零排放资源库:建筑材料符合2050年在英国实现零排放的现实愿景
Charlotte Taylor1, Julian M Allwood2, Takuma Watari3
1Department of Architecture and Civil Engineering, University of Bath, Bath, UK.
概括
满足建筑需求需要一个零排放的资源库. 这次审查批判性地评估了英国的建筑材料,强调了可持续未来的土地,地质,废料和电力方面的局限性.
科学领域:
- 建设管理建设管理.
- 可持续材料 可持续材料
- 循环经济是一个循环经济.
背景情况:
- 建筑行业在满足"零排放资源池"需求方面面临重大挑战.
- 目前的脱碳战略往往依赖于未经证实的技术,如碳储存,或忽视零排放电力供应的限制.
- 对材料可用性的现实评估对于可持续的建筑经济至关重要.
研究的目的:
- 在零排放框架内,批判性地审查英国供应建筑材料的选择.
- 评估资源的现实可用性,考虑到碳储存,零排放电力和运输方面的限制.
- 确定关键建筑材料的局限性和机遇.
主要方法:
- 文献审查和对现有的脱碳路线图和场景分析进行批判性分析.
- 专注于九种主要建筑材料:混凝土,钢铁,,结构玻璃,木材,土壤,石头,石灰和草.
- 对材料供应链与零排放资源和技术的可用性进行评估.
主要成果:
- 处女生物基材料受到生产性土地供应的限制.
- 处女土和石头受到当地地质和运输物流的限制.
- 回收材料取决于废料的可用性和无排放的电力.
- 重复使用的组件受到可用性和翻新潜力的限制.
- 目前的战略可能过度依赖高风险技术或低估资源限制.
结论:
- 建筑的零排放资源池由原始生物基材料,土壤,石材,回收材料和重复使用的组件组成,每个都有不同的限制.
- 需要对国家建设战略进行修订,使其与现实的资源可用性保持一致.
- 在减少材料预算和循环经济框架内提供建筑服务方面存在重大创业机会.
更多相关视频
相关概念视频
Design Example: Sustainability in Concrete Building
390
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
390
Manufacture of Concrete Masonry Units
381
The process of manufacturing concrete masonry units begins by mixing stiff concrete composed of Portland cement, aggregates, and water. This mixture is then poured into metal molds. To ensure the concrete settles uniformly and to avoid separation of its components, the mixture in the molds is subjected to vibration. Shortly after, the still-wet blocks are removed from the molds and placed on racks.
These wet blocks are then transported for curing, which can occur in one of two environments: a...
These wet blocks are then transported for curing, which can occur in one of two environments: a...
381
Preplaced Aggregate Concrete
374
Preplaced aggregate concrete is ideal for construction environments that are not easily accessible. The process begins by properly wetting the gap-graded coarse aggregates to remove the dirt, then placing it in the form and compacting it. Voids are filled with a mortar mix pumped under pressure through slotted pipes. This mortar typically consists of Portland cement, pozzolan, fine aggregates, water, and a fluidizing aid. The pozzolan helps reduce bleeding and segregation while improving the...
374
Portland Cement
622
Portland cement is the essential binding ingredient in concrete, made from finely ground materials including lime, iron, silica, and alumina. Lime is derived primarily from limestone, marble, marl, seashells, and clays, which also supply iron and alumina, while silica is sourced from sand, chalk, and bauxite. Contemporary manufacturing of Portland cement is a significant source of carbon dioxide emissions, prompting research into reducing its content in concrete through alternative...
622
Ready Mixed Concrete
343
Ready-mixed concrete, also known as pre-mixed concrete, is prepared in a centralized plant and then transported in trucks to construction sites where it is ready for placement. This type of concrete is categorized into central-mixed, truck-mixed (or transit-mixed), and shrink-mixed. Central-mixed concrete is entirely prepared at a plant and moved to the site in agitator trucks that rotate at a speed of 2 to 6 rpm. Truck-mixed concrete, on the other hand, has the ingredients batched at the plant...
343
Concrete
744
Concrete is a vital construction material extensively used worldwide, primarily valued for its strength, durability, and versatility, which it provides for various structural designs. Concrete generally comprises ingredients like Portland cement, coarse gravel, fine sand, and water. Concrete can be mixed by simple hand methods or industrially at computer-controlled plants. The mixture consists of aggregates and a paste made from water and Portland cement. This paste coats the aggregates and,...
744


