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Journal ArticleDOI

Green concrete for sustainable construction

AbstractThere are many choices in regard to selection of ma terials in any type of constructions. Due to growin g interest in sustainable construction, engineers and architects are motivate d to choose the materials which are more sustainabl e. Green concrete capable for sustainable construction is characterized by applic ation of industrial wastes to reduce consumption of natural resources and energy and pollution of the environment. Replacement of ma terials over nominal concrete is what makes green cmore environmental friendly concrete. Marble sludge powder, quarry roc ks, crushed concrete and fly ashes are some of the materials used for making green concrete, a sustainable construction.

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Journal ArticleDOI
Abstract: This study investigated the two innovant and high energy efficient corn stalk concretes based on magnesium phosphate cement (MPC) and ordinary Portland cement (OPC) as binders and corn stalk (CS) as plant aggregate. Three different sizes of corn stalks were employed to produce the concrete. The effect of type of binder and size of corn stalk on the hygrothermal, mechanical and microstructure properties of corn stalk concrete were studied. The results revealed that MPC-CS concrete exhibited higher sorption and water vapor permeability as compared to OPC-CS concrete and both binders showed excellent thermal performance. The size of corn stalk was more influential in changing the water absorption, capillary saturation, and thermal properties. Whereas, MPC-CS concrete showed better mechanical performance as compared to OPC-CS concrete. Microstructure analysis of concrete showed that MPC binder had superior cohesion properties and compatibility with corn stalk as compared to OPC binder, which also validated the mechanical results.

12 citations


Journal ArticleDOI
Abstract: This study investigated the detailed optimization of wheat straw ash (WSA) as a pozzolanic material. Characterization of WSA as pozzolanic materials was carried out according to ASTM C618 and resul...

4 citations



Journal ArticleDOI
Abstract: Green concrete is a type of concrete. It is a sustainable material used for the construction of reinforced concrete structures. Green concrete is different compared to normal concrete. Nowadays, it plays a very good role in the construction of structures. It is subjected to very low energy consumption and low resource consumption. Green concrete is a very good material for sustainable development. Concrete is made from the replacement of substituent ingredients such as cement and aggregates. In this waste materials such as agricultural or industrial wastes are placed during manufacture to produce a new concrete. Green concrete is popular worldwide due to its extraordinary properties and applications. This paper mainly deals with the importance of green concrete and its applications, advantages, and disadvantages. The results are varying for based on different structures. So, we can get all characteristics and properties of concrete structures and know their strength.

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Journal ArticleDOI
Abstract: A large proportion of the postconsumer glass is recycled into the packaging stream again, and some smaller proportions are used for a variety of purposes, including concrete aggregate. However, a significant proportion, which does not meet the strict criteria for packaging glass, is sent to landfill, taking the space that could be allocated to more urgent uses. Glass is unstable in the alkaline environment of concrete and could cause deleterious alkali-silica reaction (ASR) problems. This property has been used to advantage by grinding it into a fine glass powder (GLP) for incorporation into concrete as a pozzolanic material. In laboratory experiments, it can suppress the alkali reactivity of coarser glass particles as well as that of natural reactive aggregates. It undergoes beneficial pozzolanic reactions in the concrete and could replace up to 30% of cement in some concrete mixes with satisfactory strength development. The drying shrinkage of the concrete containing GLP was acceptable.

467 citations


Proceedings ArticleDOI
01 Jan 2002

105 citations


"Green concrete for sustainable cons..." refers background in this paper

  • ...[6]....

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  • ...Ahmad SHAYAN [6] has conducted study on the efficiency of glass powder with the help of concrete expansion tests....

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Journal ArticleDOI
Abstract: This research was initiated to evaluate the performance of foundry by-products in concrete and masonry products. Two series of experiments were conducted. The first series of experiments were directed toward the use of an air-cooled foundry slag in concrete as a partial replacement of coarse aggregate. The second series involved the use of foundry sand as a partial replacement of fine aggregate for making masonry blocks and paving stones. In the first series, foundry slag concrete was tested under laboratory conditions. A reference concrete without foundry slag was proportioned to obtain a 28-day compressive strength of 41 MPa. Two other mixes containing 50 and 100 percent foundry slag as a replacement of regular aggregate were also proportioned. The 100 percent slag mix showed compressive strength comparable to the reference mix. However, the modulus of elasticity of concrete containing 100 percent slag was higher than the reference concrete. Four mixes with and without foundry sands were proportioned for the manufacture of masonry blocks with a design strength of 10 MPa at the 28-day age. In addition, four mixes--three with and one without foundry sands--were also proportioned for the manufacture of paving stones with a design strength of 55 MPa at the 28-day age. In all of the mixes, 35 percent regular sand was replaced with new/used foundry sand obtained from different sources; no admixtures were added to the mixes. Test results indicated that masonry blocks made with 35 percent used foundry sand passed the American Society for Testing and Materials (ASTM) requirements for compressive strength, absorption, and bulk density. However, the paving mixes used in this study did not meet the target strength of 55 MPa and showed slightly higher absorption than the ASTM limit for paving stones.

55 citations


01 Jan 2011
Abstract: The buildings and other structures in which we live and work have a tremendous impact on our global environment. Concrete is the world's most abundant building material which can be shaped to make roads, bridges, dams, tunnels, buildings etc. Recently, a research study shows that each year more than six billion tons of concrete are produced worldwide which generates a huge amount of carbon dioxide and other green house gases into the environment that leads to global warming. In recent years, global concerns about climate changes have led the researchers to find ways to minimize carbon dioxide and other green house gas emission. 'Green Construction' seeks to balance resource efficiency, health, and social concerns throughout the life cycle of a structure. Among them green concrete has a variety of benefits to offer in achieving this goal. This paper gives an overview of the present state of green concrete that have reduced environmental impact. It is also emphasized here that the use of green concrete embodies low energy costs, lower green house gas emission and low maintenance cost leading to sustainable construction materials. Furthermore, in terms of resource conservation, reuse of post-consumer wastes and industrial byproducts used as a partial replacement for Portland cement clinker, makes concrete more durable and environmentally friendly.

5 citations


"Green concrete for sustainable cons..." refers background or methods in this paper

  • ...Generally, the comparison of ground granulated blast furnace slag (GGBFS) with Portland cement concrete can be summarized as follows[4]: • Concrete with Type IS cement (Pozzolana cement) or with higher dosages of GGBFS added at the mixer usually will have lower heat of hydration....

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  • ...42 mpa can be readily produced [4]....

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  • ...On average 20% of the rice paddy is husk, giving an annual total production of 120 million tones [4]....

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  • ...By utilizing its cementitious properties of fly ash, we are making best use of its value [1], [2], [3], [4]....

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  • ...And that is why it can reduce the amount of cement in the concrete mix [4]....

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