CN105967739A - Magnesium foamed building block and preparation technique thereof - Google Patents
Magnesium foamed building block and preparation technique thereof Download PDFInfo
- Publication number
- CN105967739A CN105967739A CN201610328842.9A CN201610328842A CN105967739A CN 105967739 A CN105967739 A CN 105967739A CN 201610328842 A CN201610328842 A CN 201610328842A CN 105967739 A CN105967739 A CN 105967739A
- Authority
- CN
- China
- Prior art keywords
- foaming agent
- building block
- powder
- magnesia
- foamed building
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/105—Magnesium oxide or magnesium carbonate cements
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention relates to a magnesium foamed building block which comprises the following components in percentage by weight: 50-90% of base material and 10-50% of auxiliary material. The base material is fly ash and light-burned powder and/or caustic dolomite powder; and the auxiliary material is a foaming agent. The magnesium foamed building block has the advantages of light weight, thermal insulation, heat shielding, sound insulation, moisture resistance, high strength, high durability, fast setting and the like, and is very suitable to be used as a building block for buildings.
Description
Technical field
The present invention relates to a kind of magnesia foamed building block and preparation technology thereof, belong to the technical field of construction material.
Background technology
The foam concrete of magnesium cement production systD disclosure satisfy that vast agriculture and animal husbandry area is to insulation, the novel green of consumption reduction anti-blown sand
The requirement of walling.Lightweight that magnesium cement foam concrete has except possessing regular-type foam concrete, insulation, heat insulation, insulate against sound, anti-
Outside the technical characterstics such as tide, its intensity, durability, rapid hardening etc. are the most prominent.Compared with common portland cement, magnesium cement is led
Hot coefficient light weight low, high-strength need not sintering, need not be dried, and greatly reduces energy consumption.Estimated at Qinghai production magnesium cement
Foam concrete block is than common every cube of cost savings 20%-50% of non-burning brick total, and lower consumption 30%-50%.Magnesium cement is utilized to steep
Foam mixes mud building blocks and builds body of wall and combine the feature of strength of wall body and insulation, and economic benefit is obvious, market prospect and sending out
Exhibition space is wide.It is therefore proposed that the present invention.
Summary of the invention
For the above-mentioned technical problem of prior art, it is an object of the invention to provide a kind of magnesia foamed building block and preparation thereof
Technique, this magnesia foamed building block is that one has that lightweight, insulation, heat insulation, sound insulation, protection against the tide, high intensity, endurance quality be high, rapid hardening
The building block being integrated.
For reaching above-mentioned purpose, the present invention is achieved by the following technical solutions:
A kind of magnesia foamed building block, including base material and adjuvant, by weight percentage, described base material is 50%-90%, described
Adjuvant is 10%-50%, and described base material is flyash and light burnt powder and/or caustic dolomite powder, and described adjuvant is foaming agent.
As preferably, described foaming agent is inorganic foaming agent or animals and plants composite foamable agent.
As preferably, described inorganic foaming agent is KC-18 type foaming agent, K12 type foaming agent or 126# type foaming agent,
Described animals and plants composite foamable agent is HH-1 type foaming agent, KT type foaming agent or FP-180 type foaming agent.
As preferably, described light burnt powder is by roasting magnesite gained, and described caustic dolomite powder is by dolomite mineral
Roasting gained.
As preferably, when described base material is flyash, light burnt powder and caustic dolomite powder, described flyash, light
The percentage by weight burning powder and caustic dolomite powder is: flyash, light burnt powder and caustic dolomite powder=1:1:2-5.
As preferably, the unit weight of described magnesia foamed building block is 0.25-0.5g/cm3。
The preparation technology of a kind of magnesia foamed building block, comprises the following steps:
(1) light burnt powder or caustic dolomite powder are dissolved,
Or by percentage by weight mixing certain to light burnt powder and caustic dolomite powder；
(2) flyash is added water dissolution, and be configured to flyash solution；
(3) solution in the material of step (1) and (2) is mixed and stirred for, adds foaming agent and carry out secondary stirring, form base
Material；
(4) by blank molding, solidification, the demoulding the maintenance in step (3), magnesia composite material finished product is prepared.
Beneficial effects of the present invention is as follows:
The magnesia foamed building block of the present invention, has that lightweight, insulation, heat insulation, sound insulation, protection against the tide, high intensity, endurance quality be high and rapid hardening
Etc. advantage, it is highly suitable as building block.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention；
Fig. 2 is dissimilar magnesia foam concrete block mean intensity
Fig. 3 is the average size yeast production line of different weight percentage content sample；
Fig. 4 is the value of bulk density curve of different weight percentage content sample；
Fig. 5 is different unit weight scope average pressure curves；
Fig. 6 is sample pressure scatter diagram；
Fig. 7 is different base material proportioning pressure meansigma methodss.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to
This.
The magnesia foamed building block of the present invention, including base material and adjuvant, by weight percentage, base material is 50%-90%, adjuvant is
10%-50%, base material is flyash and light burnt powder and/or caustic dolomite powder, and described adjuvant is foaming agent.
When base material is flyash, light burnt powder and caustic dolomite powder, described flyash, light burnt powder and caustic dolomite
The percentage by weight of powder is: flyash, light burnt powder and caustic dolomite powder=1:1:2-5.
Wherein, foaming agent is inorganic foaming agent or animals and plants composite foamable agent.Inorganic foaming agent be KC-18 type foaming agent,
K12 type foaming agent or 126# type foaming agent, animals and plants composite foamable agent is HH-1 type foaming agent, KT type foaming agent or FP-180 type
Foaming agent.
Light burnt powder is by roasting magnesite gained, and described caustic dolomite powder is by dolomite mineral roasting gained.
The unit weight of the magnesia foamed building block of the present invention is 0.25-0.5g/cm3.
Foaming agent Selection experiment
State's inner concrete foaming agent mainly has: rosin acid soaps foaming agent, metallic aluminium powder foaming agent, vegetable protein foaming agent,
Animal protein foaming agent, resin soaps foaming agent, hydrolysis blood glue foaming agent, mahogany acid aluminum foaming agent etc..The present invention selects good
The good foaming agent that can be used in magnesium cement cementitious material, makes magnesia foam concrete block according to dynamic fit than experiment,
For agriculture (herding) people's house, greenhouse and the construction material of animal house.
The present invention selects three kinds of inorganic foaming agents, three kinds of animals and plants composite foamable agents as test foaming agent, Qi Zhongwu
Machine foaming agent model is respectively KC-18 type, K12 type and 126# type foaming agent, and animals and plants composite foamable agent model is respectively HH-1
Type, KT type and FP-180 type foaming agent.Inorganic foaming agent uses the method for chemistry reflection to generate magnesium gelatinous material bubble, dynamic
Plant composite type foaming agent uses physics to generate magnesium gelatinous material bubble.Corresponding same magnesial gelatinized match ratio slurry, often
Plant foaming agent and make 9 pieces of samples respectively, and unit weight is controlled in 0.25-0.35 g/cm3Between, the most inorganic foamed magnesia bubble
Foam concrete building block sample surface pores is connected with each other, and upper strata is soft, and lower floor's bonding in bulk, homogeneous property is poor.Animals and plants
Composite foamed magnesia foam concrete block sample sample outward appearance pore arrangement is uniformly, it is easy to molding and make little unit weight sample.
Surveying its intensity, data show as shown in table 1, use inorganic foamed magnesia foam concrete block mean intensity relatively animals and plants multiple
The magnesia foam concrete block mean intensity closing foaming is low, as shown in Figure 2.
Through preliminary experiment analysis, animals and plants composite foamable agent relatively inorganic foaming agent is more suitable for magnesium gelatinous material,
Generating during adding bubble less to the structural deterioration of gel, the foamed building block produced is stable.Therefore present invention choosing
Select KT type foaming agent for the test of magnesial foamed building block and production.
Table 1 dissimilar foaming agent test performance
。
The unit weight test of magnesia foamed building block
The factor affecting magnesia foamed building block performance is a lot, and the performance of raw material quality, mix-design and foaming agent is all main
Want factor, the most especially based on the performance of foaming agent.During preparing magnesia foamed building block, the addition of foaming agent is to determine to build
Bulk strength and the deciding factor of weight, therefore according to above-mentioned selected blowing agent type (KT type) analysis of experiments magnesium gelatinous material
The middle scope adding foaming dosage and parameter.
Test is with pure magnesium gelatinous material as base material, and the foaming agent weighing certain mass by the mode of physics is completely formed bubble
Foam, in pure magnesium gelatinous material, (foam quality accounts for the hundred of solid base to the foam of addition 10%, 20%, 30%, 40%, 50%
Proportion by subtraction), after the test sample demoulding, the unit weight of 7 days is as shown in table 2).Test result shows, when foaming agent addition≤30%, and magnesium
The trend of the unit weight linear decrease of matter foamed building block sample, unit weight is directly proportional to foaming agent addition, as it is shown on figure 3, test
Process can be good at the relation controlling foaming agent addition with unit weight.When foaming agent addition >=30%, foaming agent addition
Being not sufficiently stable with the relation of unit weight, this is owing to along with the increase of foaming dosage, the moisture added in Binder Materials increases the most accordingly
Many, in testing and producing, wayward foaming agent is converted to the condition of moisture.
Table 2 foaming agent quality/base material quality test
From tables of data 2 and Fig. 3, when making unit weight scope >=0.35g/cm3Magnesia foamed building block time, in aforementioned manners
(foaming agent quality/base material quality) is easily achieved when producing, and produces equipment requirements the most relatively easy.And when make 0.25～
0.35g/cm3During the magnesia foamed building block of low unit weight range intervals, the method is the most accurate.Producing 0.25～0.35g/
cm3During the magnesia foamed building block of low unit weight range intervals, can accurate control by the method for (foaming agent volume/base material quality)
Unit weight processed.As shown in table 3 and Fig. 4, along with the increase of foaming agent volume addition is successively decreased accordingly, unit weight shows within the specific limits
More stable, and now produce and be relatively easy to control.Therefore, the present invention produces unit weight scope >=0.35 g/cm3Magnesia foamed building block
Shi Xuanyong foaming agent quality/base material mass method, produces 0.25～0.35g/cm3During the magnesia foamed building block of low unit weight range intervals
Select foaming agent volume/base material mass method.
Table 3 foaming agent volume/base material quality test
The unit weight of the most magnesia foamed building block and pressure analysis
According to data (table 4 and table 5), take each 0.05g/cm3The meansigma methods of unit weight interval sample pressure.Unit weight is understood by data
0.25-0.3g/cm3Its resistance to compression interval is about 0.6～0.8MPa, more than Code for design of masonry strucres (MU10, M2.5)
0.5MPa.As shown in Figure 5 when unit weight is 0.2～0.35g/cm3During scope, unit weight often increases 0.05g/cm3, corresponding pressure resistance
Degree increases about about 0.5MPa；When unit weight is more than 0.35g/cm3During scope, resistance to compression phase when unit weight often increases by 0.05 order of magnitude
About about 1.0MPa should be increased.The most in process of production can be by the concept of unit weight scope the resistance to compression controlling sample accurately
Strength range.
Make magnesia foamed building block using the proportioning of caustic dolomite powder and light burnt powder different proportion as base material, analyze it not
With the pressure distributed points of proportioning, as shown in Figure 6, sample distribution ratio in the range of each unit weight is more uniform, and 0.5～2Mpa
Sample in pressure range is concentrated the most, illustrates that the magnesia foamed building block of different mixture ratio is easily shaped in this pressure range,
It is readily produced.
Take various proportioning sample in the range of certain unit weight (0.25～0.4g/cm3) meansigma methods of pressure does scatter diagram (figure
7), the base material of magnesia foamed building block is that the sample pressure of (caustic dolomite powder: light burnt powder)=2:1 is the highest, (caustic dolomite powder:
Light burnt powder)=5:1 time comprcssive strength minimum (partially below 0.5MPa), (caustic dolomite powder: light burnt powder)=3:1 and (causticity is white
Marble dust: light burnt powder) 4:1 time the unit weight of sample, comprcssive strength and outward appearance the most prominent, the foam block that makes with pure light burnt powder
Character be more or less the same.Therefore, according to experiment and material cost-effectiveness requirement, the present invention produce the base material of magnesia foamed building block with
(caustic dolomite powder: light burnt powder)=3:1 and (caustic dolomite powder: light burnt powder) 4:1 is main.
Table 4 base material proportioning test (foaming agent quality/base material quality)
。
Table 5 base material proportioning test (foaming agent volume/base material quality)
。
Mix Ratio Test and result
According to standard collective drawings and design specification, it is different that EXPERIMENTAL DESIGN of the present invention meets agriculture (herding) house, agricultural booth and animal house
The magnesia composite foam block material of specification, by optimized mix-proportion scheme, economically and standard criterion consider (masonry tie
The calculating parameter of Section of 3.2 masonry of structure design specification GB50003-2011), it is total to the EXPERIMENTAL DESIGN magnesium of five kinds of different sizes
Matter composite foam block material, strength grade is >=2.31MPa(MU15 respectively, M10), >=2.07MPa(MU15, M7.5), >=
1.69MPa(MU10, M7.5),>=1.50MPa(MU10, M5.0),<1.3MPa(MU10, M2.5).
Magnesia composite foam block material selects light burnt powder, caustic dolomite powder, flyash and foaming agent, carries out match ratio
The method following the tracks of contrast test is carried out, and tests and determine the match ratio of five kinds of specifications (specification 7 × 7 × 7cm), Qi Zhongpei respectively
Composition and division in a proportion is respectively (caustic dolomite powder: light burnt powder): flyash=(3:1): 1 and (caustic dolomite powder: light burnt powder): powder
Coal ash=(4:1): 1, as shown in table 6-table 10.
As it is shown in figure 1, the preparation technology of the magnesia foamed building block of the present invention, comprise the following steps:
(1) light burnt powder or caustic dolomite powder are dissolved,
Or by percentage by weight mixing certain to light burnt powder and caustic dolomite powder；
(2) flyash is added water dissolution, and be configured to flyash solution；
(3) solution in the material of step (1) and (2) is mixed and stirred for, adds foaming agent and carry out secondary stirring, form base
Material；
(4) by blank molding, solidification, the demoulding the maintenance in step (3), magnesia composite material finished product is prepared.
Above-described embodiment is only used for illustrating the inventive concept of the present invention, rather than the restriction to rights protection of the present invention,
All changes utilizing this design that the present invention carries out unsubstantiality, all should fall into protection scope of the present invention.
Claims (7)
1. a magnesia foamed building block, it is characterised in that: including base material and adjuvant, by weight percentage, described base material is
50%-90%, described adjuvant are 10%-50%, and described base material is flyash and light burnt powder and/or caustic dolomite powder, described
Adjuvant be foaming agent.
Magnesia foamed building block the most as claimed in claim 1, it is characterised in that: described foaming agent is inorganic foaming agent or dynamic plants
Thing composite foamable agent.
Magnesia foamed building block the most as claimed in claim 2, it is characterised in that: described inorganic foaming agent is the foaming of KC-18 type
Agent, K12 type foaming agent or 126# type foaming agent, described animals and plants composite foamable agent is HH-1 type foaming agent, KT type foaming agent
Or FP-180 type foaming agent.
Magnesia foamed building block the most as claimed in claim 1, it is characterised in that: described light burnt powder by roasting magnesite gained,
Described caustic dolomite powder is by dolomite mineral roasting gained.
Magnesia foamed building block the most as claimed in claim 1, it is characterised in that: described base material is flyash, light burnt powder and severe
During property dolomite dust, the percentage by weight of described flyash, light burnt powder and caustic dolomite powder is: flyash, light burnt powder and
Caustic dolomite powder=1:1:2-5.
Magnesia foamed building block the most as claimed in claim 1, it is characterised in that: the unit weight of described magnesia foamed building block is 0.25-
0.5g/cm3。
7. the preparation technology of a magnesia foamed building block, it is characterised in that comprise the following steps:
(1) light burnt powder or caustic dolomite powder are dissolved,
Or by percentage by weight mixing certain to light burnt powder and caustic dolomite powder；
(2) flyash is added water dissolution, and be configured to flyash solution；
(3) solution in the material of step (1) and (2) is mixed and stirred for, adds foaming agent and carry out secondary stirring, form base
Material；
(4) by blank molding, solidification, the demoulding the maintenance in step (3), magnesia composite material finished product is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328842.9A CN105967739A (en) | 2016-05-18 | 2016-05-18 | Magnesium foamed building block and preparation technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328842.9A CN105967739A (en) | 2016-05-18 | 2016-05-18 | Magnesium foamed building block and preparation technique thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105967739A true CN105967739A (en) | 2016-09-28 |
Family
ID=56955284
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610328842.9A Pending CN105967739A (en) | 2016-05-18 | 2016-05-18 | Magnesium foamed building block and preparation technique thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115772036A (en) * | 2022-12-20 | 2023-03-10 | 鞍山钢铁冶金炉材科技有限公司 | Crack-reducing magnesium tundish prefabricated part and preparation method and application thereof |
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|---|---|---|---|---|
| CN1118340A (en) * | 1995-05-29 | 1996-03-13 | 邓昌五 | Strengthened lightweight aerated block and its manufacture |
| CN102101787A (en) * | 2010-11-26 | 2011-06-22 | 中国科学院青海盐湖研究所 | Magnesium cement foam material |
| CN102491713A (en) * | 2011-11-22 | 2012-06-13 | 丁立平 | Wall material made of mine tailings and coal ash and manufacturing method thereof |
| CN102951878A (en) * | 2012-11-12 | 2013-03-06 | 郑小东 | Lightweight concrete exterior wall insulation building block and production method thereof |
| CN105347840A (en) * | 2015-12-03 | 2016-02-24 | 中国科学院青海盐湖研究所 | Economic wall foamed block material and preparation method thereof |
-
2016
- 2016-05-18 CN CN201610328842.9A patent/CN105967739A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118340A (en) * | 1995-05-29 | 1996-03-13 | 邓昌五 | Strengthened lightweight aerated block and its manufacture |
| CN102101787A (en) * | 2010-11-26 | 2011-06-22 | 中国科学院青海盐湖研究所 | Magnesium cement foam material |
| CN102491713A (en) * | 2011-11-22 | 2012-06-13 | 丁立平 | Wall material made of mine tailings and coal ash and manufacturing method thereof |
| CN102951878A (en) * | 2012-11-12 | 2013-03-06 | 郑小东 | Lightweight concrete exterior wall insulation building block and production method thereof |
| CN105347840A (en) * | 2015-12-03 | 2016-02-24 | 中国科学院青海盐湖研究所 | Economic wall foamed block material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115772036A (en) * | 2022-12-20 | 2023-03-10 | 鞍山钢铁冶金炉材科技有限公司 | Crack-reducing magnesium tundish prefabricated part and preparation method and application thereof |
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| CB02 | Change of applicant information |
Address after: 810008 No. 18 Xinning Road, Chengxi District, Xining City, Qinghai Province Applicant after: Qinghai Yanhu Inst., Chinese Academy of Sciences Applicant after: Qinghai construction and building materials science research institute limited liability company Address before: 810008 No. 18 Xinning Road, Chengxi District, Xining City, Qinghai Province Applicant before: Qinghai Yanhu Inst., Chinese Academy of Sciences Applicant before: QINGHAI BUILDING AND BUILDING MATERIAL SCIENCES RESEARCH INSTITUTE |
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Application publication date: 20160928 |
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