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| Test and Study on the Long-age Performance of Cement Concrete Pavement Material |
| LIU Ying, TIAN Bo, WANG Ji-liang |
| Research Institute of Highway, Ministry of Transport, Beijing 100088, China |
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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.
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Received: 14 December 2013
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| Fund:Supported by the Road and Transport R&D Project for Western Regions of China Commissioned by Ministry of Transport (No.200731822301-6) |
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Corresponding Authors:
LIU Ying, y.liu@rioh.cn
E-mail: y.liu@rioh.cn
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2014, Vol. 8 
