CN113511853A - Ecological water-permeable foam wheat straw concrete and preparation method thereof - Google Patents
Ecological water-permeable foam wheat straw concrete and preparation method thereof Download PDFInfo
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- CN113511853A CN113511853A CN202110937536.6A CN202110937536A CN113511853A CN 113511853 A CN113511853 A CN 113511853A CN 202110937536 A CN202110937536 A CN 202110937536A CN 113511853 A CN113511853 A CN 113511853A
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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
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/248—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork from specific plants, e.g. hemp fibres
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The invention relates to the technical field of ecological concrete, and discloses ecological water-permeable foam wheat straw concrete and a preparation method thereof, wherein the ecological water-permeable foam wheat straw concrete comprises the following components in parts by weight: 10-35 parts of cement, 8-16 parts of sintered slag powder, 10-25 parts of light recycled crushed aggregate, 1-5 parts of foaming agent, 8-28 parts of water, 20-55 parts of cactus mucus, 10-35 parts of wheat straw powder and 10-30 parts of photocatalyst. The cactus mucilage is added in the preparation process, so that the water quality can be fully and preliminarily purified in the use process of the pervious concrete, the cost is low, the method is safe and environment-friendly, and the cactus mucilage can also improve the viscosity of the concrete; the addition of the photocatalyst can ensure that the prepared concrete pavement has the effect of purifying air by photocatalyst reaction, is favorable for purifying the tail gas of a motor vehicle and is also favorable for the health state of surrounding vegetation and residents.
Description
Technical Field
The invention relates to the technical field of ecological concrete, in particular to ecological water-permeable foam wheat straw concrete and a preparation method thereof.
Background
The sponge city is a new generation of city rainfall flood management concept, and the principle of construction is to maximally realize accumulation, permeation and purification of rainwater in an urban area on the premise of ensuring the safety of urban drainage and waterlogging prevention. The ground and the base course of the city are paved in a water-permeable mode, the circulation of water on the ground can be naturally achieved, a large amount of rainwater can be stored, the frequency of urban flood disasters is reduced, and a good water resource recycling system is formed. The traditional permeable pavement base course generally adopts graded broken stones, and the crushed stones are used as drainage layers, so that the demand on natural gravel resources is large, and large-scale machinery is often needed in construction, so that the construction difficulty is increased. As a light material with a micro, homogeneous and closed pore structure, the foam concrete is widely applied to the fields of building heat preservation and energy conservation.
However, the inventor finds that the prior art still has at least the following defects through the research:
first, the thickening agents used in the prior art contain a large amount of harmful substances, and the slow release of the harmful substances affects the health of surrounding residents and vegetation.
Secondly, the ecological water-permeable foam wheat straw concrete in the prior art does not have a certain substantial purification function, so that the water quality entering an underground pipe network is poor.
Disclosure of Invention
The invention aims to provide ecological water-permeable foam wheat straw concrete and a preparation method thereof, and solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an ecological water-permeable foam wheat straw concrete comprises the following components in parts by weight:
10-35 parts of cement, 8-16 parts of sintered slag powder, 10-25 parts of light recycled aggregate, 1-5 parts of foaming agent, 8-28 parts of water, 20-55 parts of cactus mucus, 10-35 parts of wheat straw powder and 10-30 parts of photocatalyst.
As a preferred embodiment of the invention, the composition comprises the following components in parts by weight:
20 parts of cement, 12 parts of sintered slag powder, 18 parts of light recycled aggregate, 3 parts of foaming agent, 16 parts of water, 50 parts of cactus mucus, 20 parts of wheat straw powder and 15 parts of photocatalyst.
As a preferred embodiment of the invention, the sintering slag powder is prepared by crushing and screening sintering slag broken bricks, and the granularity of the sintering slag powder is 1-4 mm.
As a preferred embodiment of the invention, the light recycled crushed aggregate is prepared by crushing, screening and separating foamed concrete bricks, and the particle size of the light recycled crushed aggregate is 3-6 mm.
As a preferred embodiment of the invention, the cactus mucus is prepared by pulping fresh cactus for 30min by a pulping machine.
In a preferred embodiment of the present invention, the wheat straw powder is prepared by crushing waste wheat straw, filtering and sieving.
As a preferred embodiment of the invention, the preparation method is applied to ecological water-permeable foam wheat straw concrete, and is characterized in that: comprises the following preparation steps:
s1: weighing 20 parts of cement, 12 parts of sintered slag powder, 18 parts of light recycled aggregate, 3 parts of foaming agent, 16 parts of water, 50 parts of cactus mucus, 20 parts of wheat straw powder and 15 parts of photocatalyst according to the weight ratio, and then independently carrying out weighing;
s2: putting the sintered slag powder, the light recycled crushed aggregates and the wheat straw powder into a mixing tank in batches, putting a layer of light recycled crushed aggregates after putting a layer of sintered slag powder, putting a layer of wheat straw powder, and stirring and mixing for 20min by using a stirrer;
s3: adding a certain amount of water into the base material mixed in the step 2, and stirring and mixing for 15min for later use;
s4: adding cement, a foaming agent, a photocatalyst and a cactus liquid into the mixed liquid obtained in the step (3), and stirring for 25min at the stirring speed of 300 r/min;
s5: pouring the concrete prepared in the step 4 out of the pouring pavement.
In a preferred embodiment of the present invention, the stirring temperature in step 2 and step 3 is 40 ℃, and the stirring speed is 260 r/min.
Compared with the prior art, the invention has the following beneficial effects:
1. the cactus mucilage is added in the preparation process, so that the water quality can be fully and primarily purified in the use process of the pervious concrete, the cost is low, the cactus mucilage is safe and environment-friendly, the viscosity of the concrete can be improved, and the cactus mucilage is formaldehyde-free, environment-friendly and efficient.
2. The photocatalyst is added to the prepared concrete pavement, so that the prepared concrete pavement can generate the effect of purifying air compared with the effect of carrying out photocatalyst reaction, the purification of the tail gas of a motor vehicle is facilitated, and the health state of surrounding vegetation and residents is also facilitated.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easily understood, the invention is further explained by combining the specific embodiments.
The first embodiment is as follows:
the invention provides a technical scheme that: an ecological water-permeable foam wheat straw concrete comprises the following components in parts by weight:
20 parts of cement, 12 parts of sintered slag powder, 18 parts of light recycled aggregate, 3 parts of foaming agent, 16 parts of water, 50 parts of cactus mucus, 20 parts of wheat straw powder and 15 parts of photocatalyst.
In this embodiment, the sintering slag powder is prepared after smashing and screening for the broken brick of sintering slag, and the granularity of sintering slag powder is 1 ~ 4mm, the light recovery crushed aggregate is that the foaming concrete fragment of brick protects through breakage, smashing and screening separation and makes, and the granularity of light recovery crushed aggregate is 3 ~ 6mm, the cactus mucus is beaten by fresh cactus through the beating machine and is handled 30min, the wheat straw powder is made by abandonment wheat straw stir after smashing, filtration and sieve.
After detection, the water quality purification tds value of the ecological water-permeable foam wheat straw concrete prepared by the embodiment is 20, the permeability coefficient is 1.8cm/s, and the strength grade is not lower than MU 5.
Example 2:
the invention provides a technical scheme different from the embodiment 1: an ecological water-permeable foam wheat straw concrete comprises the following components in parts by weight:
16 parts of cement, 15 parts of sintered slag powder, 20 parts of light recycled aggregate, 4 parts of foaming agent, 20 parts of water, 50 parts of cactus mucus, 20 parts of wheat straw powder and 15 parts of photocatalyst.
In this embodiment, the sintering slag powder is prepared after smashing and screening for the broken brick of sintering slag, and the granularity of sintering slag powder is 1 ~ 4mm, the light recovery crushed aggregate is that the foaming concrete fragment of brick protects through breakage, smashing and screening separation and makes, and the granularity of light recovery crushed aggregate is 3 ~ 6mm, the cactus mucus is beaten by fresh cactus through the beating machine and is handled 30min, the wheat straw powder is made by abandonment wheat straw stir after smashing, filtration and sieve.
After detection, the water quality purification tds value of the ecological water-permeable foam wheat straw concrete prepared by the embodiment is 15, the permeability coefficient is 1.4cm/s, and the strength grade is not lower than MU 5.
Example three:
the invention provides a technical scheme that: an ecological water-permeable foam wheat straw concrete comprises the following components in parts by weight:
14 parts of cement, 16 parts of sintered slag powder, 22 parts of light recycled aggregate, 2 parts of foaming agent, 28 parts of water, 50 parts of cactus mucus, 20 parts of wheat straw powder and 15 parts of photocatalyst.
In this embodiment, the sintering slag powder is prepared after smashing and screening for the broken brick of sintering slag, and the granularity of sintering slag powder is 1 ~ 4mm, the light recovery crushed aggregate is that the foaming concrete fragment of brick protects through breakage, smashing and screening separation and makes, and the granularity of light recovery crushed aggregate is 3 ~ 6mm, the cactus mucus is beaten by fresh cactus through the beating machine and is handled 30min, the wheat straw powder is made by abandonment wheat straw stir after smashing, filtration and sieve.
After detection, the water quality purification tds value of the ecological water-permeable foam wheat straw concrete prepared by the embodiment is 11, the permeability coefficient is 1.2cm/s, and the strength grade is not lower than MU 5.
Comparative example:
an ecological water-permeable foam wheat straw concrete comprises the following components in parts by weight:
14 parts of cement, 16 parts of sintered slag powder, 22 parts of light recycled crushed aggregate, 2 parts of foaming agent, 28 parts of water and 20 parts of wheat straw powder.
In this embodiment, the sintering slag powder is made after smashing and screening for the broken brick of sintering slag, and the granularity of sintering slag powder is 1 ~ 4mm, the light is retrieved the crushed aggregate and is protected through crushing, crushing and screening separation and make for the foaming concrete fragment of brick, and the granularity of light retrieval crushed aggregate is 3 ~ 6mm, wheat straw powder is made by abandonment wheat straw stir after garrulous, filtration and sieve.
After detection, the water quality purification tds value of the ecological water-permeable foam wheat straw concrete prepared by the comparative example is 4.1, the permeability coefficient is 0.2cm/s, and the strength grade is not lower than MU 5.
Concrete properties are as in table 1:
TABLE 1
It can be understood from table 1 that the data of the water quality purification value, the permeability coefficient and the formaldehyde content of the reinforced concrete are obviously improved by adding the cactus mucilage and the photocatalyst into the concrete raw material compared with the data of the concrete prepared by not adding the cactus mucilage and the photocatalyst in the comparative example.
It should be noted that the invention relates to an ecological water permeability foam wheat straw concrete and a preparation method thereof, each part is a universal standard part or a part known by technicians in the field, and the structure and the principle of the concrete can be known by technicians in the field through technical manuals or conventional experimental methods.
The working principle is as follows: firstly: weighing 20 parts of cement, 12 parts of sintered slag powder, 18 parts of light recycled crushed aggregate, 3 parts of foaming agent, 16 parts of water, 50 parts of cactus mucus, 20 parts of wheat straw powder and 15 parts of photocatalyst according to the weight proportion, and then independently carrying out weighing;
secondly, the method comprises the following steps: putting the sintered slag powder, the light recycled crushed aggregates and the wheat straw powder into a mixing tank in batches, putting a layer of light recycled crushed aggregates after putting a layer of sintered slag powder, putting a layer of wheat straw powder, and stirring and mixing for 20min by using a stirrer;
then: adding a certain amount of water into the base material mixed in the step 2, and stirring and mixing for 15min for later use;
and then: adding cement, a foaming agent, a photocatalyst and a cactus solution into the mixed material liquid obtained in the step (3), and stirring for 25min at the stirring speed of 300 r/min;
and finally: pouring the concrete prepared in the step 4 out of the pouring pavement.
While there have been shown and described what are at present considered the fundamental principles of the invention and its essential features and advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description of the embodiments is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides an ecological permeability foam wheat straw concrete which characterized in that: comprises the following components in parts by weight:
10-35 parts of cement, 8-16 parts of sintered slag powder, 10-25 parts of light recycled crushed aggregate, 1-5 parts of foaming agent, 8-28 parts of water, 20-55 parts of cactus mucus, 10-35 parts of wheat straw powder and 10-30 parts of photocatalyst.
2. The ecological water-permeable foam wheat straw concrete according to claim 1, which is characterized in that: the composition comprises the following components in parts by weight:
20 parts of cement, 12 parts of sintered slag powder, 18 parts of light recycled aggregate, 3 parts of foaming agent, 16 parts of water, 50 parts of cactus mucus, 20 parts of wheat straw powder and 15 parts of photocatalyst.
3. The ecological water-permeable foam wheat straw concrete according to claim 1, which is characterized in that: the sintering slag powder is prepared by crushing and screening sintering slag broken bricks, and the granularity of the sintering slag powder is 1-4 mm.
4. The ecological water-permeable foam wheat straw concrete according to claim 1, which is characterized in that: the light recycled aggregate is prepared by crushing, screening, separating and protecting a foamed concrete brick, and the particle size of the light recycled aggregate is 3-6 mm.
5. The ecological water-permeable foam wheat straw concrete according to claim 1, which is characterized in that: pulping fresh radix et caulis Opuntiae Dillenii mucus with pulping machine for 30 min.
6. The ecological water-permeable foam wheat straw concrete according to claim 1, which is characterized in that: the wheat straw powder is prepared by stirring waste wheat straws, filtering and screening.
7. The ecological water-permeable foam wheat straw concrete applied to any one of claims 1 to 6, and the preparation method of the ecological water-permeable foam wheat straw concrete is characterized in that: the preparation method comprises the following preparation steps:
s1: weighing 20 parts of cement, 12 parts of sintered slag powder, 18 parts of light recycled aggregate, 3 parts of foaming agent, 16 parts of water, 50 parts of cactus mucus, 20 parts of wheat straw powder and 15 parts of photocatalyst according to the weight ratio, and then independently carrying out weighing;
s2: putting the sintered slag powder, the light recycled crushed aggregates and the wheat straw powder into a mixing tank in batches, putting a layer of light recycled crushed aggregates after putting a layer of sintered slag powder, putting a layer of wheat straw powder, and stirring and mixing for 20min by using a stirrer;
s3: adding a certain amount of water into the base material mixed in the step 2, and stirring and mixing for 15min for later use;
s4: adding cement, a foaming agent, a photocatalyst and a cactus liquid into the mixed liquid obtained in the step (3), and stirring for 25min at the stirring speed of 300 r/min;
s5: pouring the concrete prepared in the step 4 out of the pouring pavement.
8. The preparation method of the ecological water permeable foam wheat straw concrete according to claim 7, which is characterized in that: the stirring temperature in the step 2 and the step 3 is 40 ℃, and the stirring speed is 260 r/min.
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| CN109809773A (en) * | 2019-04-01 | 2019-05-28 | 中国城市科学研究会 | A kind of eco-concrete and the preparation method and application thereof |
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2021
- 2021-08-16 CN CN202110937536.6A patent/CN113511853A/en not_active Withdrawn
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| CN112142393A (en) * | 2020-09-27 | 2020-12-29 | 南京航空航天大学 | Recycled lightweight aggregate pervious concrete and preparation method thereof |
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Application publication date: 20211019 |