Modification method of rubber particles and application thereof in preparing natural pumecrete

A technology of rubber particles and concrete, applied in the field of building materials, can solve problems such as reducing the compressive strength of concrete, and achieve the effects of improved compressive strength, good mechanical properties and low price

Inactive Publication Date: 2018-01-09
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a modification method of rubber particles and its application in the preparation of natural pumice concrete, which solves the problem in the prior art that the use of rubber to prepare concrete will reduce the compressive strength of concrete

Method used

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  • Modification method of rubber particles and application thereof in preparing natural pumecrete
  • Modification method of rubber particles and application thereof in preparing natural pumecrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for modifying rubber particles, specifically implemented according to the following steps:

[0030] Step 1, prepare a modified solution by mixing Span 40 with a mass concentration of 1% and water at 100°C in a mass ratio of 1:10;

[0031] Step 2, immerse the rubber particles with a particle size of 80 mesh into the modified solution prepared in step 1, and stir at a speed of 30r / min for 120min, after the stirring is completed, let stand for 3h, and filter after standing to obtain wet modified rubber Particles, the wet modified rubber particles are naturally dried and sieved to obtain the modified rubber particles, and the modified rubber particles are sealed and stored for future use.

[0032] The modified rubber particles prepared above are used to prepare natural pumice concrete, specifically according to the following steps:

[0033] Step 1, weighing 3500 parts of cement, 700 parts of river sand, 550 parts of natural pumice, 150 parts of water, 7 parts of w...

Embodiment 2

[0039] A method for modifying rubber particles, specifically implemented according to the following steps:

[0040] Step 1, prepare a modified solution by mixing Span 40 with a mass concentration of 1% and water at 100°C in a mass ratio of 1:10;

[0041] Step 2, immerse the rubber particles with a particle size of 80 mesh into the modified solution prepared in step 1, and stir at a speed of 30r / min for 100min, after the stirring is completed, let stand for 4 hours, and filter after standing to obtain wet modified rubber Particles, the wet modified rubber particles are naturally dried and sieved to obtain the modified rubber particles, and the modified rubber particles are sealed and stored for future use.

[0042] The modified rubber particles prepared above are used to prepare natural pumice concrete, specifically according to the following steps:

[0043] Step 1, weighing 370 parts of cement, 720 parts of river sand, 570 parts of natural pumice, 160 parts of water, 7.4 part...

Embodiment 3

[0049] A method for modifying rubber particles, specifically implemented according to the following steps:

[0050] Step 1, prepare a modified solution by mixing Span 40 with a mass concentration of 1% and water at 100°C in a mass ratio of 1:10;

[0051] Step 2, immerse the rubber particles with a particle size of 100 mesh into the modified solution prepared in step 1, and stir at a speed of 30r / min for 80min, after stirring, let stand for 5h, and filter after standing, to obtain wet modified rubber Particles, the wet modified rubber particles are naturally dried and sieved to obtain the modified rubber particles, and the modified rubber particles are sealed and stored for future use.

[0052] The modified rubber particles prepared above are used to prepare natural pumice concrete, specifically according to the following steps:

[0053] Step 1, weighing 400 parts of cement, 750 parts of river sand, 600 parts of natural pumice, 180 parts of water, 7.5 parts of water reducing a...

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Abstract

The invention discloses a modification method of rubber particles. The method specifically comprises the following steps: preparing a modification solution by mixing 1% by mass of span-40 and water at100 DEG C in a mass ratio of 1: 10; and immersing the rubber particles into the modification solution prepared in the step 1, stirring the mixture for 120min at a rate of 30r/min, leaving the mixtureto stand for 3-5h, after leaving the mixture to stand, filtering the mixture to obtain wet modified rubber particles, and naturally airing and screening the wet modified rubber particles to obtain the modified rubber particles. In addition, the invention also provides a method of preparing natural pumecrete by using the modified rubber particles. The rubber particles which are modified are used for preparing natural pumecrete. The compressive strength of the prepared modified rubber natural pumecrete is improved obviously, the porosity is reduced obviously, and the prepared modified rubber natural pumecrete has a very good mechanical property. Moreover, by taking the natural pumecrete which is wide in source and low in price as a raw material, the modification method has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for modifying rubber particles and its application in the preparation of natural pumice concrete. Background technique [0002] With the development of the domestic transportation industry and the increase in the number of vehicles, the amount of waste tires is also increasing year by year. Nearly 1 billion waste tires are produced in the world every year, and it is expected to reach 1.2 billion in 2030. The recycling of waste tires has become a global problem. In many countries, direct burial and incineration of waste tires is a relatively common treatment method, but it will pose a serious threat to the ecological environment. Therefore, effective recycling of waste tires is an important issue that needs to be solved urgently to save energy and protect the environment. [0003] Several methods have been proposed at home and abroad to recycle was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/02C04B28/04
Inventor 王海龙张克王磊白岩
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
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