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Pervious template cloth permeability test method and device based on concrete slurry medium

A technology for permeable formwork cloth and concrete slurry, which is used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc.

Inactive Publication Date: 2009-04-29
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of the existing technology that the water permeability test method cannot characterize its actual seepage and drainage performance, the present invention provides a permeable template cloth permeability test method and its device based on the concrete slurry medium, which can truly reflect the actual construction status Permeability of permeable template cloth under

Method used

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  • Pervious template cloth permeability test method and device based on concrete slurry medium
  • Pervious template cloth permeability test method and device based on concrete slurry medium
  • Pervious template cloth permeability test method and device based on concrete slurry medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] To test a brand of permeable formwork cloth, the mix ratio of the test concrete configured is as follows: cement: sand: stone: water: fly ash: JM-9 water reducing agent = 1:1.44:2.45:0.486:0.204:0.006; The lateral pressure applied to the sample is 4Kpa; the sample area is 30mm×0.113mm=3.39cm 2 ; Then the following data table 1 can be tested:

[0037] Table 1: Statistics of sample seepage discharge (Q) in each unit period of actual measurement

[0038] Serial number of continuous test time period 1 2 3 4 5 6 7 8 9 Infiltration water volume per unit period (ml) 41.28 32.58 19.02 16.32 13.02 7.38 5.94 4.98 3.66 Serial number of continuous test time period 10 11 12 13 14 15 16 17 18 Infiltration water volume per unit period (ml) 2.58 2.28 1.86 1.44 0.9 0.66 0.42 0.12 0.06

[0039] Note: The period of each test unit is 5 minutes, and the cumulative continuous test is 18*5=90 minutes.

[0040] Calculate accord...

Embodiment 2

[0061] A device used in the permeable template cloth permeability test method based on concrete slurry medium, the device includes a pressurizing device, a counterforce support 7, a guide rod 8, a guide rail 9, a pressure plate 10 and a base plate 11. The reaction force support 7 is arranged vertically on the left and right sides of the base plate 11 respectively. On the base plate 1, a water collection tank 15 is provided on the inner side of the left reaction force support 7, and a pressure plate 10 is provided on the inner side of the right reaction force support. The base plate 11 is provided with a guide rail 9, the pressurizing device is located between the pressurizing plate 10 and the right reaction force support 7, the pressurizing plate 10 is connected with the right reaction force support 7 through the guide rod 8, and the pressurizing plate 10 passes through the guide The rod 8 moves horizontally between the counter force brackets 7 along the guide rail 9 arranged o...

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Abstract

The invention discloses a penetrability test method and a penetrability test device for an infiltrating formwork texture based on concrete grout medium. The method comprises the following steps: step one, cement mortar is prepared according to the mixing proportion of concrete construction, and is filled after stone coarse aggregate is removed, and the intact penetration side surface is applied with a saturated infiltrating formwork texture to be tested; step two, a horizontal load is exerted on a test sample, side pressures of concrete grouts at different positions in actual formwork engineering are simulated, steady pressure values are maintained, and the average water penetration and discharge amount and the average unit penetration and discharge rate of each corresponding timing unit are calculated; step three, test data are arranged to obtain an experimental expression of a comprehensive time-varying penetration coefficient; step four and step five, the mixing proportion of the test sample is changed or the side pressure values are adjusted to obtain experimental expressions of the comprehensive time-varying penetration coefficient under corresponding conditions; step six, the change rate psi of the comprehensive time-varying penetration coefficient is obtained; and step seven, the clogging degrees of the test sample, namely the saturated infiltrating formwork texture before and after the experiment are tested.

Description

1. Technical field: [0001] The invention belongs to the field of testing the permeability of porous medium materials, in particular to a method for testing the permeability of a permeable template cloth based on a concrete slurry medium. 2. Background technology: [0002] The permeable template cloth is a short-fiber non-woven non-woven fabric, which is used to line the template surface when pouring concrete, to seep and drain the excess water and gas in the shallow layer of concrete slurry, and reduce the water-cement ratio of shallow concrete slurry and Air bubble content, while improving the concrete curing conditions, thereby improving the compactness and apparent performance of the concrete surface. [0003] Permeability is one of the important contents of performance testing of porous media materials. For short-fiber non-woven non-woven fabrics, the application in civil and water conservancy projects is mainly to exert its anti-filtration and drainage functions. At pr...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 田正宏顾冲时武良金刘兆磊王晓孟思宇王会许敏钟
Owner HOHAI UNIV
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