Experimental Study On Physical And Mechanical Properties Of Alkali-resistant Glass Fiber Reinforced Ceram Foamed Concrete And Its Application

With the rapid economic development,the exploitation and utilization of resources,energy conservation,waste,green,and environmental protection have become the overall requirements for building energy conservation and green development in the new era.As a new type of green building material,foamed concrete can be mixed with a large amount of industrial waste such as fly ash and slag.It can also be mixed with ceramics,alkali-resistant glass fiber and other materials to improve its physical and mechanical properties and reduce costs.Foam concrete products can be used as walls,roof insulation materials and building non-load bearing structural materials,etc.,and have broad application prospects.The purpose of this paper is to provide theoretical support for the further application of ceramsite foam concrete through the design of the mixture ratio of alkali resistant glass fiber reinforced ceramsite foam concrete,the study of the factors affecting the physical and mechanical properties and the practical exploration of the practical project.In this study,cement,fly ash,ceramsite,fine sand,and alkali-resistant glass fiber were used as raw materials.Foam made from animal protein foaming agent was added to produce foam concrete specimens with a dry density grade of B08.Firstly,single factor tests were conducted to study the ratio of water to material,the replacement amount of fly ash,the amount of ceramsite and fine sand,and the amount of foam on the dry density,cubic compressive strength,and water absorption of foam concrete.Influencing laws,and determining the content range of each material: ratio of water to material 0.35-0.45,replacement amount of fly ash 5%-15%,ceramsite dosage 10%-20%,fine sand content 5%-15,foaming agent dosage is 3% to 4%.Then four factors and three levels of orthogonal test were used to study the effect of each material content on the compressive strength,split tensile strength,axial compressive strength,and thermal conductivity of the cube.The results are as follows:(1)The primary and secondary orders that affect the compressive strength of ceramsite foam concrete are: foaming agent dosage > ratio of water to material > ceramsite content> fly ash substitution;(2)affecting the tensile strength of ceramic foam concrete The primary and secondary order is foaming agent dosage >ceramics content> ratio of water to material >replacement amount of fly ash;(3)The order of primary and secondary influence on thermal conductivity of ceramic foam concrete is fly ash content> ratio of water to material >ceramics Dosage> foaming agent dosage.Under the premise of economic considerations,the optimum mix ratio was determined to be A1B1C2D1: ratio of water to material was 0.35,the amount of fly ash replaced was 5%,the amount of ceramsite was 15%,the amount of fine sand was 10%,and the foaming agent dosage was 3%.Finally,on the basis of the best mix ratio,add alkali-resistant glass fiber,determine the effect of the content of cubic fiber compressive strength,splitting tensile strength and thermal conductivity,determine the best dosage range of 1% to 2%.The best formula of alkali resistant glass fiber reinforced ceramsite foam concrete can be obtained,which can be widely applied in practical application.The new type of green building material is applied to the actual project,and a light steel lightweight concrete structure system is designed in combination with the assembly type low level building.The rural assembled lightweight steel foam concrete public toilet(public toilet)is built at the demonstration point of this project.