CN104891945A - Magnesite concrete - Google Patents

Abstract

The invention discloses a magnesite concrete which is prepared from the following raw materials in parts by weight: 50-60 parts of magnesite, 320-400 parts of ordinary Portland cement, 6-10 parts of bentonite, 10-20 parts of coal gangue, 5-8 parts of novel water reducing agent, 3-5 parts of rosin, 500-600 parts of river sand, 3-4 parts of magnesium chloride, 30-50 parts of blast-furnace cinder, 5-10 parts of dry carbide slag, 1-2 parts of sodium lauroyl sarcosine, 3-5 parts of bone coal, 170-200 parts of water, 3-5 parts of glass powder, 1-2 parts of ferrous sulfate, 4-6 parts of calcium phosphate, 1000-1100 parts of limestone rubble, 1-1.6 parts of air entraining agent and 1-2 parts of ethylenediamine tetraacetic acid. After the magnesite is mixed in the magnesium chloride solution and mixed with the solution a, the hardness and surface water resistance are effectively enhanced. The concrete has the advantages of high overall quality, high wear resistance, high impact resistance, high hardness, favorable crack resistance, long service life, high safety and environment friendliness.

Description

A kind of magnesia concrete

Technical field

The present invention relates generally to concrete field, particularly relates to a kind of magnesia concrete.

Background technology

Normal concrete is configured by suitable proportion by gelling material, thick, thin aggregate and water, the more artificial stone material through hardening.Have easy-formation, energy consumption is low, good endurance low price and be combined the advantage that can be made into various support mechanism with steel, is that the development of contemporary most widely used material of construction to human society plays a very important role.Also there is toughness difference in current concrete, fragility is large, dry shrinkage is large, easily the deficiencies such as cracking occurs.

Summary of the invention

The object of the invention is just to provide a kind of magnesia concrete.

The present invention is achieved by the following technical solutions:

A kind of magnesia concrete, is characterized in that what it was made up of the raw material of following weight parts:

Magnesia 50-60, wilkinite 6-10, ordinary Portland cement 320-400, coal gangue 10-20, novel water reducer 5-8, rosin 3-5, river sand 500-600, magnesium chloride 3-4, blast-furnace slag 30-50, dry carbide slag 5-10, sodium lauroyl sareosine 1-2, bone black 3-5, water 170-200, glass powder 3-5, calcium phosphate 4-6, limestone gravel 1000-1100, air entrapment agent 1-1.6, ferrous sulfate 1-2, ethylenediamine tetraacetic acid (EDTA) 1-2;

Described novel water reducer is made up of the raw material of following weight parts:

Polycarboxylate water-reducer 20-30, Sodium Silicofluoride 3-4, ethylene glycol 0.8-1, ammoniacal liquor 1-2, silane coupling agent KH560 0.1-0.2;

Ethylene glycol is mixed with ammoniacal liquor, obtains alcohol ammonia solution after stirring, add Sodium Silicofluoride, insulated and stirred 10-20 minute at 30-35 DEG C, adds silane coupling agent KH560,100-120 rev/min of dispersed with stirring 4-6 minute, add polycarboxylate water-reducer, stir, to obtain final product;

Described air entrapment agent is rosined soap class air entrapment agent.

The concrete preparation method of a kind of magnesia, is characterized in that comprising the following steps:

(1) by coal gangue, wilkinite mixing, at 700-800 DEG C, calcine 1-2 hour, mix with dry carbide slag, blast-furnace slag after discharging cooling, grinding, obtains powder; Mix after rosin heating fusing with above-mentioned powder, ball milling is even;

(2) joined by sodium lauroyl sareosine in 10-20 times of water, add calcium phosphate, ferrous sulfate, bone black, stir, add ethylenediamine tetraacetic acid (EDTA) after stirring, insulated and stirred 20-30 minute at 70-75 DEG C, is cooled to normal temperature, obtains liquid a; Magnesium chloride is joined in 10-15 times of water, add magnesia after stirring, be uniformly mixed 20-30 minute, add liquid a, fully stir;

(3) air entrapment agent is joined in remaining water, stir, obtain bleed liquid;

(4) by each raw material mixing after above-mentioned process, add each raw material beyond bleed liquid, stir, add bleed liquid, stir, obtain described magnesia concrete.

Advantage of the present invention is:

After magnesia mixes and stirs by concrete of the present invention in magnesium chloride solution, then mix with liquid a prepared by the present invention, effectively raise its hardness and surperficial water resisting property, concrete overall quality of the present invention is high, and wear-resistant shock resistance is strong, and hardness is high, splitting resistance is good, long service life, and Safety and Environmental Protection is good.

Embodiment

Embodiment 1

A kind of magnesia concrete, is characterized in that what it was made up of the raw material of following weight parts:

Magnesia 60, wilkinite 10, ordinary Portland cement 400, coal gangue 20, novel water reducer 5, rosin 5, river sand 600, magnesium chloride 3, blast-furnace slag 50, dry carbide slag 10, sodium lauroyl sareosine 1, bone black 5, water 200, glass powder 5, calcium phosphate 4, ferrous sulfate 1-2, limestone gravel 1100, air entrapment agent 1-1.6, ethylenediamine tetraacetic acid (EDTA) 2;

Described novel water reducer is made up of the raw material of following weight parts:

Polycarboxylate water-reducer 30, Sodium Silicofluoride 4, ethylene glycol 0.8, ammoniacal liquor 1, silane coupling agent KH560 0.2;

Mixed with ammoniacal liquor by ethylene glycol, obtain alcohol ammonia solution, add Sodium Silicofluoride after stirring, at 35 DEG C, insulated and stirred 20 minutes, adds silane coupling agent KH560, and 120 revs/min of dispersed with stirring 6 minutes, add polycarboxylate water-reducer, stir, to obtain final product;

Described air entrapment agent is rosined soap class air entrapment agent.

The concrete preparation method of a kind of magnesia, is characterized in that comprising the following steps:

(1) by coal gangue, wilkinite mixing, calcine 2 hours at 800 DEG C, mix with dry carbide slag, blast-furnace slag after discharging cooling, grinding, obtains powder; Mix after rosin heating fusing with above-mentioned powder, ball milling is even;

(2) joined by sodium lauroyl sareosine in 20 times of water, add calcium phosphate, ferrous sulfate, bone black, stir, add ethylenediamine tetraacetic acid (EDTA) after stirring, at 75 DEG C, insulated and stirred 30 minutes, is cooled to normal temperature, obtains liquid a; Magnesium chloride is joined in 15 times of water, add magnesia after stirring, be uniformly mixed 20-30 minute, add liquid a, fully stir;

(3) air entrapment agent is joined in remaining water, stir, obtain bleed liquid;

(4) by each raw material mixing after above-mentioned process, add each raw material beyond bleed liquid, stir, add bleed liquid, stir, obtain described magnesia concrete.

Performance test:

Folding strength: 8.2MPa.

Claims (2)

1. a magnesia concrete, is characterized in that what it was made up of the raw material of following weight parts:

Magnesia 50-60, wilkinite 6-10, ordinary Portland cement 320-400, coal gangue 10-20, novel water reducer 5-8, rosin 3-5, river sand 500-600, magnesium chloride 3-4, blast-furnace slag 30-50, dry carbide slag 5-10, sodium lauroyl sareosine 1-2, bone black 3-5, water 170-200, glass powder 3-5, calcium phosphate 4-6, limestone gravel 1000-1100, air entrapment agent 1-1.6, ferrous sulfate 1-2, ethylenediamine tetraacetic acid (EDTA) 1-2;

Described novel water reducer is made up of the raw material of following weight parts:

Polycarboxylate water-reducer 20-30, Sodium Silicofluoride 3-4, ethylene glycol 0.8-1, ammoniacal liquor 1-2, silane coupling agent KH560 0.1-0.2;

Ethylene glycol is mixed with ammoniacal liquor, obtains alcohol ammonia solution after stirring, add Sodium Silicofluoride, insulated and stirred 10-20 minute at 30-35 DEG C, adds silane coupling agent KH560,100-120 rev/min of dispersed with stirring 4-6 minute, add polycarboxylate water-reducer, stir, to obtain final product;

Described air entrapment agent is rosined soap class air entrapment agent.

2. the concrete preparation method of magnesia as claimed in claim 1, is characterized in that comprising the following steps:

(1) by coal gangue, wilkinite mixing, at 700-800 DEG C, calcine 1-2 hour, mix with dry carbide slag, blast-furnace slag after discharging cooling, grinding, obtains powder; Mix after rosin heating fusing with above-mentioned powder, ball milling is even;

(2) joined by sodium lauroyl sareosine in 10-20 times of water, add calcium phosphate, ferrous sulfate, bone black, stir, add ethylenediamine tetraacetic acid (EDTA) after stirring, insulated and stirred 20-30 minute at 70-75 DEG C, is cooled to normal temperature, obtains liquid a; Magnesium chloride is joined in 10-15 times of water, add magnesia after stirring, be uniformly mixed 20-30 minute, add liquid a, fully stir;

(3) air entrapment agent is joined in remaining water, stir, obtain bleed liquid;

(4) by each raw material mixing after above-mentioned process, add each raw material beyond bleed liquid, stir, add bleed liquid, stir, obtain described magnesia concrete.