Analysis Fireproof Techniques Of The External Thermal Insulation System

In recent decades, while exterior insulation technology have made outstandingcontributions for China’s building energy efficiency, but also with a lot of questions, the mostprominent is the fire problem. Exterior insulation fire caused huge losses to people’s lives andproperty, Therefore, strengthening the fire resistant of external wall insulation systemtechnology has a very important significanceThis paper analyzes a typical case of fire wall insulation abroad, found EIFS organicinsulation material is the main cause of fires. after several tests and theoretical analysisexperts proposed surface fire protection, fire protection isolation and no cavity structure areeffective measures to improve the fire performance insulation system. Rockwool insulationmaterial with non-combustible temperature, low thermal conductivity characteristics, externalthermal insulation composite system can effectively reduce the role of the external flameinsulation system, This paper proposed a new external insulation fireproof constructionmethod EPS rock wool composite panel based on the above theory and exterior insulationsystem fire Test Method and doing experimental research and numerical simulationExperimental study content: explore the impact on fire performance of composite panelsof different thickness rock wool when the thickness of EPS board is the same, The resultsshowed that the ability of new fireproof rock wool composite panels EPS insulation systemfire resistance was far greater than the no composite rock wool insulation systems, whilewithin a certain range the ability of the composite rock wool insulation system fire resistancewould gradually increase. with the increasing in the thickness.Simulation: In this paper, the ABAQUS finite element software analysis the temperaturefield of EPS rock wool composite panels under the simulated fire. By analyzing the effect ofcomposite panels under fire temperature field contours, refractory period and thecorresponding temperature-time curve to determine the fire resistance of external thermalinsulation composite panel system Studies have shown that the refractory period of no fireresistant composite rock wool insulation system was significantly lower than the compositerock wool insulation system, the rate of temperature change is relatively large, While at thesame time to fire, heat distribution area of no composite rock wool board insulation systemwas significantly greater than the composite rock wool board insulation system.By summarizing the theoretical analysis, experimental study, and the results of numericalsimulation have found that EPS rock wool composite panels can well improve the fireresistance of EIFS, It’s a good value in improving the fire protection of exterior insulation.