Abstract
The use of expanded clay aggregate (ECA) for developing lightweight concrete results in strength-reduction properties. However, the ECA-based concrete strength properties can be improved by adding steel fibre (SF), glass fibre mesh (GFM) and multi-walled nano-carbon tubes (MWCNT). The combined effect of MWCNT, GFM, SF and ECA-based concrete and its strength properties is still unexplored. It is worth drawing a logical conclusion concerning the impact on the strength of concrete by incorporating the materials mentioned above. Two-stage expanded clay aggregate fibrous concrete (TECAFC) is a new concrete type and an emerging research area in material engineering. The casting method of TECAFC includes the two essential phases as follows. First, ECA and fibres are filled into the empty cylindrical mould to develop a natural skeleton. Second, the grout comprising cement, sand and MWCNT, are injected into the developed skeleton to fill voids. In this research, eight mixtures were prepared with 0.1 and 0.2% of MWCNT, 2.5% dosage of SF and three different layers of GFM inserted between the two layers of concrete. These eight mixtures were divided into two series of three mixtures each, in addition to two reference mixtures that include no SF or GFM. The first series of mixtures was comprised of 0.1% of MWCNT and 2.5% of SF and one, two and three layers of GFM insertion. The second series was the same as the first series and the dosage of MWCNT was taken as 0.2%. All cylindrical specimens were tested under drop mass impact as per the suggestions made by the ACI Committee 544. The test results showed that incorporating steel fibres and GFM improved the cracking and failure impact resistance by more than 270 and 1100%, respectively, and increased the impact ductility index by more than 220%, significantly contributing to steel fibres.
Highlights
Due to the paucity of available energy supplies, many studies are currently underway to utilise energy-efficient and energy conservation materials
This study aims to examine the impact behaviour of fibrous Two-stage expanded clay aggregate fibrous concrete (TECAFC)
The combined effect of 100% expanded clay aggregate (ECA), glass fibre mesh (GFM) of a 150-diameter insertion, 2.5% of steel fibre (SF), 0.1 and 0.2% of multi-walled nano-carbon tubes (MWCNT) on concrete were examined against impact loading
Summary
Due to the paucity of available energy supplies, many studies are currently underway to utilise energy-efficient and energy conservation materials. In today’s globalised world, the construction industry is a fast-growing industry due to the enormous demands of current infrastructure. In this situation, ecological balance and energy-efficient buildings make it possible to increase efficiency through enhancing thermal properties and using lightweight building materials. Ecological balance and energy-efficient buildings make it possible to increase efficiency through enhancing thermal properties and using lightweight building materials In such a situation, lightweight concrete in the building sector became common with two main benefits: fewer transportation costs and lessened weight of the structure. ECA production consists of special plastic clay with and without the addition of lime content. Dried clay is heated and burned at high temperatures of 1100–1300 ◦ C [1]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
