied theoretically,and the deformation calculation formula and the bearing capacity calculation formula of the composite insulation wall under the uniform distributed load are derived;and the composite insulation wall is also studied.Finite element analysis is carried out to verify the correctness and validity of the theoretical calculation.2)The flexural bearing capacity tests of three kinds of walls were carried out,and the failure phenomena of the walls under various loads were observed during the loading process,and the displacement and strain values of the characteristic points were collected and analyzed.The test results show that the flexural bearing capacity of the walls meets the requirements of the code and has great redundancy.3)The impact resistance and hanging force of composite thermal insulation wall are tested.The impact resistance and hanging force of the wall meet the requirements of the code.4)Through infrared thermal imaging scanning on both sides of the wall surface indoors and outdoors,through observing the thermal energy distribution of the wall thermal energy map,no cold bridge was found in the wall,which proved that the wall structure was reasonable,and made a good balance between the cold bridge caused by the keel bearing capacity and the cold bridge.