CN103030360A - Novel foam concrete and production process thereof - Google Patents

Abstract

The invention relates to the field of building materials, in particular to novel foam concrete and a production process thereof. The novel foam concrete comprises the following components in part by mass: 100 parts of magnesium oxide, 40 to 50 parts of magnesium chloride, 30 to 40 parts of water, 0.5 to 1.2 parts of modifying agent, 0.3 to 0.5 parts of foaming agent, 20 to 30 parts of coal ash and the like. The foam concrete has the characteristics of light weight, high strength, low water absorption, stable size and the like, and can be widely applied in the fields of cast-in-place walls, foundation trench filling roof thermal insulation and the like.

Description

A kind of novel foam concrete and production technique thereof

Technical field

The present invention relates to building material field, be specifically related to a kind of novel foam concrete and production technique thereof.

Technical background

Foamed concrete is to utilize mechanical system that foaming agent water solution is made foam, again foam is sneaked in the various Additive finish mix slurries, through mix and blend, build a kind of porous material that moulding, maintenance form, owing to having the tiny hole of a large amount of sealings in the foamed concrete, have good thermal and insulating performance, be widely used in the fields such as cast-in-situ wall, foundation trench filling and roof heat insulation.

At present, the problem such as common foamed concrete product ubiquity low strength, water-intake rate be high, easy to crack on the market, the widespread adoption that has seriously restricted foamed concrete is promoted.

Summary of the invention

The object of the invention is to overcome above deficiency, provide a kind of high-strength light, water-intake rate is low, volume stability good, novel foam concrete and the production technique thereof of energy-conserving and environment-protective.

For achieving the above object, the technical scheme taked of the present invention is as follows:

A kind of novel foam concrete, made by materials such as magnesium oxide, magnesium chloride, water, properties-correcting agent, whipping agent, flyash, the composition of its each component (mass parts) is: 100 parts in magnesium oxide, 40～50 parts in magnesium chloride, 30～40 parts in water, 0.5～1.2 part of properties-correcting agent, 0.3～0.5 part of whipping agent, 20～30 parts in flyash.

Its production technique is:

A, modulation magnesium chloride solution are with magnesium chloride and water mixed preparing magnesium chloride solution;

B, preparation magnesite slip mix magnesium oxide, magnesium chloride solution, properties-correcting agent, flyash by technical requirements;

C, preparation foam are deployed into expanding foam solution with whipping agent, send out into foam with foaming machine;

D, preparation foaming magnesite cement, magnesite slip and the foams mix for preparing is even;

E, moulding are poured foaming magnesite cement in preprepared mould moulding;

F, the demoulding, question response gets final product the demoulding after solidifying;

G, cutting maintenance are cut product after the demoulding by the specification requirement, 20 ℃ of temperature, maintenance can be used in 5～7 days under the condition of humidity 75%.

Beneficial effect of the present invention is embodied in:

Because the magnesium chloride of formation foamed concrete of the present invention, the magnesia cement that magnesium oxide forms belong to high-strength cement, owing to adding a large amount of foams in the slip, make product unit weight can be low to moderate 200～400 ㎏/m3, so product strength is high, lightweight simultaneously;

There are countless micro-bubbles and bubble separate, not connected owing to consisting of the inside of foamed concrete of the present invention, make that the product water-intake rate is low, volume stability good, thermal and insulating performance is good;

Because consisting of the raw material of the solidifying soil of foam coagulation of the present invention is magnesium chloride, magnesium oxide, water, properties-correcting agent, whipping agent, flyash, nontoxic in the production and application process, and can utilize the trade waste such as flyash, energy-conserving and environment-protective;

Foamed concrete manufacture craft of the present invention is simple, and flow process is short, and cost is low.

Embodiment:

Take following proportioning raw materials as example: 100 parts of light-magnesite powder, 40 parts in magnesium chloride, 30 parts in water, 0.8 part of properties-correcting agent, 0.3 part of whipping agent, 20 parts in flyash.

Foamed concrete of the present invention is made by following steps:

A, modulation magnesium chloride solution are with magnesium chloride and water mixed preparing magnesium chloride solution;

B, preparation magnesite slip mix magnesium oxide, magnesium chloride solution, properties-correcting agent, flyash by technical requirements;

C, preparation foam are deployed into expanding foam solution with whipping agent, send out into foam with foaming machine;

D, preparation foaming magnesite cement, magnesite slip and the foams mix for preparing is even;

E, moulding are poured foaming magnesite cement in preprepared mould moulding;

F, the demoulding, question response gets final product the demoulding after solidifying;

G, cutting maintenance are cut product after the demoulding by the specification requirement, 20 ℃ of temperature, maintenance can be used in 5～7 days under the condition of humidity 75%.

Claims (2)

1. novel foam concrete, made by materials such as magnesium oxide, magnesium chloride, water, properties-correcting agent, whipping agent, flyash, the composition of its each component (mass parts) is: 100 parts in magnesium oxide, 40～50 parts in magnesium chloride, 30～40 parts in water, 0.5～1.2 part of properties-correcting agent, 0.3～0.5 part of whipping agent, 20～30 parts in flyash.

2. novel foam concrete according to claim 1, its production technique is:

A, modulation magnesium chloride solution are with magnesium chloride and water mixed preparing magnesium chloride solution;

B, preparation magnesite slip mix magnesium oxide, magnesium chloride solution, properties-correcting agent, flyash by technical requirements;

C, preparation foam are deployed into expanding foam solution with whipping agent, send out into foam with foaming machine;

D, preparation foaming magnesite cement, magnesite slip and the foams mix for preparing is even;

E, moulding are poured foaming magnesite cement in preprepared mould moulding;

F, the demoulding, question response gets final product the demoulding after solidifying;

G, cutting maintenance are cut product after the demoulding by the specification requirement, 20 ℃ of temperature, maintenance can be used in 5～7 days under the condition of humidity 75%.