CN103787631A - Fire-retardant and thermal-insulation mortar - Google Patents

Abstract

The invention discloses fire-retardant and thermal-insulation mortar. The mortar consists of the following raw materials in parts by weight: 30-40 parts of high-alumina cement, 40-50 parts of glass bead, 10-15 parts of carborundum, 0.5-1 part of hydroxypropyl methyl cellulose, 2-4 parts of viny acetateethylene emulsion (VAE) re-dispersible emulsion powder, 1-3 parts of polypropylene fiber, 0.5-1.5 parts of wood fiber, 5-10 parts of heavy calcium powder, 3-6 parts of seaweed powder, 4-8 parts of brucite powder, 3-5 parts of mica powder, 8-12 parts of kaolin, 5-10 parts of gypsum, 0.3-0.5 part of polycarboxylic water reducer and 4-6 parts of thermal insulation particles. The fire-retardant and thermal-insulation mortar disclosed by the invention is excellent in fire retardant performance, good in flame retardant property, good in thermal insulation and heat preservation performance, high in binding strength, strong in adhesive force, excellent in crack resistance and weather fastness, low in cost and wide in application prospect and is convenient to construct, and fire retarding grade reaches A grade.

Description

Fire resistant heat preserving mortar

Technical field

The present invention relates to a kind of fire resistant heat preserving mortar, belong to building material field.

Background technology

Thermal insulation mortar is take various light materials as aggregate, take cement as gelating material, admix some property-modifying additives, be uniformly mixed and a kind of premixing dry-mix of making through manufacturing enterprise, be mainly used in constructing a kind of material of construction of building surface thermal insulation layer, there is the features such as energy-conserving profit waste, heat insulating, ageing-resistant excellent properties and cheap, easy construction, have the market requirement widely.Thermal insulation mortar is in the market of a great variety, and spread in performance is uneven, and most of thermal insulation mortars still exist the poor deficiency of resistivity against fire, has a strong impact on the fire resistance of building.

Summary of the invention

The object of the invention is for the deficiencies in the prior art, and a kind of fire resistant heat preserving mortar is provided, and improves its fire resistance.

For achieving the above object, the technical solution used in the present invention is as follows:

A kind of fire resistant heat preserving mortar, is made up of the raw material of following weight part: high-alumina cement 30-40, glass bead 40-50, silicon carbide 10-15, hydroxypropyl methyl cellulose ether 0.5-1, VAE redispersible latex powder 2-4, polypropylene fibre 1-3, wood fibre 0.5-1.5, dicalcium powder 5-10, edible seaweed powder 3-6, brucite powder 4-8, mica powder 3-5, kaolin 8-12, gypsum 5-10, poly carboxylic acid series water reducer 0.3-0.5, heat-insulating granules 4-6;

The preparation method of described heat-insulating granules is as follows: a, take rhombspar, flint clay, fibrolite, volcanics mix by weight 4-8:3-5:2-3:1, pulverize, wet ball grinding 12-24h, dry, be placed in 860-920 ℃ of temperature lower calcination 1-2h, be cooled to room temperature, then adding concentration is that in the hydrochloric acid soln of 10-15%, heating in water bath is to 80-90 ℃, insulation 20-30min, taking-up is washed with distilled water to neutrality, dries, then is placed in 1180-1240 ℃ of temperature lower calcination 0.5-1h, shrend, obtain saccharoid, dry, stand-by; B, to get the solid content that is equivalent to saccharoid weight 15-20% be 40-45% Nano silica sol, add the asbestos powder of 5-8%, the nanometer vermiculite powder of 4-6%, the rice hull ash of 3-4%, cinder powder, the Sodium hexametaphosphate 99 of 1-2% and the polyoxyethylene of 2-3% of 2-3%, after stirring, add the above-mentioned saccharoid making, stir, dry.

Using method: above-mentioned raw materials is mixed, then by weight 1: the ratio of 1.0-1.5 can be used after mortar dry powder and water are stirred.

Beneficial effect of the present invention:

Thermal insulation mortar fire performance excellence of the present invention, flame retardant properties is good, and fire-protection rating reaches A level, and heat insulation property is good, and cohesive strength is high, strong adhesion, splitting resistance and weathering resistance are good, with low cost, and easy construction has a extensive future.

Embodiment

A kind of fire resistant heat preserving mortar, is made up of the raw material of following weight (kg): high-alumina cement 36, glass bead 42, silicon carbide 10, hydroxypropyl methyl cellulose ether 0.6, VAE redispersible latex powder 3, polypropylene fibre 2, wood fibre 0.8, dicalcium powder 7, edible seaweed powder 4, brucite powder 6, mica powder 4, kaolin 10, gypsum 8, poly carboxylic acid series water reducer 0.4, heat-insulating granules 5;

The preparation method of described heat-insulating granules is as follows: a, take rhombspar, flint clay, fibrolite, volcanics mix by weight 6:4:2:1, pulverize wet ball grinding 24h, dry, be placed in 880 ℃ of temperature lower calcination 2h, be cooled to room temperature, then adding concentration is in 15% hydrochloric acid soln, heating in water bath to 90 ℃, insulation 20min, taking-up is washed with distilled water to neutrality, dries, then is placed in 1220 ℃ of temperature lower calcination 0.5h, shrend, obtain saccharoid, dry, stand-by; B, to get the solid content that is equivalent to saccharoid weight 20% be 40% Nano silica sol, add 6% asbestos powder, 5% nanometer vermiculite powder, 3% rice hull ash, 2% cinder powder, 1.5% Sodium hexametaphosphate 99 and 2% polyoxyethylene, after stirring, add the above-mentioned saccharoid making, stir, dry.

Using method: above-mentioned raw materials is mixed, can use after then by weight the ratio of 1: 1.2, mortar dry powder and water being stirred.

The performance perameter of the thermal insulation mortar that the present embodiment is produced sees the following form.

Project	Measure unit	Measured value
			Thermal conductivity	W/（m·k）	0.038
28d cohesive strength	MPa	2.6
			28d ultimate compression strength	MPa	32
Linear shrinkage	%	0.24
			Coefficient of softening	—	0.93
Splitting resistance	—	The following flawless of 5mmm

Claims (1)

1. a fire resistant heat preserving mortar, it is characterized in that, formed by the raw material of following weight part: high-alumina cement 30-40, glass bead 40-50, silicon carbide 10-15, hydroxypropyl methyl cellulose ether 0.5-1, VAE redispersible latex powder 2-4, polypropylene fibre 1-3, wood fibre 0.5-1.5, dicalcium powder 5-10, edible seaweed powder 3-6, brucite powder 4-8, mica powder 3-5, kaolin 8-12, gypsum 5-10, poly carboxylic acid series water reducer 0.3-0.5, heat-insulating granules 4-6;

The preparation method of described heat-insulating granules is as follows: a, take rhombspar, flint clay, fibrolite, volcanics mix by weight 4-8:3-5:2-3:1, pulverize, wet ball grinding 12-24h, dry, be placed in 860-920 ℃ of temperature lower calcination 1-2h, be cooled to room temperature, then adding concentration is that in the hydrochloric acid soln of 10-15%, heating in water bath is to 80-90 ℃, insulation 20-30min, taking-up is washed with distilled water to neutrality, dries, then is placed in 1180-1240 ℃ of temperature lower calcination 0.5-1h, shrend, obtain saccharoid, dry, stand-by; B, to get the solid content that is equivalent to saccharoid weight 15-20% be 40-45% Nano silica sol, add the asbestos powder of 5-8%, the nanometer vermiculite powder of 4-6%, the rice hull ash of 3-4%, cinder powder, the Sodium hexametaphosphate 99 of 1-2% and the polyoxyethylene of 2-3% of 2-3%, after stirring, add the above-mentioned saccharoid making, stir, dry.