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Çѱ¹µµ·ÎÇÐȸ / v.10, no.1, 2008³â, pp.105-115
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( Effect of temperature and moisture on curling of early age concrete slabs )
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It is known that the long-term behavior and performance of jointed concrete pavement due to slab curling are affected by the environmental factors such as temperature, moisture, and so on. However, any relationships between the curling and its factors have not been defined clearly yet because of insufficient detailed investigation. The temperature, relative humidity, strain, vertical displacement of a concrete slab, and horizontal movement of its transverse joints were investigated by various sensors and devices instrumented in the slab of a concrete pavement section constructed for this study. The constraint of the curling by joint stiffness was investigated in addition to effect of the temperature and moisture on the early aged concrete slab by analyzing the field data measured for approximately 4days from concrete placement. The curling of the concrete slab showed 24hour cycles mainly because of the temperature effect, and the upward curling gradually increased because of the long-term effect of drying shrinkage of the concrete. The magnitude and variation of the curling were significantly affected by the joint stiffness which is comprised of aggregate interlocking and other factors. The effect of the variation of the seasonal joint stiffness varying with the temperature and long-term drying shrinkage on the slab curling will be investigated as a further study.
 
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ÄÜÅ©¸®Æ® Æ÷Àå;½½·¡ºê Äøµ;¿Âµµ;»ó´ë½Àµµ;°ÇÁ¶¼öÃà;º¯Çü·ü;¿¬Á÷º¯À§;ÁÙ´«°­¼º;concrete pavement;slab curling;temperature;relative humidity;drying shrinkage;strain;vertical displacement;joint stiffness;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.10, no.1, 2008³â, pp.105-115
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200814364662020)
¾ð¾î : Çѱ¹¾î
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