Physical Characteristic of Ready Mixed Concrete with Different Replacement Ratio of Recycled Aggregate

Seung Joe Yoon; Soo Yeon Seo; Woo Jin Lee

doi:10.4028/www.scientific.net/AMR.26-28.345

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 26-28Physical Characteristic of Ready Mixed Concrete...

Physical Characteristic of Ready Mixed Concrete with Different Replacement Ratio of Recycled Aggregate

Abstract:

Researches until now about recycled aggregate have mainly focused on illuminating physical properties and mechanical behaviors of recycled aggregate by experimenting on small batches of mixing. Unfortunately this kind of mixing does not necessarily fit the reality where a large amount of ready-mixed concrete is often made. Therefore, this study carried out an experiment by having a ready-mixed concrete manufacturing company mix a large amount of recycled aggregate that satisfies quality standard set by the MCT of Korea, then verifying the behaviors of recycled aggregate concrete. The target concrete compressive strength was selected as 24MPa had a slump flow for 120±25mm and air content of 5.0±1.5%, that is used most in site. The main experiment variable of this study is to replacement ratio of recycled aggregate(RA). The 27 test specimens were designed with recycled aggregate replacement ratio that had range of coarse recycled aggregate(CRA), 0, 10, 20, 30, 40, and 50%. The result shows that replacing the natural aggregate with the recycled one up to the ratio of 30% satisfies the quality standard for mixing concrete properly.

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Periodical:

Advanced Materials Research (Volumes 26-28)

Pages:

345-348

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.26-28.345

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Online since:

October 2007

Authors:

Seung Joe Yoon, Soo Yeon Seo, Woo Jin Lee

Keywords:

Mechanical Property, Recycled Aggregate (RA), Recycled Concrete (RC)

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References

[1] Quality Standard of the Recycled Aggregates, Ministry of Construction & Transportation Korea, (2005).

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