CN102092991A - Special mortar for aerated concrete using red mud as inorganic mineral thickening agent - Google Patents
Special mortar for aerated concrete using red mud as inorganic mineral thickening agent Download PDFInfo
- Publication number
- CN102092991A CN102092991A CN2009103110731A CN200910311073A CN102092991A CN 102092991 A CN102092991 A CN 102092991A CN 2009103110731 A CN2009103110731 A CN 2009103110731A CN 200910311073 A CN200910311073 A CN 200910311073A CN 102092991 A CN102092991 A CN 102092991A
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- Prior art keywords
- red mud
- mortar
- water
- inorganic mineral
- mineral thickening
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses special mortar for aerated concrete using red mud as an inorganic mineral thickening agent. The mortar is formed by mixing the following components in percentage by mass: 15-20 percent of cement, 5-10 percent of fly ash, 5-10 percent of red mud, 65-70 percent of phosphorus slag granules, 0.1-0.2 percent of admixture and the balance of water, wherein the water adding amount is based on the consistency controlled at 80-120 millimeters. The characteristic of strong water holding property of the red mud is used in the mortar, and the red mud is used as the inorganic mineral thickening agent, so that the water holding property of the mortar is increased under the condition that other mineral thickening agents are not added, and the workability of the mortar is improved; and meanwhile, the phosphorus slag is used as a fine mortar aggregate, so that the production cost is greatly reduced on the premise that the strength and the other properties meet the requirements of the special mortar for the aerated concrete, the environmental pollution is reduced, and greening of pre-mixed commodity mortar production is realized.
Description
Technical field
The present invention relates to a kind of construction cement mortar, particularly a kind of with the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material.
Background technology
The premixing commodity mortar refers to various starting material to be transported to a kind of mortar product in building site by transportation means (using airtight tank car usually) through rationally configuration and factory operation: be characterized in that production lot is big, steady quality, comprehensive cost be low.The gas concrete dedicated mortar has the characteristics of oneself as a kind of premixing commodity mortar.At first adopting ordinary mortar to build aerated-block by laying bricks or stones, as no practical measures, can not guarantee the full of slit mortar and both good bondings, is the one of the main reasons of wall crazing.This is the poor water retention property owing to ordinary mortar, and the moisture in the mortar is very fast to be sopped up, and fully hydration reaction does not reach cohesive strength; Secondly the shrinkage value of ordinary mortar and building block is different, and the variation of volume makes the building block tension, and two adjacent mortar pressurizeds when tensile stress during greater than tensile strength, are not that building block is broken, and is that seam damages or the continuous damage of building block, produces wall crazing thus.The gas concrete dedicated mortar has just in time remedied these problems of ordinary mortar.
Red mud is the industrial residue that produces in the aluminum oxide production process.According to the process for making alumina difference, red mud is divided into two kinds of Bayer process red mud and red mud from sintering process.1 ton of aluminum oxide of general every production just produces 1.0～1.4 tons of red muds.About 7,000 ten thousand tons of the annual discharging in whole world red mud has strong basicity and radioactivity, and the pH value is usually at 10-13.China's five big alumina producers, the red mud amount of year discharge just reaches 6,000,000 tons, accumulates the red mud volume of cargo in storage up to 5,000 ten thousand tons, its utilization ratio less than 10%.Although. on the red mud problem, the world has carried out the development efforts of five more than ten years, up to today, effectively utilizes the red mud technology not try out again.Large-scale processing red mud still is a thorny problem, needs a large amount of storage spaces, has caused serious environmental problems.Along with the high speed development of aluminum oxide industry, the red mud quantity discharged increases day by day in recent years, and how effectively disposing red mud is present urgent problem.
Mainly be by building red mud dump, stacking for a long time for the extensive method of disposing of red mud in the world at present.The construction of red mud dump can utilize landform construction such as mountain valley dell according to geographical position of living in the mountain area; Can adopt in the plains region and on the level land, to pile the dell construction; Adopt pipeline directly to import in the deep-sea in the area of bordering on the sea, make it be deposited on methods such as seabed naturally.This method of disposal takies a large amount of soils, and the chemical ingredients in the red mud infiltrates the soil, easily causes soil alkalization, paludification, ecological environment problems such as groundwater pollution.In the current society that resource scarcity at present, environment protection become more and more important, the recycling of red mud and the comprehensive regulation thereof have become one of focal issue.
Summary of the invention
It is a kind of with the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material that technical problem to be solved by this invention is to provide.This mortar has reduced production cost significantly, has reduced environmental pollution, has realized the greenization that the premixing commodity mortar is produced.
For solving the problems of the technologies described above technical scheme of the present invention: with the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material.This mortar is to be mixed by following mass percent by cement, flyash, red mud, phosphorus slag particle and water; Cement 15～20%, flyash 5～10%, red mud 5～10%, phosphorus slag particle 65～70%, admixture 0.1%～0.2%, all the other are water; The amount that adds water is controlled at 80～120mm with denseness and is as the criterion.
Above-mentioned with in the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, described phosphorus slag particle grain size is less than 1.25mm, and water ratio is less than 0.5%.
Aforesaid described cement is ordinary Portland cement or Portland blast with in the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, and cement intensity is 32.5 or 42.5.
Aforesaid with in the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, described flyash is II level or the above commodity flyash of II level.
Aforesaid described red mud is Bayer process or red mud from sintering process with in the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, and its fineness is less than 1.18mm.
Aforesaid with in the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, described admixture is the composition of water-retaining admixture and retardant, wherein the mass percent of water-retaining admixture is 0.1%～0.15%, and the mass percent of retardant is 0.05%～0.1%.
Beneficial effect of the present invention: compared with prior art, the present invention has utilized the strong characteristics of red mud water-retentivity, with red mud as the inorganic mineral thickening material, red mud is mixed in the gas concrete dedicated mortar, under the situation of not mixing other mineral thickeners, increased the water-retentivity of mortar, improve the mortar workability, solved the problem of ordinary mortar poor water retention property.Use the industrial residue phosphorus slag as the mortar fine aggregate simultaneously, satisfy in intensity and other performances under the prerequisite of gas concrete dedicated mortar requirement and reduced production cost significantly, reduced environmental pollution, having realized the greenization that the premixing commodity mortar is produced, is the green ecological product that belongs to energy-saving and cost-reducing.
One aspect of the present invention has been used the good characteristic of red mud powder water-keeping thickening, replaces the part water-retaining admixture, still can keep the good and little performance of delamination degree of dedicated mortar workability under the situation that reduces admixture dosage; Use the characteristic that industrial residue phosphorus slag coarse particles crushing rate is big, intensity is low on the other hand, with replace behind its fragmentation, the sub-sieve mountain sand as gas concrete special use build the fine aggregate of premixing commodity mortar by laying bricks or stones, reduced cost.The application of waste residue such as red mud and phosphorus slag greatly reduces production cost, has reduced environmental pollution.The present invention utilizes the strong characteristics of red mud water-retentivity, regulate the volume of material, the mechanical property of the mortar that records and physicals all satisfy " steam-pressing aero-concrete is with building by laying bricks or stones and plastering mortar " (JC 890-2001) standard-required, water retentivity of mortar reaches more than 98% according to regulation test in " premixing mortar " (JG/T 230-2007) standard.Dedicated mortar 28d ultimate compression strength 〉=3.5MPa can not only be turned waste into wealth as gas concrete with building by laying bricks or stones and plastering mortar usefulness, turns harm into good, and alleviates environmental pollution, saves a large amount of soils, has significant technology and economic implications.
The present invention is further illustrated for following embodiment.
Embodiment
Embodiment 1.Mix, stir and form by following mass percent by cement, flyash, red mud, phosphorus slag particle and water: cement 20%, flyash 5%, red mud 5%, admixture 0.2%, phosphorus slag 70%, all the other are water; The amount that adds water is controlled at 90～110mm with denseness and is as the criterion.Wherein the phosphorus slag particle grain size is less than 1.25mm, and water ratio is less than 0.5%; Cement is ordinary Portland cement or Portland blast, and cement intensity is 32.5 or 42.5; Flyash is II level or the above commodity flyash of II level; Red mud is Bayer process or red mud from sintering process, and its fineness is less than 1.18mm; Admixture is the composition of water-retaining admixture and retardant, and wherein the mass percent of water-retaining admixture is 0.1%～0.15%, and the mass percent of retardant is 0.05%～0.1%.The water-retentivity that records mortar is 99.6%, and delamination degree is 4mm, and 28d ultimate compression strength is 6.4MPa, meets the requirements.
Embodiment 2.Mix, stir and form by following mass percent by cement, flyash, red mud, phosphorus slag particle and water: cement 15%, flyash 5%, red mud 10%, admixture 0.15%, phosphorus slag 70%, all the other are water, the amount that adds water is controlled at 90～110mm with denseness and is as the criterion.Wherein the phosphorus slag particle grain size is less than 1.25mm, and water ratio is less than 0.5%; Cement is ordinary Portland cement or Portland blast, and cement intensity is 32.5 or 42.5; Flyash is II level or the above commodity flyash of II level; Red mud is Bayer process or red mud from sintering process, and fineness is less than 1.18mm; Admixture is the composition of water-retaining admixture and retardant, and wherein the mass percent of water-retaining admixture is 0.1%～0.15%, and the mass percent of retardant is 0.05%～0.1%.Record the water-retentivity 99.1% of mortar, delamination degree is 5mm, and 28d ultimate compression strength is 4.2MPa.
Embodiments of the present invention are not limited to the foregoing description, and the various variations of making under the prerequisite that does not break away from aim of the present invention all belong within protection scope of the present invention.
Claims (6)
1. one kind with the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, it is characterized in that: mixed by following mass percent by cement, flyash, red mud, phosphorus slag particle and water; Cement 15～20%, flyash 5～10%, red mud 5～10%, phosphorus slag particle 65～70%, admixture 0.1%～0.2%, all the other are water; The amount that adds water is controlled at 80～120mm with denseness and is as the criterion.
2. according to claim 1 with the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, it is characterized in that: described phosphorus slag particle grain size is less than 1.25mm, and water ratio is less than 0.5%.
3. according to claim 1 with the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, it is characterized in that: described cement is ordinary Portland cement or Portland blast, and cement intensity is 32.5 or 42.5.
4. according to claim 1 with the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, it is characterized in that: described flyash is II level or the above commodity flyash of II level.
5. according to claim 1 with the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, it is characterized in that: described red mud is Bayer process or red mud from sintering process, and its fineness is less than 1.18mm.
6. according to claim 1 with the gas concrete dedicated mortar of red mud as the inorganic mineral thickening material, it is characterized in that: described admixture is the composition of water-retaining admixture and retardant, wherein the mass percent of water-retaining admixture is 0.1%～0.15%, and the mass percent of retardant is 0.05%～0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103110731A CN102092991A (en) | 2009-12-09 | 2009-12-09 | Special mortar for aerated concrete using red mud as inorganic mineral thickening agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103110731A CN102092991A (en) | 2009-12-09 | 2009-12-09 | Special mortar for aerated concrete using red mud as inorganic mineral thickening agent |
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| CN102092991A true CN102092991A (en) | 2011-06-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826807A (en) * | 2012-09-17 | 2012-12-19 | 同济大学 | Solid-waste color-matching blue inorganic facing mortar and preparation method thereof |
| CN102826805A (en) * | 2012-09-17 | 2012-12-19 | 同济大学 | Solid-waste color-matching red inorganic facing mortar and preparation method thereof |
| CN105645863A (en) * | 2015-12-31 | 2016-06-08 | 贵州中建建筑科研设计院有限公司 | Ultrafine powdery crack-resistant connection paste for connection of lightweight partition wall panel |
| CN109534761A (en) * | 2018-12-07 | 2019-03-29 | 中国矿业大学 | A kind of red mud, aluminium ash base Unsteamed air-entrapping concrete and preparation method thereof |
| CN110218053A (en) * | 2019-06-19 | 2019-09-10 | 广东建星建造集团有限公司 | A kind of concrete composition |
-
2009
- 2009-12-09 CN CN2009103110731A patent/CN102092991A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826807A (en) * | 2012-09-17 | 2012-12-19 | 同济大学 | Solid-waste color-matching blue inorganic facing mortar and preparation method thereof |
| CN102826805A (en) * | 2012-09-17 | 2012-12-19 | 同济大学 | Solid-waste color-matching red inorganic facing mortar and preparation method thereof |
| CN102826805B (en) * | 2012-09-17 | 2014-01-29 | 同济大学 | Solid-waste color-matching red inorganic facing mortar and preparation method thereof |
| CN102826807B (en) * | 2012-09-17 | 2014-06-25 | 同济大学 | Solid-waste color-matching blue inorganic facing mortar and preparation method thereof |
| CN105645863A (en) * | 2015-12-31 | 2016-06-08 | 贵州中建建筑科研设计院有限公司 | Ultrafine powdery crack-resistant connection paste for connection of lightweight partition wall panel |
| CN109534761A (en) * | 2018-12-07 | 2019-03-29 | 中国矿业大学 | A kind of red mud, aluminium ash base Unsteamed air-entrapping concrete and preparation method thereof |
| CN110218053A (en) * | 2019-06-19 | 2019-09-10 | 广东建星建造集团有限公司 | A kind of concrete composition |
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Application publication date: 20110615 |