A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Novel Ultra-High-Performance Glass Concrete
A typical UHPC is composed of cement, quartz powder (QP), silica fume (SF), quartz sand (QS), and steel fibers.1 UHPC achieves compressive strengths of at least 150 MPa (22,000 psi), flexural strengths up to 15 MPa (2200 psi), elastic moduli of up to 45 GPa (6500 ksi), and minimal long-term creep or shrinkage.2 It can also resist freezing-and-thawing cycles and scaling conditions without visible damage, and it is nearly impermeable to chloride ions.3 UHPC is thus a promising material for special prestressed and precast concrete elements (decks and abutments for lightweight bridges and marine platforms; urban furniture; and precast walls), concrete repair, and architectural façade elements.4 Although UHPC is relatively expensive to produce, it presents some economic advantages because its enhanced properties allow: * Reduction or elimination of passive reinforcement in structural elements; * Reductions in the thickness and self-weight of concrete elements; and * Increases in service life accompanied with reductions in maintenance costs.5 UHPC is designed with a very high cement content ranging between 800 and 1000 kg/m3 (1350 and 1690 lb/yd3), which leads to high production costs, consumes natural sources, and increases CO2 emissions. Design The footbridges were designed to meet the university's architectural and stmctural requirements for pedestrian use as well as to be in compliance with the university's regulation on sustainable development. Because the mechanical properties of the UHPGC allowed the spans to be constmcted with relatively small cross sections, each bridge had a total weight of around 4000 kg (8800 lb).
Novel Ultra-High-Performance Glass Concrete
A typical UHPC is composed of cement, quartz powder (QP), silica fume (SF), quartz sand (QS), and steel fibers.1 UHPC achieves compressive strengths of at least 150 MPa (22,000 psi), flexural strengths up to 15 MPa (2200 psi), elastic moduli of up to 45 GPa (6500 ksi), and minimal long-term creep or shrinkage.2 It can also resist freezing-and-thawing cycles and scaling conditions without visible damage, and it is nearly impermeable to chloride ions.3 UHPC is thus a promising material for special prestressed and precast concrete elements (decks and abutments for lightweight bridges and marine platforms; urban furniture; and precast walls), concrete repair, and architectural façade elements.4 Although UHPC is relatively expensive to produce, it presents some economic advantages because its enhanced properties allow: * Reduction or elimination of passive reinforcement in structural elements; * Reductions in the thickness and self-weight of concrete elements; and * Increases in service life accompanied with reductions in maintenance costs.5 UHPC is designed with a very high cement content ranging between 800 and 1000 kg/m3 (1350 and 1690 lb/yd3), which leads to high production costs, consumes natural sources, and increases CO2 emissions. Design The footbridges were designed to meet the university's architectural and stmctural requirements for pedestrian use as well as to be in compliance with the university's regulation on sustainable development. Because the mechanical properties of the UHPGC allowed the spans to be constmcted with relatively small cross sections, each bridge had a total weight of around 4000 kg (8800 lb).
Novel Ultra-High-Performance Glass Concrete
2015
Article (Journal)
English
Laboratory Characterization and Field Application of Novel Ultra-High-Performance Glass Concrete
| Online Contents | 2016