Research purposes:Mass concrete is commonly used in civil engineering and one important aspect to control the quality of mass concrete is to avoid the appearance of the temperature crack．The research was done on then temperature change law of the mass concrete by simulating the monitored temperature change of the mass concrete core with the small scale model，by measuring the temperature change of the concrete in the core of the arch abutment and by adopting numerical simulation for the purpose of knowing the change law of the mass concrete core by doing the tests with the small scale model to cut the test difficulty and economic cost and provide the reference to the similar research．
Research conclusions:The temperature change of the core test piece of the mass concrete simulated by the small scale model was similar to the measured temperature change of the concrete in the center of the arch abutment and to the temperature change law of the numerical simulation． The original concrete model test is difficult to do and this method is new way to monitor and measure the temperature change law by simulating the temperature change of the mass concrete core with the small scale model，featured with easy operation，money saving，being good for doing the research on the mechanic property and durability of the mass concrete in lab，being helpful to master the temperature change law of the mass concrete core and offering the reference to similar works．
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