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Novel concrete construction vibration parameter rapid measuring device and method

A technology for rapid measurement and concrete application in measuring devices, processing of building materials, construction, etc. It can solve problems such as surface appearance quality of vibrator traces, segregation of concrete mixture, complex and changeable performance, etc., to achieve optimal pouring and Effect of vibrating process, reducing urban noise, and simple operation

Active Publication Date: 2022-02-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this can lead to some side effects such as engineering problems such as vibrator marks in the formed structure or poor surface appearance quality
[0005] In summary, various auxiliary cementitious materials and admixtures are used in existing concrete, and their properties are complex and changeable. However, the vibration parameters of the concrete mixture during the construction process are mainly based on long-term engineering experience, which is prone to overvibration and leakage. Vibration, which in turn leads to a series of construction quality problems such as segregation of the concrete mixture, bleeding, and cracks or holes in the formed structure.

Method used

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  • Novel concrete construction vibration parameter rapid measuring device and method
  • Novel concrete construction vibration parameter rapid measuring device and method
  • Novel concrete construction vibration parameter rapid measuring device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] A new type of rapid measuring device for concrete construction vibration parameters, such as Figure 1-3 As shown, including a closed container 1 without a cover, a vibrator 6 and a data acquisition and analysis system;

[0067] A baffle 2 is arranged in the airtight container 1, and the baffle 2 is welded with the airtight container 1. The baffle 1 divides the inner space of the airtight container into two parts, namely the empty chamber A5 and the empty chamber B 7, and the empty chamber B 7 is filled with concrete. The tamping rod 6 is located in the middle of the airtight container and in the empty bin B 7, and is used for vibrating concrete;

[0068] The data acquisition and analysis system includes interconnected data processing centers and acquisition sensors. The main body of the acquisition sensor is placed in the empty warehouse A5 and its sensing end is in contact with the concrete. The internal concrete is in direct contact, and the main body is placed in t...

Embodiment 2

[0070] A new type of rapid measuring device for vibration parameters of concrete construction, as described in Example 1, the difference is that the baffle 2 is composed of a rectangular baffle and a spiral baffle, and one side of the rectangular baffle and the spiral baffle connected, the height of the baffle plate 2 is the same as that of the airtight container 1, and the baffle plate 2 is vertically fixed in the airtight container;

[0071] The side facing away from the spiral baffle forms an empty chamber A, and the side facing the spiral baffle forms an empty chamber B, and the volume of the empty chamber B 7 is larger than that of the empty chamber A 5 .

Embodiment 3

[0073] A new device for quickly measuring vibration parameters in concrete construction, as described in Example 2, the difference is that the acquisition sensor includes an energy acquisition sensor 4 and a lateral pressure acquisition sensor 3, and the energy acquisition sensor 4 is arranged at the height of the spiral baffle In the middle position, and a plurality of them are arranged in the same horizontal plane, the distances between the multiple energy harvesting sensors and the center of the vibrator 6 increase sequentially, and the increment Δ is the same;

[0074] One side of each energy harvesting sensor is provided with a group of lateral pressure collecting sensors, and each group of lateral pressure collecting sensors includes a plurality of lateral pressure collecting sensors, which are evenly distributed along the height direction of the spiral baffle.

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Abstract

The invention relates to a novel concrete construction vibration parameter rapid measuring device and method, and belongs to the technical field of concrete construction. The novel concrete construction vibration parameter rapid measuring device comprises an uncovered closed container, a vibration rod and a data acquisition and analysis system; a baffle is arranged in the closed container and divides the inner space of the closed container into an empty bin A and an empty bin B, and the vibrating rod is located in the middle of the closed container and located in the empty bin B; the data acquisition and analysis system comprises a data processing center and an acquisition sensor which are connected with each other, and the acquisition sensor is used for acquiring energy at different distances from the vibrating rod and lateral pressure of concrete on the baffle. Through a simple field test, the vibration parameters of the given concrete mixture in the construction process can be scientifically and rapidly determined, the vibration parameters comprise the concrete pouring thickness, the vibration time and the maximum working radius, the concrete pouring and vibration technology is reasonably optimized, vibration energy waste is reduced, urban noise caused by vibration is reduced, the construction speed is increased, and the engineering quality and the service life are improved.

Description

technical field [0001] The invention relates to a novel device and method for quickly measuring vibration parameters of concrete construction, belonging to the technical field of concrete construction. Background technique [0002] Concrete is the most widely produced and widely used building material in modern times. The annual output of commercial concrete in my country exceeds 3 billion cubic meters. Cement concrete is a typical thixotropic material. Usually, it needs to be vibrated during the construction process to make it flow near obstacles such as steel bars and mold corners, so that it can be more fully filled in the structure. Another function of vibration is to remove trapped air within the material without compromising the mechanics and durability of the concrete. The vibration during the concrete construction process should not cause segregation or bleeding. Excessive vibration or missing vibration will cause gaps or holes on the surface of the concrete structu...

Claims

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Application Information

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IPC IPC(8): G01D21/02E04G21/08
CPCG01D21/02E04G21/08
Inventor 凌一峰王丽君房泽志袁化强孙仁娟郭磊张洪智葛智管延华陈传松
Owner SHANDONG UNIV
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