46 documents found, page 1 of 5

Health hazards implication for household solid waste collectors of north city c...

Solid waste management has been one of the challenging tasks for the waste collectors at Dhaka North City corporations, especially during the post-COVID-19 period, since this task exposes several acute and chronic illnesses. The perilous implications of waste collection on the health condition of the waste collectors at the Dhaka North City Corporation (DNCC) have often been ignored, and they have to work witho...

Development and characterization of novel auxetic structures based on re-entran...

This paper reports the first attempt of developing macro-scale auxetic structures based on re-entrant hexagon design from braided composite materials for civil engineering applications. Braided composite rods (BCRs) were produced and arranged as longitudinal and horizontal elements to produce three types of auxetic structures: (1) basic re-entrant hexagon structure, (2) basic structure modified by adding straig...

Comparative studies on the processing and performance of carbon nanotube and na...

The present research compares the processing and various properties of carbon/epoxy multiscale composites developed incorporating vapor-grown carbon nanofibres (VCNFs) and single-walled carbon nanotubes (SWCNTs). CNFs and SWCNTs (0.5-1.5 wt. %) were dispersed within epoxy resin using a combination of ultrasonication and mechanical stirring in the presence of a non-ionic surfactant and the nanomaterial/resin dis...

Self-sensing Hybrid Composite Rod with Braided Reinforcement for Structural Hea...

Enhancing the performance and lightness of different structures has already been achieved by the employment of fibre reinforced composite materials. Nowadays, a new challenging perspective is being given to these materials by the inclusion of non-metallic conductive components. This emerging technology will lead to multifunctional composites with possible applications in structural health monitoring and traffic...

Silk-Ion Jelly: a novel ion conducting polymeric material with high conductivit...

In this work, a thin, flexible and mechanically stable polymer conducting material (Silk-Ion Jelly) was developed though application of Ion Jelly on to silk fabrics. Ion Jelly was prepared through jellification of a room temperature ionic liquid, 1-butyl-3-methyl-imidazolium dicyanamide ([bmim][dca]) using gelatin and water and applied to silk fabrics using two different processes: impregnation and in-situ. Var...

Study of durability of natural fibres for geotecnical applications

Nano-reinforced concrete : an intelligent and high performance construction mat...

Like other important scientific and engineering disciplines, nanotechnology is also being applied widely to civil engineering, especially in construction applications. Concrete, which is the most frequently used construction material, suffers from its inherent brittleness and vulnerability towards degradation and therefore, attempts have been made to improve its performance through reinforcement of nanomaterial...

Development and mechanical characterization of bio-composites for application i...

The present study reports the development of bio-composites for applications in light-weight construction and their mechanical characterization. Bio-composites were developed though impregnation of non-woven fabrics made of natural plant fibres (jute, flax, etc.) with a bioepoxy resin though vacuum infusion technique. The developed composites were characterized for mechanical properties such as tensile, flexura...

Micro-structure and mechanical properties of carbon nanotube/cement nanocomposi...

This work reports the development of carbon nanotube (CNT) reinforced cement nanocomposites with improved micro-structure and mechanical performance. Various types of CNT, such as single-walled and multi-walled (both pristine and acid functionalized) CNTs were dispersed in water with the help of magnetic stirring and ultrasonication using a biocompatible dispersant, Pluronic F-127 and, subsequently mixed with c...

Surface modification of natural fibers for application in composite materials: ...