The criterion for eco-concrete manufacturing is the development of the product using wastes or sustainable recycled sources, because it may contribute to the reduction of the cost of the raw materials as well as decreasing waste disposal to landfills. However, get along to know more about this concrete.<\/span><\/p>\n Green concrete or eco-concrete is the standard concrete made of eco-friendly materials and has no color difference from standard concrete. Green concrete may be made by adding eco-friendly materials, thus, it is known as environmentally friendly concrete.<\/span><\/p>\n Eco-concrete manufacturing is very cheap because an alternative component is used for its manufacturing instead of cement and aggregate. Using this type of concrete is rapidly increasing in the construction industry and urban development increases the demand for it.<\/span><\/p>\n Cement and aggregate are the main ingredients of concrete and their ongoing extraction results in the reduction of the main resources. This scenario will bring about the issue of construction materials shortage soon. To adjust the shortage, we need to find some alternatives.<\/span><\/p>\n Nowadays, the construction industry looks for an alternative material and there is a solution known as green concrete. The eco-concrete is a new type of concrete in line with sustainable development. It is a revolutionary concept in the construction industry first made in Denmark in 1998.<\/span><\/p>\n Green concrete or eco-concrete is the standard concrete made of eco-friendly materials. Now, green concrete is used to reduce the demand for common construction materials and to decrease carbon dioxide emission to the environment.<\/span><\/p>\n The materials frequently used in eco-concrete including blast furnace slag, fly ash, silica fume, recycled glass, and wood ash are employed as a substitution for cement in green concrete production.<\/span><\/p>\n The eco-concrete\u2019s instances of use are as follows:<\/span><\/p>\n Today, the word \u2018green\u2019 not only indicates green color but also is a symbol of saving in the environment surrounding us. We use green concrete for the reasons below:<\/span><\/p>\n To produce standard concrete, we use materials that production process includes the emission of a large amount of CO2<\/sub> into the environment. While green concrete employs eco-friendly materials and emits a little CO2<\/sub> into the environment.<\/span><\/p>\n As mentioned above, the construction industry grows rapidly in recent years and concrete use considerably increases as well. Moreover, due to the limited sources for extraction, we encounter a shortage of common construction materials such as cement and aggregates. Therefore, to reduce the demand for common construction materials, green concrete is a better choice.<\/span><\/p>\n Construction of any structure requires a lot of materials and produces a large amount of construction waste as well. These wastes are never used for other works. Thus, green concrete facilitates the idea of recycling and reusing these wastes to produce concrete.<\/span><\/p>\n The following materials are used in eco-concrete:<\/span><\/p>\n The followings are the materials that may be used as an alternative to cement in concrete:<\/span><\/p>\n Ground granulated blast furnace slag (GGBS) is the waste material of steel and iron manufacturing. Zero to 80% substitution of GGBS in various concrete grades, gives higher compressive and bending strengths. Moreover, the substitution of about 40% GGBS in concrete provides 9% higher strength in 7 days and gives a 6% strength increase with ??% substitution in 28 days.<\/span><\/p>\n Fly ash results from burning powdered coal. In other words, it is the waste of a coal-based power plant. Weight-based replacement of cement by fly ash enables the production of concrete with high compressive and fracture strengths. As shown in the results, fly ash may be used in concrete up to 30% instead of cement.<\/span><\/p>\n Silica fume is one of the by-products of producing process of silicon and ferrosilicon which is composed of round particles of 150 nm average diameter. The results indicated that this compound causes the enhancement of concrete\u2019s strength and durability. Using silica fume reduces the harmful environmental impacts and results in a 30% reduction in cement use.<\/span><\/p>\n Concrete blocks, self-compact concrete, and architectural mortar are manufactured using recycled glasses.<\/span><\/p>\n The concrete specimens are used with the mortar based on palm leaf ash replaced 10%, 20% and 30% of cement.<\/span><\/p>\n The followings are the materials that may be used as an alternative for aggregates in the concrete:<\/span><\/p>\n Silica sand is a high-quality, clean and uniform material used in casting processes. The gravel and sand are employed to make casts or patterns used for iron casting (iron and steel) and non-iron casting (copper, aluminum, brass).<\/span><\/p>\n Casting sand and gravel are used as a substitution for fine aggregates with various weight percent to prevent water absorption and chloride rapid penetration. The concrete made by casting sand and gravel will show better durability by 30%.<\/span><\/p>\n Plastic wastes cause a 16% increase in concrete\u2019s strength and rubber materials results in a 50% increase of concrete\u2019s strength.<\/span><\/p>\n To produce better performance concrete, one may use farming wastes deriving from bamboo, corn, wheat, olive and, sea shell. However, these wastes should be produced by appropriate filtration methods.<\/span><\/p>\n The positive sides of using eco-concrete are:<\/span><\/p>\n The negative sides of using eco-concrete are as follows:<\/span><\/p>\nGreen concrete definition<\/h2>\n
Green concrete application<\/h2>\n
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![\"Applications](\"https:\/\/betonparszagros.ir\/wp-content\/uploads\/2021\/06\/uses-of-green-concrete-betonparszagros.ir_.jpg\")
<\/h2>\nImportance of using green concrete<\/h2>\n
1. Reduction of CO2<\/sub> emission<\/h3>\n
2. Reduction of the demand for common materials<\/h3>\n
3. Recycling and reuse of materials<\/h3>\n
Types of materials used in green concrete<\/h2>\n
The materials substituted for cement<\/h3>\n
1. Ground granulated blast furnace slag<\/h3>\n
2. Fly ash<\/h3>\n
3. Silica fume<\/h3>\n
4. Recycled glass<\/h3>\n
5. Palm leaf ash<\/h3>\n
![\"Applications](\"https:\/\/betonparszagros.ir\/wp-content\/uploads\/2022\/10\/green-concrete-Parszagros.ir_.jpg\")
<\/h2>\nThe materials substituted for aggregates<\/h2>\n
1. Casting sand and gravel<\/h3>\n
2. Plastic and rubber wastes<\/h3>\n
3. Farming wastes<\/h3>\n
Advantages and disadvantages<\/h2>\n
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