CN105174755A - Red stucco finish prepared by red mud-based alkali-activated cementing material - Google Patents
Red stucco finish prepared by red mud-based alkali-activated cementing material Download PDFInfo
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Abstract
The invention relates to red stucco finish prepared by a red mud-based alkali-activated cementing material. The red stucco finish is formed by the red mud-based alkali-activated cementing material, quartz sand, latex powder, cellulose ether and hydrophobic rubber powder, wherein the red mud-based alkali-activated cementing material is a powder material formed by 60 to 70 percent of red mud, 30 percent of slag powder and 0 to10 percent of metakaolin; the powder material is activated by 3 to 5 percent of water glass; the red mud is sintered red mud, the fineness of the red mud is 45 mum, and the screen residue of a square hole sieve is less than or equal to 20.0 percent; the specific surface area of the slag powder is more than or equal to 400m<2>/kg, and the active grade is not lower than S95; the activity index of the metakaolin is larger than or equal to 100; the modulus of the water glass is 1.6 to 2.2; the fineness of the quartz sand is 30 to 60 meshes, the SiO2 is larger than or equal to 98.8 percent, and the powder content is less than or equal to 0.2 percent; the cement-sand ratio of mortar is set to be 1/4; the latex powder is water-soluble redispersible powder, the solid content is larger than or equal to 98 percent, and the dose is less than or equal to 2 percent; the dose of the cellulose ether is less than or equal to 0.2 percent; the dose of the hydrophobic rubber powder is less than or equal to 0.2 percent. The red stucco finish is quick in intensity development, good in durability, strong in adhesive strength, and good in alkali efforescence resistance performance.
Description
Technical field
The present invention relates to construction work gelling material, relating generally to red mud is alkali-activated carbonatite gelling material prepared by main raw material and the decoration of exterior wall facing mortar using this gelling material to prepare.
Background technology
Alkali-activated carbonatite gelling material is a kind of is main raw materials, the novel gelled material under the effect of alkali with the hydraulicity with sal waste.This material because preparation process energy consumption is low, it is low to discharge, and can provide the performance similar to silicate cement based cementitious material, and it is considered to a kind of low-carbon (LC) gelling material.At present, the starting material being suitable for this material mainly contain red mud, flyash, slag the like waste.
Facing mortar is a kind of material for construction wall surface decoration be made up of inorganic coagulation material, filler, additive and (or) aggregate.This material is specially adapted to the brushing of the special-shaped metope such as cylinder, arc, and can require according to user and change color, have that Jian is complete, cracking resistance, ventilative, hydrophobic, decorate advantage in one, extensively replaced coating and ceramic tile to be applied to the inner, external wall decoration of buildings in developed country.At present, the inorganic coagulation material of facing mortar is mainly white cement.
Facing mortar requires, temp. variation resistant fast without based cementitious material strength development and water-tolerant, bonding force by force, and alkali-activated carbonatite gelling material exactly has above-mentioned performance.Correlative study shows, alkali-activated carbonatite gelling material 6 hours intensity can more than 20.0MPa, experience 300 freeze-thaw cycle (-20 DEG C ~ 20 DEG C) afterwards mass loss be less than 1%, bonding strength is greater than 2.0MPa.Therefore, play the performance advantage of alkali-activated carbonatite gelling material, utilize it to prepare facing mortar and promote making the performance of product further.
It is to be noted in addition, red mud base alkali-activated carbonatite gelling material true qualities are red, and a large amount of facing mortar for exterior wall mostly is red at present, that is preparing facing mortar using red mud base alkali-activated carbonatite as gelling material does not need toning just can meet present product requirement, and this reduces this product cost undoubtedly.
To sum up state institute, take red mud as the bonding component of the alkali-activated carbonatite gelling material prepared of raw material as facing mortar, will the facing mortar preparation technology high with price, white cement that is that need high-temperature calcination is main bonding component be broken through.This breakthrough not only has the effect of utilization of waste as resource, energy-saving and emission-reduction, but also can make mortar performance lifting, cost reduction.
Through retrieval, have no the Patents preparing facing mortar for inorganic gel component with alkali-activated carbonatite gelling material open, more have no that to prepare the patent of red facing mortar with the red mud base alkali-activated carbonatite gelling material of redness open.
Summary of the invention
The object of the invention is to study red facing mortar prepared by a kind of red mud base alkali-activated carbonatite gelling material, based on the fact that red mud takes on a red color, the performance advantage fast by the strength development of red mud base alkali-activated carbonatite gelling material, good endurance, bonding force are strong, realizes the preparation of high quality red facing mortar.
The invention provides a kind of red facing mortar being inorganic gel component with red mud base alkali-activated carbonatite gelling material, be made up of red mud base alkali-activated carbonatite gelling material, quartz sand, latex powder, ether of cellulose, hydrophobic rubber powder.Wherein, described red mud base alkali-activated carbonatite gelling material forms powder by 60 ~ 70% red mud+30% slag powders+0 ~ 10% metakaolins, this powder by 3 ~ 5% water glass (with Na
2o counts, and accounts for the mass percent of powder, lower same) excite.This gelling material at water cement ratio 0.5, cement mortar rate 1/3 condition compacted under, maintenance 6 hours under standard conditions (20 DEG C, 95%RH), ultimate compression strength is greater than 20.0MPa; Its Mortar'S Flowability is 170 ± 5mm; Described red mud is red mud from sintering process, and its fineness is that 45 μm of square hole sieves tail over and are not more than 20.0%; The specific surface area of described slag powders is not less than 400m
2/ kg, Activity Rank is not less than S95; The activity index of described metakaolin is not less than 100; The modulus of described liquid soluble glass, not higher than 2.2, is not less than 1.6; The fineness of described quartz sand is 30 ~ 60 orders, SiO
2content is not less than 98.8%, and powder containing quantity is not higher than 0.2%.Facing mortar cement mortar rate is set as 1/4; Described latex powder is water-soluble redispersible powder, can be the multipolymer of ethylene/vinyl acetate, the multipolymer of vinyl acetate between to for plastic/tertiary monocarboxylic acid ethene and acrylic acid multipolymer, its solid content is not less than 98%, other all performances meet " redispersible latex powder " (GB/T29594-2013) requirement, and consumption is not more than 2%; Described ether of cellulose can be the etherate of methylcellulose gum, Vltra tears, Natvosol, its on the impact of gelling material time of coagulation be no more than ± 10 minutes, consumption is not more than 0.2%; Described hydrophobic rubber powder is that its consumption is not more than 0.2% by the emulsion modified a kind of hydrophobic type polymers function rubber powder of peo resin, organosilicon Dichlorodiphenyl Acetate ethylene/vinyl; The all commercially available acquisition of metakaolin, liquid soluble glass, quartz sand, latex powder, ether of cellulose, hydrophobic rubber powder.
The preparation method of red facing mortar of the present invention, relates to following steps:
1) grinding: by oven dry red mud from sintering process and slag milling to setting fineness.
2) homogenizing: according to setting ratio, red mud, slag, metakaolin are mixed, obtains composite granule.
3) weighing and mix: according to setting consumption, taking latex powder, ether of cellulose and hydrophobic rubber powder, even with composite granule mix, obtain facing mortar powder.
4) mix: add a certain amount of liquid soluble glass in powder, stir, obtain facing mortar.The water that mixing mortar needs joins in liquid soluble glass in advance, and stirs.
Wherein, in step 3) in can add the additive of other colors, thus change mortar color.
In step 3) in can add other modified components such as fiber, thus improve the performance such as splitting resistance of mortar.
Adopt technique scheme, the facing mortar excellent property that empirical tests obtains with preparation method of the present invention, can replace coating and ceramic tile for decoration of exterior wall.Result of implementation shows, facing mortar 240 minutes water-intake rates are less than 2.0%, and ultimate compression strength is greater than 25.0MPa, and tensile bond intensity is greater than 1.75MPa, and weathering resistance reaches 1 grade.
The present invention, using the red mud base alkali-activated carbonatite gelling material of aobvious redness as inorganic gel component, prepares red facing mortar, has both achieved the recycling of red mud, played again the performance advantage of alkali-activated carbonatite gelling material, and improve facing mortar performance.
The present invention's inorganic gel component used is red mud base alkali-activated carbonatite gelling material.This material as cementing component, each particle in bonding mortar, and bonding body of wall.According to the proportioning of " 60 ~ 70% red mud+30% slag powders+0 ~ 10% metakaolin ", at 3 ~ 5% water glass (with Na
2o counts, and accounts for the mass percent of powder) under shooting conditions, this gelling material has high-early-strength feature, and its 6 hours ultimate compression strength are greater than 20.0MPa.If make gelling material not possess high-early-strength performance because of red mud composition variations, following measure can be taked:
(1) red mud, slag powders, metakaolin and water glass ratio is adjusted;
(2) add lime as short solidifying, enhancement component, but addition is too much unsuitable, otherwise too short and impact construction gelling material time of coagulation.In the present invention, the volume of lime is no more than 5% (accounting for the mass percent of composite granule).
(3) the old red mud of thermal activation is added as short solidifying, enhancement component.The old red mud of thermal activation is store up old red mud for up to the several years through the red mud of 700 DEG C of calcinations after 1 hour, and its volume is no more than 10% (accounting for the mass percent of composite granule), otherwise gelling material condensation is too fast.
The present invention's red mud used is red mud from sintering process.This red mud takes on a red color, and its main mineral constituent is Dicalcium Phosphate (Feed Grade).This red mud is for newly to discharge red mud, and its gelation activity is higher, only needs to dry, grinding to a 45 μm square hole sieve tails over and be less than 20.0% and namely can be used as gelling material and prepare starting material.Result of implementation of the present invention shows, the alkali-activated carbonatite gelling material adopting this new red mud to prepare is under the short solidifying hardening effect of slag powders, and its condensation is rapid, strength development is fast.Assembly time is exceeded to the old red mud of several years, its active mineral aquation changes hydrated calcium silicate into, thus makes red mud lose gelation activity.Result of implementation of the present invention shows, adopts alkali-activated carbonatite gelling material prepared by this old red mud, although sample can normal gel, early strength is very low, and its 3 days ultimate compression strength are no more than 10.0MPa.In order to the old red mud of reactivate, the method that Low Temperature Thermal activates can be adopted: 700 DEG C of calcinations 1 hour.Result of implementation of the present invention shows, activates old red mud and has more significant gelation activity than new red mud, and gelling material condensation is more rapid, but the former causes gelling material water requirement to become large because of porous.In order to utilize the active high advantage of the old red mud of activation, and avoid its porous and affect the inferior position of slurry serviceability, the present invention proposes to activate old red mud as short solidifying enhancement component.Result of implementation shows, mix the old red mud of 10% activation and replace lime as short solidifying, enhancement component, 3 days, 28 days ultimate compression strength of gelling material improve 10.0MPa and 5.0MPa respectively.
The present invention's slag powders used is obtained by granular water-granulated slag grinding, and its specific surface area is greater than 400m
2/ kg, it plays short solidifying enhancement.Result of implementation of the present invention shows, only prepare alkali-activated carbonatite gelling material with red mud, water glass two component, it condenses slowly at normal temperatures, and strength development is slow.In order to promote the condensation of above-mentioned gelling material, curing temperature must be improved.Such as, curing temperature is increased to 60 DEG C from normal temperature (20 DEG C), and namely gelling material condenses in several tens minutes, and 6 hours intensity can reach more than 25.0MPa.But the construction of facing mortar and environment for use are physical environment, High Temperature Curing measure can not be taked, therefore this gelling material is not suitable for the inorganic gel component of facing mortar.In above-mentioned gelling material, mix a certain amount of slag powders, its setting and harden behavior is by different.Result of implementation shows, mixes 30% slag powders, and gelling material can be condensed in 1 hour, and 6 hours intensity can reach more than 20.0MPa.
The activity index of the present invention's metakaolin used is greater than 100, and it mainly plays the dual function of active ingredient and micro aggregate effect.At normal temperatures, the activity of metakaolin is not as good as red mud and slag, and its reaction is comparatively slow, and what therefore metakaolin played is long-time effect.In early days, red mud and slag participate in alkali-activated carbonatite reaction, generate C-S-H gel and (or) the C-A-S-H gel of low calcium silicon ratio.Although this gel has certain Na
+binding ability, but Na
+easy migration, and then cause mortar to whiten.When mixing metakaolin, the accumulation of salt in the surface soil of mortar is effectively suppressed, this is because the superfine metakaolin of particle not only serves as micro-aggregate and closely knit mortar, and its reaction product is N-A-S-H gel, thus realizes Na
+bonding.
The present invention's alkali-activator used is liquid soluble glass, and its quality meets the requirement of " industrial metasilicate " (GB/T4209-2008), and its modulus is 1.6 to 2.2, and solid content is 35.0 ~ 50.0%.
The present invention's latex powder used plays and strengthens bonding force effect, to improve the viscosifying power of facing mortar; Ether of cellulose used plays thickening, water retention, strengthens the anti-accumulation of salt in the surface soil ability of facing mortar; Hydrophobic rubber powder used plays hydrophobic interaction, effectively to improve the accumulation of salt in the surface soil performance of facing mortar.
Embodiment
Embodiment 1
According to proportioning, " 70% red mud+30% slag powders+5% water glass is (with Na
2o counts) " prepare red mud base alkali-activated carbonatite gelling material.Adopt 30 ~ 60 object quartz sands to be aggregate, cement mortar rate 1:4, water cement ratio is determined according to the degree of mobilization of fresh mortar, and the degree of mobilization of all mortars all controls at 170 ± 5mm.The physical and mechanical property test of mortar is carried out according to the related request in JC/T1024-2007 " wall facing mortar ".
Known by table 1, using red mud base alkali-activated carbonatite gelling material as gelling material, prepared facing mortar has excellent strength property and good contaminated resistance, but its alkali burnout resistance can be poor.As everyone knows, alkali burnout resistance can be the key property determining facing mortar quality, is therefore necessary for main performance assessment criteria, to carry out the performance optimization of red mud base facing mortar with the alkali burnout resistance of mortar.
Table 1
Embodiment 2
In the present embodiment, gelling material powder used by 70% red mud and 30% slag powders component, respectively with 1%, 2%, 3%, 4%, 5% water glass (with Na
2o counts) prepare red mud base alkali-activated carbonatite gelling material as exciting agent.Adopt 30 ~ 60 object quartz sands to be aggregate, cement mortar rate 1:4, water cement ratio is determined according to the degree of mobilization of fresh mortar, and the degree of mobilization of all mortars all controls at 170 ± 5mm.The physical and mechanical property test of mortar is carried out according to the related request in JC/T1024-2007 " wall facing mortar ".
In white cement cement-based finishing mortar, the Ca (OH) produced in cement hydration process
2along with H in mortar drying process
2o migrates to mortar surface, and with the CO in air
2react and generate CaCO
3, thus present accumulation of salt in the surface soil phenomenon at mortar surface.Its gelling material of facing mortar of the present invention is alkali-activated carbonatite gelling material, its produce accumulation of salt in the surface soil phenomenon mainly in drying process the water soluble alkali of its inside with H
2o moisture evaporation migrates to that material surface causes.This part alkali mainly comes from exciting agent, and exciting agent is one of principal element determining alkali-activated carbonatite gelling material performance.Therefore, in alkali-activated carbonatite gelling material, the content of alkali and the compactness extent of material will can play vital effect to its alkali burnout resistance.When keeping the parameter constants such as red mud consumption, cement mortar rate, the impact of exciting agent volume on performances such as facing mortar intensity and the anti-accumulation of salt in the surface soil is as shown in table 2.
Table 2
Known by table 2, exciting agent volume has significant impact for the performance of mortar: along with the reduction gradually of exciting agent volume, the strength property of mortar presents the trend sharply reduced; When exciting agent volume lower than 3.0% time, although the ultimate compression strength of mortar also meets the requirement of JC/T1024-2007, its folding strength and cohesive strength all do not meet the demands.In addition, when exciting agent volume is reduced to 3.0% gradually by 5.0%, the alkali burnout resistance of mortar can have also been obtained improvement to a certain degree.This is due to the reduction along with exciting agent volume, and in mortar, the total amount of alkali also decreases, therefore can with H in drying process
2the quantity that O migrates to the water soluble alkali of mortar surface also decreases, thus the alkali burnout resistance showing as mortar can effectively be improved.Along with exciting agent volume to carry out a step-down low, the accumulation of salt in the surface soil of mortar becomes again serious.This is because exciting agent volume is too low, and the material level of response such as the red mud in gelling material are inadequate, and therefore mortar internal void is more, and compact structure degree is lower, and so in drying process, the alkali of mortar inside is easier with H
2o moves out.
According to the present embodiment, only change alkali-activator consumption and be also not enough to the alkali burnout resistance energy significantly improving mortar, also need to take other measures.
Embodiment 3
Redispersable latex powder has the characteristic of high cohesive force, therefore effectively can improve the performance such as adhesive capacity, folding strength of mortar, thus the flexility of mortar is effectively improved.
In the present embodiment, according to proportioning, " 70% red mud+30% slag powders+3% water glass is (with Na
2o counts) " prepare red mud base alkali-activated carbonatite gelling material.Adopt 30 ~ 60 object quartz sands to be aggregate, cement mortar rate 1:4, water cement ratio is determined according to the degree of mobilization of fresh mortar, and the degree of mobilization of all mortars all controls at 170 ± 5mm.The mass percent that latex powder volume accounts for the materials such as red mud, slag powders, quartz sand calculates.The physical and mechanical property test of mortar is carried out according to the related request in JC/T1024-2007 " wall facing mortar ".
The impact of latex powder on facing mortar performance is as shown in table 3.
Table 3
Note: latex powder volume is with the mass percent of dry powder (red mud+slag powders+quartz sand).
Known by table 3, mix strength property and alkali burnout resistance energy that latex powder obviously can improve facing mortar.When latex powder volume increases to 2.0% gradually by 1%, the ultimate compression strength of mortar remains unchanged substantially, but folding strength and cohesive strength have obvious lifting.In addition, the alkali burnout resistance of mortar can have also been obtained obvious improvement.This is because latex powder is again dissolved, is disperseed in mortar whipping process, form polymer emulsion, when after facing mortar aquation, dehydration, these polymer emulsions form one layer of polymeric cubic network film, be filled in the micro-pore of mortar, improve the pore space structure of mortar, thus the strength property of mortar and alkali burnout resistance can effectively be improved.When latex powder volume continues to increase to 3.0% by 2.0%, all can there is reduction to a certain degree in the strength property of facing mortar and alkali burnout resistance.This is because latex powder has micro-air-entraining effect, can introduce a large amount of bubbles, the porosity of mortar is increased, thus cause the performance of mortar to reduce when its volume is excessive in mortar.Therefore, the volume of latex powder should be no more than 2.0%.
Embodiment 4
According to proportioning, " 70% red mud+30% slag powders+3% water glass is (with Na
2o counts) " prepare red mud base alkali-activated carbonatite gelling material.Adopt 30 ~ 60 object quartz sands to be aggregate, cement mortar rate 1:4, water cement ratio is determined according to the degree of mobilization of fresh mortar, and the degree of mobilization of all mortars all controls at 170 ± 5mm.The mass percent that ether of cellulose volume accounts for the material such as red mud, slag powders quartz sand calculates.The physical and mechanical property test of mortar is carried out according to the related request in JC/T1024-2007 " wall facing mortar ".
Mortar is H in drying process
2the evaporation of O is the one of the main reasons causing the reduction of mortar strength performance and the accumulation of salt in the surface soil.Compared with Portland cement base facing mortar, dehydration is more remarkable to the performance impact of alkali-activated carbonatite gelling material, and therefore the performance of water conservation to alkali-activated carbonatite gelling material is even more important.Ether of cellulose has the effect of thickening, water conservation, is a kind of water-holding agent be most widely used in dry-mixed mortar.
The impact of ether of cellulose on facing mortar performance is as shown in table 4.
Table 4
Note: ether of cellulose volume is with the mass percent of dry powder (red mud+slag powders+quartz sand).
Known by table 4, after mixing ether of cellulose, along with the increase of ether of cellulose volume, the strength property of mortar and alkali burnout resistance can improve gradually.But find in experimentation, when ether of cellulose volume is more than 0.20%, due to the thickening power of ether of cellulose, slurry consistency is comparatively large, is unfavorable for constructing operation.Therefore, bonding strength performance and workability, the ether of cellulose volume in facing mortar should be advisable to be no more than 0.20%.
Embodiment 5
According to proportioning, " 70% red mud+30% slag powders+3% water glass is (with Na
2o counts) " prepare red mud base alkali-activated carbonatite gelling material.Adopt 30 ~ 60 object quartz sands to be aggregate, cement mortar rate 1:4, water cement ratio is determined according to the degree of mobilization of fresh mortar, and the degree of mobilization of all mortars all controls at 170 ± 5mm.The mass percent that hydrophobic rubber powder volume accounts for the material such as red mud, slag powders quartz sand calculates.The physical and mechanical property test of mortar is carried out according to the related request in JC/T1024-2007 " wall facing mortar ".
When hydrophobic rubber powder is used in sand-cement slurry, adsorbable in cement particle surface, make mortar have hydrophobic effect, therefore effectively can improve the accumulation of salt in the surface soil performance of mortar.
The impact of hydrophobic rubber powder on red mud base facing mortar performance is as shown in table 5.
Table 5
Note: hydrophobic rubber powder volume is with the mass percent of dry powder (red mud+slag powders+quartz sand).
Known by table 5, mixing the strength property of hydrophobic rubber powder on facing mortar does not almost affect, but improves significantly to the alkali burnout resistance energy tool of mortar.This is because hydrophobic rubber powder is adsorbed in mortar hole, and with the CO in air
2have an effect, autohemagglutination forms one deck silicone resin waterproof membrane, plays good water resistant penetrating quality.As can be seen from the table, when hydrophobic rubber powder volume is more than 0.15%, the mortar not accumulation of salt in the surface soil substantially.Therefore, consider the price of hydrophobic rubber powder and the improvement effect to mortar alkali burnout resistance energy, the volume of hydrophobic rubber powder should be no more than 0.20%.
Embodiment 6
In previous embodiment mortar alkali burnout resistance can be improved significantly, but the individual sample still obvious accumulation of salt in the surface soil.In order to suppress the stripping of alkali in mortar further, interpolation is taked to be no more than 25% metakaolin as alkali leaching retention component.
In this embodiment, gelling material powder used is made up of red mud, metakaolin, slag powders, and the volume of slag accounts for 30% of powder, and red mud and metakaolin account for 70% altogether.Adopt 3% water glass (with Na
2o counts) as exciting agent, 30 ~ 60 object quartz sands are aggregate, cement mortar rate 1:4, and water cement ratio is determined according to the degree of mobilization of fresh mortar, the degree of mobilization of all mortars all controls at 170 ± 5mm.Latex powder volume 2%, ether of cellulose volume 0.20%, hydrophobic rubber powder volume 0.15%, all accounts for the mass percent of dry powder of red mud, metakaolin, slag powders, quartz sand component.The physical and mechanical property test of mortar is carried out according to the related request in JC/T1024-2007 " wall facing mortar ".
The impact of metakaolin on facing mortar performance is as shown in table 6.
Table 6
Note: the adding mode of metakaolin is equivalent replace red mud.
Known by table 6, metakaolin volume lower than 10% time, ultimate compression strength and the cohesive strength of mortar remain unchanged substantially, and mortar is without the accumulation of salt in the surface soil.This is because metakaolin particle will be narrower than red mud, and when it replaces red mud, its " micro-aggregate effect " in mortar makes the overall compactness extent of mortar be further enhanced, thus the alkali burnout resistance showing as mortar can improve.In addition, metakaolin participates in alkali-activated carbonatite and reacts the effect that the N-A-S-H gel generated also plays bonding alkalimetal ion, This further reduces the alkali stripping of mortar.When metakaolin volume is more than 10%, the strength property of mortar and alkali burnout resistance all can present certain reduction trend.This is because the fineness of metakaolin is greater than red mud, and under same mobility condition, the water requirement of mortar becomes large, and namely mortar will mix more mixing waters, and therefore the compactness extent of mortar reduces, and causes performance to occur declining.Therefore, when preparing red mud base facing mortar with metakaolin replacement red mud, its volume is unsuitable too high, should be advisable to be no more than 10%.
Embodiment 7
According to previous embodiment, design better formula to verify the performance of facing mortar of the present invention.
" 60% red mud+30% slag powders+10% metakaolin+3% water glass is (with Na to adopt proportioning
2o counts) " prepare red mud base alkali-activated carbonatite gelling material; and with this alkali-activated carbonatite gelling material and 30 ~ 60 object quartz sands for main raw material, under the condition of cement mortar rate 1:4, latex powder volume 2%, ether of cellulose volume 0.20%, hydrophobic rubber powder volume 0.15%, Mortar'S Flowability 170 ± 5mm, prepare facing mortar.And the physical and mechanical property test of mortar is carried out according to the related request in JC/T1024-2007 " wall facing mortar ".Result is as shown in table 7.
Table 7
Known by table 7, the facing mortar after ratio optimization, its physical properties all meets the related request in JC/T1024-2007 " wall facing mortar ", and especially alkali burnout resistance can significantly improve.
Claims (1)
1. the red facing mortar prepared of a red mud base alkali-activated carbonatite gelling material, it is characterized in that, described mortar is made up of red mud base alkali-activated carbonatite gelling material, quartz sand, latex powder, ether of cellulose, hydrophobic rubber powder, described red mud base alkali-activated carbonatite gelling material forms powder by 60 ~ 70% red mud+30% slag powders+0 ~ 10% metakaolins, and this powder is excited by 3 ~ 5% water glass; Described red mud is red mud from sintering process, and its fineness is that 45 μm of square hole sieves tail over and are not more than 20.0%; The specific surface area of described slag powders is not less than 400m
2/ kg, Activity Rank is not less than S95; The activity index of described metakaolin is not less than 100; The modulus of described liquid soluble glass, not higher than 2.2, is not less than 1.6; The fineness of described quartz sand is 30 ~ 60 orders, SiO
2content is not less than 98.8%, and powder containing quantity is not higher than 0.2%; Described mortar cement mortar rate is set as 1/4; Described latex powder is water-soluble redispersible powder, and can be the multipolymer of ethylene/vinyl acetate, the multipolymer of vinyl acetate between to for plastic/tertiary monocarboxylic acid ethene and acrylic acid multipolymer, its solid content be not less than 98%, and consumption is not more than 2%; Described ether of cellulose can be the etherate of methylcellulose gum, Vltra tears, Natvosol, its on the impact of gelling material time of coagulation be no more than ± 10 minutes, consumption is not more than 0.2%; Described hydrophobic rubber powder is that its consumption is not more than 0.2% by the emulsion modified a kind of hydrophobic type polymers function rubber powder of peo resin, organosilicon Dichlorodiphenyl Acetate ethylene/vinyl.
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| CN109982987A (en) * | 2016-08-04 | 2019-07-05 | 地聚合物解决方案有限责任公司 | The cement base sprayed fire proofing of fireproof coating and the cold fusion concrete high-intensitive, density is controllable |
| CN113308135A (en) * | 2021-06-18 | 2021-08-27 | 亚士漆(上海)有限公司 | Rammed-soil-imitated dry powder crack coating and preparation method and application thereof |
| CN114133175A (en) * | 2021-12-31 | 2022-03-04 | 上海力阳道路加固科技股份有限公司 | Red mud-based polymer color mortar and preparation method thereof |
| CN115340778A (en) * | 2022-08-28 | 2022-11-15 | 惠州市固硕宝建材有限公司 | Crack waterproof coating and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982987A (en) * | 2016-08-04 | 2019-07-05 | 地聚合物解决方案有限责任公司 | The cement base sprayed fire proofing of fireproof coating and the cold fusion concrete high-intensitive, density is controllable |
| CN109982987B (en) * | 2016-08-04 | 2021-12-10 | 地聚合物解决方案有限责任公司 | Cement-based spray fireproofing of refractory coating and high-strength and density-controllable cold-fused concrete |
| CN107010880A (en) * | 2017-03-31 | 2017-08-04 | 中民筑友科技投资有限公司 | A kind of decoration mortar of water-proof alkali-resistant and preparation method thereof |
| CN108164169A (en) * | 2018-01-23 | 2018-06-15 | 东南大学 | A kind of red mud-slag compound ground oligomer gel material for reinforcing soft foundation |
| CN108585714A (en) * | 2018-06-21 | 2018-09-28 | 同济大学 | It is a kind of using ardealite base hydraulicity composite gel material as the boundary mortar of agglutination material |
| CN113308135A (en) * | 2021-06-18 | 2021-08-27 | 亚士漆(上海)有限公司 | Rammed-soil-imitated dry powder crack coating and preparation method and application thereof |
| CN114133175A (en) * | 2021-12-31 | 2022-03-04 | 上海力阳道路加固科技股份有限公司 | Red mud-based polymer color mortar and preparation method thereof |
| CN115340778A (en) * | 2022-08-28 | 2022-11-15 | 惠州市固硕宝建材有限公司 | Crack waterproof coating and preparation method thereof |
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