• Title/Summary/Keyword: 러블라이제이션 공법

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Estimation for optimum crush depth to prevent reflection crack for Rubblized-PCC in PCC pavements (노후콘크리트포장 원위치 파쇄기층(Rubblized-PCC)의 반사균열 억제를 위한 적정 파쇄 깊이 산정)

  • Lee, Seung-Woo;Chon, Sang-Min
    • International Journal of Highway Engineering
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    • v.6 no.4 s.22
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    • pp.101-108
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    • 2004
  • Asphalt overlay method is a general method to extend the of life old concrete pavements. However, reflection cracks are the typical problem of the AC overlay on distressed concrete pavement. Joint sealing, stress absorbtion layer have been used to prevent reflection cracks however partial success of to delay the timing of reflection cracking was recognized. Reflection crack problem can be eliminated by using rubblization method, which crush concrete pavement slab into piece of aggregate size that can be used base material. Previous research on rubblization method indicated that the size of rubblized PCC ranged 40-70mm at upper layer, and more than 100mm at lower layer. In this study, the adequate depth of rubblized PCC that ran prevent reflection cracking of AC overlay is estimated base on the simulation test of reflection cracking with 0, 10, 20cm rubblized PCC base.

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