The use of limestone powder instead of a part of silica sand in reactive powdered concrete

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.

Chakherlou javid; Shervanitabar Bahman

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

Journal Paper

Paper Information

Journal: Modares Civil Engineering journal Year:2018 | Volume:18 | Issue:6 Page(s): 51-61

Download Full-Text

Persian Verion

View:

1,230

Download:

Cites:

Information Journal Paper

Title

The use of limestone powder instead of a part of silica sand in reactive powdered concrete

Author(s)

Chakherlou javid | Shervanitabar Bahman | Issue Writer Certificate

Keywords

Reactive Powder ConcreteQ2

Compressive StrengthQ1

ConsistencyQ1

CuringQ1

Limestone PowderQ2

Abstract

Reactive Powder Concrete (RPC) is a ultra-powerful concrete with superior physical and mechanical properties, which was registered in France in 1994. This concrete uses high cement factor, fine powdered materials, low water to cement ratio, and the use of superplasticizer with high Compressive Strength and very low permeability, high durability and abrasion resistance. the high amount of cement and microsilica used in this concrete not only increases the cost of production, but also increases the heat of hydration. On the other hand, cement production can have harmful effects on the environment. In the production of Reactive Powder Concrete, fine-grained powder materials such as silica sand, microsilica, and quartz powder are used as materials. This concrete has a high Compressive Strength compared to conventional concrete, which has attracted much attention in recent years. With this type of concrete, the weight of the structure can be significantly reduced, and its important features include high Compressive Strength, low permeability, durability and abrasion resistance and high ductility that can absorb more energy during an earthquake. In this research, Limestone Powder was used instead of a part of silica sand. For this purpose, after obtaining optimal mixture ratios based on the Compressive Strength, Consistency and diffusion diameter of flow table test, first, the Limestone Powder is considered as partial substitute of silica sand with percentages of 0, 10, 20, 30, and then in continuation, Limestone Powder is used as a substitute-additive with percentages and mixing ratios. Experiments conducted on these samples include testing the flow table, water absorption during Curing and Compressive Strength at the age of 7, 28 and 90 days. The results of the experiments show that by increasing the Limestone Powder up to 20% replacement with silica sand, the Compressive Strength significantly increases, and also reduces the water absorption during of Curing. The Compressive Strength of mixtures containing 20% Limestone Powder is 43% higher than the base concrete for 28-day samples. This increase in Compressive Strength for 7-day and 90-day samples is 39% and 42%, respectively. Water absorption during of Curing for 28-day samples decreased by 19. 7%. In these experiments, it has been attempted to cure under normal environmental conditions (temperatures of 23 to 25 ° C without pressure) and also to be sufficiently fluid in condition of loose concrete or self compacting concrete, so it can easily be used in practical applications. For example, in connections with the number of overlapping reinforcements, ordinary concrete does not have the capacity to fill the very small spaces. In such connections we can use these mixtures. The cement content is 780kg. In order of cement content, it should be noted that the cement content of Reactive Powder Concrete is about 700 to 1000 kg, and is used in mixtures up to 1200 kg. So here the cement content is moderate and the lower part of moderate. There is also no pressure and heat to be used in Curing of concrete, and the amount of water and superplasticizer is somewhat higher than similar mixtures, so obtained fresh concrete is SCC. These conditions resulted in less Compressive Strengths than similar mixtures, but they are sufficiently strong for use in building projects, and even more so. The Compressive Strength of mixtures containing 20% Limestone Powder at 28 days of age reached 582 kg/cm2 and at 90 days of age, it reached648kg/cm2.

Cites

No record.

References

No record.

Cite

APA: Copy

Chakherlou, javid, & Shervanitabar, Bahman. (2018). The use of limestone powder instead of a part of silica sand in reactive powdered concrete. MODARES CIVIL ENGINEERING JOURNAL, 18(6 ), 51-61. SID. https://sid.ir/paper/256718/en

Vancouver: Copy

Chakherlou javid, Shervanitabar Bahman. The use of limestone powder instead of a part of silica sand in reactive powdered concrete. MODARES CIVIL ENGINEERING JOURNAL[Internet]. 2018;18(6 ):51-61. Available from: https://sid.ir/paper/256718/en

IEEE: Copy

javid Chakherlou, and Bahman Shervanitabar, “The use of limestone powder instead of a part of silica sand in reactive powdered concrete,” MODARES CIVIL ENGINEERING JOURNAL, vol. 18, no. 6 , pp. 51–61, 2018, [Online]. Available: https://sid.ir/paper/256718/en

Related Journal Papers