Unconfined Compressive Strength and Microstructure of Marginal Lateritic Soil Improved by Recycled Asphalt Pavement (RAP) and Cement

Authors

  • จิระยุทธ สืบสุข
  • เบญจพล ขุนวิเศษ
  • อนิรุทธิ์ สุขแสน
  • เชิดศักดิ์ สุขศิริพัฒนพงศ์
  • คมกร ไชยเดชาธร

Keywords:

Marginal lateritic soil, Recycled asphalt pavement, Cement, Unconfined compressive strength, Microstructure

Abstract

This research presents the marginal lateritic soil improved by mixing with recycled asphalt pavement (RAP) and cement. The improved soils have been studied for using as soil-cement base course. The studies were performed by the unconfined compression test and microstructure analysis on the mix materials under different proportions. Based on the experiment result, it was seen that as increasing in RAP content, the unconfined compressive strength () tends to decrease significantly. Although the soil-RAP mixtures were treated by cement, the large reductions in  have been clearly seen for the samples with RAP content higher than 50%. The asphalt binder in RAP obstructs the hydration product for attaching with soil aggregates.

References

[1] Department of highway, “Standard No. DH-S 213/2000, Pavement recycling,” Thailand, 2000.
[2] P.J. Cosentino, E.H. Kalajian, C.H. Shieh,, W.J.K. Mathurin, F.A. Gomez, E.D. Cleary, and A. Treeratrakoon, “Developing Specifications for Using Recycled Asphalt Pavement as Base, Subbase or General Fill Materials, Phase II, Rep. No. FL/DOT/RMC/06650-7754,” Florida Institute of Technology, 2003.
[4] A.J. Puppala, L.R. Hoyos, and A.K. Potturi, “Resilient Moduli Response of Moderately Cement-Treated Reclaimed Asphalt Pavement Aggregates,” Journal of Materials in Civil Engineering, Vol. 23, No. 7, pp. 990-998, 2011.
[5] A.J. Puppala, S. Saride, and R. Williammee, “Sustainable Reuse of Limestone Quarry Fines and RAP in Pavement Base/Subbase layers,” Journal of Materials in Civil Engineering, Vol. 24, No. 4, pp. 418-429, 2012.
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[7] ASTM, “ASTM D254-14, Standard Test Methods for Specific Gravity of Soil Solids by Water Pycnometer,” ASTM International, West Conshohocken, PA., 2014.
[8] ASTM, “ASTM D4318-10e1, Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils,” ASTM International, West Conshohocken, PA., 2010.
[9] ASTM, “ASTM D422-63(2007), Standard Test Method for Particle-Size Analysis of Soils,” ASTM International, West Conshohocken, PA., 2007.
[10] ASTM D5102-09, Standard Test Method for Unconfined Compressive Strength of Compacted Soil-Lime Mixtures, ASTM International, West Conshohocken, PA., 2009.
[11] Department of highway, “Standard No. DH-S 204/2556, Soil cement base,” Thailand, 2013.

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Published

2020-06-19

How to Cite

[1]
สืบสุข จ. ., ขุนวิเศษ เ. . . . . . ., สุขแสน อ. ., สุขศิริพัฒนพงศ์ เ. ., and ไชยเดชาธร ค. . ., “Unconfined Compressive Strength and Microstructure of Marginal Lateritic Soil Improved by Recycled Asphalt Pavement (RAP) and Cement”, Eng. & Technol. Horiz., vol. 33, no. 2, pp. 111–116, Jun. 2020.

Issue

Vol. 33 No. 2 (2016): april -june

Section

Research Articles

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