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Activation strengthening agent applied to cement with high-volume limestone

A limestone and reinforcing agent technology, applied in the field of cement additives, can solve the problem of high cost and achieve the effects of low cost, compact cement structure and improved compressive strength

Active Publication Date: 2014-07-02
SHANDONG HONGYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it uses a large amount of alcohol amines and acrylic substances, and the cost is relatively high

Method used

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  • Activation strengthening agent applied to cement with high-volume limestone
  • Activation strengthening agent applied to cement with high-volume limestone
  • Activation strengthening agent applied to cement with high-volume limestone

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The preparation method of described herbal lignin-based polyol is:

[0035] Mix polyols with polyethylene glycol to obtain mixed alcohols;

[0036] reacting the mixed alcohol, herb fermentation waste residue and concentrated sulfuric acid to obtain a mixed liquor;

[0037] Adjust the pH value of the mixed solution to neutral to obtain herbal plant lignin-based polyols; the herbal plant fermentation waste residue is composed of 60wt%~70wt% lignin, 15wt%~25wt% cellulose, 2wt%~5wt% protein, 3wt%~5wt% ash, and the rest water.

[0038] According to the present invention, the activation enhancer applied to the limestone cement with large volume includes alcohol amines, herbaceous lignin-based polyols, aluminum salts, iron salts and water.

[0039] The alcohol amines are preferably one or both of triethanolamine and triisopropanolamine. The content of the alcohol amines is 5wt%~8wt%, preferably 6wt%~7wt%. The invention reduces the content of alcohol amine substances and re...

Embodiment 1

[0053] The herbaceous plant fermentation waste residue used in this example is the residue left after corn stalks are fermented to produce ethanol, consisting of 65wt% lignin, 20wt% cellulose, 3wt% protein, 3.5wt% ash, and the rest of water .

[0054] Add 300kg of polyethylene glycol 200, 300kg of ethylene glycol, and 300kg of glycerin into the reactor, stir, and mix evenly, then add 200kg of herbal plant fermentation waste residue, 16.5kg of concentrated sulfuric acid, stir, and heat to 125°C for 5 hours. Cool down to room temperature, adjust the system to neutrality with 40% sodium hydroxide solution, and obtain the herbaceous plant lignin polyol. Add 600kg of triethanolamine, 1500kg of aluminum chloride, 800kg of ferric nitrate, and 5900kg of water in sequence to obtain an activation enhancer for large-volume limestone cement.

[0055] 8kg of the obtained activation enhancer, 56kg of clinker, 4kg of gypsum, 20kg of limestone and 20kg of slag were mixed and ground for 31 mi...

Embodiment 2

[0057] The herb fermentation waste residue used in this example is the residue left after corn stalks are fermented to produce ethanol, consisting of 65wt% lignin, 22wt% cellulose, 4wt% protein, 4% ash, and the rest water.

[0058] Add 300kg of polyethylene glycol 200, 300kg of diethylene glycol, and 300kg of glycerin into the reaction kettle, stir, mix evenly, then add 200kg of herbal plant fermentation waste residue, 16.5kg of concentrated sulfuric acid, stir, and heat to 125°C for reaction 5 Hours, down to room temperature, adjust the system to neutral with ammonia solution to obtain herbaceous plant lignin polyols. Then add 600kg of triisopropanolamine, 1500kg of aluminum sulfate, 800kg of ferric chloride, and 5900kg of water in sequence to obtain an activation enhancer for limestone cement with a large dosage.

[0059] 8kg of the obtained activation enhancer, 56kg of clinker, 4kg of gypsum, 20kg of limestone and 20kg of slag were mixed and ground for 31 minutes to obtain ...

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Abstract

An activation intensifier applied to cement mixed with a large amount of limestone, comprising: 5-8% by weight of alcohol amine substance, 10-15% by weight of herbal lignin based polyhydric alcohol, 10-25% by weight of aluminum salt, 5-20% by weight of iron salt, and 40-65% by weight of water. The activation intensifier has a low cost, and improves the strength of the cement mixed with a large amount of limestone and the compressive strength of the hardened cement-based slurry.

Description

technical field [0001] The invention relates to the field of cement additives, in particular to an activation enhancer applied to large-volume limestone cement. Background technique [0002] Cement is an indispensable building material in human life and social production. It has a wide range of uses and a large amount, and is known as "the grain of the construction industry". However, the cement production industry pollutes a lot and consumes a lot of energy. In order to save energy and reduce consumption, the best way is to develop or use more cement mixture materials, especially in the production of composite cement, use as little clinker as possible and mix more mixture materials. [0003] Limestone is widely distributed in our country and its price is low. When it is mixed into cement as an admixture, it can not only reduce the production cost of cement, but also improve a series of properties of cement, including reducing the water consumption of cement standard consis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/12
CPCC04B24/12C04B24/02C04B28/02C04B40/0039C04B2103/10
Inventor 朱化雨赵洪义冯恩娟傅秀新朱孔赞殷俊峰张辉张凤霞孟凡军
Owner SHANDONG HONGYI TECH
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