BEHAVIOR OF AIR-ENTRAINED CONCRETE AFTER FREEZE-THAW CYCLES  

作　　者：Huaishuai Shang Yupu Song Jinping Ou 

机构地区：[1]State Key Laboratory of Structural Analysis for Industrial Equipment, DaIian University of Technology Dalian 116024, China [2]Shandong Provincial Academy of Building Research, Jinan 250031, China [3]State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

出　　处：《Acta Mechanica Solida Sinica》2009年第3期261-266,共6页固体力学学报（英文版）

基　　金：supported by part of the Key Project of the China Postdoctoral Science Foundation(Nos.20080430183 and 200801386);the Promotional Foundation for Excellent Middle-aged or Young Scientists of Shandong Province(No.2008BS08001);National Basic Research Program(No.2007CB714202)

摘　　要：The experimental study of air-entrained concrete specimens subjected to different cycles of freeze-thaw was completed. The dynamic modulus of elasticity, weight loss, the cubic compressive strength, compressive strength, tensile strength and cleavage strength of air-entrained concrete were measured after 0, 100, 200, 300, 400 cycles of freeze-thaw. The experimental results showed that the dynamic modulus of elasticity and strength decreased as the freeze-thaw was repeated. The influences of freeze-thaw cycles on the mechanical properties, the dynamic modulus of elasticity and weight loss were analyzed according to the experimental results. It can serve as a reference for the maintenance, design and the life prediction of dams, hydraulic structures, offshore structures, concrete roads and bridges in northern cold regions.The experimental study of air-entrained concrete specimens subjected to different cycles of freeze-thaw was completed. The dynamic modulus of elasticity, weight loss, the cubic compressive strength, compressive strength, tensile strength and cleavage strength of air-entrained concrete were measured after 0, 100, 200, 300, 400 cycles of freeze-thaw. The experimental results showed that the dynamic modulus of elasticity and strength decreased as the freeze-thaw was repeated. The influences of freeze-thaw cycles on the mechanical properties, the dynamic modulus of elasticity and weight loss were analyzed according to the experimental results. It can serve as a reference for the maintenance, design and the life prediction of dams, hydraulic structures, offshore structures, concrete roads and bridges in northern cold regions.

关 键 词：air-entrained concrete freeze-thaw cycles mechanical properties the dynamic mod-ulus of elasticity weight loss 

分 类 号：TU528.01[建筑科学—建筑技术科学] TU528.042