Frame Structure Building Envelope Thermal Insulation Composite Wall Panels And The Associated System

This research studies on cladding thermal insultation composite wallboard andsystem of muti-storey and small high-rise framework structure residence and publicconstructions. And it carries on the experimental study on insulation layer material,adhesive property of covering layer and insulation layer, and overall mechanicalbehavior and thermal performance of composite walboard. Meanwhile it analyses thebearing capacity of composite wallboard by the ANSYS program.Polystyrene particles insulation mortar is characterized by good insulation,strong durability and weather resistance, low cost, and environment protection andengry saving.The insulation layer material of framework structure claddinginsulation composite wallboard is polyhenyl granule thermal mortar in this researchthat serves as determining the best type and dosage, optimizing mixture ratio andimproving the comprehensive performance of composite wall insulation materials,bystudying the influence of different components on performance of insulationmortar.Experiments of EPS particles obtained from recycled broken, EPS grain sizedistribution of different dosage of the influence of the thermal performance ofinsulation mortar has carried on the experimental study.The Experiment resultindicates that different gradation improves the porosity of mortar and reduces thecoefficient of thermal conductivity; In the best case, the dosage of EPS particle andpowder materials of dosage ratio of1:9, it reaches the lowest thermal conductiviy;dry apparent density of thermal insulation mortar affects the size of the internal poresize, and determines the coefficient of thermal conductivity,the result of which showsthat thermal conductivity reaches the lowest with200kg/m3dry apparent density. Atthe same time it analyses that different dry apparent density affects the performanceof thermal insulation mortar antifreeze, the result of which shows that there is a closerelationship between thermal insulation mortar of frost resistance and dry apparentdensity, and pore structure determines the resistance of antifreeze, when dry apparentdensity becomes lower, mass loss and strength loss rate increased significantly.Influence on the mechanical properties of insulation mortar by changing thestrength grading of cemen has carried on the experimental study. Strength grading of cemen has a great influence on mechanical properties of the thermal insulationmortar, and compressive strength, flexural strength and tensile bond strengthincrease with the increase of that of cement. The former increases obviously, thelater two slowing down.Influence on the mechanical properties of insulation mortar by adding modifiedadditives to dispersed emulsion powde and cellulose ether’s has carried on theexperimental study. The increase ofcellulose ether dosage improves water retention,workability and flexibility of thermal mortat, and decreases the compressive strengthsignificantly, and the flexural and tensile bond strength smally; the increase ofrubber powder causes slight decrease of compressive strength of mortar, smallincrease of flexural strength, and significant increase of tensile bond strength.It discusses the influnce on shrinkage performance and mechanical performanceof polyphenyl granule thermal mortar by adding polypropylene fiber and expansionagent. The increase of polypropylene fiber length and content causes that shrinkageof the mortar decreases gradually and the effect of long fiber reinforced is better thanthat of short fiber; the increase of dosage of expansive agent causes that thermalshrinkage of mortar decreased gradually, but the heat preservation mortarcompressive flexural tensile bond strength decreasedThe analysis of the microstructure ofthernal mortar by scanning electronmicroscope ascertains that the caking property of modification of polystyreneparticles and cement matrix, content and distribution of rubber powder, and thedispersion and the length of polypropylene fiber the essence of the development toheat preservation mortar performance reasons is the essence of development of theperformance of thermal mortar, which provides the basis for theoretical analysis.Experiment in new-type prefabricated retaining insulation composite wallboardhas carried on the study of overall mechanical properties. It investigates crack loadcracking load, ultimate load, load deflection, damage location and load strainrelationship of different height to width ratio of composite wallboard under the actionof static. According to experiments and analysis of the ANSYS finite elementnonlinear the cracking load, limit load wallboard and wire stress and strain are calculated, which is compared with the experimental results.Thermal performance study on thickness of different thermal insulation layerand different levels of wire connection composite wallboard, to meet therequirements of energy saving65%, various factors that affect the performance ofcomposite wallboard thermal are concluded by experiment and theory of heattransfer coefficient.These experimental researches intend to further optimize thedesign of the structure of composite wallboard. Finally, new enclosure insulationcomposite wall in frame structure housing structure connected to the other artifactshas been studied and node drawing has been made, which lay a foundation formarket promotion of frame structure cladding insultation composite wallboard.