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Preparation method of novel cement-based plant straw fiber particle wall material

A technology of plant straw and wall materials, which is applied in the field of building materials, can solve the problems of failure to meet the requirements of load-bearing walls and low compressive strength, achieve excellent sound insulation performance and effect, improve thermal insulation performance, and improve calculation Effects of weighted sound insulation and spectrum correction

Inactive Publication Date: 2015-08-05
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above literature, the wall blocks are prepared by using plant straw fibers, but their compressive strength is low, which cannot meet the requirements of load-bearing wall applications.

Method used

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  • Preparation method of novel cement-based plant straw fiber particle wall material
  • Preparation method of novel cement-based plant straw fiber particle wall material
  • Preparation method of novel cement-based plant straw fiber particle wall material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1. Cut the dried wheat straw fibers into small sections of 3 to 5 mm, then soak them in 3% sodium hydroxide solution for 5 hours for surface modification treatment, and then dry them in the air; The fan and the crushing host suck the dried wheat straw fibers into the grinder from the feed port, and control the frequency of the crushing host to 10Hz, the frequency of the induced draft fan to 20Hz, and the frequency of the classifier to 25Hz; stop feeding after 5 minutes of continuous feeding, and Continue to pulverize for 5 minutes to obtain wheat straw fiber particles;

[0036] Step 2, using a 20 mesh / mesh square hole sieve to sieve the wheat straw fiber particles obtained in step 1 to obtain wheat straw fiber particles with a particle size of 20 mesh;

[0037] Step 3: Take 100 parts of 32.5R grade ordinary Portland cement, 40 parts of fly ash, 10 parts of fine sand, 5 parts of 20-mesh wheat straw fiber particles, and 30 parts of water according to the weight perce...

Embodiment 2

[0039] Step 1: Cut the dried wheat straw fibers into small sections of 3 to 5 mm, then soak them in 5% sodium hydroxide solution for 10 hours for surface modification treatment, and then dry them in the air; open the classifier of the straw crusher, Fan and crushing host, suck the dried wheat straw fibers into the pulverizer from the feed port, and control the frequency of the crushing host to 20Hz, the frequency of the induced draft fan to 40Hz, and the frequency of the classifier to 35Hz; stop feeding after 8 minutes of continuous feeding, and Continue to pulverize for 10 minutes to obtain wheat straw fiber particles;

[0040] Step 2, using a square hole sieve of 80 mesh / mesh to sieve the wheat straw fiber particles obtained in step 1 to obtain wheat straw fiber particles with a particle size of 80 mesh;

[0041] Step 3: Take 100 parts of 42.5 grade ordinary Portland cement, 50 parts of fly ash, 30 parts of fine sand, 15 parts of 80-mesh wheat straw fiber particles, and 40 p...

Embodiment 3

[0043] Step 1. Cut the dried corn stalk fibers into small sections of 3 to 5 mm, then soak them in 4% potassium hydroxide solution for 8 hours for surface modification treatment, and then dry them in the air; Fan and crushing host, suck the dried corn stalk fiber into the grinder from the feed port, and control the frequency of the crushing host to 15Hz, the frequency of the induced draft fan to 25Hz, and the frequency of the classifier to 30Hz; stop feeding after 8 minutes of continuous feeding, and Continue to pulverize for 8 minutes to obtain corn stalk fiber particles;

[0044] Step 2, using a 60 mesh / mesh square hole sieve to sieve the corn stalk fiber particles obtained in step 1 to obtain corn stalk fiber particles with a particle size of 60 mesh;

[0045] Step 3: Take 100 parts of 32.5R grade ordinary Portland cement, 48 parts of fly ash, 25 parts of fine sand, 10 parts of 60-mesh corn stalk fiber particles, and 35 parts of water according to the weight percentage, ful...

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Abstract

The invention discloses a preparation method of a novel cement-based plant straw fiber particle wall material. The preparation method comprises cutting dried plant straw fibers into small pieces, immersing the small pieces in an alkali solution, carrying out air drying, sucking the air-dried plant straw fibers into a crusher from a feeing inlet for continuous 5-8min, carrying out crushing for 5-10min to obtain plant straw fiber particles, screening the plant straw fiber particles by a square hole sieve to obtain the plant straw fiber particles with appropriate particle sizes, mixing cement, fly ash, fine sand, the plant straw fiber particles and water to obtain a uniform mixture, pouring the mixture into a mold, carrying out demolding after coagulation, putting the molded test piece into a standard maintenance chamber, and carrying out maintenance to obtain the novel cement-based plant straw fiber particle wall material. The prepared wall has the bright and clean surface, is free of secondary treatment, effectively reduces wall treatment difficulty and processes, and has excellent heat insulation performances, good toughness, impact resistance and excellent sound insulation performances.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a preparation method of a novel cement-based plant straw fiber particle wall material. Background technique [0002] Cement-based plant straw fiber particle wall material is a kind of plant fiber that uses straw and other plant fibers as raw materials, and adds a certain proportion of plant fiber particles such as straw to the raw materials before cement molding to form plant fiber-mixed cement blocks and plates. This material will be more widely used because of its lighter weight, more heat preservation, soil saving, economical and many other advantages. Moreover, its production process is energy-saving, land-saving, beneficial to environmental protection, and meets the requirements of green wall materials. [0003] The main function of fibers added to concrete is to inhibit and stabilize the development of micro-cracks, which is the direction of efforts ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/24C04B18/08C04B14/06
CPCY02W30/91
Inventor 陈国平朱水文朱国权马立苏有文
Owner SOUTHWEAT UNIV OF SCI & TECH
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