Empty and crumbling structures are not just a nuisance, but a drain on the economy and a waste of productive land. Increasing construction requires more and more cement and steel factories, which are increasingly discharging pollution and carbon dioxide. As Chinese landscape designer Yu Kongjian has pointed out, it also suffocates ecosystems (fertile soil, self-cleaning streams, storm-resistant mangroves, flood-preventing forests) that humans ultimately depend on. It's a threat to what he calls “ecosecurity.”.
Concrete production increases air pollution while transporting raw materials to production sites and concrete to construction sites adds to gases. Green concrete is a form of environmentally friendly concrete that is made from waste or waste materials from different industries and requires less energy for its production. Compared to traditional concrete, it produces less carbon dioxide and is considered cheap and more durable. The cement industry is one of the main producers of carbon dioxide, a powerful greenhouse gas.
Concrete causes damage to the most fertile layer of the earth, the top layer of soil. Concrete is used to create hard surfaces that contribute to surface runoff that can lead to soil erosion, water pollution and flooding. On the contrary, concrete is one of the most powerful tools for proper flood control, through dam construction, diversion and diversion of floodwaters, mud flows, and the like. Light-colored concrete can reduce the urban heat island effect, due to its higher albedo.
However, the original vegetation results in an even greater benefit. Concrete dust released by building demolition and natural disasters can be a major source of hazardous air pollution. The presence of some substances in concrete, including useful and unwanted additives, can cause health problems due to toxicity and radioactivity (usually of natural origin). Wet concrete is highly alkaline and should always be handled with appropriate protective equipment.
Concrete recycling is increasing in response to improved environmental awareness, legislation and economic considerations. In contrast, the use of concrete mitigates the use of alternative building materials such as wood, which is a natural form of carbon sequestration. In its raw state, concrete powder is environmentally friendly, since it is a natural component. But it is in the industrial extraction of materials, mixing and, of course, the application of concrete that it ceases to be environmentally friendly.
The disadvantage of this essential binder is that it is not really environmentally friendly due to the manufacturing process. Manufacturing is one of the most polluting on the planet, and manufacturers would like to find a solution to protect the planet. Of course, the idea is noble, but not as easy as it seems. And not because of the indication of “green concrete” on the bags, will this product be carbon-free?.
Green building is the concept of building houses and buildings that we need today without depleting resources for future generations. In the new world of sustainable construction, information is emerging about the strength, durability and indestructible nature of concrete as an ingenious building material. In the midst of the dismantle and replace mentality that still prevails in today's world, concrete stands out defiantly. Try to replace concrete with an alternative building material, and it will be difficult to find a substitute that possesses the same thermal qualities, design flexibility and permanence.
Fortunately, there is a paradigm shift in attitudes about resource conservation and sustainability. More builders and homeowners are now embracing green building, and concrete is emerging as a champion rather than a rebel. Read on to find out why and how you can use concrete to build environmentally responsible homes without compromising beauty, comfort, or economy. Are you ready to start your project? Find a Contractor or Buy Concrete Products This parking lot installed in 2001 in Bannister Park, Fair Oaks, California.
The Sacramento Cool Communities program was a partner in the project, which used permeable concrete for stormwater management and to reduce the urban heat island effect. In about 10 years, the trees will shade more than half the lot. The predominant raw material for cement in concrete is limestone, the most abundant mineral on earth. Concrete can also be made from fly ash, slag cement and silica fume, all waste by-products from power plants, steel mills and other manufacturing facilities.
Concrete builds durable, durable structures that won't rust, rot or burn. The service life of concrete construction products can be twice or triple that of other common building materials. Homes built with concrete walls, foundations and floors are highly energy efficient because they take advantage of the inherent capacity of the thermal mass of concrete to absorb and retain heat. This means homeowners can significantly reduce their heating and cooling bills and install smaller capacity heating and air conditioning equipment.
Concrete minimizes the effects of urban heat islands. Light-colored concrete floors and roofs absorb less heat and reflect more solar radiation than dark-colored materials, such as asphalt, reducing the demand for air conditioning in summer. Paved surfaces tend to be waterproof and can block the natural infiltration of water into the soil. This creates an imbalance in the natural ecosystem and leads to problems such as erosion, flash floods, depletion of the water table and pollution.
Permeable concrete is a special type of structural concrete with a network of sponge-shaped voids through which water passes easily. When used for driveways, sidewalks, parking lots, and other pavements, permeable concrete can help retain stormwater runoff and replenish local water supplies. Concrete can be produced in the quantities needed for each project, which reduces waste. Once a concrete structure has served its original purpose, concrete can be crushed and recycled into aggregate for use on new concrete pavements or as a road fill or base.
For most builders and homeowners, expressions such as sustainable development, green building and eco-design were not part of the vernacular several years ago (although commercial builders have long been familiar with these terms). But with growing concerns about rising energy costs and the continued depletion of finite resources, these environmental buzzwords are becoming widespread. In the last 10 years, green building has grown in popularity in the residential sector, according to Ray Tonjes, chairman of the Subcommittee on Green Buildings of the National Association of Home Builders. He says more homebuyers are making environmental issues a top priority for new construction and remodeling.
Reduce utility costs. Through strategies such as proper site orientation, use of insulating building materials, and tighter construction to reduce drafts, sustainable homes require much less energy to heat and cool. Sometimes off-grid energy sources, such as solar energy, can be used to meet all or part of the household's electricity needs. Reduced impact on the surrounding environment and community.
Sustainable homes use more materials manufactured or harvested in an environmentally responsible way. They also use locally available materials, not only to reduce transport impacts (such as fuel consumption and pollution) but also to stimulate the local economy. It is also important to pay attention to landscaping, with consideration of minimizing stormwater runoff, which can pollute local waterways. A healthier and more comfortable living environment.
By using non-toxic materials, sustainable homes have better indoor air quality. They also use moisture and rot resistant materials to eliminate concerns about the growth of dangerous mold and mildew. Exterior walls tend to have a higher thermal mass, which offers the dual advantage of reducing temperature fluctuations and dampening outside noise. Building with highly durable, low-maintenance materials such as concrete extends the lifecycle of a sustainable home and reduces maintenance and replacement costs.
Fair Oaks, CA. The lush tree canopy also shades the parking lot to provide natural cooling. Tree roots need air and water. Permeable concrete allows the passage of both.
This previous parking lot in Miller Park in the operation of a typical house or building over time consumes much more energy than it consumes to build it, according to Vera Novak, an environmental specialist and one of the industry leaders at ConcreteNetworks. While researching the lifecycle of buildings, he found that only 2% of total energy is spent on materials and construction, and a staggering 98% is used to heat, cool and power the building. Studies have shown that urban environments have higher temperatures in areas where there are few trees and many buildings and paved surfaces. This additional heat (called the urban heat island effect) makes air conditioning systems work harder and consume up to 18% more energy.
Up to 95% of hydrocarbons in urban runoff come from the binder and sealant used in asphalt pavements. Clean environments, free of dust, mold and other contaminants can be achieved with interior concrete floors. Photo courtesy of the Institute of Decorative Concrete. The Healthy House Institute reports that indoor air pollution is the cause of approximately 50% of diseases.
Common sources of this pollution include degassing toxic paints and finishes, carpets, manufactured wood products containing high formaldehyde glues, dust mites, mold spores, mold and some cleaning products. When it comes to poor indoor air quality, carpets are one of the worst offenders. New synthetic carpets can degas more than 100 different VOC. And whether it is made of synthetic or natural materials, the carpet is difficult to clean and becomes a haven for dust particles, pollutants and bacterial growth.
Tens of millions of microorganisms can be found in a square foot of carpets. Carpet can also be a major source of mold, especially if it gets wet and water is not completely removed. Concrete floors, stained with non-toxic pigments, are a healthier alternative to carpets because they do not emit harmful VOCs and are easy to clean. In fact, VOC emissions from concrete construction products are much lower than those of most other building materials, according to the PCA.
The use of cement and natural lime plaster wall finishes and concrete countertops can also significantly reduce total VOC concentrations within a home. Exposure to toxic mold in homes and buildings has been blamed for ailments ranging from headaches to severe respiratory infections and immune system disorders. Mold can thrive on any organic material, especially in warm, humid and humid conditions. In addition to carpets, mold can feed on drywall and wood studs, beams and wall coverings.
Concrete floors and walls will not support the growth of toxic mold. The house also sits on screw piles, instead of the traditional concrete base, which means better insulation and ventilation, while at the same time it has less impact on the terrain on which it is located. If you need concrete for a floor slab, driveway, yard, or other purposes, talk to your builder or concrete supplier and let them know that you want to build a green home. The use of concrete waste is a smart way to use waste concrete material and reduce the resource consumption of the concrete production process.
Both concrete and asphalt are the main contributors to what is known as the urban heat island effect. Concrete has been submerged from natural resources in man-made processes; evidence of concrete use dates back more than 8,000 years. In France, the team at the design office of Elioth, a subsidiary of the Egis group, intrigued by the promises made by manufacturers to reduce CO2 emissions, took over the life cycle analysis calculations for next-generation concrete. Hoffmann Green Cement Technologies (HGCT) is a pioneer in its field, as it is the first in the world to offer carbon-free concrete.
In the time it takes you to read this sentence, the global construction industry will have poured more than 19,000 concrete tubs. The Universiti Teknologi MARA in Malaysia addressed the problem of environmentally friendly concrete in a unique and environmentally friendly way. The lower hygrometric shrinkage of BYF concrete (greater dimensional stability) without the use of additives has led to a reduction in air losses. Today's concrete is created through a process that was designed in the early 19th century by Joseph Aspdin, a mason from Leeds.
Most commonly, these concretes use sulfur to act as a non-reactive binder, allowing the construction of concrete structures in environments without water or with very little water. . .