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Mix proportion of the green lightweight concrete (kg ..

This construction system comprises two insulating cladding walls made of high density expanded polystyrene, joined by two metal spacers that are reinforced in their lateral parts by flat metal bands. Then concrete is poured inside the cladding up to a height of 3.6 metres in one go. This wall system is totally seismic-protected and has a variable width of 0.25 m to 0.45 m, with excellent acoustic and thermal insulation properties.

Aside its exceptional thermal insulation properties, it offers excellent acoustic insulation and a fire-retardant effect from 90 to 120 minutes, depending on the thickness of the wall. It naturally insulates the outside from the inside, eliminating all thermal bridges and offering full protection to the construction. This type of construction method can be used for high buildings (up to 10 storeys) and underground basements.

With its reinforced insulation concept for all exterior walls and the slow inertia of its walls, Euromac2 (walls, floors, roofs) is particularly effective for BBC (low energy) buildings (Effinergie, Minergie and passive house certificates) and suitable for green building projects.

green concrete by marble powder thesis_Ore Processing “Green Concrete: ..

Cellular concrete, sometimes referred to as aerated concrete, is a lightweight concrete that is very interesting for green building. It is a combination of water, siliceous sand, cement, lime and air. The lime reacts in contact with the aluminium powder present to 0.05%, emitting hydrogen gas to create the air bubbles. After hardening, the material is fairly light with a density of 400 Kg/m3 as it contains thousands of trapped air bubbles (up to 80% of its volume), and offers excellent thermal characteristics. Also, the expansion agent produced by recycling after chemical bonding with the lime, forms non-toxic calcium aluminates.

The materials used in its manufacture make it an eco-material as it respects the environment. It is 100% recyclable and can be used to cover rubble without risk of polluting soils. Cellular concrete offers a high thermal inertia and enables efficient correction of thermal bridges. It also offers exceptional resistance to fire, in excess of 6 hours. Soundproofing taken into account in the HEQ approach is 49 dB.

The sound-damping performance of these blocks satisfies the most stringent requirements of acoustic regulations in effect for exterior walls. Cellular concrete is a natural mineral, non-combustible material. It offers remarkable protection against fire and its frequent use in industry and buildings requiring such protection is highly appreciated. A wall built of cellular concrete is water tight and can breathe. It is a real humidity regulator: It softens dry air by releasing gas and absorbs excessive humidity in a damp atmosphere. It therefore creates a healthy, pleasant atmosphere throughout the home.

A major benefit of cellular concrete and what sets it apart from other materials is how it controls interior temperatures through thermal inertia. The thermal inertia of this material guarantees high attenuation of external temperature variations. It has an excellent capacity to accumulate heat and return it. This can help reduce the amount of time heating is used in half-season and can even offer natural temperature control in summer.

Research papers on green concrete pdf

Last, a cost analysis showed that sustainable/green concrete in the UAE can be produced at the same price of the regular concrete.

Wood occupies a primordial place in the green building approach. There are many different possibilities in terms of wooden structure. We can opt for walls with solid wood beams, wall with glued and laminated timber, and the wooden frame structure, which are suitable for an urban environment as from the outside they look identical to a conventional construction. The foundations of these constructions are made of concrete.

The benefits reside in the fact that wood is a clean material that generates neither radon nor static electricity. Wood protects itself naturally as it contains polyphenols of vegetal origin, which have a disinfectant effect. It is also an excellent thermal and hygrometric regulator, regulating ambient humidity like other green building construction materials.

One of its many benefits is its lightness. Wood also resists well to traction and compression along the axis of the tree from which it came. It offers high insulation properties, which enables the construction of thinner bearing walls. Wood offers good insulation both in winter and summer by naturally contributing to the thermal inertia necessary to keep warmth inside during the winter and maintain coolness in summer. It can significantly reduce heating consumption in winter.

Reactive power causes more energy to be consumed and in the end contributes to increasing CO2 emissions into the atmosphere and to more costly electricity bills. Under the yellow rate, reactive power is taken into account on an all-inclusive basis in the apparent subscribed rating, which increases the cost of electricity. The aim of compensation is to improve the power factor of an installation. It consists of setting up capacitor banks which are a source of reactive energy. So the power capacitor banks reduce the quantity of reactive energy supplied by the source. It is an eco-efficient solution that can make an immediate contribution to reaching the objectives set by the Grenelle Environment round table.

The conservation of natural resources and enhanced energy efficiency are the fundamental objectives of sustainable development and green building policies. Reactive power compensation can increase the energy efficiency of an installation. It is then possible to achieve a situation where only the active (useful) energy is carried, both on transport and distribution networks, and in customer networks. The use of reactive energy compensation equipment is a major source of savings. Such equipment enables an immediate and significant reduction in energy consumption and CO2 emissions.

The capacitor banks provide the reactive energy necessary for certain equipment to work (ballast, motors, etc.). They enable consumers to subscribe to a less expensive power supply contract with the utility supplier. Low Voltage and High Voltage capacitor banks are designed and sold by the Legrand group in France and around the world. They make a significant contribution to sustainable development.

These capacitors compensate the installation’s reactive energy while reducing energy bills. In effect, they reduce the apparent power required by the installation by around 20%. This can avoid the replacement of a substation that has reached its power capacity or to settle for a subscription that is limited by technical conditions (many subscribers on a single transformer). Capacitors are used in industrial buildings and large commercial buildings. With the same subscription, they can eliminate the reactive energy bill, optimise the subscription and increase the installation yield. In a 1000 m² supermarket, savings can reach €1128 per year. The savings in CO2 amount to 1.6 tonnes a year and the cost is amortised in just 2 years.

Concrete green Research pdf on ..

For example, he shows sections along with call-outs for building materials, such as concrete, in the Coliseum and Pantheon.

Buildings have a relatively long lifetime compared to consumer goods. The selection of green construction methods and materials therefore has an impact over a very long period of time. The choice of construction materials is important insofar that materials with very high thermal inertia must be selected, as they insulate efficiently against the cold in winter an heat in summer. Their environmental performance is also a determinant factor.

An environmental approach to construction always results in savings in terms of maintenance and operating costs. This approach does not forcibly entail additional initial investment. One of the following structural materials must be used to build a green building:

• Cellular concrete: Load-bearing material offering thermal insulation, of mineral origin. It is durable, recyclable and produces no toxic discharges.
• Clay bricks (honeycomb brick): Load-bearing clay material offering thermal insulation. Offers high acoustic performance and highly durable. Incurs overconsumption of grey energy in the manufacturing process.
• Wooden frame: Load-bearing material (requires systematic addition of an insulating material) and CO2 absorbent. A renewable source available in large quantities.

Staircases are essential elements in a construction and must satisfy very specific standards in terms of safety. In buildings, staircases that present a certain risk are usually built with heavy materials (in general concrete). The joins between the steps and the stringer, the core or the wall, as well as those between the stringer and the planks, should systematically be acoustically treated, which will considerably limit the propagation of noise in a wooden staircase.

As an eco-material, local wood should be tested for its durability properties. A hard wood such as oak will resist for at least 80 to 100 years, but thin steps made of tender wood are to be avoided. For green buildings, wood is naturally recommended.

In this thesis, the possibilities of making sustainable/green concrete from locally available materials were investigated.
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Driveway Sealer Tips & Products - The Concrete Network

A: 1. Paint the roof white to reflect the sun. 2. While you are digging down 7 ft, go deeper and lay a steel culvert 12 inches in diameter about 50 ft long and bring in air cooled by the earth using a blower or electric fan. That is, if the ground temperature is cool enough year round down deep…about 10 ft down. Is it? If so you can use the deep earth temp to cool the incoming air. The cooling tube needs to be down in the earth where the earth temperature in summer is a lot cooler than the outside air. You have to measure at different depths to learn how deep that is 3. Make sure the concrete is strong, insulated to the earth and has proper reinforcing steel bars. Safety first!

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