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Multifunctional chlorine-free alkali-free compound concrete slag admixture and its preparation process

A multifunctional concrete technology, applied in the field of concrete auxiliary materials, can solve the problems of single function and poor comprehensive performance, and achieve the effects of improving impermeability, compactness, and internal heat of hydration

Inactive Publication Date: 2007-08-15
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main defects of existing concrete slag admixtures are: single function, poor comprehensive performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In parts by weight, the components and dosage of the multifunctional composite concrete slag admixture are: 90 parts for inorganic industrial waste and 10 parts for organic raw materials. The specific components and dosage of inorganic industrial waste (based on the total amount as 100%) are: lithium-containing waste slag powder 50, calcium slag powder 25, phosphogypsum slag 5, fluorite tailings 10, silica fume 5 and rare earth waste 5 ; The specific components and dosages of organic raw materials (based on a total amount of 100%) are: organosilane 20, carbon fiber 25, methyl vinyl silicone rubber 10, oligoglycerin 10, polyepoxysulfonate 10, polycarboxylate salt 10, diethylenetriamine condensate 10 and tartaric acid 5.

Embodiment 2

[0035] In parts by weight, the components and dosage of the multifunctional composite concrete slag admixture are: 90 parts for inorganic industrial waste and 10 parts for organic raw materials. The specific components and dosage of inorganic industrial waste (based on the total amount as 100%) are: lithium-containing waste slag powder 45, calcium slag powder 20, phosphogypsum slag 10, fluorite tailings 15, silica fume 5 and rare earth waste 5 Concrete components and consumption of organic raw materials (based on total amount of 100%) are: organosilane 25, carbon fiber 15, methyl vinyl silicone rubber 15, polyepoxide sulfonate 10, polycarboxylate 10, low Polyglycerol 10, diethylenetriamine condensate 10 and tartaric acid 5.

Embodiment 3

[0037] In parts by weight, the components and dosage of the multifunctional composite concrete slag admixture are: 90 parts for inorganic industrial waste and 10 parts for organic raw materials. The specific components and dosage of inorganic industrial waste (based on the total amount as 100%) are: lithium-containing waste slag powder 40, calcium slag powder 25, phosphogypsum slag 20, fluorite tailings 15, silica fume 5 and rare earth waste 5 The specific components and consumption of organic raw materials (based on a total amount of 100%) are: organosilane 30, carbon fiber 20, methyl vinyl silicone rubber 15, polyepoxide sulfonate 15, polycarboxylate 5, low Polyglycerol 5, diethylenetriamine condensate 5 and tartaric acid 5.

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Abstract

Disclosed is a multifunctional chlorine-free alkali-free compound concrete slag admixture which comprises (by weight ratio) inorganic industrial waste material 90-95%, organic raw material 5-10%, the inorganic industrial waste material is selected from lithium slag powder, calcium slag powder, phosphogypsum slag, fluorite tailings, composite of silicon ash and rare earth waste material, the organic raw material is selected from organosilane, carbon fiber, methylvinyl silicone rubber, polyepoxysulfonate, polycarboxylate, low polyglycerol, compound of diethylene triamine condensate and tartaric acid. The preparation method comprises the following steps, mixing inorganic industrial waste materials by proportion and grinding to 0.08mm, grinding organic raw material to grain diameter of below 1um, charging 5-10% of organic raw materials into 90-95% of inorganic raw materials.

Description

technical field [0001] The invention belongs to concrete auxiliary materials in building materials, and provides a chlorine-free and alkali-free multifunctional composite concrete slag admixture and a production method thereof. Background technique [0002] Concrete is the most widely used man-made material in contemporary times. Now our country is in the climax of capital construction, and the amount of concrete is the highest in the world. Concrete is a building material with good durability under scientifically designed construction conditions, but if this is not achieved, and under severe service environments, concrete will show a very short service life. The service life of general concrete projects is about 50-100 years, but many projects need maintenance after 10-20 years of use, and some even after several years of use. Therefore, it is necessary to re-understand the durability of concrete, change the concept of natural durability of concrete, and give priority to d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/04C04B24/00
CPCY02W30/91
Inventor 莫祥银
Owner NANJING NORMAL UNIVERSITY
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