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Characteristics of Elastic Paving Material Made of Sawdust and Urethane Resin Mixture

톱밥과 우레탄 수지 혼합물로 제조한 탄성 포장재의 특성

  • Choi, Jae-Jin (Department of Civil & Environmental Engineering, Kongju National University) ;
  • Lee, Kwan-Ho (Department of Civil & Environmental Engineering, Kongju National University) ;
  • Moon, Seung-Kwon (SGS Korea Construction Materials Testing Center)
  • 최재진 (공주대학교 건설환경공학부) ;
  • 이관호 (공주대학교 건설환경공학부) ;
  • 문승권 (한국에스지에스(주) 건설시험연구원)
  • Received : 2017.03.02
  • Accepted : 2017.06.09
  • Published : 2017.06.30

Abstract

Research and commercialization of wood chips-urethane resin mixtures as paving materials for park trails and tourist attractions are underway. The aim of this study was to expand the use of such paving materials to the playgrounds, where vigorous physical movements occur frequently. For this purpose, the physical properties and safety of the paving material, in which some or all of the wood chips(passing through a 10mm sieve and remaining in a 3mm sieve) were replaced with sawdust, were studied experimentally. Strength, elastic modulus, slip resistance, shock absorption and heavy metal content tests were carried out by varying the mixing ratio of urethane resin, sawdust and wood chip. As a result, in the case of wood chip-resin mixtures with mass ratios of the resin to total mass of sawdust and wood chips of 1.0 and 1.2 and having a ratio of sawdust mass to total mass of sawdust and wood chips of 0-0.4, it was found that the properties satisfied KS F 3888-2. On the other hand, in case of using sawdust only as a woody material, the shock absorbability was below standard, and the mass ratio of resin to sawdust required 1.2 or more to ensure the specified tensile strength.

Keywords

Heavy Metal;Paving Material;Sawdust;Urethane;Shock Absorption;Strength

Acknowledgement

Supported by : 공주대학교

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