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Mechanical Properties and Environmental Evaluation of Ultra-High-Performance Concrete with Aeolian Sand
- Source :
- Materials, Materials, Vol 13, Iss 3148, p 3148 (2020), Volume 13, Issue 14
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- Ultra-high-performance concrete (UHPC) has received increasing attention in recent years due to its remarkable ductility, durability, and mechanical properties. However, the manufacture of UHPC can cause serious environmental issues. This work addresses the feasibility of using aeolian sand to produce UHPC, and the mix design, environmental impact, and mechanical characterization of UHPC are investigated. We designed the mix proportions of the UHPC according to the modified Andreasen and Andersen particle packing model. We studied the workability, microstructure, porosity, mechanical performance, and environmental impact of UHPC with three different water/binder ratios. The following findings were noted: (1) the compressive strength, flexural strength, and Young&rsquo<br />s modulus of the designed UHPC samples were in the ranges of 163.9&ndash<br />207.0 MPa, 18.0&ndash<br />32.2 MPa, and 49.3&ndash<br />58.9 GPa, respectively<br />(2) the compressive strength, flexural strength, and Young&rsquo<br />s modulus of the UHPC increased with a decrease in water/binder ratio and an increase in the steel fibre content<br />(3) the compressive strength&ndash<br />Young&rsquo<br />s modulus correlation of the UHPC could be described by an exponential formula<br />(4) the environmental impact of UHPC can be improved by decreasing its water/binder ratio. These findings suggest that it is possible to use aeolian sand to manufacture UHPC, and this study promotes the application of aeolian sand for this purpose.
- Subjects :
- aeolian sand
Materials science
microstructure
0211 other engineering and technologies
Modulus
Young's modulus
02 engineering and technology
mechanical properties
lcsh:Technology
Article
symbols.namesake
Flexural strength
021105 building & construction
General Materials Science
Young’s modulus
Composite material
lcsh:Microscopy
Ductility
Porosity
lcsh:QC120-168.85
ultra-high-performance concrete
lcsh:QH201-278.5
lcsh:T
021001 nanoscience & nanotechnology
Microstructure
Durability
Compressive strength
lcsh:TA1-2040
environmental assessment
symbols
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
lcsh:Engineering (General). Civil engineering (General)
0210 nano-technology
lcsh:TK1-9971
Subjects
Details
- ISSN :
- 19961944
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- Materials
- Accession number :
- edsair.doi.dedup.....e49edfed66ebcf50a80b4f7fae969e0e