Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Damping Capacity of Styrene-Butadiene Latex Admixed Concrete: A Micromechanical Study
Adequate damping capacity of concrete material is critical for concrete structures to resist impact loads. The effectiveness of styrene-butadiene latex as a polymer admixture for improving the vibration reduction capacity of concrete matrix is evaluated in this study by using a micromechanical-based numerical approach aided with laboratory experimental work for determining material parameters and validating a developed numerical model. By using the discrete element method (DEM), a user-defined three-dimensional (3D) model was developed to study the dynamic flexural responses of styrene-butadiene latex admixed concrete in the loss tangent, storage modulus, and loss modulus at three loading frequencies: 0.2, 1, and 5 Hz and a typical ambient temperature: 25°C. The 20% usage of styrene-butadiene latex, by weight of cement, was found to favorably enhance the storage and loss moduli and the loss tangent of concrete. Results from this combined numerical and experimental study can be expected to benefit the design of more resilient concrete materials and structures.
Damping Capacity of Styrene-Butadiene Latex Admixed Concrete: A Micromechanical Study
Adequate damping capacity of concrete material is critical for concrete structures to resist impact loads. The effectiveness of styrene-butadiene latex as a polymer admixture for improving the vibration reduction capacity of concrete matrix is evaluated in this study by using a micromechanical-based numerical approach aided with laboratory experimental work for determining material parameters and validating a developed numerical model. By using the discrete element method (DEM), a user-defined three-dimensional (3D) model was developed to study the dynamic flexural responses of styrene-butadiene latex admixed concrete in the loss tangent, storage modulus, and loss modulus at three loading frequencies: 0.2, 1, and 5 Hz and a typical ambient temperature: 25°C. The 20% usage of styrene-butadiene latex, by weight of cement, was found to favorably enhance the storage and loss moduli and the loss tangent of concrete. Results from this combined numerical and experimental study can be expected to benefit the design of more resilient concrete materials and structures.
Damping Capacity of Styrene-Butadiene Latex Admixed Concrete: A Micromechanical Study
Pan, Tongyan (Autor:in) / Melgar, Christie (Autor:in) / Robinson, Troy (Autor:in)
Journal of Materials in Civil Engineering ; 24 ; 1237-1244
03.02.2012
82012-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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