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In South Africa, buildings account for 23 per cent of electricity used, and a further 5 per cent in the manufacturing of construction products CIDB The construction industry has traditionally been a slow adopter of new technologies in general, mainly due to the perceived associated risks Woudhuysen and Abley, The building sector in particular is reluctant to adopt new technologies due to potential buyer resistance Woudhuysen and Abley, Thus, the sector undertakes most of its work with conventional technologies. The introduction of these systems has heightened interest in green building, and in the technologies they use.

While much of the technology remains conventional to meet some of the performance requirements, green technology is required. Because buildings are often used for centuries, the rapid pace of development increasingly means that it is impossible to imagine the demands that future uses will place on buildings. Consequently, products and systems should be chosen that make adaptation easier. While aesthetic appeal will always be a component of building design, the real challenge is to create built environments that are durable and flexible, appropriate in their surroundings and provide high performance with less detrimental impacts.

What are green materials and technologies?

However, these improvements are offered through the use of existing materials and products, design approaches, and construction methods. Because of this conventional approach to design and construction, it remains difficult to incorporate truly innovative technologies into current construction practice.

Good design is fundamental to sustainable construction. Decisions made at the initial design stage have the greatest effect on the overall sustainability impact of projects. The issues to be faced by radical.

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Prudent use of natural resources results in both greater industry efficiency and a restricted usage of natural materials. Practices such as materials recycling, waste minimisation, local product resourcing, land decontamination, and construction- and demolition-waste disposal make sound business sense and encourage good construction housekeeping. The characteristics of high-performance green building as suggested by Fujita Research include:.

Integrated processes, innovative design and increased efficiencies to save energy and resources;. Employing lean construction methodologies and tools to improve waste management and reduce the environmental impact of construction waste;. Materials and systems: new function integrated building components, durability, repairability, and retrofit- ability of components. In High Performance construction, the key issue is how the choice of construction products and methods can create scope for reducing burdens. The market for building materials is predicted to grow steadily into the foreseeable future.

The primary driver for growth by sheer volume is the ongoing government investment in new buildings and other physical infrastructure in developing countries such as South Africa. However, as implied by the comprehensive list of effect categories Table 1 typically investigated in a Life Cycle Assessment LCA study, all the extractions from and releases to nature are embodied effects, and there are also embodied effects associated with the making and moving of energy itself known as pre-combustion energy.

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Until the s, the construction industry sector made little attempt to establish objective and comprehensive methods for environmental assessment and improvement of buildings. Starting with the launch of the Building Research Establishment Environmental Assessment Method BREEAM in , a large number of building rating systems have been developed around the world to provide the basis for putting sustainable construction into practice.

However, rating tools are not underpinned by robust science.

The environmental improvements suggested are not benchmarked against empirical data Reijnders and van Roekel, There is a lack of credits dealing directly with the environmental problems embodied effects of concern to society Zimmerman and Kibert, These deficiencies are most notable in the case of materials selection which is generally informed by prescriptive easy-to-follow directions, for example, use materials with recycled content Blom, ; Trusty, Green technologies in the building sector can be defined as those technologies which reduce the environmental impact of building on the environment.

The construction industry sector is the largest documented user of materials by weight. Book your seat here. Join the discussion here. By Llewellyn van Wyk Introduction The potential impact of climate change and global warming is without doubt one of the most life-threatening challenges that face humanity. High Performance Green Building Because buildings are often used for centuries, the rapid pace of development increasingly means that it is impossible to imagine the demands that future uses will place on buildings. Website Feedback

The characteristics of high-performance green building as suggested by Fujita Research include: 1. Optimal environmental and economic performance; 2. Individual criteria included in the rating system can be weighted to accommodate project-specific goals and objectives. JavaScript is required for this site to operate correctly. Please enable Javascript in your web browser and then refresh this page. CalRecycle maintains archived information on its website as a record of its activities for use by the public and CalRecycle staff.

Introduction What is a green building product or material? Energy conservation. Improved occupant health and productivity. Lower costs associated with changing space configurations. Greater design flexibility. What is a green building product or material? Natural, plentiful or renewable : Materials harvested from sustainably managed sources and preferably have an independent certification e.

Resource efficient manufacturing process : Products manufactured with resource-efficient processes including reducing energy consumption, minimizing waste recycled, recyclable and or source reduced product packaging , and reducing greenhouse gases. Locally available : Building materials, components, and systems found locally or regionally saving energy and resources in transportation to the project site.

2. Green architecture with cross-ventilation

Salvaged, refurbished, or remanufactured : Includes saving a material from disposal and renovating, repairing, restoring, or generally improving the appearance, performance, quality, functionality, or value of a product. Reusable or recyclable : Select materials that can be easily dismantled and reused or recycled at the end of their useful life.

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  • Recycled or recyclable product packaging : Products enclosed in recycled content or recyclable packaging. Durable : Materials that are longer lasting or are comparable to conventional products with long life expectancies. Indoor Air Quality IAQ is enhanced by utilizing materials that meet the following criteria: Low or non-toxic : Materials that emit few or no carcinogens, reproductive toxicants, or irritants as demonstrated by the manufacturer through appropriate testing. Products that also maximize resource and energy efficiency while reducing chemical emissions.

    Moisture resistant : Products and systems that resist moisture or inhibit the growth of biological contaminants in buildings.

    11 Green Building materials way better than Concrete

    Healthfully maintained : Materials, components, and systems that require only simple, non-toxic, or low-VOC methods of cleaning. Systems or equipment: Products that promote healthy IAQ by identifying indoor air pollutants or enhancing the air quality. Energy Efficiency can be maximized by utilizing materials and systems that meet the following criteria: Materials, components, and systems that help reduce energy consumption in buildings and facilities.

    What are Green Materials and Technologies? – Alive2green

    See Green Building Basics for more information. Water Conservation can be obtained by utilizing materials and systems that meet the following criteria: Products and systems that help reduce water consumption in buildings and conserve water in landscaped areas. Three basic steps of product selection Product selection can begin after the establishment of project-specific environmental goals. Froeschle, Research Evaluation Selection 1. References Lynn M. Back D. Roodman and N.