Studi ini membandingkan dampak lingkungan dari produksi campuran aspal hangat (Warm Mix Asphalt -WMA) dimodifikasi polimer EVA dengan dosis 5% berat bitumen melalui metode pencampuran kering (dry mixing) dengan campuran aspal panas (Hot Mix Asphalt -HMA) standar pada skala laboratorium menggunakan metode Life Cycle Assessment (LCA,) dengan lingkup dari akuisisi bahan baku hingga produksi di laboratorium aspal Universitas Pelita Harapan. Kajian ini menggabungkan database CML-IAMidpoint dan Eurobitume serta pengukuran emisi di laboratorium. Hasil pengukuran menunjukkan penurunan pada suhu produksi WMA menghasilkan emisi CO2 dan Volatile Organic Compound (VOC)
The paper establishes a computationally inexpensive method to deal with the dynamic response of liquid storage tanks subjected to seismic excitation including dynamic soilstructure interaction. The tank is modelled as a thin shell, the stored liquid is described as an inviscid and incompressible fluid and the soil medium is modelled as an elastic continuum. The dynamic response of the tank-liquid-soil system is derived in the frequency domain using dynamic substructuring and mode matching. The tank vibrations are first expressed in terms of the in-vacuo shell modes while the liquid motion is described as a superposition of linear potentials. The soil reaction to the plate of the tank is derived on the basis of a boundary integral formulation with the excitation field being the seismic free-field ground motion. Due to its high computational efficiency, the proposed method is suitable when a large number of simulations is required as is the case in seismic risk analysis. It overcomes the limitations of most mechanical analogues used nowadays, while at the same time maintains an accuracy comparable to that of finite element models within a fraction of the computation time of the latter.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.