材料效率

Concrete and masonry can offer material efficiency at each stage of development, providing varied opportunities to do more with less. Concrete is often seen as ubiquitous and low cost and so its use may not be considered as carefully as other materials that are scarce or expensive. Consequently, guidance from The Concrete Centre,Material Efficiency,旨在提高对混凝土和砌体建设提供设计人员提供材料有效设计解决方案的潜力的认识。

The summary below is extracted from The Concrete Centre guide.

Resource-efficient manufacture

  • 混凝土包含来自其他行业的再生材料和副产品,减少所需的原始材料量。
  • The concrete industry is a net user of waste. 210 times more waste is consumed during the manufacture of concrete and its constituent materials than the industry sends to landfill.

  • 混凝土采用高效,低垃圾过程制造。

  • Manufacturers offer schemes to reduce waste on-site by offering take-back of surplus products.

Designing for material efficiency in use

  • A range of design solutions in concrete enable designers to improve material efficiency. e.g. post-tensioned concrete or void formers.

  • Exposed soffits and fair-faced concrete reduce the need for internal finishes, whilst optimising the benefits of thermal mass.

  • Over the life of the building, exposing the surface of structural concrete reduces the resources associated with the replacement and maintenance of less robust finishes.

  • The concrete industry has developed generic environmental product declarations (EPDs) for use in building information models (BIM).

Designing for longevity

  • 耐用材料如混凝土和砖石,可以延长建筑物/结构的可养护寿命。设计长寿是最有效的资源投资。

  • 建筑物的寿命长product is unlikely if it is reliant on regular maintenance. The structural integrity of concrete and masonry is, in effect, resilient to lack of maintenance.

  • Considering a building’s performance in future climate change conditions is an essential part of designing for longevity. Concrete and masonry products can be used to provide resilience to overheating, flooding and strong wind, i.e. the extreme weather events predicted to become more frequent.

设计重复使用

  • 混凝土的长期使用寿命和鲁棒性有助于重用现有的混凝土框架,仍然进一步延伸建筑物的生命。

  • Designers can use space planning and strategies for adaptation, to extend the life of a structure by planning for future change of use.

  • 可重新安装和可重复使用的混凝土元件是铺路,梁,围栏等形式的公共场所。

Designing for material recovery

  • 在寿命结束时,混凝土是100%可回收的。

  • 拆卸混凝土可以相对简单地进行隔离和压碎,以重用作为硬核,填充或景观的成本效益,或者在新的混凝土中用作再生骨料。