Study On The Foamed Concrete Insulation Material With Rosin Rubber Foaming Agent

It’s more important to pay attention to development and application of energy-efficient building materials, with the development of economic and social in our country.The foamed concrete with good performance of light weight, thermal insulation, heatinsulation, refractory and sound insulation have got more and more applications in theconstruction industry. The performance of foamed concrete is influenced by variousfactors, such as the raw material of the cement, foaming agent and other supplementarymaterial, foam concrete mix, etc. Therefore, an in-depth study of the blowing agents, aswell as foamed concrete is necessary.This article mainly has done a series of experimental research on preparation ofrosin glue foaming agent technology, the relation between the the mixing ratio, theadmixture and the performance of foamed concrete, and also made a simple analysisbetween the pore structure and the performances of the foamed concrete. This papercarries out a detailed study from the following:(1) Explore the synthetic process of the rosin rubber foaming agent throughcontrolling the temperature, alkali purity, concentration and sodium dodecyl sulfate. Theresults show that, rosin and alkali content paly a decisive role on saponification reactionand the best temperature is100℃in the preparation process of rosin rubber foamingagent. Alkali purity above80%has no obvious influence on the foam performance.When the foaming agent and water is mass ratio of1:20dilution, the performances offoam and foamed concrete all are good with mixing equipment in certain condition. Thebest dosage of Sodium dodecyl sulfate is4.5g every500ml foaming agent that cangreatly improve the stability of foam.(2) The best raw materials mix for madding foamed concrete through experiment is:the feed ratio of water was0.54, the foam dosage was750ml, adding30%fly ash,0.5%polyvinyl alcohol,1.0%polypropylene fiber and0.6%water repellent. Amongthem, the above several factors both influence the28days compressive strength offoamed concrete, especially the polypropylene fiber having the obvious enhancementeffect. Relatively the feed ratio of water, the foam and fly ash dosage greater influencethe dry density of foamed concrete.The feed ratio of wate, the foam and water repellentdosage have a direct effect for the water absorption of foamed concrete.(3) This paper analyzes the relation between the foam microstructure and foamedconcrete, discussing the effects between pore structure and mechanical properties andThermal behavior of the foam concrete, summarizing the best pore structurecharacteristic of foamed concrete.