Nanomaterials
in Construction Industry
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In
modern construction field, most common used materials are concrete, glass,
steel and timbers. By the help of the
improvement in nanotechnology, materials at nano scale offer enhanced
properties for construction purposes. Because,
nano-materials can suddenly exhibit different properties compared to
macro-scale. For example, Carbon Nanotube, one of the important nanomaterials, indicates 150
times higher strength value and approximately six times lighter than steel.
Studies
in nano composites for improvement in cement performance are very important for
construction industry. The materials such as Nano-Titania (TiO2),
Carbon Nanotube, Nano Silica (SiO2) and Nano-Alumina (Al2O3)
can be combined with cement. These materials are densifying the matrix which
cause to increase in strength and speed chemical reactions e.g. hydration
reaction. Due to effective filling pores with nano particles, strength and durability
of the material will be improved. Therefore, nano-particles can produce a new
generation of cement composites with enhanced properties. Most important
nanomaterials with potential use in construction are Carbon Nanotube, TiO2,
SiO2, ZnO, Ag, Al2O3, ZrO2 and WO3
nanoparticles. These nano-materials can be used for different construction
purposes as in the following list.
·
Usage of Carbon nanotube instead of
steel cables in bridges.
· Nano Silica for densifying cement composites.
· Addition of resistive Carbon Nano fibers in concrete roads especially for snowy regions.
· Titania nanomaterials for producing photo catalytic concrete.
· Nano Calcite particles for protection of sealants from aggression.
· Nano Clays to improve plastic and flow characteristics of cement.
· Nano TiO2 to enhance urban air quality.
· Nano Silica for densifying cement composites.
· Addition of resistive Carbon Nano fibers in concrete roads especially for snowy regions.
· Titania nanomaterials for producing photo catalytic concrete.
· Nano Calcite particles for protection of sealants from aggression.
· Nano Clays to improve plastic and flow characteristics of cement.
· Nano TiO2 to enhance urban air quality.
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