CN107902946B - Sponge type pervious concrete reinforcing material and preparation method thereof - Google Patents
Sponge type pervious concrete reinforcing material and preparation method thereof Download PDFInfo
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- CN107902946B CN107902946B CN201710405321.3A CN201710405321A CN107902946B CN 107902946 B CN107902946 B CN 107902946B CN 201710405321 A CN201710405321 A CN 201710405321A CN 107902946 B CN107902946 B CN 107902946B
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- reinforcing material
- pervious concrete
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Abstract
The invention provides a sponge type pervious concrete reinforcing material, which comprises nano silicon dioxide, siloxane containing amino, oligomer diol, diisocyanate and a chain extender. The invention also provides a preparation method of the sponge type pervious concrete reinforcing material. The sponge type pervious concrete reinforcing material can effectively solve the problems of too low ultimate tensile strength of concrete and insufficient content of active silicon dioxide caused by only using an organic pervious concrete reinforcing material, and can also solve the technical problems of monotonous appearance color and lack of color change of pervious concrete caused by only using an inorganic pervious concrete reinforcing material.
Description
Technical Field
The invention relates to a sponge type pervious concrete reinforcing material and a preparation method thereof, belonging to the technical field of building materials.
Background
In recent years, the urban heat island effect is more and more concerned by people, and the urban construction also more and more pays more attention to environmental protection. The pervious concrete pavement is also widely applied to various non-motor vehicle lanes, landscape roads, square roads and the like. Nowadays, pervious concrete is mature day by day, but still has some problems.
The existing permeable concrete reinforcing materials are divided into organic permeable concrete reinforcing materials or inorganic permeable concrete reinforcing materials. Common organic permeable concrete reinforcements include silicon-modified acrylic resins, epoxy resins, polyurethanes, and the like. When the organic material is used as the pervious concrete reinforcing material, the ultimate tensile strength and the content of active silicon dioxide of the pervious concrete can not meet the requirements of technical indexes, and the technical indexes of the pervious concrete, such as compressive strength, bending tensile strength, frost resistance, wear resistance and the like, can not meet the requirements. In addition, common inorganic pervious concrete reinforcements include sodium sulfate, lignosulfonate, and the like. When the inorganic material is used as a pervious concrete reinforcing material, the appearance color of the pervious concrete is monotonous and lacks of color change.
Therefore, the development of a concrete reinforcing material capable of overcoming the problems caused by the organic pervious concrete reinforcing material and the inorganic pervious concrete reinforcing material is a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a sponge type pervious concrete reinforcing material, which is obtained by selecting and matching nano silicon dioxide, siloxane containing amino, oligomer diol, diisocyanate and a chain extender. The sponge type permeable concrete reinforcing material can effectively solve the problems that the ultimate tensile strength of concrete is too low and the content of active silica is insufficient due to the fact that an organic permeable concrete reinforcing material is used only, and can also solve the technical problems that the appearance color of permeable concrete is monotonous and the color is changed due to the fact that an inorganic permeable concrete reinforcing material is used only.
The invention also provides a preparation method of the sponge type pervious concrete reinforcing material, which prepares the sponge type pervious concrete reinforcing material by matching the components of nano silicon dioxide, amino-containing siloxane, oligomer diol, diisocyanate, a chain extender and the like and confirming the preparation process.
The invention provides a sponge type pervious concrete reinforcing material which comprises nano silicon dioxide, siloxane containing amino, oligomer diol, diisocyanate and a chain extender.
The sponge type pervious concrete reinforcing material comprises the following components in percentage by weight: 80-90% of nano silicon dioxide, 1-4% of siloxane containing amino, 6-12% of oligomer diol, 0.1-1% of diisocyanate and 1-3% of chain extender.
The particle size of the nano silicon dioxide used in the invention is 10-100 nm.
Chain extenders useful in the present invention include 1, 4-butanediol, ethylene glycol, 1, 4-cyclohexanediol, and 1, 4-bis (hydroxyethyl) piperazine.
The invention also provides a preparation method of the sponge type pervious concrete reinforcing material, which comprises the following steps:
uniformly mixing an amino-containing siloxane, an oligomer diol, a diisocyanate, and a chain extender to form a dispersion;
and mixing the dispersion liquid with nano silicon dioxide to form the sponge type pervious concrete reinforcing material.
The sponge type pervious concrete reinforcing material comprises the following components in percentage by weight: 80-90% of nano silicon dioxide, 1-4% of siloxane containing amino, 6-12% of oligomer diol, 0.1-1% of diisocyanate and 1-3% of chain extender.
The invention also provides application of the sponge type pervious concrete reinforcing material in road construction or hydraulic engineering.
Compared with the prior art, the sponge type pervious concrete mixture has the following beneficial effects:
1. the sponge type pervious concrete reinforcing material can obviously improve the ultimate tensile strength of pervious concrete and the content of active silicon dioxide.
2. The sponge type pervious concrete reinforcing material can also embody the color of the original colored stone and has more sense of reality.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A sponge type pervious concrete reinforcing material comprises nano silicon dioxide, siloxane containing amino, oligomer diol, diisocyanate and a chain extender, wherein,
the sponge type pervious concrete reinforcing material comprises the following components in percentage by weight: 80% of nano silicon dioxide, 1% of siloxane containing amino, 6% of oligomer diol, 0.1% of diisocyanate and 1% of chain extender.
In this example, the particle size of the nanosilica was 20nm and the chain extender used was 1, 4-butanediol.
Example 2
A sponge type pervious concrete reinforcing material comprises nano silicon dioxide, siloxane containing amino, oligomer diol, diisocyanate and a chain extender, wherein,
the sponge type pervious concrete reinforcing material comprises the following components in percentage by weight: 85% of nano silicon dioxide, 2% of siloxane containing amino, 7% of oligomer diol, 0.5% of diisocyanate and 2% of chain extender.
In this example, the particle size of the nanosilica was 50nm and the chain extender used was 1, 4-cyclohexanediol.
Example 3
A sponge type pervious concrete reinforcing material comprises nano silicon dioxide, siloxane containing amino, oligomer diol, diisocyanate and a chain extender, wherein,
the sponge type pervious concrete reinforcing material comprises the following components in percentage by weight: 90% of nano silicon dioxide, 4% of siloxane containing amino, 9% of oligomer diol, 0.8% of diisocyanate and 3% of chain extender.
In this example, the particle size of the nanosilica was 80nm and the chain extender used was 1, 4-bis (hydroxyethyl) piperazine.
Example 4
A preparation method of the sponge type pervious concrete reinforcing material of embodiment 1, comprising the following steps:
uniformly mixing an amino-containing siloxane, an oligomer diol, a diisocyanate, and a chain extender to form a dispersion;
and mixing the dispersion liquid with nano silicon dioxide to form the sponge type pervious concrete reinforcing material.
The sponge type pervious concrete reinforcing material prepared in the embodiment 4 can be applied to road construction or hydraulic engineering.
Example 5
A method for preparing the sponge type pervious concrete reinforcing material of example 2, which is the same as that of example 4. The sponge type pervious concrete reinforcing material prepared in example 5 can be applied to road construction or hydraulic engineering.
Example 6
A method for preparing the sponge type pervious concrete reinforcing material of example 3, which is the same as that of example 4. The sponge type pervious concrete reinforcing material prepared in the embodiment 6 can be applied to road construction or hydraulic engineering.
Comparative example 1
The pervious concrete reinforcing material comprises the following components in percentage by weight: 10% of nano silicon dioxide, 70% of fly ash, 1% of amino-containing siloxane, 6% of oligomer diol, 0.1% of diisocyanate and 1% of chain extender.
Comparative example 2
The pervious concrete reinforcing material comprises the following components in percentage by weight: 96% of epoxy binder, 2% of wetting agent and 2% of defoaming agent.
Comparative example 3
The pervious concrete reinforcing material comprises the following components in percentage by weight: 96% of acrylic acid binder, 2% of wetting agent and 2% of defoaming agent.
TABLE 1 Performance indices of pervious concrete reinforcements
As can be seen from Table 1:
the permeability coefficient and tensile strength of the permeable concrete reinforcing materials of the sponge type in examples 1 to 3 were significantly higher than those of the permeable concrete reinforcing materials of comparative examples 1 to 3.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The sponge type pervious concrete reinforcing material is characterized by comprising nano silicon dioxide, siloxane containing amino, oligomer diol, diisocyanate and a chain extender;
the sponge type pervious concrete reinforcing material comprises the following components in percentage by weight: 80-90% of nano silicon dioxide, 1-4% of siloxane containing amino, 6-12% of oligomer diol, 0.1-1% of diisocyanate and 1-3% of chain extender.
2. The sponge-type pervious concrete reinforcement of claim 1, wherein the nanosilica has a particle size of 10-100 nm.
3. The sponge-type pervious concrete reinforcement of claim 1, wherein said chain extender comprises 1, 4-butanediol, ethylene glycol, 1, 4-cyclohexanediol, and 1, 4-bis (hydroxyethyl) piperazine.
4. A method for preparing a permeable concrete reinforcing material of the sponge type according to any one of claims 1 to 3, comprising the steps of:
uniformly mixing an amino-containing siloxane, an oligomer diol, a diisocyanate, and a chain extender to form a dispersion;
and mixing the dispersion liquid with nano silicon dioxide to form the sponge type pervious concrete reinforcing material.
5. Use of a permeable concrete reinforcement of the sponge type according to any one of claims 1 to 3 in road construction or hydraulic engineering.
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| CN102050931A (en) * | 2010-11-16 | 2011-05-11 | 江苏博特新材料有限公司 | Preparation method of alkali resistant waterborne polyurethane emulsion |
| CN103275616A (en) * | 2013-06-06 | 2013-09-04 | 江苏博特新材料有限公司 | Environment-friendly water-based nano coating material used for concrete protection, and preparation method thereof |
| CN103588951A (en) * | 2013-11-12 | 2014-02-19 | 江南大学 | Preparation of high-strength hydrophobic photo-curing waterborne polyurethane nano-composite emulsion |
| CN103613730A (en) * | 2013-11-21 | 2014-03-05 | 五邑大学 | Method for preparing high-solid content waterborne polyurethane by using nano silicon dioxide polyether (ester) polyalcohol dispersion |
| CN105732940A (en) * | 2016-05-11 | 2016-07-06 | 江南大学 | Preparation method of waterborne polyurethane-silicon dioxide nano composite emulsion |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050931A (en) * | 2010-11-16 | 2011-05-11 | 江苏博特新材料有限公司 | Preparation method of alkali resistant waterborne polyurethane emulsion |
| CN103275616A (en) * | 2013-06-06 | 2013-09-04 | 江苏博特新材料有限公司 | Environment-friendly water-based nano coating material used for concrete protection, and preparation method thereof |
| CN103588951A (en) * | 2013-11-12 | 2014-02-19 | 江南大学 | Preparation of high-strength hydrophobic photo-curing waterborne polyurethane nano-composite emulsion |
| CN103613730A (en) * | 2013-11-21 | 2014-03-05 | 五邑大学 | Method for preparing high-solid content waterborne polyurethane by using nano silicon dioxide polyether (ester) polyalcohol dispersion |
| CN105732940A (en) * | 2016-05-11 | 2016-07-06 | 江南大学 | Preparation method of waterborne polyurethane-silicon dioxide nano composite emulsion |
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