Micro-Mechanical and 3D Fractal Analysis, Durability, and Thermal Behaviour of Nano-Modified Cementitious Lightweight Composites for Building Facades
نویسندگان
چکیده
There are increasing research endeavours on the application of nanotechnology in construction industry and lightweight composites. In this study, influence different percentage (1%, 2%, 3% by weight cement) colloidal nano-silica particles mechanical, thermal, durability properties cementitious composites was studied through measurement compressive strength, flexural response, micro-hardness measurement, pore structure analysis, thermal conductivity, water permeability, chloride penetration. Moreover, 3D X-ray Compute Tomography together with digital image analysis fractal used to characterize nano-silica, micro-structures, fracture surfaces. The experimental results show that incorporating resulted a mechanical strength increase up 45.4 % permeability migration decrease 51.2% 48.2%, respectively. micro-structural also indicated dense, flaw-free, thus more resistant, interfaces micro-cracks were formed greater dimensions obtained content. Finally, views confirmed clusters well interconnected which further carrying capacity reducing heat flow.
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ژورنال
عنوان ژورنال: Buildings
سال: 2021
ISSN: ['2075-5309']
DOI: https://doi.org/10.3390/buildings11030085