An overview of the properties and characteristics of geopolymer concrete with different base materials

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

MOMENI K.; Sahavi A.; NAGHDI K.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Modares Civil Engineering journal Year:2021 | Volume:21 | Issue:6 Page(s): 169-179

Download Full-Text

Persian Verion

View:

185

Download:

Cites:

Information Journal Paper

Title

An overview of the properties and characteristics of geopolymer concrete with different base materials

Author(s)

MOMENI K. | Sahavi A. | NAGHDI K. | Issue Writer Certificate

Keywords

Not Registered.

Abstract

Since the development of the construction industry in the field of concrete structures, this material has been known as one of the most commonly used substances in the last century. Extensive use in industries such as bridge construction, dam construction, landscaping, construction structures, and construction of ports, piers and special structures has made concrete a valuable material and made it the center of attention of many researches. But production of Portland cement requires consumption of natural resources such as limestone, fossil fuels and also electrical energy which emit significant amounts of greenhouse gases, resulting in environmental pollution. Therefore, it is better to look for other materials to replace Portland cement. Geopolymers can be a suitable and inexpensive alternative to various types of cement because the raw materials used to produce them are more accessible than that of the conventional cements. Additionally, because geopolymers are produced in lower temperatures, the emission of pollutants such as carbon dioxide produced by cement kilns is prevented. The World Environment Commission has defined the concept of sustainable development as the ability to meet the current needs without compromising the ability of future generations to meet their needs. This definition requires increased consideration of all aspects of a particular industry from the supply of raw materials and energy consumption to reuse or recycling. Therefore, the shortage of low-cost raw materials in the future of cement and concrete industry should be carefully considered. Because in the production of cement, the use of materials based on limestone is common and reserves of limestone are limited, the concrete industry is facing multiple challenges to provide an increasing need for Portland cement. In fact, due to this shortage and increasing production of Portland cement, these goods can only be produced for less than 59 years. In 2011, the world’, s cement production was about 3. 6 billion tons which means that more than 3 billion tons of limestone was needed to produce clinker which illustrated that the limestone reserves were already running low. Geopolymer concrete consists of two main parts: the base material and the activating material. The base material is actually a combination of aluminosilicates, and since natural and synthetic pozzolans are rich sources of such compounds, they can be used as base material. Different forms of Pozzolans such as silica or silica-aluminum materials have little effect or no adhesion value,however, in a very ultrafine form and in the presence of moisture during the chemical reactions with the activating substance at normal temperature, compounds with cementitious properties can be formed. This process is called pozzolanic reaction, and the types of pozzolans that can be mentioned are raw or calcined natural pozzolans such as volcanic ash, and industrial pozzolans such as fly ash, calcite clay, silica fume, iron slag, rice husk ash, etc. Based on the definitions of the activating substance, it can be said that it is an alkaline solution that dissolves aluminum and silicon ions in the base material, and by performing the reaction, it forms the composition of geopolymer paste. The most important activating solutions in the research are sodium hydroxide, potassium hydroxide, sodium silicate, sodium carbonate and potassium silicate, and compared to other alkalis, sodium hydroxide and potassium hydroxide show higher levels of alkalinity.

Multimedia

No record.

Cites

No record.

References

No record.

Cite

APA: Copy

MOMENI, K., Sahavi, A., & NAGHDI, K.. (2021). An overview of the properties and characteristics of geopolymer concrete with different base materials. MODARES CIVIL ENGINEERING JOURNAL, 21(6 ), 169-179. SID. https://sid.ir/paper/1036299/en

Vancouver: Copy

MOMENI K., Sahavi A., NAGHDI K.. An overview of the properties and characteristics of geopolymer concrete with different base materials. MODARES CIVIL ENGINEERING JOURNAL[Internet]. 2021;21(6 ):169-179. Available from: https://sid.ir/paper/1036299/en

IEEE: Copy

K. MOMENI, A. Sahavi, and K. NAGHDI, “An overview of the properties and characteristics of geopolymer concrete with different base materials,” MODARES CIVIL ENGINEERING JOURNAL, vol. 21, no. 6 , pp. 169–179, 2021, [Online]. Available: https://sid.ir/paper/1036299/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops