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Çѱ¹µµ·ÎÇÐȸ / v.9, no.1, 2007³â, pp.47-56
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( Effect of Stress State and Moisture Condition on the Resilient Behavior of Subgrade Soils in Test Roads )
¹Ú¼º¿Ï;ÀÌÄ¡Çå;Ȳ±Ô¿µ; ´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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Resilient characteristics on unbound pavement materials have been adopted for design and nonlinear analysis of pavement structure under traffic loadings. However, relatively few studies have been done on the nonlinear resilient behavior of unbound materials in Korea. In addition to that, only the limited information is available for estimating the resilient modulus values on subgrade soils. In this study, a laboratory resilient-deformation test under repeated loadings is performed in order to establish the nonlinear characteristics of unbound subgrade soils in test roads. Then, a constitutive model that correlates the resilient modulus with moisture and stress state from field condition is proposed respectively. The results from all procedures are presented in this paper. Finally, a comparative analysis is conducted to identify the proper models in the stress dependent modulus and seasonal moisture condition of subgrade soils in test roads respectively.
 
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ȸº¹Åº¼º°è¼ö;³ë»óÅä;±¸¼º¹æÁ¤½Ä;ÇÔ¼öºñ;resilient modulus;subgrade soil;constitutive model;moisture condition;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.9, no.1, 2007³â, pp.47-56
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200712242667416)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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