Device and method for detecting air content in concrete mixture

Abstract

The invention discloses a device and a method for detecting air content of a concrete mixture. The device comprises a probe pole, wherein a temperature sensor and the density sensor are arranged at the lower end of the probe pole, and are connected with an electric testing device; a data collecting and processing device is arranged in the electronic testing device; and a display screen, a key and a printing interface are arranged outside the electronic testing device. The density and the temperature of the concrete mixture are respectively detected by virtue of the density sensor and the temperature sensor; sensor signals are collected, calculated and processed through the electronic testing device; the operation is convenient; the detection speed is high; the air content and the temperature of the concrete mixture can be automatically displayed; and the device and the method are suitable for testing the air content and the temperature of liquid or semi-liquid mixture such as self-compacting concrete, ordinary concrete and cement mortar.

Description

technical field [0001] The invention relates to a concrete mixture detection device, in particular to a concrete mixture air content detection device and method. Background technique [0002] The air content of a concrete mixture refers to the percentage of the ratio of the air bubble volume in the mixture to the total concrete volume. Air content is one of the main performance indicators of concrete mixture. During concrete trial mixing and before pouring, it is necessary to measure the air content in the concrete mixture to control the range of air content in the concrete and meet the quality requirements. [0003] For the determination of the air content of concrete mixtures, an air content tester is usually used for detection. The tester is composed of a container and a cover; during the test, the concrete mixture is divided into three layers into the container, and each layer is loaded with a stamper. After the rod is tamped, after it is filled and leveled, install th...

AI Technical Summary

Problems solved by technology

[0004] This test method is complicated to operate, time-consuming and labor-intensive, and even affects the efficiency and quality of concrete pouring

For example, when pouring self-compacting concrete into the filling layer under the slab-type ballastless track slab of a high-speed railway, it is required to test multiple indicators such as air content, temperature, and slump expansion before on-site pouring. If the test time is too long, it will not only affect the construction efficiency, but also affect Self-compacting concrete properties and pouring quality

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