CN108439899A - A kind of high intensity Ultralight cement-base composite material and preparation method thereof - Google Patents
A kind of high intensity Ultralight cement-base composite material and preparation method thereof Download PDFInfo
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- CN108439899A CN108439899A CN201810309415.5A CN201810309415A CN108439899A CN 108439899 A CN108439899 A CN 108439899A CN 201810309415 A CN201810309415 A CN 201810309415A CN 108439899 A CN108439899 A CN 108439899A
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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
- C04B28/04—Portland cements
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/24—Sea water resistance
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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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
- 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
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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
- 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
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- Chemical Kinetics & Catalysis (AREA)
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- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of high intensity Ultralight cement-base composite materials, which is characterized in that including following components：Cementitious material, hollow glass micropearl, polycarboxylate high performance water-reducing agent, water, wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:1‑2.5:100 200, the volume ratio of the cementitious material and hollow glass micropearl is 1:3‑8；The cementitious material includes the component of following mass percent：Cement 57%~78%, floating bead 15%~25%, silicon ash 3%~10%, ardealite 1%~3%, aluminium polychloride 3%~5%, the sum of the above cement, floating bead, silicon ash, ardealite, aluminium polychloride mass percent are 100%.The present invention is coordinated using cementitious material and hollow glass micropearl, obtains the Ultralight cement-base composite material of low-density, high intensity, and resistance of chloride ion penetration effect is preferable, at sea there is preferable application prospect on building floating.
Description
Technical field
The present invention relates to technical field of concrete, in particular to a kind of high intensity Ultralight cement-base composite material and its system
Preparation Method.
Background technology
Ultralight cement-base composite material refers to that unit weight is less than 1000kg/m3, i.e., density be less than water a kind of cement matrix
Material.The cement-based material that existing unit weight is less than water mainly has foam concrete and air entrained concrete, i.e., will be introduced in concrete empty
Gas forms honeycomb cavity, and it is relatively low that this cavity structure also results in the concrete crushing strength, is 5MPa or so, is not used to work
In journey load-carrying members.Becoming for Ultralight concrete is divided into as the group for mitigating concrete density using hollow glass micropearl
Gesture.
106007599 A of CN disclose a kind of Ultralight concrete and preparation method thereof, and cementitious material is contained in component
(portland cement, granulated blast-furnace slag, silicon ash), hollow glass micropearl, water-reducing agent, water, latex, vinal, density
For 650kg/m3, but it is 8.1-8.3MPa that intensity is too low, is not used to off-shore structure material.
107602019 A of CN disclose a kind of Ultralight concrete, in component containing cement, floating bead, silicon ash, water-reducing agent,
Water, flyash, limestone powder, free state calcium oxide, polypropylene fibre or steel fibre or combinations thereof, dehydrating agent, water-reducing agent, should
Concrete density 1179-1380kg/m3, it is 50-65.5MPa at 30 DEG C, still there are 8.2-19.4MPa in 900 DEG C of whens, therefore this is mixed
Solidifying soil is applied to the building element of high temperature-proof explosion, and it makes it that can not be applied to off-shore structure material higher than the density of water.
Marine particular surroundings can make concrete by Chloride Attack, and steel bar corrosion is extremely serious, and above-mentioned Ultralight is mixed
Solidifying soil do not consider to resist chlorion corrosion resistance this important indicator, and therefore, it is necessary to develop, a kind of density is small, intensity
Ultralight composite material and preparation method high, Anti-Chloride Ion Penetration is good promotes the construction of floating marine building.
Invention content
Present invention aim to solve the deficiency of above-mentioned background technology, provide that a kind of density is small, intensity is high, impervious
The good Ultralight composite material and preparation method of energy.
The technical scheme is that：A kind of high intensity Ultralight cement-base composite material, which is characterized in that including following
Component：Cementitious material, hollow glass micropearl, polycarboxylate high performance water-reducing agent, water, wherein cementitious material, the high property of polycarboxylic-acid
Can water-reducing agent, water mass ratio be 100:1-2.5:The volume ratio of 100-200, the cementitious material and hollow glass micropearl is 1:
3-8；
The cementitious material includes the component of following mass percent：Cement 57%~78%, floating bead 15%~25%, silicon
Ash 3%~10%, ardealite 1%~3%, aluminium polychloride 3%~5%, the above cement, floating bead, silicon ash, ardealite, polymerization
The sum of aluminium chloride mass percent is 100%.This programme is coordinated using cementitious material and hollow glass micropearl, due to cement, drift
Mutual excitation, promotion aquation between pearl, silicon ash, ardealite and aluminium polychloride, the hydrated product of generation is very closely knit, low
Its intensity and resistance of chloride ion penetration are greatly improved under density, finally obtain Ultralight cement-base composite material compression strength
For 12.6-15.2MPa, density 870-970kg/m3, resistance of chloride ion penetration 3.6 × 10-12-5×10-12m2/s。
The present invention is using the purpose of ardealite：Ardealite is a kind of industrial solid castoff of ultra-fine acidity,
Grain more its specific surface area of detailed rules and regulations is bigger, increases the area contacted with water, accelerates itself Ca2+And SO4 2-Dissolution rate,
The crystal nucleation rate of entringite is exactly accelerated, this has huge facilitation for the formation of cementitious material early strength,
Ardealite is added in Ultralight cement-base composite material, plays the effect of optimization grain composition and sulphate activation silicon ash.Phosphorus
Gypsum particle it is tiny, can give full play to its physics dense packing effect effect；Secondly, the silicon ash in cementitious material system is in silicate
The sulphate activation of alkali-activated carbonatite effect and ardealite that cement provides issues raw hydration reaction, hydrated product be entringite and
C-S-H gels, entringite are interweaved together with C-S-H gels, form space net structure, be filled with hardened cement paste
Surface, hole and gap, form a fine and close entirety.This is that other materials institute is irrealizable, as ultralight
The mineral admixture of matter cement-base composite material is a kind of good approach realized ardealite and efficiently used, and is had significant economical
Benefit.
The present invention is using the purpose of aluminium polychloride：Aluminium polychloride is industrial water conditioning agent polymeric aluminum, and incorporation is poly-
After closing aluminium chloride, Ca (OH)2Wear rate increase, the Ca (OH) being dissolved in hole solution2It is improved with the extent of reaction of miberal powder,
Generate more hydrated products.In addition, the Al in aluminium polychloride3+C-S-H gel interchains can be entered, replaced in C-S-H gels
Si, participate in C-S-H gels forming process, hydrated product Ca/ (Si+Al) than reduce, the aquation journey of interface cementitious material
Degree improves, and the amount of hydrated product increases, is filled with interface void, keeps bonding interface more closely knit.
The present invention is using the purpose of hollow glass micropearl：Hollow glass micropearl is hollow-core construction, has light-weight, body
The features such as product is big, compression strength is high, good fluidity, can not only be greatly reduced the density of material, can also assign its it is excellent every
The performances such as heat, sound insulation.
Preferably, the average grain diameter D of the floating bead50It it is 1-5 μm, specific surface area is 3000~3600m2/kg。
Preferably, the silicon ash is SiO2Mass percent is 92%~98%, specific surface area 15000m2/ kg~
18000m2The non-encrypted silicon ash of/kg.
Preferably, the density of the hollow glass micropearl is in 360kg/m3~400kg/m3, compression strength be 38MPa~
43MPa, grain size are 80 μm≤D90≤90μm。
Preferably, the ardealite is that original state phosphogypsum powder is milled to specific surface area 800m2/ kg~900m2/kg。
Preferably, the aluminium polychloride specific surface area is 180m2/ kg~200m2/kg。
Preferably, the cementitious material, hollow glass micropearl, polycarboxylate high performance water-reducing agent, water, wherein the material that is gelled
Material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:1.5-2:150-180, the cementitious material and hollow glass
The volume ratio of microballon is 1:5-7.
Preferably, the cementitious material includes the component of following mass percent：Cement 68%~75%, floating bead 18%
~20%, silicon ash 3%~6%, ardealite 1%~2%, aluminium polychloride 3%~4%, the above cement, floating bead, silicon ash, phosphorus stone
The sum of cream, aluminium polychloride mass percent are 100%.This programme is conducive to more preferably coordinate between cement components, finally
It is 14.4-15.2MPa, density 870-925kg/m to obtain Ultralight cement-base composite material compression strength3, chloride-penetration resistance
Property 3.6 × 10-12-4×10-12m2/s。
The present invention also provides a kind of preparation method of above-mentioned high intensity Ultralight cement-base composite material, feature exists
In step is：
(1) hollow glass micropearl, which is placed in 17-23 DEG C of saturated limewater clear liquid, stirs alkaline etching 2 hours, then rinse to
Neutrality, after drying, natural cooling at 60 DEG C, the water mixing that whole water quality 10-20% are added carries out pre-wetted treatment, obtains A
Component；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B groups
Point, polycarboxylate high performance water-reducing agent and remaining water are mixed, component C is obtained；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute, finally by component C
Be added, mix 3~5 minutes, after slurry mix is uniform, inject mold, be placed in 60 DEG C it is 3 days steam-cured, after cooled to room temperature,
Obtain Ultralight cement-base composite material.It is to by alkaline etching, make hollow that hollow glass micropearl pre-process by this programme
Glass microballoon surface roughening increases the cohesive force between hollow glass micropearl and cementitious material hydrated product, strong to improve
Degree and resistance of chloride ion penetration.
Beneficial effects of the present invention are：
Coordinated using cementitious material and hollow glass micropearl, obtains the Ultralight cement base composite wood of low-density, high intensity
Material, and resistance of chloride ion penetration excellent, at sea have preferable application prospect, may advantageously facilitate sea on building floating
The construction of building floating (artificial floating island, floating platform, engineering buoyancy tank etc.).
Description of the drawings
Fig. 1 is the process flow chart of preparation method of the present invention
Specific implementation mode
The present invention is described in further detail for specific embodiment below.
In following embodiment：Cement is (42.5,52.5,62.5 grades of the portland cement that strength grade is not less than 42.5 grades
)；The average grain diameter of floating bead is 1-5 μm, 3000~3600m of specific surface area2/kg；Silicon ash is SiO2Mass percent is
92%~98%, specific surface area 15000m2/ kg~18000m2The non-encrypted silicon ash of/kg；The density of hollow glass micropearl is
360kg/m3~400kg/m3, compression strength is 38MPa~43MPa, 80 μm≤D of grain size90≤90μm；Ardealite is original state phosphorus stone
Cream grinding to specific surface area is 800m2/ kg~900m2/kg；Aluminium polychloride specific surface area is 180m2/ kg~200m2/kg；
Polycarboxylate high performance water-reducing agent water-reducing rate is more than 30%.
Embodiment 1
A kind of Ultralight cement-base composite material provided by the embodiment, including following components：Cementitious material, hollow glass are micro-
Pearl, polycarboxylate high performance water-reducing agent, water,
Wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:2:100；
Cementitious material and the volume ratio of hollow glass micropearl are 1:5；
Cementitious material is mixed to get by the component of following mass percent：Cement 62.5%, floating bead 25%, silicon ash 5%, phosphorus
Gypsum 2.5%, aluminium polychloride 5%.
The technological process of the preparation method of above-mentioned Ultralight cement-base composite material as shown in Figure 1, the specific steps are：
(1) hollow glass micropearl is placed in stirring alkaline etching 2h in 17-23 DEG C of saturated limewater clear liquid, is then rinsed into
Property, after drying, natural cooling at 60 DEG C, water (the 10% of i.e. whole water qualities) mixing progress that mass fraction 10% is added is pre-
Wet process obtains A components；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B groups
Point, polycarboxylate high performance water-reducing agent and remaining water are mixed, component C is obtained；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute, finally by component C
It is added, mix 3~5 minutes, after slurry mix is uniform, injects mold, be placed in 60 DEG C of steam-cured 3d, after cooled to room temperature,
Obtain Ultralight cement-base composite material.
Embodiment 2
A kind of Ultralight cement-base composite material provided by the embodiment, including following components：Cementitious material, hollow glass are micro-
Pearl, polycarboxylate high performance water-reducing agent, water,
Wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:2.5:200；
Cementitious material and the volume ratio of hollow glass micropearl are 1:4；
Cementitious material is mixed to get by the component of following mass percent：Cement 57%, floating bead 25%, silicon ash 10%, phosphorus
Gypsum 3%, aluminium polychloride 5%.
The technological process of the preparation method of above-mentioned Ultralight cement-base composite material as shown in Figure 1, the specific steps are：
(1) hollow glass micropearl is placed in stirring alkaline etching 2h in 17-23 DEG C of saturated limewater clear liquid, is then rinsed into
Property, after drying, natural cooling at 60 DEG C, water (the 15% of i.e. whole water qualities) mixing progress that mass fraction 15% is added is pre-
Wet process obtains A components；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B groups
Point, polycarboxylate high performance water-reducing agent and remaining water are mixed, component C is obtained；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute, finally by component C
It is added, mix 3~5 minutes, after slurry mix is uniform, injects mold, be placed in 60 DEG C of steam-cured 3d, after cooled to room temperature,
Obtain Ultralight cement-base composite material.
Embodiment 3
A kind of Ultralight cement-base composite material provided by the embodiment, including following components：Cementitious material, hollow glass are micro-
Pearl, polycarboxylate high performance water-reducing agent, water,
Wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:1.5:160；
Cementitious material and the volume ratio of hollow glass micropearl are 1:7；
Cementitious material is mixed to get by the component of following mass percent：Cement 69%, floating bead 19.5%, silicon ash
5.5%, ardealite 2%, aluminium polychloride 4%.
The technological process of the preparation method of above-mentioned Ultralight cement-base composite material as shown in Figure 1, the specific steps are：
(1) hollow glass micropearl is placed in stirring alkaline etching 2h in 17-23 DEG C of saturated limewater clear liquid, is then rinsed into
Property, after drying, natural cooling at 60 DEG C, water (the 20% of i.e. whole water qualities) mixing progress that mass fraction 20% is added is pre-
Wet process obtains A components；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B groups
Point, polycarboxylate high performance water-reducing agent and remaining water are mixed, component C is obtained；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute, finally by component C
It is added, mix 3~5 minutes, after slurry mix is uniform, injects mold, be placed in 60 DEG C of steam-cured 3d, after cooled to room temperature,
Obtain Ultralight cement-base composite material.
Embodiment 4
A kind of Ultralight cement-base composite material provided by the embodiment, including following components：Cementitious material, hollow glass are micro-
Pearl, polycarboxylate high performance water-reducing agent, water,
Wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:1.8:150；
Cementitious material and the volume ratio of hollow glass micropearl are 1:6；
Cementitious material is mixed to get by the component of following mass percent：Cement 72.5%, floating bead 19%, silicon ash 3.5%,
Ardealite 1.5%, aluminium polychloride 3.5%.
The technological process of the preparation method of above-mentioned Ultralight cement-base composite material as shown in Figure 1, the specific steps are：
(1) hollow glass micropearl is placed in stirring alkaline etching 2h in 17-23 DEG C of saturated limewater clear liquid, is then rinsed into
Property, after drying, natural cooling at 60 DEG C, water (the 12% of i.e. whole water qualities) mixing progress that mass fraction 12% is added is pre-
Wet process obtains A components；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B groups
Point, polycarboxylate high performance water-reducing agent and remaining water are mixed, component C is obtained；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute, finally by component C
It is added, mix 3~5 minutes, after slurry mix is uniform, injects mold, be placed in 60 DEG C of steam-cured 3d, after cooled to room temperature,
Obtain Ultralight cement-base composite material.
Embodiment 5
A kind of Ultralight cement-base composite material provided by the embodiment, including following components：Cementitious material, hollow glass are micro-
Pearl, polycarboxylate high performance water-reducing agent, water,
Wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:2:180；
Cementitious material and the volume ratio of hollow glass micropearl are 1:5；
Cementitious material is mixed to get by the component of following mass percent：Cement 68%, floating bead 20%, silicon ash 6%, phosphorus
Gypsum 2%, aluminium polychloride 4%.
The technological process of the preparation method of above-mentioned Ultralight cement-base composite material as shown in Figure 1, the specific steps are：
(1) hollow glass micropearl is placed in stirring alkaline etching 2h in 17-23 DEG C of saturated limewater clear liquid, is then rinsed into
Property, after drying, natural cooling at 60 DEG C, water (the 18% of i.e. whole water qualities) mixing progress that mass fraction 18% is added is pre-
Wet process obtains A components；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B groups
Point, polycarboxylate high performance water-reducing agent and remaining water are mixed, component C is obtained；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute, finally by component C
It is added, mix 3~5 minutes, after slurry mix is uniform, injects mold, be placed in 60 DEG C of steam-cured 3d, after cooled to room temperature,
Obtain Ultralight cement-base composite material.
Embodiment 6
A kind of Ultralight cement-base composite material provided by the embodiment, including following components：Cementitious material, hollow glass are micro-
Pearl, polycarboxylate high performance water-reducing agent, water,
Wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:1.7:170；
Cementitious material and the volume ratio of hollow glass micropearl are 1:5.5；
Cementitious material is mixed to get by the component of following mass percent：Cement 75%, floating bead 18%, silicon ash 3%, phosphorus stone
Cream 1%, aluminium polychloride 3%.
The technological process of the preparation method of above-mentioned Ultralight cement-base composite material as shown in Figure 1, the specific steps are：
(1) hollow glass micropearl is placed in stirring alkaline etching 2h in 17-23 DEG C of saturated limewater clear liquid, is then rinsed into
Property, after drying, natural cooling at 60 DEG C, water (the 10% of i.e. whole water qualities) mixing progress that mass fraction 10% is added is pre-
Wet process obtains A components；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B groups
Point, polycarboxylate high performance water-reducing agent and remaining water are mixed, component C is obtained；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute, finally by component C
It is added, mix 3~5 minutes, after slurry mix is uniform, injects mold, be placed in 60 DEG C of steam-cured 3d, after cooled to room temperature,
Obtain Ultralight cement-base composite material.
Embodiment 7
A kind of Ultralight cement-base composite material provided by the embodiment, including following components：Cementitious material, hollow glass are micro-
Pearl, polycarboxylate high performance water-reducing agent, water,
Wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:2.2:130；
Cementitious material and the volume ratio of hollow glass micropearl are 1:8；
Cementitious material is mixed to get by the component of following mass percent：Cement 78%, floating bead 15%, silicon ash 3%, phosphorus
Gypsum 1%, aluminium polychloride 3%.
The technological process of the preparation method of above-mentioned Ultralight cement-base composite material as shown in Figure 1, the specific steps are：
(1) hollow glass micropearl is placed in stirring alkaline etching 2h in 17-23 DEG C of saturated limewater clear liquid, is then rinsed into
Property, after drying, natural cooling at 60 DEG C, water (the 15% of i.e. whole water qualities) mixing progress that mass fraction 15% is added is pre-
Wet process obtains A components；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B groups
Point, polycarboxylate high performance water-reducing agent and remaining water are mixed, component C is obtained；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute, finally by component C
It is added, mix 3~5 minutes, after slurry mix is uniform, injects mold, be placed in 60 DEG C of steam-cured 3d, after cooled to room temperature,
Obtain Ultralight cement-base composite material.
Embodiment 8
A kind of Ultralight cement-base composite material provided by the embodiment, including following components：Cementitious material, hollow glass are micro-
Pearl, polycarboxylate high performance water-reducing agent, water,
Wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be 100:1:190；
Cementitious material and the volume ratio of hollow glass micropearl are 1:3；
Cementitious material is mixed to get by the component of following mass percent：Cement 62%, floating bead 23%, silicon ash 7%, phosphorus
Gypsum 3%, aluminium polychloride 5%.
The technological process of the preparation method of above-mentioned Ultralight cement-base composite material as shown in Figure 1, the specific steps are：
(1) hollow glass micropearl is placed in stirring alkaline etching 2h in 17-23 DEG C of saturated limewater clear liquid, is then rinsed into
Property, after drying, natural cooling at 60 DEG C, water (the 20% of i.e. whole water qualities) mixing progress that mass fraction 20% is added is pre-
Wet process obtains A components；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B groups
Point, polycarboxylate high performance water-reducing agent and remaining water are mixed, component C is obtained；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute, finally by component C
It is added, mix 3~5 minutes, after slurry mix is uniform, injects mold, be placed in 60 DEG C of steam-cured 3d, after cooled to room temperature,
Obtain Ultralight cement-base composite material.
Performance test
Compression strength experiment test standard：With reference to national standard《Test method for strength of hydraulic cement mortar (ISO methods)》GBT17671-
1999。
Resistance of chloride ion penetration experiment test standard：With reference to national standard《Normal concrete long-term behaviour and endurance quality experiment
Method standard》GBT50082-2009.
The testing result of embodiment 1-8 Ultralight cement-base composite materials is as shown in table 1 below.
The testing result of 1 Ultralight cement-base composite material of table
The existing resistance of chloride ion penetration data for maritime environment concrete are about 4 × 10-12m2/ s, can from upper table
Know, the composite density that the present invention obtains is small, and intensity is big, and resistance of chloride ion penetration is mixed using extra large work with existing maritime environment
Solidifying soil quite, therefore can be widely used for the load-bearing of each floating marine building (artificial floating island, floating platform, engineering buoyancy tank etc.)
Structure.
Claims (9)
1. a kind of high intensity Ultralight cement-base composite material, which is characterized in that including following components：Cementitious material, hollow glass
Glass microballon, polycarboxylate high performance water-reducing agent, water, wherein cementitious material, polycarboxylate high performance water-reducing agent, water mass ratio be
100:1-2.5:The volume ratio of 100-200, the cementitious material and hollow glass micropearl is 1:3-8；
The cementitious material includes the component of following mass percent：Cement 57%~78%, floating bead 15%~25%, silicon ash
3%~10%, ardealite 1%~3%, aluminium polychloride 3%~5%, the above cement, floating bead, silicon ash, ardealite, polymerization chlorine
It is 100% to change the sum of aluminium mass percent.
2. high intensity Ultralight cement-base composite material as described in claim 1, which is characterized in that the average grain of the floating bead
Diameter D50It it is 1-5 μm, specific surface area is 3000~3600m2/kg。
3. high intensity Ultralight cement-base composite material as described in claim 1, which is characterized in that the silicon ash is SiO2Matter
Measure percentage be 92%~98%, specific surface area 15000m2/ kg~18000m2The non-encrypted silicon ash of/kg.
4. high intensity Ultralight cement-base composite material as described in claim 1, which is characterized in that the hollow glass micropearl
Density be 360kg/m3~400kg/m3, compression strength is 38MPa~43MPa, 80 μm≤D of grain size90≤90μm。
5. high intensity Ultralight cement-base composite material as described in claim 1, which is characterized in that the ardealite is original state
Phosphogypsum powder is milled to specific surface area 800m2/ kg~900m2/kg。
6. high intensity Ultralight cement-base composite material as described in claim 1, which is characterized in that the aluminium polychloride ratio
Surface area is 180m2/ kg~200m2/kg。
7. high intensity Ultralight cement-base composite material as described in claim 1, which is characterized in that the cementitious material is gathered
Carboxylic acid series high-performance dehydragent, water mass ratio be 100:1.5-2:150-180, the cementitious material and hollow glass micropearl
Volume ratio is 1:5-7.
8. high intensity Ultralight cement-base composite material as described in claim 1, which is characterized in that the cementitious material includes
The component of following mass percent：Cement 68%~75%, floating bead 18%~20%, silicon ash 3%~6%, ardealite 1%~
2%, aluminium polychloride 3%~4%, the sum of the above cement, floating bead, silicon ash, ardealite, aluminium polychloride mass percent are
100%.
9. a kind of preparation method of high intensity Ultralight cement-base composite material as described in claim 1-8 is any, feature
It is, step is：
(1) hollow glass micropearl, which is placed in 17-23 DEG C of saturated limewater clear liquid, stirs alkaline etching 2 hours, then rinses to neutrality,
After drying, natural cooling at 60 DEG C, the water mixing that whole water quality 10-20% are added carries out pre-wetted treatment, obtains component A；
(2) cement components cement, floating bead, silicon ash, ardealite, aluminium polychloride are pre-mixed, obtain B component, it will
Polycarboxylate high performance water-reducing agent and the mixing of remaining water, obtain component C；
(3) component A is first placed in mix 1 minute in blender, then B component is added, mix 1 minute finally adds component C
Enter, mix 3~5 minutes, after slurry mix is uniform, inject mold, be placed in 60 DEG C it is 3 days steam-cured, after cooled to room temperature, obtain
To Ultralight cement-base composite material.
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| CN115073028A (en) * | 2022-07-25 | 2022-09-20 | 贵阳中建西部建设有限公司 | Environment-friendly light cementing material and preparation method thereof |
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