The Research Of Local Traffic Engineering Strength Curves By The Coupled Ultrasonic-Resilience Concrete Strength Checking Method In Zhengzhou

In 2010, the infrastructure construction item number in highway of Zhengzhou and amount of investment is through the years it is most.On account of starting construction unit many, construction the craft level isn't even, construction work period request strain, the engineering quality easily appears a problem.Face this circumstance, The Coupled Ultrasonic-Resilience Concrete Strength Checking (CURCOSC) method is generally accepted because of its quickness and accurate. However, the local traffic engineering strength curves in Zhengzhou, Henan metropolis,have to be setup for the rational adjustment of concrete strength. Dozens of specimens are made in several strength and age groups. The CURCOSC method is firstly applied to the specimens; then, the load bearing capacity tests are carried out until the specimens are destroyed completely. Finally, the least square principle is used to set up the locally strength curve for CURCOSC method.For the purpose of promotion of the suggested curve, some practical strength assessment projects are carried out, which show that the suggested curve are more accurate than that recommended ones in the National Code. Then, sampled engineering entity to carry on The CURCOSC method examination.Experiment result satisfy The CURCOSC method, be a reference usage.