CN103253907A

CN103253907A - Red mud/attapulgite ceramsite concrete hollow insulation block and preparation method thereof

Info

Publication number: CN103253907A
Application number: CN2013101234628A
Authority: CN
Inventors: 盛蕾; 盛志义
Original assignee: CHIZHOU XINLEI GREEN BUILDING MATERIAL Co Ltd
Current assignee: CHIZHOU XINLEI GREEN BUILDING MATERIAL Co Ltd
Priority date: 2013-04-11
Filing date: 2013-04-11
Publication date: 2013-08-21
Anticipated expiration: 2033-04-11
Also published as: CN103253907B

Abstract

The invention discloses a red mud/attapulgite ceramsite concrete hollow insulation block and a preparation method thereof. The block is prepared from the following raw materials by weight: 105 to 115 parts of ordinary Portland cement grade 42.5, 500 to 550 parts of stone chippings, 20 to 30 parts of red mud, 8 to 12 parts of attapulgite, 4 to 8 parts of paper pulp waste liquid, 3 to 5 parts of waste glass powder, 1 to 3 parts of coal dust, 20 to 25 parts of soluble glass, 8 to 12 parts of straw powder, 3 to 5 parts of a foaming agent, 1 to 2 parts of foots, 2 to 3 parts of a polyimide fiber, 0.5 to 1 part of a redispersible latex powder and 160 to 200 parts of water. The red mud/attapulgite ceramsite concrete hollow insulation block produced in the invention has the advantages of high strength, low density, good heat insulation performance, good impact resistance, small possibility of water absorption, fire resistance, flame retardation, good weatherability, environment-friendliness, energy conservation and the like and has great market space and development prospects in the application field of building energy conservation in China.

Description

A kind of red mud/attapulgite haydite concrete hollow heat-insulation building block and preparation method thereof

Technical field

The present invention relates to a kind of red mud/attapulgite haydite concrete hollow heat-insulation building block and preparation method thereof, belong to building material field.

Background technology

Materials for wall is the important component part of architectural exterior-protecting construction, along with the popularization of building energy conservation and people to the improving constantly of living environment comfortableness demand, wall heat insulation material more and more is subject to people's attention.Use more materials for wall at present and mainly contain concrete segment, air-entrained concrete building block, sintered perforated brick class etc.When ordinary concrete hollow block was used for the heat preservation energy-saving exterior wall, heat preservation and energy conservation effects was poor, in use must adhere to the lagging material of composite highly effective at internal surface or the outside surface of body of wall, the cost height, and difficulty of construction is big; Air-entrained concrete building block is because its thermal and insulating performance is good, the refractoriness height, and advantage such as density is little be widely used in the internal partition wall of skeleton construction, but it exists water-intake rate higher relatively, and intensity is relatively low, and cracking appears in body of wall easily; Sintered perforated brick is the pertusate brick of big face, and the hole is many and little, can't reach the requirement of heat preservation energy-saving.Above-mentioned materials for wall significant disadvantages and deficiency can't satisfy insulation or quality control requirement, and therefore, developing energy-conservation novel wall lagging material has as early as possible become the task of top priority.

Summary of the invention

The objective of the invention is at the deficiencies in the prior art, a kind of intensity height, volume stability is good, thermal and insulating performance is good red mud/attapulgite haydite concrete hollow heat-insulation building block and preparation method thereof are provided.

The technical solution used in the present invention is as follows:

A kind of red mud/attapulgite haydite concrete hollow heat-insulation building block is made by the raw material of following weight part: 42.5 ordinary Portland cement 105-115, stone fragment 500-550, red mud 20-30, attapulgite 8-12, spent pulping liquor 4-8, cullet powder 3-5, coal dust 1-3, water glass 20-25, straw powder 8-12, whipping agent 3-5, oil foot 1-2, polyimide fiber 2-3, redispersible latex powder 0.5-1, water 160-200.

The preparation method of a kind of red mud/attapulgite haydite concrete hollow heat-insulation building block, may further comprise the steps: (1) mixes red mud and attapulgite by shredder and grinds to form 100-200 order powder, add spent pulping liquor, cullet powder, coal dust again, stir, get the form of spherical particles raw material through extrusion molding, cutting, granulation, particle diameter is 2-3mm; With particle raw material dry 20-24h at room temperature, put into the 100-110 ℃ of dry 2-3h of thermostatic drying chamber again, at 1250-1350 ℃ of following high-temperature roasting 1-1.5h, namely get red mud/attapulgite haydite at last;

(2) the above-mentioned red mud that makes/attapulgite haydite is dropped in the high-speed mixer, add water glass again, heating in water bath is to 80-90 ℃, stir, add straw powder then, blend 3-5min under the 2000-3000rpm rotating speed sends into granulation in the tablets press at last, particle diameter control namely gets red mud/attapulgite haydite that straw powder coats at 2-3mm;

(3) get red mud/attapulgite haydite that the above-mentioned straw powder that makes coats and 42.5 ordinary Portland cements, stone fragment, polyimide fiber, redispersible latex powder dry mixing 30-50s, it is mixed, add water again and stir 3-5min, form mixed slurry;

(4) get whipping agent and add 12-16 water doubly obtains stable uniform after stirring 2-3min foam, stirring velocity 500-600/min, the ratio that adds foam 45-55 milliliter then in per 100 gram batch mixings, the foam that makes is fed in the batch mixing that step (3) obtains, after stirring, add oil foot again, namely get the foaming slurry behind the stirring 3-4min;

(5) slurry that will foam is injected into moulding in the building block mould, and the demoulding after 2-3 days namely gets the hollow heat-insulation building block finished product through vapor cure.

Described whipping agent is made up of the 4-5:2-3:1 mixing by weight proportion of sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, gelatin.

Beneficial effect of the present invention:

The present invention utilizes raw materials such as red mud, attapulgite to make haydite, it is little that it has light weight density, inner porous, corrosion-resistant, freeze proof fire-resistant, antidetonation and good characteristics such as isolated property, thus sandstones such as river sand, mountain sand and quartz sand in the concrete can be replaced, obviously improve the thermal and insulating performance of holllow building block; The present invention also utilizes straw powder to coat haydite, the haydite thermal and insulating performance that can further improve; The red mud that the present invention produces/attapulgite haydite concrete hollow heat-insulation building block has the intensity height, density is low, thermal and insulating performance good, good impact resistance, be difficult for suction; advantages such as fire protection flame retarding, good weatherability, environmental protection and energy saving, the building energy conservation Application Areas has the great market space and development prospect in China.

Embodiment

A kind of red mud/attapulgite haydite concrete hollow heat-insulation building block is made by the raw material of following weight part: 42.5 ordinary Portland cements 110, stone fragment 540, red mud 25, attapulgite 10, spent pulping liquor 6, cullet powder 4, coal dust 2, water glass 22, straw powder 10, whipping agent 4, oil foot 1.5, polyimide fiber 2, redispersible latex powder 0.6, water 180.

The preparation method of a kind of red mud/attapulgite haydite concrete hollow heat-insulation building block, may further comprise the steps: (1) mixes red mud and attapulgite by shredder and grinds to form 150 order powder, add spent pulping liquor, cullet powder, coal dust again, stir, get the form of spherical particles raw material through extrusion molding, cutting, granulation, particle diameter is 2mm; With particle raw material dry 24h at room temperature, put into 105 ℃ of dry 2h of thermostatic drying chamber again, at 1350 ℃ of following high-temperature roasting 1h, namely get red mud/attapulgite haydite at last;

(2) the above-mentioned red mud that makes/attapulgite haydite is dropped in the high-speed mixer, add water glass again, heating in water bath to 90 ℃, stir, add straw powder then, blend 3min under the 3000rpm rotating speed sends into granulation in the tablets press at last, particle diameter is 3mm, namely gets red mud/attapulgite haydite that straw powder coats;

(3) get the red mud/attapulgite haydite and 42.5 ordinary Portland cements, stone fragment, polyimide fiber, redispersible latex powder dry mixing 40s that the above-mentioned straw powder that makes coats, it is mixed, add water again and stir 4min, the formation mixed slurry;

(4) get the foam that whipping agent adds water acquisition stable uniform after stirring 2min of 15 times, stirring velocity 600/min, the ratio that adds 45 milliliters of foams then in per 100 gram batch mixings, the foam that makes is fed in the batch mixing that step (3) obtains, after stirring, add oil foot again, namely get the foaming slurry behind the stirring 3min;

(5) slurry that will foam is injected into moulding in the building block mould, and the demoulding after 3 days namely gets the hollow heat-insulation building block finished product through vapor cure.

Wherein, described whipping agent is made up of the 4:3:1 mixing by weight proportion of sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, gelatin.

After testing, its performance is: ultimate compression strength 4.6MPa, and drying shrinkage value 0. 07mm/m, volume water absorption rate 10%, thermal conductivity 0. 13W/mK is a kind of comparatively desirable heat-preserving energy-saving wall material.

Claims

1. red mud/attapulgite haydite concrete hollow heat-insulation building block; it is characterized in that, made by the raw material of following weight part: 42.5 ordinary Portland cement 105-115, stone fragment 500-550, red mud 20-30, attapulgite 8-12, spent pulping liquor 4-8, cullet powder 3-5, coal dust 1-3, water glass 20-25, straw powder 8-12, whipping agent 3-5, oil foot 1-2, polyimide fiber 2-3, redispersible latex powder 0.5-1, water 160-200.

2. the preparation method of red mud as claimed in claim 1/attapulgite haydite concrete hollow heat-insulation building block, it is characterized in that may further comprise the steps: (1) mixes red mud and attapulgite by shredder and grinds to form 100-200 order powder, add spent pulping liquor, cullet powder, coal dust again, stir, get the form of spherical particles raw material through extrusion molding, cutting, granulation, particle diameter is 2-3mm; With particle raw material dry 20-24h at room temperature, put into the 100-110 ℃ of dry 2-3h of thermostatic drying chamber again, at 1250-1350 ℃ of following high-temperature roasting 1-1.5h, namely get red mud/attapulgite haydite at last;

3. red mud according to claim 1 and 2/attapulgite haydite concrete hollow heat-insulation building block is characterized in that, described whipping agent is made up of the 4-5:2-3:1 mixing by weight proportion of sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, gelatin.