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http://dx.doi.org/10.14190/JRCR.2021.9.2.135

The Effect of Recycled Aggregate Produced by the New Crushing Device with Multi-Turn Wings and Guide Plate on the Mechanical Properties and Carbonation Resistance of Concrete  

Cho, Sung-Kwang (G-Bon IP LAW Firm)
Kim, Gyu-Yong (Department of Architectural Engineering, Chungnam National University)
Eu, Ha-Min (Department of Architectural Engineering, Chungnam National University)
Kim, Yong-Rae (Sin Hwa Environment Development)
Lee, Chul-Min (Dong Yang RD)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.9, no.2, 2021 , pp. 135-142 More about this Journal
Abstract
In this work, multi-turn wings and guide plates are installed on recycled aggregate crushing devices to improve existing low recycled aggregate quality. Simulation analysis to evaluate the crushing efficiency of the new device shows enhanced crushing efficiency since the installation of guide plates shreds most of the inputs inside the crushing drum, and the multi-turn wings and guide plates induce rebound and circulation of the aggregate. Through this, the new device was found to be more economical and efficient than the existing recycled aggregate crushing device. Also, the amount of cement paste and mortar attached to the surface of the aggregate was smaller than that of the existing recycled aggregate, and it was found that the mechanical properties and elastic modulus deterioration were reduced. However, the carbonation resistance of concrete was not improved to the level of natural aggregates due to the remaining tiny cement paste and mortar on the surface of the new recycled aggregate. Therefore, it is deemed necessary to further research and experiment such as device improvement or binder development to reduce durability degradation of concrete mixed with new recycled aggregate.
Keywords
Multi-turn wing; Guide plate; Recycled aggregate; Mechanical properties; Carbonation resistance;
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1 Berndt, M.L. (2009). Properties of sustainable concrete containing fly ash, slag and recycled concrete aggregate, Construction and Building Materials, 23(7), 2606-2613.   DOI
2 Choi, W.Y., Lee, S.H., Kim, S.H. (2017). A comparative study on the quality of recycled aggregate for concrete by crushing method, Journal of the Korean Recycled Construction Resources Institute, 5(2), 121-129.   DOI
3 Japanese Institute of Architecture. (2004). Durability Design Construction Guidelines for Reinforced Concrete Structures, 99, 92-108.
4 Kishitani, K. (1963). Durability of muscle concrete, Kajima Construction Technology Research Institute Publishing Department, 65-70.
5 Kwon, S.J., Lim, H.S., Lee, H.S, Lim, M.K. (2018). Mechanical properties of recycled coarse aggregate concrete using two-stage mixing approach, Journal of The Korea Institute for Structural Maintenance and Inspection, 22(4), 60-67.   DOI
6 Lee, S.Y., Kim, G.Y., Yoon, M.H., Na, C.S., Lee, S.K., Shin, S.G., Nam, J.S. (2019). Monitoring on compressive strength and carbonation of reinforced concrete structure with 100% recycled aggregate, Journal of the Korea Institute of Building Construction, 19(5), 383-389.   DOI
7 Na, C.S., Kim, Y.R. (2016). Production technology for concrete recycling coarse aggregate by multiple-stage rotor and guide board installed to vertical type impact crusher, Korean Recycled Construction Resources Institute, 11(3), 29-31.
8 Kim, D.G., Yang, K.H., Seo, E.A., Yoon, H.S. (2020). Evaluation on the physical properties and paste adhesion of recycled coarse aggregates produced through different dry treatments, Journal of the Korea Concrete Institute, 32(2), 185-191.   DOI
9 Yoda, K. (1979). Failure due to the occurrence of cracks 3 Durability decrease, Architecture Magazine. 94. 16-17.
10 Etxeberria, M., Vazquez, E., Mari, A., Barra, M. (2007). Influence of amount of recycled coarse aggregates and production process on properties of recycled aggregate concrete, Cement and Concrete Research, 37(5), 735-742.   DOI
11 Kwan, W.H., Ramli, M., Kam, K.J., Sulieman, M.Z. (2012). Influence of the amount of recycled coarse aggregate in concrete design and durability properties, Construction and Building Materials, 26(1), 565-573.   DOI
12 Moon, K., Park, S., Kim, S. (2019). Compressive strength of concrete due to moisture conditions of recycled coarse aggregates and curing conditions, Journal of the Korean Society of Civil Engineers, 39(4), 485-492.
13 Padmini, A.K., Ramamurthy, K., Mathews, M.S. (2009). Influence of parent concrete on the properties of recycled aggregate concrete, Construction and Building Materials, 23(2), 829-836.   DOI
14 Thomas, C., Setien, J., Polanco, J., Alaejos, P., De Juan, M.S. (2013). Durability of recycled aggregate concrete, Construction and Building Materials, 40, 1054-1065.   DOI
15 Han, S.K., Park, O.Y., Jang, H.O. (2020). A technology to remove organic matters and improve segregation of recycled aggregates by using rotational rakes separator and tornado vacuum separator, Korean Recycled Construction Resources Institute, 15(2), 39-44.
16 Kong, D., Lei, T., Zheng, J., Ma, C., Jiang, J., Jiang, J. (2010). Effect and mechanism of surface-coating pozzalanics materials around aggregate on properties and ITZ microstructure of recycled aggregate concrete, Journal of Construction and Building Materials, 24(5), 701-708.   DOI