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High temperature combustion and mechanical properties of polymer modified cement mortar

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Document pages: 10 pages

Abstract: Although polymer modified cement mortar (PCM) has been widely used as finishing and repair materials, it is necessary to understand its high temperature combustion and mechanical properties. This study evaluated the combustion characteristics under different experimental parameters, such as polymer type, unit polymer content, polymer cement ratio and sample thickness. This study also evaluated the compressive strength and elastic modulus of PCMs, focusing on the effects of polymer type, unit polymer content and polymer cement ratio. Therefore, the incombustibility order of PCM is as follows: SBR < VVA < EVA. After heating, the mass loss rate of PCM is less than 30 regardless of polymer type, unit polymer content and water cement ratioat release rate test, the higher the unit polymer content, the greater the total heat release, regardless of the difference in W C. The PAE series showed excellent fire resistance in the temperature range of 200~400°C. PCMs with a unit polymer content of 5 , modified with EVA and PAE, showed outstanding compressive strength at 200~400°C. At elevated temperature, the modulus of elasticity of PCM declined with an increase in the unit polymer content, regardless of the polymer type.

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