原文传递
Makeovers for English bridges
| 题名： | Makeovers for English bridges |
| 正文语种： | eng |
| 摘要： | Hanson UK worked with contractor Eric Wright Civil Engineering to create a bespoke concrete mix for the lower arch of the steel bridge and also supplied and laid the asphalt. Steelwork for the bridge was manufactured off-site in two sections, fabricated into shape and welded on land adjacent to the bridge and where the concrete lower arch was installed to allow the whole structure to be lifted into place over the River Eamont. The high early-strength concrete mix included Hanson Regen GGBS (ground granulated blast furnace slag), a cement replacement product which enhances the durability of the concrete while adding to its sustainability credentials. It is a by-product and using it to replace one tonne of Portland cement reduces the embodied CO_2 of the concrete by around 780kg. Its use in large pours also helps minimise the production of heat, reducing the risk of thermal cracking. In total 1,200m~3 of concrete containing Regen have been supplied by Hanson's nearby Penrith concrete plant to create the lower arch, bridge deck, bridge abutment and walls, highway approach retaining walls and several temporary works. |
| 出版年： | 2021 |
| 期刊名称： | World highways |
| 卷： | 30 |
| 期： | 3 |
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