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Method for accurately and quickly detecting water absorption capacity of plant fibers

A technology of plant fiber and water absorption capacity, which is applied in the field of accurate and rapid detection of the water absorption capacity of plant fibers, can solve problems such as reducing the strength of cement stone and increasing the risk of bleeding, and achieves the effect of accurate evaluation

Inactive Publication Date: 2020-06-30
CHANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased water-cement ratio will reduce the strength of cement stone and increase the risk of bleeding

Method used

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  • Method for accurately and quickly detecting water absorption capacity of plant fibers
  • Method for accurately and quickly detecting water absorption capacity of plant fibers
  • Method for accurately and quickly detecting water absorption capacity of plant fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for accurately and quickly detecting the water-absorbing capacity of plant fibers, comprising the steps of:

[0027] S1, immerse the shredded sisal fiber in water for 24 hours, and absorb water to reach saturation;

[0028] S2, after the sisal fiber is pulled out, the sisal fiber is centrifuged several times to remove free water: the sisal is wrapped with gauze, placed in a 50mL centrifuge tube, and the edge of the gauze is fixed with the lid of the centrifuge tube tighten, such as figure 1 As shown; centrifuge at 4000rpm for 10min, pour off the free water centrifuged in the centrifuge tube; then centrifuge at 6000rpm for 10min, pour off the free water centrifuged again in the centrifuge tube; then centrifuge at 8000rpm for 10min, pour off Remove the free water centrifuged again in the centrifuge tube; then centrifuge at 8000rpm for 2 minutes, no new free water will be produced in the centrifuge tube, and end the centrifugation;

[0029] S3, weighing the qual...

Embodiment 2

[0037] A method for accurately and quickly detecting the water-absorbing capacity of plant fibers, comprising the steps of:

[0038] S1, immerse the shredded coconut shell fiber in water for 24 hours, and absorb water to reach saturation;

[0039] S2, after the coconut shell fiber is pulled out, the coconut shell fiber is centrifuged several times to remove free water: the coconut shell is wrapped with gauze, placed in a 50mL centrifuge tube, and the edge of the gauze is fixed with the cover of the centrifuge tube tighten, such as figure 1 As shown; centrifuge at 4000rpm for 10min, pour off the free water centrifuged in the centrifuge tube; then centrifuge at 6000rpm for 10min, pour off the free water centrifuged again in the centrifuge tube; centrifuge at 8000rpm for 2min, centrifuge No new free water is produced in the tube, and the centrifugation ends;

[0040] S3, weighing the quality of the coconut shell fiber after multiple centrifugation in S2 is 4.75g, denoted as m ...

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Abstract

The invention relates to a method for accurately and quickly detecting the water absorption capacity of plant fibers. The method comprises the following steps: S1, immersing the plant fibers into water for water absorption saturation; s2, after the plant fibers are fished out, centrifuging the plant fibers multiple times to remove free water; s3, weighing the mass of the plant fibers centrifuged in the step S2 for multiple times, and recording the mass as mA; s4, drying the plant fibers in the S3 until the mass is constant, and recording the mass as mB; s5, calculating the water absorption capacity of the plant fibers; according to the invention, centrifugal force is adopted to remove free water after plant fibers absorb water and are saturated, so that the free water and physically adsorbed water can be accurately and effectively separated; according to the method, the water absorption capacity of the plant fibers can be simply, quickly and accurately evaluated only by a small amountof plant fiber samples.

Description

technical field [0001] The invention relates to the technical field of performance detection of building materials, in particular to a method for accurately and quickly detecting the water absorption capacity of plant fibers. Background technique [0002] Cement-based materials are currently the most used building materials in the world, but they are brittle and easy to crack. Studies have shown that fibers have a good control effect on the cracking of cement-based materials. Steel fibers and synthetic fibers can improve the toughness of concrete to a certain extent, but increase the cost of concrete. Plant fibers come from a wide range of sources, are cheap, are environmentally friendly, and have mechanical properties comparable to synthetic fibers, and can be used to replace chemical synthetic fibers and mineral fibers to toughen cement-based materials. In addition, the unique porous structure and hydrophilic properties of plant fibers enable it to store a large amount o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 赵丽杜鑫周伟冬张星池陶青青刘辰一
Owner CHANGZHOU INST OF TECH
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