CN108911595A - A kind of preparation method of strong anti-crack concrete of modified morning - Google Patents
A kind of preparation method of strong anti-crack concrete of modified morning Download PDFInfo
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- CN108911595A CN108911595A CN201810443702.5A CN201810443702A CN108911595A CN 108911595 A CN108911595 A CN 108911595A CN 201810443702 A CN201810443702 A CN 201810443702A CN 108911595 A CN108911595 A CN 108911595A
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- 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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Abstract
The invention discloses a kind of preparation methods of modified morning strong anti-crack concrete, include the following steps：S1：Pass through two kinds of means of solution at room temperature phase method and hydro-thermal method/solvent-thermal method, with inorganic salts or surfactant induction Ostwald maturing process, anion is slowly formed based on weakly alkaline environment under conditions of, " dissolution-forming core-grow up-Ostwald curing " process and " chemical transformation induces Ostwald curing " process synthesis compound superstructure chemical functional materials of micro-nano.The present invention can compare the variation of concrete macro property and microstructure before and after the compound superstructure chemical functional materials of addition micro-nano, realize that the corresponding relationship between concrete product microstructure and macro property is predicted, and then can realize that high performance concrete product designs.
Description
Technical field
The present invention relates to technical field of concrete more particularly to a kind of preparation methods of strong anti-crack concrete of modified morning.
Background technique
With the fast development of Chinese society economic level, urbanization process is accelerated year by year, and infrastructure construction amount reaches
Unprecedented scale.Concrete product is widely used in always soil with the cost of its good overall performance and relative moderate
The fields such as wood, water conservancy, harbour, bridge, road.Although concrete technology is widely used at present, the intensity of concrete
Also increase, but the high energy consumption of Concrete Industry, high carbon emission and the problems such as durability is insufficient under harsh environment according to
It is so one of the significant problem that the current whole world faces.
In recent years, with the development of nanotechnology, the research of many compound superstructure functional materials of self assembly micro-nano is obtained
It develops by leaps and bounds, application can make many traditional materials generate superior overall coordination performance.By to its scale and several
The simple manipulation of what appearance can obtain nano-particles self assemble novel whole after one-dimensional, two-dimentional or ordered 3 D structure
Body cooperative characteristics, and their property can be adjusted by the interaction between control nano particle.Therefore, these are new
The compound superstructure functional material of the novel micro nanometer emerged will play energetically facilitation to the optimization of the performance of concrete.Cause
How this, be effectively reduced the energy consumption of concrete product, promote its early strong, anti-contracility, crack resistance and under marine environment
Durability is the emphasis of current research.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of modified early strong cracking resistance proposed is mixed
Coagulate the preparation method of soil.
To achieve the goals above, present invention employs following technical solutions：
A kind of preparation method of strong anti-crack concrete of modified morning, includes the following steps：
S1：By two kinds of means of solution at room temperature phase method and hydro-thermal method/solvent-thermal method, lured with inorganic salts or surfactant
Under conditions of leading Ostwald maturing process, being slowly formed anion based on weakly alkaline environment, " dissolution-forming core-grows up-
Ostwald curing " process and " chemical transformation induces Ostwald curing " process synthesize the compound superstructure chemical functional material of micro-nano
Material；
S2：By changing technological parameter, realize that pattern, scale, the geometry of the compound superstructure chemical functional materials of micro-nano are equal
The accurate control of even property, the thickness of shell and the composition of shell and structure；
S3：After carrying out surface treatment appropriate to the compound superstructure chemical functional materials of micro-nano, it is compound to choose micro-nano
Superstructure chemical functional materials quality accounts for the percentage of cement quality, and the compound superstructure chemical functional materials of micro-nano are led to cement
Mechanical high-speed is crossed to be dispersed with stirring, sonic oscillation dispersion and be dispersed with stirring these three dispersing modes after mixing with concrete material
Prepare concrete sample；
S4：Density, air vent content and workability test are carried out to fresh concrete, conductance is carried out to maturing
Rate, thermal conductivity, compression strength, flexural strength, elasticity modulus test carry out shrinkage to concrete, cracking resistance is tested；
S5：Using the surface roughness of atomic force microscope observation concrete, so that the uniformity of its microstructure is characterized,
Concrete broken surface pattern, the chemistry of observation pore structure, distribution of pores and hydrated product are observed with scanning electron microscope
Ingredient, shape characteristic and constituent distribution character calculate the microcosmic elasticity of each component in concrete using nanohardness tester
Modulus and microcosmic toughness, with transmission electron microscope, high resolution electron microscope, X-ray diffraction and X-ray photoelectron
The analysis means such as energy disperse spectroscopy characterize microstructure, object phase composition, Elemental redistribution etc. after concrete hydrating.
Preferably, the percentage in the step S3 is：0.01%, 0.02%, 0.05%, 0.1%, 0.2%, 0.5%
Or 1%.
Preferably, the compression strength in the step S4 is：1d, 3d or 28d.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the low cost simple synthetic method of the compound superstructure chemical functional materials of nonhazardous micro-nano is originally to grind in the present invention
The new process characteristic studied carefully, synthesizing the compound superstructure chemical functional materials of micro-nano by template-free method is always materials science field
Technological break-through point urgently to be solved, since the compound superstructure chemical functional materials of micro-nano have pattern, size and crystal form variation
The characteristics of, so that its comprehensive performance can change a lot according to actual needs, therefore, designs according to demand and prepare micro-nano
Compound superstructure chemical functional materials are to promote early strong, cracking resistance, shrinkage type concrete product effective ways；
2, in the present invention before and after the compound superstructure chemical functional materials of comparison addition micro-nano concrete macro property with it is microcosmic
The variation of structure realizes that the corresponding relationship between concrete product microstructure and macro property is predicted, and then can realize high property
It can concrete product design.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.
Embodiment one：
A kind of preparation method of strong anti-crack concrete of modified morning, includes the following steps：
S1：By two kinds of means of solution at room temperature phase method and hydro-thermal method/solvent-thermal method, lured with inorganic salts or surfactant
Under conditions of leading Ostwald maturing process, being slowly formed anion based on weakly alkaline environment, " dissolution-forming core-grows up-
Ostwald curing " process and " chemical transformation induces Ostwald curing " process synthesize the compound superstructure chemical functional material of micro-nano
Material；
S2：By changing technological parameter, realize that pattern, scale, the geometry of the compound superstructure chemical functional materials of micro-nano are equal
The accurate control of even property, the thickness of shell and the composition of shell and structure；
S3：After carrying out surface treatment appropriate to the compound superstructure chemical functional materials of micro-nano, it is compound to choose micro-nano
Superstructure chemical functional materials quality accounts for the percentage of cement quality, and the compound superstructure chemical functional materials of micro-nano are led to cement
Mechanical high-speed is crossed to be dispersed with stirring, sonic oscillation dispersion and be dispersed with stirring these three dispersing modes after mixing with concrete material
Prepare concrete sample；
S4：Density, air vent content and workability test are carried out to fresh concrete, conductance is carried out to maturing
Rate, thermal conductivity, compression strength, flexural strength, elasticity modulus test carry out shrinkage to concrete, cracking resistance is tested；
S5：Using the surface roughness of atomic force microscope observation concrete, so that the uniformity of its microstructure is characterized,
Concrete broken surface pattern, the chemistry of observation pore structure, distribution of pores and hydrated product are observed with scanning electron microscope
Ingredient, shape characteristic and constituent distribution character calculate the microcosmic elasticity of each component in concrete using nanohardness tester
Modulus and microcosmic toughness, with transmission electron microscope, high resolution electron microscope, X-ray diffraction and X-ray photoelectron
The analysis means such as energy disperse spectroscopy characterize microstructure, object phase composition, Elemental redistribution etc. after concrete hydrating.
Percentage in step S3 is 0.01%, and the compression strength in step S4 is：1d, 3d or 28d.
Embodiment two：
A kind of preparation method of strong anti-crack concrete of modified morning, includes the following steps：
S1：By two kinds of means of solution at room temperature phase method and hydro-thermal method/solvent-thermal method, lured with inorganic salts or surfactant
Under conditions of leading Ostwald maturing process, being slowly formed anion based on weakly alkaline environment, " dissolution-forming core-grows up-
Ostwald curing " process and " chemical transformation induces Ostwald curing " process synthesize the compound superstructure chemical functional material of micro-nano
Material；
S2：By changing technological parameter, realize that pattern, scale, the geometry of the compound superstructure chemical functional materials of micro-nano are equal
The accurate control of even property, the thickness of shell and the composition of shell and structure；
S3：After carrying out surface treatment appropriate to the compound superstructure chemical functional materials of micro-nano, it is compound to choose micro-nano
Superstructure chemical functional materials quality accounts for the percentage of cement quality, and the compound superstructure chemical functional materials of micro-nano are led to cement
Mechanical high-speed is crossed to be dispersed with stirring, sonic oscillation dispersion and be dispersed with stirring these three dispersing modes after mixing with concrete material
Prepare concrete sample；
S4：Density, air vent content and workability test are carried out to fresh concrete, conductance is carried out to maturing
Rate, thermal conductivity, compression strength, flexural strength, elasticity modulus test carry out shrinkage to concrete, cracking resistance is tested；
S5：Using the surface roughness of atomic force microscope observation concrete, so that the uniformity of its microstructure is characterized,
Concrete broken surface pattern, the chemistry of observation pore structure, distribution of pores and hydrated product are observed with scanning electron microscope
Ingredient, shape characteristic and constituent distribution character calculate the microcosmic elasticity of each component in concrete using nanohardness tester
Modulus and microcosmic toughness, with transmission electron microscope, high resolution electron microscope, X-ray diffraction and X-ray photoelectron
The analysis means such as energy disperse spectroscopy characterize microstructure, object phase composition, Elemental redistribution etc. after concrete hydrating.
Percentage in step S3 is 0.1%, and the compression strength in step S4 is：1d, 3d or 28d.
Embodiment three：
A kind of preparation method of strong anti-crack concrete of modified morning, includes the following steps：
S1：By two kinds of means of solution at room temperature phase method and hydro-thermal method/solvent-thermal method, lured with inorganic salts or surfactant
Under conditions of leading Ostwald maturing process, being slowly formed anion based on weakly alkaline environment, " dissolution-forming core-grows up-
Ostwald curing " process and " chemical transformation induces Ostwald curing " process synthesize the compound superstructure chemical functional material of micro-nano
Material；
S2：By changing technological parameter, realize that pattern, scale, the geometry of the compound superstructure chemical functional materials of micro-nano are equal
The accurate control of even property, the thickness of shell and the composition of shell and structure；
S3：After carrying out surface treatment appropriate to the compound superstructure chemical functional materials of micro-nano, it is compound to choose micro-nano
Superstructure chemical functional materials quality accounts for the percentage of cement quality, and the compound superstructure chemical functional materials of micro-nano are led to cement
Mechanical high-speed is crossed to be dispersed with stirring, sonic oscillation dispersion and be dispersed with stirring these three dispersing modes after mixing with concrete material
Prepare concrete sample；
S4：Density, air vent content and workability test are carried out to fresh concrete, conductance is carried out to maturing
Rate, thermal conductivity, compression strength, flexural strength, elasticity modulus test carry out shrinkage to concrete, cracking resistance is tested；
S5：Using the surface roughness of atomic force microscope observation concrete, so that the uniformity of its microstructure is characterized,
Concrete broken surface pattern, the chemistry of observation pore structure, distribution of pores and hydrated product are observed with scanning electron microscope
Ingredient, shape characteristic and constituent distribution character calculate the microcosmic elasticity of each component in concrete using nanohardness tester
Modulus and microcosmic toughness, with transmission electron microscope, high resolution electron microscope, X-ray diffraction and X-ray photoelectron
The analysis means such as energy disperse spectroscopy characterize microstructure, object phase composition, Elemental redistribution etc. after concrete hydrating.
Percentage in step S3 is 1%, and the compression strength in step S4 is：1d, 3d or 28d.
Working principle：The low cost simple synthetic method of the compound superstructure chemical functional materials of nonhazardous micro-nano in the present invention
It is the new process characteristic of this research, synthesizing the compound superstructure chemical functional materials of micro-nano by template-free method is always material science
The technological break-through point urgently to be solved in field, since the compound superstructure chemical functional materials of micro-nano have pattern, size, Yi Jijing
The characteristics of type changes, so that its comprehensive performance can change a lot according to actual needs, therefore, designs according to demand and makes
The standby compound superstructure chemical functional materials of micro-nano are to promote early strong, cracking resistance, shrinkage type concrete product effective ways；The present invention
The variation of concrete macro property and microstructure, is realized mixed before and after the compound superstructure chemical functional materials of middle comparison addition micro-nano
Corresponding relationship between solidifying soil product microstructure and macro property is predicted, and then can realize that high performance concrete product designs.
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 (3)
1. a kind of preparation method of strong anti-crack concrete of modified morning, which is characterized in that include the following steps：
S1：By two kinds of means of solution at room temperature phase method and hydro-thermal method/solvent-thermal method, induced with inorganic salts or surfactant
Ostwald maturing process, under conditions of being slowly formed anion based on weakly alkaline environment, " dissolution-forming core-is grown up-Ostwald
Curing " process and " chemical transformation induces Ostwald curing " process synthesize the compound superstructure chemical functional materials of micro-nano；
S2：By changing technological parameter, realize the patterns of the compound superstructure chemical functional materials of micro-nano, scale, geometrical homogenization,
The accurate control of the thickness of shell and the composition of shell and structure；
S3：After carrying out surface treatment appropriate to the compound superstructure chemical functional materials of micro-nano, the compound superjunction of micro-nano is chosen
Structure chemical functional materials quality accounts for the percentage of cement quality, and the compound superstructure chemical functional materials of micro-nano and cement are passed through machine
The dispersion of tool high-speed stirred, sonic oscillation disperse and are dispersed with stirring after mixing with concrete material the preparation of these three dispersing modes
Concrete sample；
S4：Density, air vent content and workability test are carried out to fresh concrete, conductivity, heat are carried out to maturing
Conductance, compression strength, flexural strength, elasticity modulus test carry out shrinkage to concrete, cracking resistance is tested；
S5：Using the surface roughness of atomic force microscope observation concrete, to characterize the uniformity of its microstructure, use
Scanning electron microscope observes concrete broken surface pattern, observation pore structure, distribution of pores and hydrated product chemical component,
Shape characteristic and constituent distribution character, using nanohardness tester calculate in concrete the microcosmic elasticity modulus of each component with
Microcosmic toughness, with transmission electron microscope, high resolution electron microscope, X-ray diffraction and x-ray photoelectron spectroscopy
Microstructure, object phase composition, Elemental redistribution etc. after equal analysis means characterization concrete hydrating.
2. a kind of preparation method of modified morning strong anti-crack concrete according to claim 1, which is characterized in that the step
Percentage in S3 is：0.01%, 0.02%, 0.05%, 0.1%, 0.2%, 0.5% or 1%.
3. a kind of preparation method of modified morning strong anti-crack concrete according to claim 1, which is characterized in that the step
Compression strength in S4 is：1d, 3d or 28d.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102884018A (en) * | 2009-12-17 | 2013-01-16 | 城市房地产中心公司 | Concrete reinforced with hybrid nanomaterials |
| CN104710143A (en) * | 2013-12-12 | 2015-06-17 | 杨南宁 | Foamed concrete |
| CN105272027A (en) * | 2015-09-23 | 2016-01-27 | 江苏苏博特新材料股份有限公司 | Ultra-high performance concrete with compressive strength of 300MPa or more and preparation method |
| CN106673532A (en) * | 2017-01-20 | 2017-05-17 | 河海大学 | Self-sensing nickel nanofiber cement-based composite material |
-
2018
- 2018-05-10 CN CN201810443702.5A patent/CN108911595A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102884018A (en) * | 2009-12-17 | 2013-01-16 | 城市房地产中心公司 | Concrete reinforced with hybrid nanomaterials |
| CN104710143A (en) * | 2013-12-12 | 2015-06-17 | 杨南宁 | Foamed concrete |
| CN105272027A (en) * | 2015-09-23 | 2016-01-27 | 江苏苏博特新材料股份有限公司 | Ultra-high performance concrete with compressive strength of 300MPa or more and preparation method |
| CN106673532A (en) * | 2017-01-20 | 2017-05-17 | 河海大学 | Self-sensing nickel nanofiber cement-based composite material |
Non-Patent Citations (1)
| Title |
|---|
| 中国科学技术协会: "《颗粒学学科发展报告 2009-2010》", 30 April 2010 * |
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Application publication date: 20181130 |