CN112010608A - Manufacturing method of green high-ductility fiber concrete hollow building block - Google Patents
Manufacturing method of green high-ductility fiber concrete hollow building block Download PDFInfo
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- CN112010608A CN112010608A CN202010972355.2A CN202010972355A CN112010608A CN 112010608 A CN112010608 A CN 112010608A CN 202010972355 A CN202010972355 A CN 202010972355A CN 112010608 A CN112010608 A CN 112010608A
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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
- 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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
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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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- 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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Abstract
The invention relates to a method for manufacturing a green high-ductility fiber concrete hollow block, which adopts high-ductility fiber concrete as a raw material to manufacture the hollow block. The high-ductility fiber concrete comprises the components of cement, fly ash, mineral powder, sand, sisal fiber and water; wherein, the cement comprises fly ash, mineral powder, sand and water, the mass percentage is 1: 0.55-0.70: 0.27-0.35: 0.73-0.9: 0.55-0.65; based on the total volume of the cement, the fly ash, the mineral powder, the sand and the water after being uniformly mixed, the volume mixing amount of the sisal fibers is 0.2-1%. The using amount of the industrial waste slag powder and the fly ash is relatively increased, and the relatively reduced using amount of the cement is beneficial to the environment protection of the manufactured high-ductility hollow building block. The reasonable mixing amount of the mineral powder and the fly ash effectively improves the ductility of the cement base. Compared with pva, steel fiber and the like which are used as raw materials for providing bridging stress and playing a role in crack resistance, the sisal fiber is used as a main component for improving crack resistance, the sisal fiber has the characteristics of low cost, greenness and environmental protection, and after the sisal fiber is subjected to alkali treatment, the durability can meet engineering requirements.
Description
Technical Field
The invention relates to a method for manufacturing a green high-ductility fiber concrete hollow block, belonging to the technical field of building products.
Background
In the frame structure, although the filler wall is not a main stress member of the structure, the filler wall serves as a first anti-seismic defense line from the anti-seismic perspective, and plays a role in dissipating seismic energy. More broadly, the energy absorbed by the filler wall is not negligible, especially when the frame structure with filler wall resists lateral action, and it is also beneficial to reduce the reaction of the main frame.
Infill walls in real structures are often built from ordinary concrete hollow blocks, which however do not have tensile strain hardening properties, which causes the infill wall to have a low ductility, which often leads to cracks when the infill wall is subjected to a large lateral action, such as an earthquake, and even more, to a large and wide crack, which may lead to the infill wall collapsing in a serious case. Wherein, the ductility of the common concrete hollow block is low, and the insufficient deformability is an important factor for causing the phenomenon.
Therefore, it is necessary to provide a hollow block having tensile strain hardening characteristics, ductility significantly higher than that of ordinary concrete, and other performance indexes such as tensile strength, compressive strength, durability equivalent to or even superior to that of ordinary concrete, and ductility significantly higher than that of ordinary concrete.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a method for manufacturing a green high-ductility fiber concrete hollow block.
In order to solve the technical problems, the technical scheme of the invention is as follows: a method for manufacturing a green high-ductility fiber concrete hollow block adopts high-ductility fiber concrete as a raw material to manufacture the hollow block.
Preferably, the minimum outer wall thickness of the hollow block is not less than 30mm, the minimum rib thickness is not less than 25mm, and the hollow rate is not less than 25%.
Preferably, the high-ductility fiber concrete comprises the components of cement, fly ash, mineral powder, sand, sisal fiber and water; wherein, the cement comprises fly ash, mineral powder, sand and water, the mass percentage is 1: 0.55-0.70: 0.27-0.35: 0.73-0.9: 0.55-0.65; based on the total volume of the cement, the fly ash, the mineral powder, the sand and the water after being uniformly mixed, the volume mixing amount of the sisal fibers is 0.2-1%.
Preferably, the cement is P.O 42.5.5 ordinary portland cement; the fly ash is I-grade fly ash; the loss on ignition of the ore powder is less than 2.8 percent, and the density is 3.07g/cm36 percent of water content and more than 418m of specific surface area2Per kg; the sand is quartz sand with the grain diameter smaller than 0.3 mm; the sisal fibers have a length of 10-20 mm, a diameter of 100-200 μm, a density of 1.45g/cm, an elastic modulus of 9.4-22 GPa, an elongation at break of about 6%, a tensile strength of 511-635 MPa, a tensile elastic modulus of 9.4-22.0 GPa, and a Young's modulus of 15 GPa.
Preferably, the sisal fibers are subjected to alkali treatment to improve the durability of the sisal fibers in concrete, soaked in a 10% propylene emulsion solution for 24 hours, and then naturally dried for later use after being pressed dry.
Preferably, the high-ductility fiber concrete is added with a TH-W5 high-efficiency water reducing agent with the water reducing rate of more than 30%, and the adding amount of the water reducing agent is 0.8% of the total mass of the fly ash, the mineral powder and the cement.
Preferably, the preparation method of the high-ductility fiber concrete comprises the following steps: after the cement, the silica fume, the fly ash and the sand are uniformly dry-mixed, the water reducing agent and 70 percent of water are added and uniformly stirred; and then adding the sisal fibers, uniformly stirring, adding the rest 30% of water, and uniformly stirring to obtain the high-ductility fiber concrete.
Preferably, the preparation method of the hollow building block comprises the following steps: s1: preparing high-ductility fiber concrete mortar by taking sisal fibers as raw materials; s2: preparing a hollow block test piece by using high-ductility fiber concrete mortar as a raw material; s3: placing the prepared hollow building blocks into a steam curing chamber, controlling the temperature and the humidity, and controlling the temperature to be (34)
2) DEG C, relative humidityControlling the degree to be (90+5)%, taking the hollow building block out of a curing chamber after reaching certain strength, feeding the hollow building block into a stock ground for natural curing for 28 days, and obtaining the formed high-ductility hollow building block.
Compared with the prior art, the invention has the following beneficial effects: the high-ductility fiber concrete is used as a main raw material, the high strength and the high toughness of the high-ductility fiber concrete are fully utilized, the bearing capacity and the ductility of the hollow building block are improved, and meanwhile, the anti-seismic performance of the building block masonry structure is improved.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.
FIG. 2 is a schematic view of a uniaxial tensile test.
FIG. 3 is a schematic diagram of a four-point bending test.
Detailed Description
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1-3, a method for manufacturing a green high-ductility fiber concrete hollow block, which uses high-ductility fiber concrete as a raw material to manufacture the hollow block.
In the embodiment of the invention, the minimum outer wall thickness of the hollow block is not less than 30mm, the minimum rib thickness is not less than 25mm, and the hollow rate is not less than 25%.
In the embodiment of the invention, cement is an important raw material for preparing common concrete blocks, and the use of a large amount of cement is usually at the cost of environmental sacrifice. Therefore, if the usage amount of cement can be reduced, and the usage amount of industrial waste residues such as slag powder and fly ash can be added or improved, the usage amount of cement is relatively reduced, and the high-ductility hollow building block prepared by the method is a green and environment-friendly product. Therefore, the high-ductility fiber concrete comprises the components of cement, fly ash, mineral powder, sand, sisal fiber and water; wherein, the cement comprises fly ash, mineral powder, sand and water, the mass percentage is 1: 0.55-0.70: 0.27-0.35: 0.73-0.9: 0.55-0.65; based on the total volume of the cement, the fly ash, the mineral powder, the sand and the water after being uniformly mixed, the volume mixing amount of the sisal fibers is 0.2-1%.
In the embodiment of the invention, aiming at improving the ductility of the block and achieving the characteristic of multi-crack development, a currently common method is to mix pva fibers and steel fibers into a cement-based material to form high-ductility fiber concrete, however, the pva fibers and the steel fibers are too high in cost and are not suitable for being used in a large amount in concrete blocks. The ductility and the cost are comprehensively considered, the factors of environmental protection and the like are strived for, and the plant fiber (sisal fiber) is used as a raw material for improving the ductility of the building block.
In the embodiment of the invention, the cement is P.O 42.5.5 ordinary portland cement; the fly ash is I-grade fly ash, the main active chemical components are SiO2 and Al2O3, and the fly ash can react with calcium hydroxide generated by cement hydration to generate a gelled product, so that the fly ash plays a role in densely filling concrete; the loss on ignition of the ore powder is less than 2.8 percent, and the density is 3.07g/cm36 percent of water content and more than 418m of specific surface area2Per kg; the sand is quartz sand with the grain diameter smaller than 0.3 mm; the sisal fibers have a length of 10-20 mm, a diameter of 100-200 μm, a density of 1.45g/cm, an elastic modulus of 9.4-22 GPa, an elongation at break of about 6%, a tensile strength of 511-635 MPa, a tensile elastic modulus of 9.4-22.0 GPa, and a Young's modulus of 15 GPa.
In the embodiment of the invention, the sisal fibers are subjected to alkali treatment to improve the durability of the sisal fibers in concrete, soaked in a 10% propylene emulsion solution for 24 hours, and then naturally dried for later use after being pressed dry. The milk-propylene solution has high solid content and is easy to stick together after the fibers are soaked and pressed dry, so the milk-propylene solution is diluted to 10% in the test and is used.
In the embodiment of the invention, the TH-W5 high-efficiency water reducing agent with the water reducing rate of more than 30% is added into the high-ductility fiber concrete, and the adding amount of the water reducing agent is 0.8% of the total mass of the fly ash, the mineral powder and the cement. The function of the cement is to disperse cement particles through surface physical and chemical actions, thereby improving the fluidity of the matrix and reducing the water consumption.
In the embodiment of the invention, the preparation method of the high-ductility fiber concrete comprises the following steps: after cement, silica fume, fly ash and sand are uniformly mixed in a dry mode (about 2 minutes), a water reducing agent and 70 percent of water are added and stirred for 2 minutes; and then adding the sisal fibers, uniformly stirring (4 minutes at a low speed and 4 minutes at a high speed), and finally adding the rest 30% of water, and uniformly stirring to obtain the high-ductility fiber concrete.
In the embodiment of the invention, the preparation method of the hollow building block comprises the following steps: s1: preparing high-ductility fiber concrete mortar by taking sisal fibers as raw materials; s2: preparing a hollow block test piece by using high-ductility fiber concrete mortar as a raw material; s3: placing the prepared hollow building blocks into a steam curing chamber, controlling the temperature and the humidity, and controlling the temperature to be (34)
2) Controlling the temperature and the relative humidity to be (90+5)%, taking out of a curing chamber after reaching certain strength, feeding into a stock ground, and naturally curing for 28 days to obtain the formed high-ductility hollow building block.
In the embodiment of the invention, the main raw material of the hollow block, namely the high-ductility fiber concrete, has unique strain-hardening performance and stronger toughness, the ultimate tensile strain of the concrete is more than 1.5 percent, and various defects caused by the brittleness of the material are overcome; the high-ductility fiber concrete hollow block has the characteristic of multi-crack cracking, after a first crack of the material is generated, the first crack is not gradually enlarged until penetrating as common concrete, but the number of cracks is continuously increased, the width of the crack is not obviously increased, and the width of the saturated multipoint crack is less than 50 mu m, so that the excellent crack control capability of the high-ductility fiber concrete hollow block is very favorable for the requirement of the concrete hollow block on the crack width control, and the damage of the crack generated under the action of an earthquake is effectively reduced; the sisal fiber cement-based material obviously improves the bending resistance, toughness, breaking strength and deformability of the matrix material, and improves the compressive strength to a certain extent. The high-ductility fiber concrete adopted by the invention has the compressive strength of 35-45Mpa, the tensile strength of 4-5Mpa and the flexural strength of 7-9Mpa (which is improved by about 50% compared with that without fiber), has good mechanical properties, is an ecological building material with high ductility, better durability (through alkalization treatment) and higher damage resistance, avoids the brittle failure of the building block, and can obviously improve the deformation capability, the integrity and the seismic resistance of the masonry structure; the high-ductility hollow building block takes high-ductility fiber concrete as a main raw material, so that the bearing capacity, ductility and energy consumption of the building block filled wall are improved, the building block filled wall can be used as a first defense line when a frame-filled wall system encounters an earthquake, and the earthquake resistance and safety of the structure are improved; price comparison, pva: 22 ten thousand per ton, domestic pva: 6 ten thousand per ton, ramie fibers (vegetable fibers): 5.2 ten thousand per ton, sisal fiber: 0.8 ten thousand/ton, so the sisal fiber replaces steel fiber, PVA fiber and the like in the proportion of the high-ductility fiber concrete to play a bridging role, and the cost of the traditional cement-based composite material is greatly reduced; the fiber cement-based composite material adopts a large amount of fly ash to replace part of cement, so that the cement consumption is reduced, and the fiber cement-based composite material is green, economic and environment-friendly. Overall, because sisal fibers are relatively inexpensive and the amount of cement used is reduced, the cost increase is relatively small compared to ordinary concrete blocks (sisal fiber cement-based composite material 500-.
Example 1:
following the technical scheme of the invention, as shown in fig. 1, the size of the high-ductility hollow block in the embodiment is 390mm × 190mm × 190mm, the outer wall thickness is 50mm, the ribs are 45mm, and the hollow rate is 29.76%.
The specific manufacturing process comprises the following steps:
step one, preparing high-ductility fiber concrete mortar by taking sisal fibers as raw materials:
the high-ductility fiber concrete mortar of this example had the following composition: the mortar comprises cement, fly ash, mineral powder, sand, sisal fibers and water, wherein the cement comprises the following components in percentage by mass: fly ash: mineral powder: sand: water =1: 0.55: 0.27:0.73: 0.55; taking the total volume of the cement, the fly ash, the mineral powder, the sand and the water after being uniformly mixed as a base number, wherein the volume mixing amount of the sisal fibers is 0.5%; the cement is P.O 42.5.5 ordinary portland cement; the fly ash is I-grade fly ash; the loss on ignition of the mineral powder is less than 2.8 percent, and the density is 3.07g/cm36 percent of water content and more than 418m of specific surface area2Per kg; the sand is quartz sand with the particle size of less than 0.3 mm; the above-mentionedThe sisal fibers are 10-20 mm in length, 100-200 microns in diameter, 1.45g/cm in density, 9.4-22 GPa in elastic modulus, 6% in elongation at break, 511-635 MPa in tensile strength, 9.4-22.0 GPa in tensile elastic modulus and 15GPa in Young modulus, wherein the sisal fibers are subjected to alkali treatment to improve the durability of the sisal fibers in concrete, soaked in 10% by mass of a propylene emulsion solution for 24 hours, and then naturally dried for later use after being pressed to dry. The milk-propylene solution has high solid content and is easy to stick together after the fibers are soaked and pressed dry, so the milk-propylene solution is diluted to 10% in the test and is used. In addition, the high-ductility fiber concrete of the embodiment is added with the TH-W5 high-efficiency water reducing agent with the water reducing rate of more than 30%, and the adding amount of the water reducing agent is 0.8% of the total mass of the fly ash, the mineral powder and the cement. Wherein the water-cement ratio, the water reducing agent and the fiber addition amount are finely adjusted according to the actual situation on site and the flowability of the primary fiber cement-based composite material.
The configuration process comprises the following steps: firstly, uniformly stirring cement, mineral powder, fly ash and sand, adding a water reducing agent and 70% of water, and stirring for 2 minutes (about 2 minutes); and then adding the sisal fibers, uniformly stirring (4 minutes at a low speed and 4 minutes at a high speed), and finally adding 30% of water, and uniformly stirring to obtain the high-ductility fiber concrete.
And step two, using high-ductility fiber concrete as a raw material, selecting a mould for common concrete blocks with the size of 390mm multiplied by 190mm, and preparing hollow block test pieces by adopting a domestic QKYM3-12 type full-automatic block forming machine.
Step three, placing the test piece blank body and the supporting plate into a steam curing chamber, and controlling the temperature and the humidity, wherein the temperature is controlled to be (34)
2) Controlling the temperature and the relative humidity to be (90+5)%, taking out of a curing chamber after reaching certain strength, feeding into a stock ground, and naturally curing for 28 days to obtain the formed high-ductility hollow building block.
In order to verify various mechanical properties of the high-ductility building block prepared according to the invention, the sisal hemp-ECC obtained according to the invention is subjected to mechanical property test.
(1) Cubic compression test
A cube compression test adopts a test block of 70.7mm multiplied by 70.7mm, a test piece is demoulded after being formed for 24h, the test piece is placed in a standard curing room for 28d, and the test piece is taken out for airing for 3h before the test and is prepared for airing for testing. 3 test blocks are prepared for each group of mixing proportion to complete the compression test. The test indexes are elastic modulus and compressive strength.
(2) Uniaxial tensile test
The uniaxial tension test adopts a test block with the thickness multiplied by the width multiplied by the length =50mm multiplied by 190mm, the test piece is demoulded after 24h, the test piece is placed in a standard curing room 28d, and the test piece is taken out and aired for 3h before the test. 4 test blocks are prepared for each group of mix proportion to complete the tensile test. The test indexes are cracking strength, tensile strength, maximum tensile strain, elastic modulus and fracture energy. The crack propagation after the component test is shown in figure 2.
(3) Four point bending test
A test block with the size of 400mm multiplied by 100mm is adopted in the bending test, the test piece is demoulded after 24h, the test piece is placed in a standard curing room for 28d, and the test piece is taken out 3h before the test and is dried to prepare for the test. Each set of mix ratios was prepared with 3 test blocks to complete the bending test. The test indexes are toughness index, peak load and bending strength. The crack propagation after the test of the test piece is shown in fig. 3.
The sisal hemp-ECC disclosed by the invention is prepared into a test block by the method, the concrete block with the strength grade of MU30 is prepared into a test piece, and the test is carried out under the same condition, and the results are shown in the following table:
comparison table of various performances
The invention is not limited to the above best mode, and any person can obtain the manufacturing method of the green high-ductility fiber concrete hollow block in other various forms under the teaching of the invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (8)
1. A method for manufacturing a green high-ductility fiber concrete hollow block is characterized by comprising the following steps: the hollow building block is made of high-ductility fiber concrete.
2. The method for manufacturing the green high-ductility fiber concrete hollow block according to claim 1, characterized in that: the minimum outer wall thickness of the hollow building block is not less than 30mm, the minimum rib thickness is not less than 25mm, and the hollow rate is not less than 25%.
3. The method for manufacturing the green high-ductility fiber concrete hollow block according to claim 1, characterized in that: the high-ductility fiber concrete comprises the components of cement, fly ash, mineral powder, sand, sisal fiber and water; wherein, the cement comprises fly ash, mineral powder, sand and water, the mass percentage is 1: 0.55-0.70: 0.27-0.35: 0.73-0.9: 0.55-0.65; based on the total volume of the cement, the fly ash, the mineral powder, the sand and the water after being uniformly mixed, the volume mixing amount of the sisal fibers is 0.2-1%.
4. The method for manufacturing the green high-ductility fiber concrete hollow block according to claim 3, characterized in that: the cement is P.O 42.5.5 ordinary portland cement; the fly ash is I-grade fly ash; the loss on ignition of the ore powder is less than 2.8 percent, and the density is 3.07g/cm36 percent of water content and more than 418m of specific surface area2Per kg; the sand is quartz sand with the grain diameter smaller than 0.3 mm; the sisal fibers have a length of 10-20 mm, a diameter of 100-200 μm, a density of 1.45g/cm, an elastic modulus of 9.4-22 GPa, an elongation at break of about 6%, a tensile strength of 511-635 MPa, a tensile elastic modulus of 9.4-22.0 GPa, and a Young's modulus of 15 GPa.
5. The method for manufacturing the green high-ductility fiber concrete hollow block according to claim 4, characterized in that: the durability of the sisal fibers in concrete is improved by carrying out alkali treatment on the sisal fibers, the sisal fibers are soaked in a 10% propylene emulsion solution for 24 hours, and then the sisal fibers are naturally dried for later use after being pressed to dry.
6. The method for manufacturing the green high-ductility fiber concrete hollow block according to claim 4, characterized in that: the high-ductility fiber concrete is added with a TH-W5 high-efficiency water reducing agent with the water reducing rate of more than 30%, and the adding amount of the water reducing agent is 0.8% of the total mass of the fly ash, the mineral powder and the cement.
7. The method for manufacturing the green high-ductility fiber concrete hollow block according to claim 5, characterized in that: the preparation method of the high-ductility fiber concrete comprises the following steps: after the cement, the silica fume, the fly ash and the sand are uniformly dry-mixed, the water reducing agent and 70 percent of water are added and uniformly stirred; and then adding the sisal fibers, uniformly stirring, adding the rest 30% of water, and uniformly stirring to obtain the high-ductility fiber concrete.
8. The method for manufacturing the green high-ductility fiber concrete hollow block according to claim 1, characterized in that: the preparation method of the hollow building block comprises the following steps: s1: preparing high-ductility fiber concrete mortar by taking sisal fibers as raw materials; s2: preparing a hollow block test piece by using high-ductility fiber concrete mortar as a raw material; s3: placing the prepared hollow building blocks into a steam curing chamber, controlling the temperature and the humidity, and controlling the temperature to be (34)
2) Controlling the temperature and the relative humidity to be (90+5)%, taking out of a curing chamber after reaching certain strength, feeding into a stock ground, and naturally curing for 28 days to obtain the formed high-ductility hollow building block.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480255A (en) * | 2021-06-23 | 2021-10-08 | 中德新亚建筑材料有限公司 | High-strength high-ductility concrete |
| CN116462465A (en) * | 2023-04-14 | 2023-07-21 | 湖北工业大学 | Betel nut shell fiber reinforced cement mortar and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2575457A2 (en) * | 1979-02-01 | 1986-07-04 | Marchand Pierre | New material containing lightweight granulates |
| AU6477099A (en) * | 1998-10-16 | 2000-05-08 | Herrera-1, S.A. | Process for the fabrication of blocks with incorporated heat insulation for the construction of buildings and the like |
| US6773500B1 (en) * | 2000-05-31 | 2004-08-10 | Isg Resources, Inc. | Fiber reinforced aerated concrete and methods of making same |
| CN102887690A (en) * | 2012-11-04 | 2013-01-23 | 西安建筑科技大学 | High-ductility hollow building block and fabrication method thereof |
| CN107032744A (en) * | 2017-04-28 | 2017-08-11 | 防城港市海河堤管理站 | A kind of building block and preparation method thereof |
-
2020
- 2020-09-16 CN CN202010972355.2A patent/CN112010608A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2575457A2 (en) * | 1979-02-01 | 1986-07-04 | Marchand Pierre | New material containing lightweight granulates |
| AU6477099A (en) * | 1998-10-16 | 2000-05-08 | Herrera-1, S.A. | Process for the fabrication of blocks with incorporated heat insulation for the construction of buildings and the like |
| US6773500B1 (en) * | 2000-05-31 | 2004-08-10 | Isg Resources, Inc. | Fiber reinforced aerated concrete and methods of making same |
| CN102887690A (en) * | 2012-11-04 | 2013-01-23 | 西安建筑科技大学 | High-ductility hollow building block and fabrication method thereof |
| CN107032744A (en) * | 2017-04-28 | 2017-08-11 | 防城港市海河堤管理站 | A kind of building block and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张同颖，雷冬梅: "丙乳砂浆在混凝土修复中的应用", 《水科学与工程技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480255A (en) * | 2021-06-23 | 2021-10-08 | 中德新亚建筑材料有限公司 | High-strength high-ductility concrete |
| CN116462465A (en) * | 2023-04-14 | 2023-07-21 | 湖北工业大学 | Betel nut shell fiber reinforced cement mortar and preparation method thereof |
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