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Measuring device for fresh concrete air content under vibration and temperature change conditions

A measuring device and concrete technology, applied in the direction of analyzing materials, instruments, etc., can solve the problems of easy bubble breakage and no temperature adjustment function.

Active Publication Date: 2016-09-14
黑龙江省翔波新材料新技术应用开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the measurement of the air content of most fresh concrete does not consider the influence of the vibration parameters of the vibrator in the construction process. For example, the authorized announcement number is CN102590021A, the announcement date is July 18, 2012, and the name is "New The invention patent of "Gas Content Tester for Mixed Concrete" is to complete the gas content measurement of fresh concrete without considering the influence of vibration conditions.
In addition, since the existing fresh concrete air content measurement device does not have the function of temperature adjustment, the air content of fresh concrete is different at different temperatures, such as the temperature rises, the air bubbles are easy to break

Method used

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  • Measuring device for fresh concrete air content under vibration and temperature change conditions
  • Measuring device for fresh concrete air content under vibration and temperature change conditions
  • Measuring device for fresh concrete air content under vibration and temperature change conditions

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Specific implementation mode one: as Figure 1~Figure 3 As shown, the device for measuring the air content of fresh concrete under the conditions of vibration and temperature change includes a cylindrical container 1, a water level gauge 2 and a stirring paddle 3, and the cylindrical container 1 includes an upper semi-cylindrical container 1-1 and the lower semi-cylindrical container 1-2, the lower end of the upper semi-cylindrical container 1-1 is detachably sealed with the upper end of the lower semi-cylindrical container 1-2, and the upper end of the upper semi-cylindrical container 1-1 is in the shape of a cone , the water level gauge 2 is threadedly connected to the inner peripheral surface of the upper port of the upper semi-cylindrical container 1-1, the lower end of the lower semi-cylindrical container 1-2 is an open end, and the stirring paddle 3 is arranged in the lower semicircle In the cylindrical container 1-2, the device for measuring air content of fresh ...

specific Embodiment approach 2

[0032] Specific implementation mode two: as figure 1 , image 3 As shown, the device for measuring the air content of fresh concrete under the conditions of vibration and temperature change described in Embodiment 1, the stirring paddle 3 is composed of a central tube 3-1, a paddle cover 3-2 and four frame paddles leaves 3-3; the four frame-type blades 3-3 are arranged symmetrically with respect to the center line of the blade cover 3-2, and the four frame-type blades 3-3 are all connected to the center line of the blade cover 3-2. The outer peripheral surface is welded vertically, the inner peripheral surface of the blade cover 3-2 is provided with internal threads, the upper end of the outer peripheral surface of the central tube 3-1 is provided with external threads, and the upper end of the central tube 3-1 is arranged on the paddle In the sleeve 3-2, and the two are connected by threaded fastening.

[0033] The beneficial effect of the second embodiment is: the motor 13...

specific Embodiment approach 3

[0034] Specific implementation mode three: as figure 1 As shown in the specific embodiment 1, the device for measuring the air content of fresh concrete under the condition of vibration and temperature change, the vibratory hammer 9 is composed of a hammer head 9-1, a hammer handle 9-2 and a hammer shaft 9-3 ; The upper end of the hammer rod 9-3 is welded to the middle part of the lower surface of the hammer head 9-1, and the lower end of the hammer rod 9-3 is welded to the middle part of the upper surface of the hammer handle 9-2.

[0035] The beneficial effect of the third specific embodiment is: by adjusting the rotational speed of the motor 13, the vibration hammer 9 in the eccentric position continuously strikes the central tube 3-1, and the blade cover 3-2 connected to it transmits the vibration to the four frame paddles Leaf 3-3 and the surrounding concrete obtained concrete under different vibration frequencies.

[0036] Preferably, as figure 1 As shown, the hammerhe...

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Abstract

The invention provides a fresh concrete gas content detection device under vibration and temperature variation conditions, belongs to the technical field of construction material detection equipment, and aims to accurately measure the gas content of fresh concrete. An upper semi-cylindrical container and a lower semi-cylindrical container are in detachable sealed connection; a water level indicator is connected with the upper port of the upper semi-cylindrical container; a thermometer I and a stirring paddle are respectively arranged in the upper and lower semi-cylindrical containers; the lower semi-cylindrical container is fixed in a tank body, and forms an annular tank with the tank body; a thermometer II and an electric heater are arranged in the annular tank; a center tube of the stirring paddle is arranged in a coupler; the coupler is connected with a motor output shaft; the head of a vibration hammer is arranged in the center tube of the stirring paddle, and the handle of the vibration hammer is arranged in the coupler; the coupler and the handle of the vibration hammer are connected or separated by means of plugging in or drawing out a pin I; and the coupler and the center tube of the stirring paddle are separated or connected by means of drawing out or plugging in a pin II. The device is used for detecting the gas content of fresh concrete under vibration and temperature variation conditions.

Description

technical field [0001] The invention relates to a device for measuring the air content of freshly mixed concrete, which belongs to the technical field of building material testing equipment. Background technique [0002] The air content of fresh concrete is an important indicator of concrete performance testing. Especially in cold regions, the air content of concrete is closely related to its frost resistance. So far, there are mainly the following methods to measure the air content in concrete: gravimetric method, volume method, pressure method and AVA (Air Void Analyzer) method. The gravimetric method is the oldest and simplest method, which is to compare the density of concrete containing air with the calculated density of concrete without air. This method is not suitable for field use, because the exact value of the density of each component in the concrete needs to be known. , and the density of concrete raw materials fluctuates greatly in the construction site. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/00
Inventor 张守杰张恒李向东刘晓波马耀辉熊复慧
Owner 黑龙江省翔波新材料新技术应用开发有限公司
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