CN104177055A - Grouting material - Google Patents

Abstract

The invention discloses a grouting material and a preparation method thereof. The grouting material is prepared from solid sodium water glass, mineral slag micropowder, fly ash, micro silicon powder, metakaolin, a water reducer, a water retention agent and a flow promoter. On the basis of the geopolymer synthetic material technique, various industrial solid wastes are prepared into the dry powder grouting material. When the grouting material is in use, water can be proportionally added. The grouting material effectively solves the problems of poor durability and poor water resistance in the existing grouting material, and has the advantages of no toxicity, environment friendliness, high binding force, favorable durability, favorable aging resistance, high compression strength and high strength increase speed. Besides, by using abundant industrial solid wastes, the method is simple in production technique and lower in cost.

Description

A kind of injection material

Technical field

What the present invention relates to is a kind of injection material, belongs to building material field.

Background technology

Injection material is selected for reaching definite engineering purpose, can exist with liquid form, and be convenient to utilize hydraulic pressure, air pressure or electrochemical principle inject the internal space such as crack, crack, hole of respective media and there is cementation solidifying ability, make the leakage channel of medium obtain the general name of the improved class engineering materials of obstruction, physical behavior and mechanical property.Along with the development of grouting technique and material thereof, to develop various injection materials, but mainly contained two large classes, a class is solid granular injection material, water or special solvent carry out mix grouting in use; Another kind of is chemical grouting material, is mainly the injection material taking organic materials as carrier.

Usage quantity maximum is mainly cement-based grouting material and water glass class injection material at present.But, slow shortcoming that Portland cement base grouting material exists that plugging effect is poor, intensity rises, there is the shortcoming of consolidation strength and durability degree deficiency in water glass class injection material.The present invention is taking ground polymers synthetic materials technology as basis, utilize various Industrial Solid Wastes to be prepared into a kind of dry powder injection material, when use, only need to proportionally add water, not only effectively improve the problem of existing injection material weather resistance and poor water resistance, also had advantages of that cohesive force is strong, ultimate compression strength is high, gain in strength is fast.In addition,, owing to using in a large number Industrial Solid Wastes and production technique simple, therefore cost is relatively cheap.

Summary of the invention

The object of the invention is to use for reference prior art, prepare that a kind of cohesive force is strong, ultimate compression strength is high, weather resistance and water-tolerant, gain in strength is fast, technique is simple, with low cost injection material, to overcome that the existing plugging effect of conventional grout material is poor, intensity rises slow, the shortcoming of consolidation strength and durability degree deficiency.

The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of injection material, prepared by following weight parts raw material

1) formula:

Solid sodium silicate 10-20 part, slag micropowder 35-45 part, 25 ~ 35 parts, flyash, SILICA FUME 5-10 part, metakaolin 5-10 part, 1 ~ 3 part of water reducer, water-holding agent 0.1-0.3 part, flow promotor 1-5 part;

2) preparation method:

(1) first by solid flyash grinding in ball mill, until its particle diameter is less than 20 microns, stand-by;

(2) proportionally weigh other raw materials, join in agravic blender and be uniformly dispersed, then pack according to certain amount, obtain injection material;

Described solid water glass is commercially available industrial solid sodium silicate, and its modulus is 2.0-2.5, and after mixing with water, the solubleness in water is greater than 95%;

Described flyash is the dust collection thing after the coal burning of commercially available power plant or chemical plant emission;

Described slag is that granulated blast-furnace slag is worn into the slag micropowder that specific surface area is greater than 500 square metres/kilogram, is commercially available prod;

Described SILICA FUME is commercially available prod, and its fineness is greater than 1000 orders; Described metakaolin is that fineness is to be greater than 1000 the water-washed kaoline product through 2 hours gained of 800 DEG C of calcining at constant temperature;

Described water reducer is solid granular polycarboxylic acid mixing water reducer, is commercially available prod;

Described water-holding agent is Natvosol, is commercially available prod;

Described flow promotor is nano silicon, is commercially available prod.

Advantage of the present invention and effect: the present invention is taking ground polymers material synthesis technology as basis, injection material is by chemical reaction sclerosis fast, can reach at short notice very high intensity, product of the present invention intensity in 2 hours can reach 30MPa, within 1 day, intensity reaches 60MPa, meets the requirement of injection material completely.Injection material of the present invention has asepsis environment-protecting, cohesive force is strong, ultimate compression strength is high, good endurance, the simple advantage of good, the with low cost technique of ageing-resistant performance.

Embodiment

Embodiment 1:

The present invention fills a prescription one:

Component	Formula (weight part)
		Sodium silicate solid (m=2.0)	10
Slag micropowder	45
		Flyash	25
Metakaolin	8
		SILICA FUME	8
Water reducer	1
		Natvosol	0.1
Nano silicon	3
		Add up to	100.1

Embodiment 2

The present invention fills a prescription two:

Component	Formula (weight part)
		Sodium silicate solid (m=2.5)	20
Slag micropowder	35
		Flyash	35
Metakaolin	5
		SILICA FUME	5
Water reducer	3
		Natvosol	0.3
Nano silicon	1
		Add up to	104.3

Embodiment 3

The present invention fills a prescription three:

Component	Formula (weight part)
		Sodium silicate solid (m=2.2)	15
Slag micropowder	38
		Flyash	28
Metakaolin	10
		SILICA FUME	7
Water reducer	1
		Natvosol	0.2
Nano silicon	5
		Add up to	104.2

Embodiment 4

The present invention fills a prescription four:

Component	Formula (weight part)
		Sodium silicate solid (m=2.4)	18
Slag micropowder	35
		Flyash	30
Metakaolin	6
		SILICA FUME	8
Water reducer	1.5
		Natvosol	0.2
Nano silicon	2
		Add up to	100.7

More than formula is all to be prepared as follows method preparation:

(1) first by solid flyash grinding in ball mill, until its particle diameter is less than 20 microns, stand-by;

(2) proportionally weigh other raw materials, join in agravic blender and be uniformly dispersed, then pack according to certain amount, can obtain injection material.

Claims (1)

1. an injection material, is characterized in that described injection material prepared by following weight parts raw material:

1) formula:

Solid sodium silicate 10-20 part, slag micropowder 35-45 part, 25 ~ 35 parts, flyash, SILICA FUME 5-10 part, metakaolin 5-10 part, 1 ~ 3 part of water reducer, water-holding agent 0.1-0.3 part, flow promotor 1-5 part;

2) preparation method:

(1) first by solid flyash grinding in ball mill, until its particle diameter is less than 20 microns, stand-by;

(2) proportionally weigh other raw materials, join in agravic blender and be uniformly dispersed, then pack according to certain amount, obtain injection material.