Mould and method for preparing permeable concrete permeation coefficient measuring sample

A technology of permeable concrete and water permeability coefficient, which is applied in the preparation of test samples, sampling, measuring devices, etc., which can solve the problems of sample preparation, difficult loading of samples, deviation of sample diameter, etc., and achieve simple and efficient preparation process , Disassembly and cleaning are simple, and the effect of shortening the time span

Pending Publication Date: 2019-01-01
广西建设职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using the Permeable Cement Concrete Pavement Water Permeability Tester for testing, often due to poor sample preparation, the test water leaks from the side of the sample, thus affecting the test accuracy of the water permeability coefficient
It often happens that the diameter of the sample prepared by the core drilling method is deviated, which makes it difficult to load the sample into the permeable cement concrete pavement water permeability test device.
Moreover, it is generally necessary to wait for the permeable cement concrete to fully harden before sampling when the core drilling method is used to prepare the sample, and it takes a long time (generally after 28 days) to test the water permeability coefficient of the permeable cement concrete pavement
When carrying out the mix ratio test in the laboratory, the sample cannot be prepared by the core drilling method at the same time
The existing laboratory permeable concrete test sample preparation mold can only prepare permeable concrete specimens with a single road layer and the same mix ratio, and cannot form combined permeable concrete with 2 or more layers of different road layers and different mix ratios. Test specimen

Method used

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  • Mould and method for preparing permeable concrete permeation coefficient measuring sample
  • Mould and method for preparing permeable concrete permeation coefficient measuring sample
  • Mould and method for preparing permeable concrete permeation coefficient measuring sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, a single-layer mold used to prepare laboratory permeable concrete water permeability coefficient test samples, including side mold 2, bottom mold 1 and fasteners, the side mold is a ring structure, in the ring structure The side of the side mold is provided with a slit 4 along its axial direction; the inner layer of the side mold is provided with a layer of rubber skin 4, and the side of the rubber skin is also provided with a slit 7 along its axial direction; The side mold is clamped on the bottom mold to close the bottom of the side mold; the fastener is clamped on the outer ring of the side mold to fasten the side mold.

[0041] The effect of setting the slit on the rubber cortex and the side form is mainly for the rubber cortex and the side form to loosen automatically when the form is removed, without using additional devices to disassemble.

[0042] use as Figure 4 The structure of the ring fastener 3 shown is directly slightly larger...

Embodiment 2

[0053] Such as Figure 6 and Figure 7 As shown, the present invention also provides an embodiment, which is a two-layer mold for preparing a laboratory pervious concrete sample, including two side molds, a bottom mold and two fasteners, and the side mold is a The ring structure has a gap along its axial direction on the side of the ring structure; a layer of rubber skin is arranged on the inner layer of the side mold, and a gap is also provided on the side of the rubber skin along its axis direction; the side The mold is stuck on the bottom mold to close the bottom of the side mold; the fastener is stuck on the outer ring of the side mold to fasten the side mold; the ring fastener fastens the upper part of the lower mold and the side of the upper mold the lower part.

[0054] One of the fasteners is used as Figure 4 The structure of the ring fastener 3 shown, another fastener adopts such as Figure 6 The structure of the ring fastener 6 shown, the difference between the ...

Embodiment 3

[0063] If it is necessary to make a three-layer sample, select the corresponding number of mold layers and combine them according to the actual situation of the tested permeable concrete pavement. The specific method is to remove the ring fastener 3 on the upper end of the test mold of the second layer of permeable concrete water permeability coefficient measurement specimen, and then install a side of the mold, and connect the second layer and the third layer by the ring fastener 6. The side of the mold is fastened, (1 side of the mold is 1 layer, and 1 ring fastener is required; 2 sides of the mold are 2 layers, and 2 ring fasteners are required; 3 sides of the mold are 3 layers, and 3 ring fasteners are required ;). Then put the third layer of rubber leather into a ring shape, put the rubber leather close to the side (3 mold sides are 3 layers, choose 3 rubber leather, total width 150mm), and then, the third layer of side mold The top is fastened by a ring fastener 3; a la...

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Abstract

The invention discloses a mould and a method for preparing a permeable concrete permeation coefficient measuring sample. The mould comprises a side die, a bottom die and a fastener. The side die is anannular structure. The side part of the annular structure is provided with a gap along an axis direction thereof. An inner layer of the side die is provided with a layer of a rubber skin layer. The side part of the rubber skin layer is also provided with a gap along the axis direction thereof. The side die is locked on the bottom die, so the bottom of the side die is closed. The fastener is locked on an outer circle of the side die and used for fastening the side die.

Description

technical field [0001] The invention belongs to the field of mechanical moulds, and in particular relates to a mold and a method for preparing samples for testing the permeability coefficient of permeable concrete in a laboratory. Background technique [0002] Permeable concrete, also known as porous concrete, is a kind of porous honeycomb lightweight concrete mixed with specific graded coarse aggregate, cement, water, admixtures and admixtures. Coating on the surface realizes the mutual bonding between the coarse aggregate particles and forms a structure with uniform distribution of pores. Permeable concrete brick is a new century environmental protection building material product that was born to solve the hardening of the urban surface, create a high-quality natural living environment, and maintain the urban ecological balance. Weather resistance, noise reduction, sound absorption and other characteristics. [0003] CJJ / T135-2009 "Technical Regulations for Permeable Cem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/36
CPCG01N1/286G01N1/36G01N2001/366
Inventor 付希尧吴丹谢雄敏李波林
Owner 广西建设职业技术学院
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