摘要Experimental research is conducted to determine the long-age statistical parameters of road pavement properties such as flexural strength, flexural elastic modulus, compressive strength, and splitting strength after 18 months. Changes in regularity are analyzed, and the functional equations of the performance indices with the age of pavement concrete material are fitted. The differences in performance under the conditions of standard indoor curing and outdoor natural curing are then compared. The regularity of concrete strength varying with age, the relationship between flexural strength and splitting strength, and relationship between compressive strength and flexural strength are discussed. A comprehensive summary of the development rule of the long-age performance of road pavement concrete materials is performed. Finally, by analyzing the data of the ratio of compressive strength to flexural strength, it is recommended that controlling the flexural strength and water-cement ratio can reduce the brittleness of the concrete slab.
Abstract:Experimental research is conducted to determine the long-age statistical parameters of road pavement properties such as flexural strength, flexural elastic modulus, compressive strength, and splitting strength after 18 months. Changes in regularity are analyzed, and the functional equations of the performance indices with the age of pavement concrete material are fitted. The differences in performance under the conditions of standard indoor curing and outdoor natural curing are then compared. The regularity of concrete strength varying with age, the relationship between flexural strength and splitting strength, and relationship between compressive strength and flexural strength are discussed. A comprehensive summary of the development rule of the long-age performance of road pavement concrete materials is performed. Finally, by analyzing the data of the ratio of compressive strength to flexural strength, it is recommended that controlling the flexural strength and water-cement ratio can reduce the brittleness of the concrete slab.
基金资助:Supported by the Road and Transport R&D Project for Western Regions of China Commissioned by Ministry of Transport (No.200731822301-6)
通讯作者:
LIU Ying, y.liu@rioh.cn
E-mail: y.liu@rioh.cn
引用本文:
刘英, 田波, 王稷良. 水泥混凝土路面材料长龄期性能试验研究[J]. Journal of Highway and Transportation Research and Development, 2014, 8(2): 11-17.
LIU Ying, TIAN Bo, WANG Ji-liang. Test and Study on the Long-age Performance of Cement Concrete Pavement Material. Journal of Highway and Transportation Research and Development, 2014, 8(2): 11-17.
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