DOI QR코드

DOI QR Code

Study on the Effect of SBR Latex on the Properties of Soil Pavement

SBR Latex를 이용한 흙 포장의 재료특성 연구

  • 이상염 (서울특별시 품질시험소 도로포장연구센터) ;
  • 황성도 (한국건설기술연구원) ;
  • 양성린 (한국건설기술연구원)
  • Received : 2014.09.21
  • Accepted : 2014.10.06
  • Published : 2014.10.16

Abstract

PURPOSES : The purpose of this study is to determine the optimum addition rate of SBR latex through the evaluation of durability and strength of SBR latex applied soil pavement. Formerly used materials such as fly ash and cement in soil pavement had resulted in decreased durability due to micro crack by heat of hydration and shrinkage crack in winter. However, that agglutinated polymers help adhesion to aggregate increased comes up with preventing the crack opening when the number of capillary tubes of SBR latex get decreased in the hydration process of cement. Therefore, in this study, it is suggested that the evaluation of the field applicability of soil pavement be conducted through the performance lab test in terms of strength increment, adhesion improvement, and crack resistance based on SBR latex addition rate. METHODS : In order to evaluate the field applicability of soil pavement, SBR latex was added 0 to 3% by 1% increment, with fixed cement contents of 3% and 5%. The resistance of shear failure and crack of soil pavement were evaluated by performing the uniaxial compressive strength test and indirect tensile strength test at -20 and $20^{\circ}C$, respectively. RESULTSCONCLUSIONS : It was found out that from both tests, resistance of shear failure and crack were improved with increment of curing time, and especially more than 2% of SBR latex addition rate and 5% cement content gave better results.

Keywords

References

  1. Chiang, L. R and Y. S. Chae(1972), "Dynamic properties of Cement Treated Soils", H. R. R., p.379.
  2. Dvidson, D. T., G.L Pitre and K. P. George(1972), "Moisture Strength and Compaction Characteristics of Cement Treated Soil Mixtures", H. R. B. Bull, p.353
  3. S. G. Kim, W. J. Kim, H. B. Kang and J. R. Kim(2006), "A Study of Engineering Characteristics of Soil-cement", the Korean Society of Civil Engineers conference regular 2006, pp.1657-1660.
  4. Portland Cement Association(PCA)(1992), "Soil-Cement Laboratory Handbook", Skokie, Ill.
  5. Yoshihiko Ohama(1987), "Concrete Admixtures Handbook", コンクリ一ト工學, Vol. 25, 1987.
  6. W. K. Jeong, D. H. Kim and K. K. Yun(2005), "Estimation of Durability in Freezing and Thawing of Concrete for Plane Spacing Factor", Journal of the Korean Society of Civil Engineers, Vol. 25, No. 5.