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Preparation method of protein type cement foaming agent and concrete containing the same

A technology of cement foaming agent and protein, which is applied in the field of preparation of protein-based cement foaming agent, can solve problems such as pollution of leather chips, and achieve the effects of solving high cost, high foam stability and improving compressive strength.

Active Publication Date: 2016-09-21
王全杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a protein-type cement foaming agent and a method for preparing concrete containing the foaming agent, make full use of leather shavings to prepare foaming agents and concrete with high value, and solve the problem of leather shavings pollution question

Method used

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  • Preparation method of protein type cement foaming agent and concrete containing the same
  • Preparation method of protein type cement foaming agent and concrete containing the same
  • Preparation method of protein type cement foaming agent and concrete containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Preparation example of protein type cement foaming agent.

[0032] Add 40g of dried leather shavings, 320ml of tap water, 3.2g of calcium hydroxide, and 8g of sodium dihydroxynaphthalene-6-sulfonate into a three-necked flask, stir and hydrolyze at 80°C, and reflux for 10h. After the hydrolysis is completed, the gauze is sucked and centrifuged to obtain a hydrolyzed solution and a hydrolyzed residue of chromium-containing leather scraps.

[0033] Take 300ml of the hydrolyzate and add it to the beaker, keep the pH of the solution at this time between 6.5-7.5 by adding acid, and add 0.3g of preservative sodium azide. Add 0.36g sodium lauryl sulfate, 0.36g sodium lauryl alcohol ether sulfate, 0.36g hydroxyethyl cellulose and methyl triethoxysilane 0.1g successively to the hydrolyzate, mix well to obtain hair Foam agent mother liquor.

Embodiment 2

[0034] Embodiment 2: Preparation example 1 of foam concrete.

[0035] Preparation steps: Add cement, tap water, bentonite and air-entraining water reducer to the protein-type cement foaming agent prepared in Example 1; stir to form a uniform slurry, pour the slurry into a mold for curing, and obtain concrete. The formula is shown in Table 1. The properties of foamed concrete were determined by taking absolute dry density, water absorption and compressive strength as the investigation indexes.

[0036] Table 1 foam concrete formula

[0037]

Embodiment 3

[0038] Embodiment 3: Preparation example 2 of foam concrete.

[0039] Add cement, tap water, chromium-containing leather shavings hydrolysis residue, bentonite and air-entraining water reducer to the protein-type cement foaming agent prepared in Example 1, stir to form a uniform slurry, pour the slurry into a mold for curing, and obtain concrete . The formula is shown in Table 2.

[0040] Table 2 foam concrete formula

[0041]

[0042] The amount of chromium-containing leather shavings hydrolyzed residue was adjusted within the range of 20-100g to prepare foamed concrete, and the properties of the foamed concrete were measured with absolute dry density, water absorption and compressive strength as the investigation indexes.

[0043] The following is the performance test of foam concrete:

[0044] (1) Determination of the absolute dry density of foam concrete.

[0045] According to the "JCT 2125-2012 Foam Concrete for Roof Thermal Insulation" standard of the building mat...

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Abstract

The invention relates to a preparation method of a protein type cement foaming agent and concrete containing the foaming agent. The method includes: hydrolyzing chrome-containing leather shavings to obtain a leather shaving hydrolysate solution, and then subjecting the leather shaving hydrolysate solution to blistering compounding and foam-stabilizing compounding to obtain the protein type foaming agent, thus solving the high cost problem of protein type foaming agents; and applying the protein type foaming agent into cement to prepare foam concrete, drying the chrome-containing residue obtained by hydrolysis, and then adding the dried residue into the foam concrete. The invention provides a novel treatment approach for chrome-containing residue, and obtains a new formula for making foam concrete. The method provided by the invention utilizes leather shavings to prepare the foaming agent and concrete with high utility value, and also solves the pollution problem of leather shavings.

Description

technical field [0001] The invention relates to a preparation method of protein cement foaming agent, and also relates to a preparation method of concrete containing the foaming agent. Background technique [0002] As the world's largest tannery country, my country's annual output of solid waste is as high as 1.4 million tons, of which chromium-containing solid waste is as high as 280,000 tons. But still there is not a kind of chromium-containing leather shavings treatment method that can both consume chromium-containing leather shavings in large quantities and prevent secondary pollution in the prior art. [0003] With the development of the building materials industry, cement foaming agents are gradually developing from a single component to a multi-component compound. Cement foaming agents can be divided into surfactant foaming agents, synthetic foaming agents, protein foaming agents and composite foaming agents. At present, the cement foaming agent with the best perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/20
CPCC04B18/20C04B28/04C04B40/0039C04B2201/20C04B2201/50C04B22/002C04B22/064C04B24/20C04B14/325C04B24/16C04B24/383C04B24/42C04B14/104C04B2103/302C04B2103/0068C04B18/04Y02W30/91
Inventor 张萌萌张文斌段宝荣刁屾罗艳华陈沛海韩静周春莉邱李树石
Owner 王全杰
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