CN116143455A - Alkali-activated alginate fiber concrete and preparation method thereof - Google Patents
Alkali-activated alginate fiber concrete and preparation method thereof Download PDFInfo
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- CN116143455A CN116143455A CN202111394412.4A CN202111394412A CN116143455A CN 116143455 A CN116143455 A CN 116143455A CN 202111394412 A CN202111394412 A CN 202111394412A CN 116143455 A CN116143455 A CN 116143455A
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- 239000000835 fiber Substances 0.000 title claims abstract description 127
- 239000004567 concrete Substances 0.000 title claims abstract description 113
- 239000003513 alkali Substances 0.000 title claims abstract description 80
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical class O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 45
- 230000007797 corrosion Effects 0.000 claims abstract description 30
- 238000005260 corrosion Methods 0.000 claims abstract description 30
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 14
- -1 polypropylene Polymers 0.000 claims abstract description 14
- 239000000654 additive Substances 0.000 claims abstract description 13
- 239000004743 Polypropylene Substances 0.000 claims abstract description 12
- 229920001155 polypropylene Polymers 0.000 claims abstract description 12
- 229940072056 alginate Drugs 0.000 claims abstract description 10
- 235000010443 alginic acid Nutrition 0.000 claims abstract description 10
- 229920000615 alginic acid Polymers 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 10
- 108010081750 Reticulin Proteins 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000004568 cement Substances 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 239000004576 sand Substances 0.000 claims description 18
- 239000004575 stone Substances 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 241001474374 Blennius Species 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 239000004848 polyfunctional curative Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 12
- 238000012545 processing Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 18
- 239000012615 aggregate Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 6
- 229910021487 silica fume Inorganic materials 0.000 description 5
- 239000010881 fly ash Substances 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- 244000132059 Carica parviflora Species 0.000 description 3
- 235000014653 Carica parviflora Nutrition 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 244000215068 Acacia senegal Species 0.000 description 2
- 229920000084 Gum arabic Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000010489 acacia gum Nutrition 0.000 description 2
- 239000000205 acacia gum Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000005543 nano-size silicon particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002986 polymer concrete Substances 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses alkali-activated alginate fiber concrete and a preparation method thereof, wherein the alkali-activated alginate fiber concrete comprises the following main components: the fiber comprises alginate fiber, chemical fiber, polypropylene reticular fiber, impermeable fiber, basalt fiber and metal fiber. According to the invention, through stirring and processing the concrete material, and then improving the produced concrete by trial stirring and metering, the refinement of the production steps of the alkali-activated alginate fiber concrete can be improved, and meanwhile, a plurality of fibers and additives are mixed in the alkali-activated alginate fiber concrete to form a scientific structural proportion, so that the concrete is more suitable for being used in various severe environments, and the problems that the existing concrete proportion and preparation method are single, the prepared concrete cannot meet the use requirements of various severe environments, the overall strength of the concrete is poor, and the corrosion resistance is low are solved.
Description
Technical field:
the invention relates to the technical field of concrete, in particular to alkali-activated alginate fiber concrete and a preparation method thereof.
The background technology is as follows:
the concrete is a common building material, mainly composed of water, cement and coarse and fine aggregates, and alkali-activated slag concrete is taken as an environment-friendly material, so that CO2 released by cement production can be reduced, slag is waste generated in the iron-making process, but potential activity of the slag concrete can be activated by alkali due to the nature of the slag concrete; chinese patent CN01140233.4 discloses a fiber impervious anti-cracking concrete, which is characterized in that: the components and the mixing amount are (1) ordinary Portland cement; (2) middlings; (3) stones; (4) a water reducing agent; (5) slag powder: slag powder with internal mixing specific surface area of 400+/-20 m < 2 >/Kg is mixed in an amount of 5% -50% by weight of cement, and the optimal mixing amount is 20% -30%; (6) The internal mixing amount of the fly ash is 5-50% of the weight of the cement, and the optimal mixing amount is 40-50%; (7) The internal doping amount of the waterproof agent is 0.5-5.0% of the weight of the cement, and the optimal doping amount is 2.5%; (8) The mixing amount of the expanding agent UEA is 6-12% of the weight of cement, and the optimal mixing amount is 8-10%; (9) The mixing amount of the polypropylene fiber is 0.1kg/m3-2.0kg/m3 of the external mixing amount according to the weight of the cementing material, and the optimal mixing amount is 1kg/m3; the polypropylene fiber is modified bundle fiber, netlike short fiber, monofilament fiber or Dula fiber; the waterproof agent and the expanding agent are mixed alternatively; chinese patent 202010238614.9 discloses a novel fiber reinforced alkali-activated slag concrete material and a preparation method thereof, wherein the concrete material consists of slag, sodium hydroxide, water glass, sand, crushed stone, coal gangue, water, high-efficiency water reducer and basalt fiber. The content of each component is calculated according to mass fraction, and the proportion is as follows: 414 parts of slag, 29 parts of sodium hydroxide, 138 parts of water glass, 515 parts of sand, 717 parts of crushed stone, 239 parts of coal gangue, 166 parts of water, 8 parts of high-efficiency water reducer and 13.3 parts of basalt fiber. The novel concrete material obtained by the invention has good adhesion between basalt fibers and a concrete substrate, and the tensile strength and the crack resistance are obviously improved, compared with the common concrete, because the fibers can reduce the shrinkage of the concrete and inhibit the development of cracks in the concrete, and the concrete can uniformly transfer load when being subjected to external load, thereby avoiding the concentration of internal stress of the concrete and the occurrence of damage, and greatly improving the integral strength of the concrete; chinese patent 2020114144954 discloses an underwater dispersion alkali-resistant polymer concrete, which comprises slag powder, fly ash, coral reef sand, silica fume, steel fibers, gum arabic and water glass solution; the slag powder is preferably S95 grade, the fly ash is preferably I grade, the coral reef sand is preferably 8-15 mm in particle size, the silica fume is preferably 0.1-0.3 nanometer grade, and the sodium silicate modulus is preferably 1.1-1.3; the preparation method comprises the steps of firstly pouring slag powder, fly ash, steel fibers, coral reef sand and silica fume into water glass solution, adding gum arabic after stirring, and obtaining a product after stirring; the Chinese patent 2020115754825 discloses an acid and alkali corrosion resistant alkali-activated concrete material and a preparation method thereof, wherein the acid and alkali corrosion resistant alkali-activated concrete material is prepared from the following raw materials in parts by weight: 50-65 parts of water, 30-37 parts of alkali-activated agent, 60-70 parts of slag, 5-10 parts of silica fume, 5-10 parts of nano silicon dioxide, 10-20 parts of lithium slag, 1-10 parts of fiber, 135-175 parts of fine aggregate and 75-135 parts of coarse aggregate; the fiber is chopped basalt fiber, the length is 6-8mm, and the diameter is 15mm; the alkali excitant is sodium water glass, and the modulus of the alkali excitant is 2.3; the slag is granulated blast furnace slag; the fineness of the lithium slag is 390-410 m 2/kg; the fine aggregate is river sand, and the fineness modulus of the fine aggregate is 2.5-2.9; the coarse aggregate is limestone, the grain diameter range is 5-31mm, the grading is good, and the alkali dissolution rate is less than 0.48g/L; the preparation method of the alkali-activated concrete material resistant to acid-base corrosion comprises the following steps: 1) The raw materials are respectively weighed according to the weight portion; 2) Crushing and screening coarse aggregate by using a jaw crusher; 3) Sequentially adding the fine aggregate, slag, silica fume, nano silicon dioxide, lithium slag and fiber into a stirrer, and starting the stirrer to dry-mix for 1.5-3 minutes at a low speed; then water, alkali excitant and additive are added in turn, and stirring is continued for 0.5 to 1.5 minutes; adding coarse aggregate, and continuously stirring for 0.5-1.5 min to obtain the acid-base-resistant alkali-activated concrete material; the concrete in the prior art and the patent products has single proportioning and preparation method, the prepared concrete has lower splitting tensile strength and flexural strength, can not meet the use requirements of various severe environments, and has poor overall strength and low corrosion resistance; therefore, the invention designs the alkali-activated alginate fiber concrete, through stirring and processing the concrete material and then improving the produced concrete by trial and measurement, the refinement of the production steps of the alkali-activated alginate fiber concrete can be improved, and meanwhile, a plurality of fibers and additives are mixed in the alkali-activated alginate fiber concrete to form a scientific structure proportion, so that the alkali-activated alginate fiber concrete is more suitable for being used in various severe environments, the problems that the existing concrete proportion and preparation method are single, the prepared concrete cannot meet the use requirements of various severe environments, and the concrete has poor overall strength and low corrosion resistance are solved.
The invention comprises the following steps:
in order to solve the problems in the prior art, the invention aims to provide alkali-activated alginate fiber concrete and a preparation method thereof, which have the advantages of permeation resistance, cracking resistance and corrosion resistance, and solve the problems that the existing concrete is single in proportion and preparation method, the prepared concrete cannot meet the use requirements of various severe environments, and the concrete is poor in overall strength and low in corrosion resistance.
In order to achieve the above purpose, the present invention provides the following technical solutions: an alkali-activated alginate fiber concrete and a preparation method thereof, wherein the alkali-activated alginate fiber concrete comprises the following main components: water, fiber, cement, coarse and fine aggregates and alkali.
Preferably, the fiber is composed of alginate fiber, chemical fiber, polypropylene net fiber, impermeable fiber, basalt fiber and metal fiber, and the coarse and fine aggregate is composed of coarse sand, broken stone and rubble.
As a preferable mode of the invention, the content of each component is as follows, based on 2500kg of alkali-activated alginate fiber concrete: 400kg of cement, 25kg of alkali, 2-3kg of alginate fibers, 2-3kg of chemical fibers, 5-6kg of polypropylene reticular fibers, 5-6kg of impermeable fibers, 2-3kg of basalt fibers, 2-3kg of metal fibers, 600kg of coarse sand, 800kg of crushed stone, 460kg of rubble and water supplement of 2500%.
As the preferable characteristic of the invention, the alkali-activated alginate fiber concrete is internally added with an additive, and the additive consists of an early strength agent, a retarder, an air entraining agent, an expanding agent, an antifreezing agent, a hardening agent, a corrosion-resistant cementing agent and corrosion-resistant powder.
The alkali-activated alginate fiber concrete contains 2-3kg of early strength agent, 3kg of retarder, 2kg of air entraining agent, 2kg of expanding agent, 2kg of antifreezing agent, 3kg of hardening agent, 5kg of corrosion-resistant cementing agent and 10kg of corrosion-resistant powder per 2500kg of alkali-activated alginate fiber concrete.
As the preferable alkali-activated alginate fiber concrete and the preparation method thereof, the invention comprises the following steps: step a), trial mixing; step b) metering; step c) stirring; step d) transportation; step e) storing; step f) treatment uses:
step a) trial mixing: preparing a small amount of concrete according to the production proportion for detection;
step b) metering: after the detection is qualified, cement, alkali, alginate fibers, chemical fibers, polypropylene reticular fibers, impermeable fibers, basalt fibers, metal fibers, coarse sand, broken stone, rubble and water are put into a stirrer in proportion, and the metering deviation is strictly controlled within an allowable range;
step c) stirring: starting a stirrer to stir raw materials in the stirrer, sequentially adding retarder, air entraining agent, antifreezing agent and corrosion-resistant powder in the stirring process, wherein the dry stirring of the fiber, cement and coarse and fine aggregates is not less than one minute, adding the fiber into the stirrer for three times during stirring, adding water to wet-stir for thirty-five seconds, and waiting for uniform stirring for the total stirring time to be not more than six minutes to obtain alkali-activated seaweed fiber concrete;
step d) transportation: before transportation, the alkali-activated alginate fiber concrete needs to be reversely discharged to clean accumulated water in the drum, and is rapidly transported and stored in a construction site concrete tank in a constant temperature state;
step e) storing: continuous stirring is needed in the storage process, the slump is measured in real time, and when the slump of the alkali-activated seaweed fiber concrete in the concrete tank is too high, a proper amount of efficient alkali agent is added;
step f) treatment uses: when the alkali-activated alginate fiber concrete is required to be used, the concrete is subjected to secondary stirring by a stirrer, and an early strength agent, an expanding agent, a hardening agent and a corrosion-resistant cementing agent are added in the stirring process, so that the concrete can be poured for use after being uniformly stirred.
As a preferred embodiment of the present invention, the test mix of step a) is performed, and the concrete test items consist of strength test, setting time test, air content test, corrosion resistance test and water impermeability test.
Preferably, in the present invention, the metering in step b) is performed, the metering deviation of the fiber, cement, crushed stone, rubble, water and additives is less than 2.0%, and the metering deviation of coarse sand is less than 3.0%.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through stirring and processing the concrete material, and then improving the produced concrete by trial stirring and metering, the refinement of the production steps of the alkali-activated alginate fiber concrete can be improved, and meanwhile, a plurality of fibers and additives are mixed in the alkali-activated alginate fiber concrete to form a scientific structural proportion, so that the concrete is more suitable for being used in various severe environments, and the problems that the existing concrete proportion and preparation method are single, the prepared concrete cannot meet the use requirements of various severe environments, the overall strength of the concrete is poor, and the corrosion resistance is low are solved.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides alkali-activated alginate fiber concrete, which comprises the following main components: water, fiber, cement, coarse and fine aggregates and alkali.
The invention is further provided with: the fiber consists of alginate fiber, chemical fiber, polypropylene reticular fiber, impermeable fiber, basalt fiber and metal fiber, and the coarse and fine aggregate consists of coarse sand, broken stone and rubble.
The invention is further provided with: the content of each component is calculated by per 2500kg of alkali-activated alginate fiber concrete: 400kg of cement, 25kg of alkali, 2-3kg of alginate fibers, 2-3kg of chemical fibers, 5-6kg of polypropylene reticular fibers, 5-6kg of impermeable fibers, 2-3kg of basalt fibers, 2-3kg of metal fibers, 600kg of coarse sand, 800kg of crushed stone, 460kg of rubble and water supplement of 2500%.
The invention is further provided with: the alkali-activated alginate fiber concrete is internally added with an additive, wherein the additive consists of an early strength agent, a retarder, an air entraining agent, an expanding agent, an antifreezing agent, a hardening agent, a corrosion-resistant cementing agent and corrosion-resistant powder.
The invention is further provided with: the alkali-activated seaweed fiber concrete comprises 2-3kg of early strength agent, 3kg of retarder, 2kg of air entraining agent, 2kg of expanding agent, 2kg of antifreezing agent, 3kg of hardener, 5kg of corrosion-resistant cementing agent and 10kg of corrosion-resistant powder per 2500kg of alkali-activated seaweed fiber concrete.
The invention is further provided with: the preparation method of the alkali-activated alginate fiber concrete comprises the following steps: step a), trial mixing; step b) metering; step c) stirring; step d) transportation; step e) storing; step f) treatment uses:
step a) trial mixing: preparing a small amount of concrete according to the production proportion for detection;
step b) metering: after the detection is qualified, cement, alkali, alginate fibers, chemical fibers, polypropylene reticular fibers, impermeable fibers, basalt fibers, metal fibers, coarse sand, broken stone, rubble and water are put into a stirrer in proportion, and the metering deviation is strictly controlled within an allowable range;
step c) stirring: starting a stirrer to stir raw materials in the stirrer, sequentially adding retarder, air entraining agent, antifreezing agent and corrosion-resistant powder in the stirring process, and carrying out dry stirring on fiber, cement and coarse and fine aggregates for no less than one minute, adding the fiber into the stirrer for three times during stirring, finally adding water to wet-stir for thirty-five seconds, wherein the total stirring time is no more than six minutes, and waiting for uniform stirring to obtain alkali-activated seaweed fiber concrete;
step d) transportation: before transportation, the alkali-activated alginate fiber concrete needs to be reversely discharged to clean accumulated water in the drum, and is rapidly transported and stored in a construction site concrete tank in a constant temperature state;
step e) storing: continuous stirring is needed in the storage process, the slump is measured in real time, and when the slump of the alkali-activated seaweed fiber concrete in the concrete tank is too high, a proper amount of efficient alkali agent is added;
step f) treatment uses: when the alkali-activated alginate fiber concrete is required to be used, the concrete is subjected to secondary stirring by a stirrer, and an early strength agent, an expanding agent, a hardening agent and a corrosion-resistant cementing agent are added in the stirring process, so that the concrete can be poured for use after being uniformly stirred.
The invention is further provided with: step a) test mixing, wherein the concrete detection project comprises strength detection, setting time detection, gas content detection, corrosion resistance detection and water impermeability detection.
The invention is further provided with: and b), metering, wherein the metering deviation of fibers, cement, broken stone, rubble, water and additives is less than 2.0%, and the metering deviation of coarse sand is less than 3.0%.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An alkali-activated alginate fiber concrete, which is characterized in that: the alkali-activated alginate fiber concrete comprises the following main components: water, fiber, cement, coarse and fine aggregates and alkali.
2. An alkali-activated alginate fiber concrete according to claim 1, wherein: the fiber consists of alginate fiber, chemical fiber, polypropylene reticular fiber, impermeable fiber, basalt fiber and metal fiber, and the coarse and fine aggregate consists of coarse sand, broken stone and rubble.
3. An alkali-activated alginate fiber concrete according to claim 2, wherein: the content of each component is as follows, based on 2500kg of alkali-activated alginate fiber concrete: 400kg of cement, 25kg of alkali, 2-3kg of alginate fibers, 2-3kg of chemical fibers, 5-6kg of polypropylene reticular fibers, 5-6kg of impermeable fibers, 2-3kg of basalt fibers, 2-3kg of metal fibers, 600kg of coarse sand, 800kg of crushed stone, 460kg of rubble and water supplement of 2500%.
4. An alkali-activated alginate fiber concrete according to claim 3, wherein: the alkali-activated alginate fiber concrete is characterized in that an additive is added into the alkali-activated alginate fiber concrete, and the additive consists of an early strength agent, a retarder, an air entraining agent, an expanding agent, an antifreezing agent, a hardening agent, a corrosion-resistant cementing agent and corrosion-resistant powder.
5. An alkali-activated alginate fiber concrete according to claim 4, wherein: based on 2500kg of alkali-activated alginate fiber concrete, the alkali-activated alginate fiber concrete contains 2-3kg of early strength agent, 3kg of retarder, 2kg of air entraining agent, 2kg of expanding agent, 2kg of antifreezing agent, 3kg of hardener, 5kg of corrosion-resistant cementing agent and 10kg of corrosion-resistant powder.
6. An alkali-activated alginate fiber concrete according to claim 1, wherein: the preparation method comprises the following steps: step a), trial mixing; step b) metering; step c) stirring; step d) transportation; step e) storing; step f) treatment uses:
step a) trial mixing: preparing a small amount of concrete according to the production proportion for detection;
step b) metering: after the detection is qualified, cement, alkali, alginate fibers, chemical fibers, polypropylene reticular fibers, impermeable fibers, basalt fibers, metal fibers, coarse sand, broken stone, rubble and water are put into a stirrer in proportion, and the metering deviation is strictly controlled within an allowable range;
step c) stirring: starting a stirrer to stir raw materials in the stirrer, sequentially adding retarder, air entraining agent, antifreezing agent and corrosion-resistant powder in the stirring process, wherein the dry stirring of the fiber, cement and coarse and fine aggregates is not less than one minute, adding the fiber into the stirrer for three times during stirring, adding water to wet-stir for thirty-five seconds, and waiting for uniform stirring for the total stirring time to be not more than six minutes to obtain alkali-activated seaweed fiber concrete;
step d) transportation: before transportation, the alkali-activated alginate fiber concrete needs to be reversely discharged to clean accumulated water in the drum, and is rapidly transported and stored in a construction site concrete tank in a constant temperature state;
step e) storing: continuous stirring is needed in the storage process, the slump is measured in real time, and when the slump of the alkali-activated seaweed fiber concrete in the concrete tank is too high, a proper amount of efficient alkali agent is added;
step f) treatment uses: when the alkali-activated alginate fiber concrete is required to be used, the concrete is subjected to secondary stirring by a stirrer, and an early strength agent, an expanding agent, a hardening agent and a corrosion-resistant cementing agent are added in the stirring process, so that the concrete can be poured for use after being uniformly stirred.
7. The method for preparing alkali-activated alginate fiber concrete according to claim 6, wherein the method comprises the following steps: the step a) is a trial mixing, and the concrete detection project consists of strength detection, setting time detection, gas content detection, corrosion resistance detection and water impermeability detection.
8. The method for preparing alkali-activated alginate fiber concrete according to claim 6, wherein the method comprises the following steps: and b), metering, wherein the metering deviation of the fiber, the cement, the broken stone, the sheet stone, the water and the additive is less than 2.0%, and the metering deviation of the coarse sand is less than 3.0%.
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| CN110407543A (en) * | 2019-08-29 | 2019-11-05 | 中国建筑第五工程局有限公司 | A kind of underground anti-corrosion concrete composition |
| CN113372087A (en) * | 2021-07-19 | 2021-09-10 | 深圳市东大洋水泥制品有限公司 | Early-strength high-impermeability concrete and preparation method thereof |
-
2021
- 2021-11-23 CN CN202111394412.4A patent/CN116143455A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110407543A (en) * | 2019-08-29 | 2019-11-05 | 中国建筑第五工程局有限公司 | A kind of underground anti-corrosion concrete composition |
| CN113372087A (en) * | 2021-07-19 | 2021-09-10 | 深圳市东大洋水泥制品有限公司 | Early-strength high-impermeability concrete and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 项翥行著: ""混凝土配合比计算图表"", 30 April 1980, 中国建筑工业出版社, pages: 62 - 63 * |
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