INTECIN   20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Micro-Scale Thermal Simulations Of Cement Pastes Containing Microencapsulated Phase Change Materials (MPCM)
Autor/es:
UKRAINCZYK N. ; MANKEL C,; KOENDERS E.A.B.; CAGGIANO A., ; YANG S.,
Lugar:
Delft
Reunión:
Conferencia; RILEM-week 2018; 2018
Resumen:
This work presents the current research activities running at the Institute of Construction and Building Materials (WiB) of TU Darmstadt and is with the investigation of advanced coupling of two physical mechanisms represented by a heat problem and microstructural heterogeneities of cement-based composites. Particularly, the thermal response of those pastes, along with occurring phase change phenomena will be simulated at the microscale level. A virtual 3D porous microstructure with embedded Microencapsulated-(M)PCMs, which are created with available hydration models, provide a fundamental basis for the analysis of the morphological influence on the effective thermal diffusion parameters. The current work is based on investigating the influence of the morphological effect on the thermal properties of hydrating cement paste systems by using an available cement hydration and microstructure development model, combined with MPCMs. Laboratory characterization of MPCMs and MPCM-pastes were also performed using several test methods. The thermal performance of cement paste systems with and without PCMs were experimentally evaluated at WiB of TU Darmstadt, and are used for benchmark and calibration purposes. Specifically, the specific heat capacity of PCM-concrete, measured through DSC tests and thermal conductivity ones, obtained through numerical simulations, were taken as reference for validating the experimental results.