CN109053077A - A kind of thermal-insulating and anti-cracking foamed cement - Google Patents
A kind of thermal-insulating and anti-cracking foamed cement Download PDFInfo
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- CN109053077A CN109053077A CN201811042845.1A CN201811042845A CN109053077A CN 109053077 A CN109053077 A CN 109053077A CN 201811042845 A CN201811042845 A CN 201811042845A CN 109053077 A CN109053077 A CN 109053077A
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- cracking
- insulating
- foamed cement
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Classifications
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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
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
-
- 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
-
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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 discloses a kind of thermal-insulating and anti-cracking foamed cements, its raw material includes: 100 parts of ordinary portland cement, 1-1.25 parts of foaming agent, 8-10 parts of thermal insulation material by weight, 0.02-0.03 parts of sodium tripolyphosphate, 0.4-0.6 parts of lauroyl diethanolamine, 2.6-3 parts of coagulant, 5-6 parts of waterproofing agent of organosilicon, 5-7 parts of reinforcing agent, 35-40 parts of water, wherein reinforcing agent is nano-titanium dioxide, modified bamboo fiber, carboxymethyl cellulose.Thermal coefficient of the present invention is low, and heat insulation effect is good, and crack resistance is good.
Description
Technical field
The present invention relates to cement technology field more particularly to a kind of thermal-insulating and anti-cracking foamed cements.
Background technique
Foamed cement mainly introduces bubble by way of chemically or physically foaming, and foam is uniformly mixed with cement slurry
It solidifies afterwards, harden and formed.Foamed cement is a kind of novel light insulation material containing a large amount of sealed porositys.Foamed cement
Thermal coefficient is generally 0.1-0.2W/mk, can reduce its thermal coefficient by adjusting cement formula or thermal insulation material, still
It is also only generally reduced to 0.08W/mk or so, and the compressive property of foamed cement is not high, is easy cracking.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of thermal-insulating and anti-cracking foamed cement, the present invention is led
Hot coefficient is low, and heat insulation effect is good, and crack resistance is good.
A kind of thermal-insulating and anti-cracking foamed cement proposed by the present invention, raw material include: ordinary portland cement 100 by weight
Part, 1-1.25 parts of foaming agent, 8-10 parts of thermal insulation material, 0.02-0.03 parts of sodium tripolyphosphate, lauroyl diethanolamine 0.4-0.6
Part, 2.6-3 parts of coagulant, 5-6 parts of waterproofing agent of organosilicon, 5-7 parts of reinforcing agent, 35-40 parts of water, wherein reinforcing agent is nanometer two
Titanium oxide, modified bamboo fiber, carboxymethyl cellulose.
Preferably, the length of modified bamboo fiber is 5-6mm.
Preferably, nano-titanium dioxide, modified bamboo fiber, carboxymethyl cellulose weight ratio be 0.5-0.7:2-3:1-
2。
Preferably, in the preparation process of modified bamboo fiber, bamboo fiber is placed in boiling 1-2h in boiling water, is then used
Hydrogen peroxide bleaching 10-15min, washing, dries, and combing is paved, and sprays distearyl acyl-oxygen isopropyl Aluminate molten liquid, dries,
Drying, crushing obtain modified bamboo fiber.
Preferably, in the preparation process of modified bamboo fiber, the temperature of drying is 90-100 DEG C, keeps the temperature 15-18h.
Preferably, in the preparation process of modified bamboo fiber, bamboo fiber and distearyl acyl-oxygen isopropyl Aluminate
Weight ratio is 1:0.1-0.2.
Preferably, thermal insulation material is graphite powder and expanded slag pearl.
Preferably, coagulant is sodium aluminate, sodium carbonate, quick lime and triethanolamine.
Preferably, foaming agent is neopelex and sodium lauroyl sarcosine.
Preferably, the weight ratio of graphite powder and expanded slag pearl is 1:7-9.
Preferably, the weight ratio of sodium aluminate, sodium carbonate, quick lime and triethanolamine is 1-1.2:1-1.2:0.5-0.6:
0.05-0.07。
Preferably, the weight ratio of neopelex and sodium lauroyl sarcosine is 9-11:1-1.5.
Of the invention obtains foam solution the preparation method comprises the following steps: foaming agent and water are mixed to foam；By ordinary portland cement,
Thermal insulation material, sodium tripolyphosphate, lauroyl diethanolamine, coagulant, waterproofing agent of organosilicon, reinforcing agent mix, and it is molten that foam is added
Liquid mixes, casting, and maintenance obtains thermal-insulating and anti-cracking foamed cement.
The present invention selects neopelex and sodium lauroyl sarcosine to be used as foaming agent, and the two mutual cooperation can be with
The stability for improving coefficient of foaming, increasing foam, extends the retention time of foam, and foam is uniformly tiny, with normal silicate
Cement cooperates, and consistent internal structure of the present invention can be made fine and close, improve heat preservation uniformity and cracking resistance；Dodecyl
Benzene sulfonic acid sodium salt and sodium lauroyl sarcosine are cooperated with suitable proportion and can further increase the uniform of internal structure of the present invention
It is fine and close；Lauroyl diethanolamine can increase the toughness and stability of foam, extend the foam stable time, avoid the mould that collapses；Aluminium
Sour sodium, sodium carbonate, quick lime and triethanolamine are as coagulant, when can shorten the condensation and hardening of ordinary portland cement
Between, avoid setting time too long, lather collapse causes the mould that collapses, and triethanolamine and lauroyl diethanolamine cooperate, can
To further increase the stability of foam；Expanded slag pearl and foam cooperate, and increase encapsulated bubble type and add graphite
Powder increases heat reflection performance, and three's mutual cooperation is synergistic, greatly increases thermal insulation property of the invention, and can reduce this hair
Bright density；Sodium tripolyphosphate can promote graphite powder, expanded slag pearl and cement evenly dispersed, further increase of the invention
Thermal insulation property；Nano-titanium dioxide, modified bamboo fiber, carboxymethyl cellulose, which cooperate, is used as reinforcing agent, bamboo fiber warp
Boiling, bleaching and spraying distearyl acyl-oxygen isopropyl Aluminate processing, so that bamboo fiber can be evenly dispersed in cement, and
And the problem of avoiding later period fibrous absorbent, strength of cement is caused to reduce, increase toughness and cracking resistance of the invention, and be suitable for length
The fiber of degree can further increase cracking resistance of the invention；Foamed cement therein, bamboo fiber and cement junction
There is minute crack, nano-titanium dioxide can fill minute crack, further increase crack resistance of the invention, and nano-silica
Change titanium and graphite powder cooperates, can be further improved thermal insulation property of the invention；Modified bamboo fiber, nano-titanium dioxide
It is cooperated with carboxymethyl cellulose with proper ratio, crack resistance of the invention can be further increased；Above-mentioned each substance is to close
Suitable ratio mutual cooperation can further increase thermal insulation property and cracking resistance of the invention.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of thermal-insulating and anti-cracking foamed cement, raw material include: 100 parts of ordinary portland cement by weight, foaming agent
1.15 parts, 9 parts of thermal insulation material, 0.025 part of sodium tripolyphosphate, 0.5 part of lauroyl diethanolamine, 2.8 parts of coagulant, organosilicon is anti-
5.5 parts of aqua, 6 parts of reinforcing agent, 37.5 parts of water, wherein reinforcing agent is nano-titanium dioxide, modified bamboo fiber, carboxymethyl fibre
Dimension element.
Embodiment 2
A kind of thermal-insulating and anti-cracking foamed cement, raw material include: 100 parts of ordinary portland cement by weight, foaming agent 1
Part, 10 parts of thermal insulation material, 0.02 part of sodium tripolyphosphate, 0.6 part of lauroyl diethanolamine, 2.6 parts of coagulant, waterproofing agent of organosilicon
6 parts, 5 parts of reinforcing agent, 40 parts of water, wherein reinforcing agent is nano-titanium dioxide, length is 5-6mm modification bamboo fiber, carboxylic first
Base cellulose, wherein nano-titanium dioxide, modified bamboo fiber, carboxymethyl cellulose weight ratio be 0.7:2:2；
In the preparation process of modified bamboo fiber, bamboo fiber is placed in boiling 1h in boiling water, is then floated with hydrogen peroxide
White 15min, washing, dries, and combing is paved, and sprays distearyl acyl-oxygen isopropyl Aluminate molten liquid, dries, be warming up to 90 DEG C,
18h is kept the temperature, crushing obtains modified bamboo fiber, wherein the weight ratio of bamboo fiber and distearyl acyl-oxygen isopropyl Aluminate is
1:0.1.
Embodiment 3
A kind of thermal-insulating and anti-cracking foamed cement, raw material include: 100 parts of ordinary portland cement by weight, foaming agent
1.25 parts, 8 parts of thermal insulation material, 0.03 part of sodium tripolyphosphate, 0.4 part of lauroyl diethanolamine, 3 parts of coagulant, organic silicon water-proofing
5 parts of agent, 7 parts of reinforcing agent, 35 parts of water, wherein reinforcing agent is nano-titanium dioxide, length is 5-6mm modification bamboo fiber, carboxylic
Methylcellulose, wherein nano-titanium dioxide, modified bamboo fiber, carboxymethyl cellulose weight ratio be 0.5:3:1；
In the preparation process of modified bamboo fiber, bamboo fiber is placed in boiling 2h in boiling water, is then floated with hydrogen peroxide
White 10min, washing, dries, and combing is paved, and sprays distearyl acyl-oxygen isopropyl Aluminate molten liquid, dries, be warming up to 100 DEG C,
15h is kept the temperature, crushing obtains modified bamboo fiber, wherein the weight ratio of bamboo fiber and distearyl acyl-oxygen isopropyl Aluminate is
1:0.2；
Thermal insulation material is graphite powder and expanded slag pearl, wherein the weight ratio of graphite powder and expanded slag pearl is 1:7；
Coagulant is sodium aluminate, sodium carbonate, quick lime and triethanolamine, wherein sodium aluminate, sodium carbonate, quick lime and three
The weight ratio of ethanol amine is 1.2:1:0.6:0.05；
Foaming agent is neopelex and sodium lauroyl sarcosine, wherein neopelex and laurel
The weight ratio of acylsarcosine sodium is 11:1.
Embodiment 4
A kind of thermal-insulating and anti-cracking foamed cement, raw material include: 100 parts of ordinary portland cement by weight, foaming agent 1.1
Part, 9.5 parts of thermal insulation material, 0.022 part of sodium tripolyphosphate, 0.55 part of lauroyl diethanolamine, 2.7 parts of coagulant, organosilicon is anti-
5.7 parts of aqua, 5.5 parts of reinforcing agent, 38 parts of water, wherein the modified bamboo that reinforcing agent is nano-titanium dioxide, length is 5-6mm is former
Fiber, carboxymethyl cellulose, wherein nano-titanium dioxide, modified bamboo fiber, carboxymethyl cellulose weight ratio be 0.55:
2.8:1.3；
In the preparation process of modified bamboo fiber, bamboo fiber is placed in boiling 1.8h in boiling water, then uses hydrogen peroxide
11min is bleached, washing is dried, and combing is paved, and is sprayed distearyl acyl-oxygen isopropyl Aluminate molten liquid, is dried, be warming up to 98
DEG C, 16h is kept the temperature, crushing obtains modified bamboo fiber, wherein the weight ratio of bamboo fiber and distearyl acyl-oxygen isopropyl Aluminate
For 1:0.17；
Thermal insulation material is graphite powder and expanded slag pearl, wherein the weight ratio of graphite powder and expanded slag pearl is 1:9；
Coagulant is sodium aluminate, sodium carbonate, quick lime and triethanolamine, wherein sodium aluminate, sodium carbonate, quick lime and three
The weight ratio of ethanol amine is 1:1.2:0.5:0.07；
Foaming agent is neopelex and sodium lauroyl sarcosine, wherein neopelex and laurel
The weight ratio of acylsarcosine sodium is 9:1.5.
Embodiment 5
A kind of thermal-insulating and anti-cracking foamed cement, raw material include: 100 parts of ordinary portland cement by weight, foaming agent 1.2
Part, 8.5 parts of thermal insulation material, 0.028 part of sodium tripolyphosphate, 0.45 part of lauroyl diethanolamine, 2.9 parts of coagulant, organosilicon is anti-
5.3 parts of aqua, 6.5 parts of reinforcing agent, 37 parts of water, wherein the modified bamboo that reinforcing agent is nano-titanium dioxide, length is 5-6mm is former
Fiber, carboxymethyl cellulose, wherein nano-titanium dioxide, modified bamboo fiber, carboxymethyl cellulose weight ratio be 0.65:
2.2:1.7；
In the preparation process of modified bamboo fiber, bamboo fiber is placed in boiling 1.2h in boiling water, then uses hydrogen peroxide
13min is bleached, washing is dried, and combing is paved, and is sprayed distearyl acyl-oxygen isopropyl Aluminate molten liquid, is dried, be warming up to 92
DEG C, 17h is kept the temperature, crushing obtains modified bamboo fiber, wherein the weight ratio of bamboo fiber and distearyl acyl-oxygen isopropyl Aluminate
For 1:0.13；
Thermal insulation material is graphite powder and expanded slag pearl, wherein the weight ratio of graphite powder and expanded slag pearl is 1:8；
Coagulant is sodium aluminate, sodium carbonate, quick lime and triethanolamine, wherein sodium aluminate, sodium carbonate, quick lime and three
The weight ratio of ethanol amine is 1.1:1.1:0.55:0.06；
Foaming agent is neopelex and sodium lauroyl sarcosine, wherein neopelex and laurel
The weight ratio of acylsarcosine sodium is 10:1.25.
Performance detection is carried out to embodiment 1-5, result is as follows:
| Group | 28d tensile pressure ratio | Thermal coefficient W/mk |
| Embodiment 1 | 0.097 | 0.059 |
| Embodiment 2 | 0.110 | 0.056 |
| Embodiment 3 | 0.102 | 0.057 |
| Embodiment 4 | 0.108 | 0.053 |
| Embodiment 5 | 0.113 | 0.051 |
Crack resistance of the present invention is good as can be seen from the above table, and thermal coefficient is low, good heat insulating.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of thermal-insulating and anti-cracking foamed cement, which is characterized in that its raw material includes: 100 parts of ordinary portland cement by weight,
1-1.25 parts of foaming agent, 8-10 parts of thermal insulation material, 0.02-0.03 parts of sodium tripolyphosphate, 0.4-0.6 parts of lauroyl diethanolamine,
2.6-3 parts of coagulant, 5-6 parts of waterproofing agent of organosilicon, 5-7 parts of reinforcing agent, 35-40 parts of water, wherein reinforcing agent is nanometer titanium dioxide
Titanium, modified bamboo fiber, carboxymethyl cellulose.
2. thermal-insulating and anti-cracking foamed cement according to claim 1, which is characterized in that the length of modified bamboo fiber is 5-6mm.
3. thermal-insulating and anti-cracking foamed cement according to claim 1 or claim 2, which is characterized in that nano-titanium dioxide, modified bamboo fibril
Dimension, the weight ratio of carboxymethyl cellulose are 0.5-0.7:2-3:1-2.
4. any one of -3 thermal-insulating and anti-cracking foamed cement according to claim 1, which is characterized in that in the system of modified bamboo fiber
During standby, bamboo fiber is placed in boiling 1-2h in boiling water, then uses hydrogen peroxide bleaching 10-15min, washing is dried, and is combed
It paves, sprays distearyl acyl-oxygen isopropyl Aluminate molten liquid, dry, dry, crushing obtains modified bamboo fiber；Preferably,
In the preparation process of modified bamboo fiber, the temperature of drying is 90-100 DEG C, keeps the temperature 15-18h；Preferably, in modified bamboo original
In the preparation process of fiber, the weight ratio of bamboo fiber and distearyl acyl-oxygen isopropyl Aluminate is 1:0.1-0.2.
5. any one of -4 thermal-insulating and anti-cracking foamed cement according to claim 1, which is characterized in that thermal insulation material be graphite powder and
Expanded slag pearl.
6. any one of -5 thermal-insulating and anti-cracking foamed cement according to claim 1, which is characterized in that coagulant is sodium aluminate, carbon
Sour sodium, quick lime and triethanolamine.
7. any one of -6 thermal-insulating and anti-cracking foamed cement according to claim 1, which is characterized in that foaming agent is detergent alkylate
Sodium sulfonate and sodium lauroyl sarcosine.
8. thermal-insulating and anti-cracking foamed cement according to claim 5, which is characterized in that the weight ratio of graphite powder and expanded slag pearl
For 1:7-9.
9. thermal-insulating and anti-cracking foamed cement according to claim 6, which is characterized in that sodium aluminate, sodium carbonate, quick lime and three second
The weight ratio of hydramine is 1-1.2:1-1.2:0.5-0.6:0.05-0.07.
10. thermal-insulating and anti-cracking foamed cement according to claim 7, which is characterized in that neopelex and lauroyl
The weight ratio of sodium sarcosinate is 9-11:1-1.5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811042845.1A CN109053077A (en) | 2018-09-07 | 2018-09-07 | A kind of thermal-insulating and anti-cracking foamed cement |
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| CN201811042845.1A CN109053077A (en) | 2018-09-07 | 2018-09-07 | A kind of thermal-insulating and anti-cracking foamed cement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922112A (en) * | 2019-12-25 | 2020-03-27 | 福建农林大学 | Modified bamboo fiber reinforced cement mortar and preparation method thereof |
| CN111270826A (en) * | 2020-03-16 | 2020-06-12 | 晋江市美石美刻工艺美术品有限公司 | Cultural brick convenient to install and long in service life and preparation method thereof |
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| CN111270826A (en) * | 2020-03-16 | 2020-06-12 | 晋江市美石美刻工艺美术品有限公司 | Cultural brick convenient to install and long in service life and preparation method thereof |
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