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- W2005776692 abstract "현재 기존 동상방지층 설계법에 따르면, 동상방지층은 도로 노상토의 동상특성이 아닌 온도에 따른 동결깊이에 근거해 일률적으로 결정되어 포장설계의 부실 또는 과다설계 우려가 있다. 도로는 다양한 재료와 단면으로 구성된 구조물이기 때문에 환경성과 재료 물성 뿐만 아니라 포장체 각 층의 구조적 적정성 또는 지지력을 파악하는 것이 무엇보다 중요하다. 따라서 본 논문에서는 대형 냉동고내에 실내모형토조를 구성하여 포장하부구조재료(노상층, 쇄석골재층)의 시간에 따른 온도와 동상량 변화, 동결융해에 따른 지반의 지지력 변화를 통하여 포장하부구조체의 역학적 관계를 분석하였다. In the current design codes for anti-freezing layer, the thickness of anti-freezing layer is calculated by freezing depth against the temperature condition. Therefore, they have a tendency of over-design and uniform thickness without the considerations of thermal stability, bearing capacity and frost susceptibility of materials. So, it is essential for studying the appropriateness and bearing capacity of road foundation materials as well as their seasonal and mechanical properties to take an appropriate and reasonable design of the road structure system. In this paper, the freezing and bearing capacity characteristics of typical road foundation materials were evaluated in the large scale laboratory test. LFWD (light falling weight deflectometer) was used to determine the change of elastic modulus (<TEX>$E_{LFWD}$</TEX>) caused by to the frost heave and thaw. Furthermore, the influence of crushed natural aggregate on the freezing of the subgrade soil was studied to verify the function and effectiveness of the anti-freezing layer." @default.
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- W2005776692 date "2012-03-31" @default.
- W2005776692 modified "2023-09-26" @default.
- W2005776692 title "Freezing and Bearing Capacity Characteristics of Road Foundations under Temperature Condition" @default.
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- W2005776692 doi "https://doi.org/10.7843/kgs.2012.28.3.5" @default.
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