LOADING AND LOAD MAINTENANCE SYSTEM FOR CONCRETE CREEP TEST

摘要

PURPOSE: A load maintaining system for concrete creep test is provided to automatically compensate insufficient fluid pressure during test by the installation of a pressure controlling device on a hydraulic jack. CONSTITUTION: A load maintaining system for concrete creep test comprises an air compressor(110), an air pressure pump(120), a creep tester(130), and a pressure controlling device(140). The air compressor produces the compressed air using an electric motor. The air pressure pump is connected to the air compressor. The air pressure pump circulates compressed air produced by the air compressor. The load is applied on an object by compressed air supplied through the air pressure pump. The creep tester applies load through a hydraulic jack to measure the transformation of the object. The pressure controlling device adjusts the air pressure supplied to the creep tester from the air pressure pump to maintain fixed pressure.