CN115286327B - Quick-hardening micro-expansion high-crack-resistance maintenance material and preparation method thereof - Google Patents
Quick-hardening micro-expansion high-crack-resistance maintenance material and preparation method thereof Download PDFInfo
- Publication number
- CN115286327B CN115286327B CN202111489844.3A CN202111489844A CN115286327B CN 115286327 B CN115286327 B CN 115286327B CN 202111489844 A CN202111489844 A CN 202111489844A CN 115286327 B CN115286327 B CN 115286327B
- Authority
- CN
- China
- Prior art keywords
- parts
- maintenance
- early
- water
- strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000463 material Substances 0.000 title claims abstract description 72
- 238000012423 maintenance Methods 0.000 title claims abstract description 71
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 230000000694 effects Effects 0.000 claims abstract description 37
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 36
- 239000011707 mineral Substances 0.000 claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 29
- 244000198134 Agave sisalana Species 0.000 claims abstract description 26
- 229920005610 lignin Polymers 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000013530 defoamer Substances 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims abstract description 15
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000292 calcium oxide Substances 0.000 claims abstract description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011325 microbead Substances 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 5
- 239000002893 slag Substances 0.000 claims description 48
- 235000010755 mineral Nutrition 0.000 claims description 35
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 29
- 229910052748 manganese Inorganic materials 0.000 claims description 29
- 239000011572 manganese Substances 0.000 claims description 29
- 239000002994 raw material Substances 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010881 fly ash Substances 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000000498 ball milling Methods 0.000 claims description 15
- 239000010453 quartz Substances 0.000 claims description 15
- 238000007873 sieving Methods 0.000 claims description 15
- 239000011324 bead Substances 0.000 claims description 14
- 238000007667 floating Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 5
- 238000010907 mechanical stirring Methods 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 229920005646 polycarboxylate Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 2
- 229910003002 lithium salt Inorganic materials 0.000 claims description 2
- 159000000002 lithium salts Chemical class 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 239000000176 sodium gluconate Substances 0.000 claims description 2
- 229940005574 sodium gluconate Drugs 0.000 claims description 2
- 235000012207 sodium gluconate Nutrition 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 8
- 239000004567 concrete Substances 0.000 abstract description 7
- 238000011160 research Methods 0.000 abstract description 5
- 230000008439 repair process Effects 0.000 abstract description 3
- 235000011624 Agave sisalana Nutrition 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 239000011863 silicon-based powder Substances 0.000 description 7
- 239000006227 byproduct Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 235000020610 powder formula Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011882 ultra-fine particle 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
- 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
- C04B28/06—Aluminous cements
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- 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
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
- C04B18/082—Cenospheres
-
- 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
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—Steelmaking slags, converter slags
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/144—Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
-
- 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
-
- 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
Abstract
The invention provides a rapid hardening micro-expansion high-crack-resistance maintenance material and a preparation method thereof, belonging to the technical field of concrete materials. Comprises 90-110 parts of sulphoaluminate cement, 30-40 parts of high-activity superfine early-strength mineral admixture, 1-5 parts of calcium oxide expanding agent, 5-10 parts of microbeads, 2-7 parts of silica fume, 50-80 parts of river sand, 1-3 parts of nano lignin fiber and 2-5 parts of sisal hemp fiber, 6-8 parts of polycarboxylic acid powder water reducer, 1-3 parts of siloxane defoamer, 0.1-0.3 part of retarder and 0.01-0.06 part of early strength agent according to parts by weight. The maintenance material is used for maintenance and reinforcement, so that the open traffic time can be shortened, the maintenance efficiency and level can be improved, and the time cost can be reduced. The requirements of large and small maintenance projects such as road repair, bridge expansion joint maintenance, municipal well lid maintenance and the like on research pouring, vibrating, plastering and maintenance can be met.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a rapid hardening micro-expansion high-crack-resistance maintenance material and a preparation method thereof.
Background
In recent years, along with the rapid development of the construction of the infrastructure in China, the established expressways and bridges at present gradually enter the maintenance stage, and the maintenance engineering quantity of the expressways and bridges can be expected to be greatly increased in the future. The mass infrastructure gradually enters a maintenance stage, however, the common cement-based material has the defects of slow hardening and long strength rising period, and the problem of traffic jam caused by no limit or limit of running during engineering maintenance and reinforcement cannot be met; the quick hardening concrete prepared by the quick hardening early strength cement solves the problems of setting time and early strength, but has poor maintenance and reinforcement effects caused by the fact that the quick hardening cement is easy to crack due to the large heat of hydration of the quick hardening cement, and the service life of the quick hardening concrete cannot reach the expected effect. In view of the above, it is necessary to develop a rapid hardening micro-expansion high crack resistance maintenance material, which solves the key core problems existing in the application of the traditional maintenance reinforcement material. The rapid hardening micro-expansion high-crack-resistance maintenance material is adopted for maintenance construction, and the vehicle can be directly started 3 hours after construction, so that the time cost of traffic jam caused by maintenance is saved, and the rapid hardening micro-expansion high-crack-resistance maintenance material has a wide application prospect. Slag, steel slag, fly ash, silica fume and the like are common admixture, and research at the present stage is also directed at the admixture, however, the academic field does not have a unified theory on the strengthening mechanism of the admixture, and higher requirements are put on the research of improving the concrete structure. In general, high-performance cement-based materials mainly consist of cement, ultrafine particles, fine aggregates, fibers and a high-efficiency water reducer. However, different raw material compositions, different grinding fineness, different mixing amounts of exciting agents, different dispersing agent amounts and the like have obvious influence on indexes such as water-required property, grain composition, activity index, mechanical property and the like of the superfine mineral admixture; under the conditions that the influence trend is not determined and the reinforcement mechanism is not determined, the superfine powder formula with low water demand, good particle size distribution and high activity index and the preparation process are screened, and the research on a close-packed system of superfine powder and cement is still difficult.
Disclosure of Invention
Aiming at the requirements of large and small maintenance projects such as road repair, bridge expansion joint maintenance, municipal well lid maintenance and the like for researching pouring, vibrating, plastering and maintenance, the invention provides the rapid hardening micro-expansion high-crack-resistance maintenance material and the preparation method thereof, which can improve the mechanical property of the maintenance material, realize on-site rapid maintenance and reinforcement, shorten the open traffic time, improve the maintenance efficiency and level and reduce the time cost.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the quick-hardening micro-expansion high-crack-resistance maintenance material comprises a base raw material and water, wherein the base raw material comprises, by weight, 90-110 parts of sulphoaluminate cement, 30-40 parts of a high-activity superfine early-strength mineral admixture, 1-5 parts of a calcium oxide expanding agent, 5-10 parts of microbeads, 2-7 parts of silica fume, 50-80 parts of river sand, 1-3 parts of nano lignin fiber, 2-5 parts of sisal hemp fiber, 6-8 parts of a polycarboxylic acid powder water reducer, 1-3 parts of a siloxane defoamer and 0.01-0.06 part of an early-strength agent.
Further, the ratio of the base material to water is 1: (0.06-0.09).
Further, the high-activity superfine early-strength mineral admixture is prepared by ball milling and sieving 50-70 parts of fly ash floating beads, 10-30 parts of steel slag, 10-30 parts of manganese ore tailing slag, 20-30 parts of water quenching manganese slag and 30-40 parts of quartz powder.
Further, the specific surface area of the high-activity superfine early-strength mineral admixture is 1300-1500 m 2 Per Kg, particle size of 10-20 μm.
Further, the granularity of the river sand is 30-50 mm; the micro silicon powder has granularity of 30-80 mu m and specific surface area of 30-40 m 2 Per gram and particle size of 10-30 mm, specific surface area of 10-15 m 2 Silica fume per gram according to (1-3): 1 ratio of the mixture. The invention adopts the mixed micro silicon powder with large and small granularity size to improve the stacking density of the maintenance material, thereby further improving the strength of the maintenance material.
Further, the length of the nano lignin fiber is 10-20 mm, and the diameter is 0.1-0.2 mm; the length of the sisal fiber is 5-10 mm, and the diameter is 0.2-0.3 mm. The maintenance material without the fiber is subjected to linear change of a compressive stress-strain curve, the damage is obvious and the brittle fracture is low, and the toughness and the ductility of the maintenance material can be improved by adding the nano lignin fiber and the sisal fiber, so that the compressive strength and the flexural strength of the maintenance material can be improved.
Although the silica fume is studied in a plurality of documents, the invention also tries to use the silica fume and other industrial byproducts as the raw materials of the high-activity superfine early-strength mineral admixture, however, experimental results show that the cooperation of the silica fume and other raw materials of the invention can improve the compressive strength of the curing material to a certain extent, but adverse effects are caused in the aspects of expansibility and fluidity. Thus, the present invention does not employ high activity ultrafine early strength mineral admixtures as a suitable option in selecting them as raw materials.
The preparation method of the rapid hardening micro-expansion high crack resistance maintenance material specifically comprises the following steps:
(1) Weighing 50-70 parts of fly ash floating beads, 10-30 parts of steel slag, 10-30 parts of manganese ore tailing slag, 20-30 parts of water quenched manganese slag and 30-40 parts of quartz powder, uniformly mixing, putting into a ball mill, putting 1/3 of zirconia balls into the ball mill, adding 1/5 of water, ball milling for 1-3 hours, taking out the materials, and sieving to obtain a high-activity superfine early-strength mineral admixture;
(2) Weighing the raw materials according to the weight parts of the components, sequentially pouring the sulphoaluminate cement, the high-activity superfine early-strength mineral admixture, the calcium oxide expanding agent, the microbeads, the silica fume and the river sand into a stirrer, uniformly mixing the raw materials through mechanical stirring, and continuously adding the retarder and the early-strength agent;
(3) Mixing nano lignin fiber and sisal fiber, and then adding a siloxane defoamer to uniformly mix the nano lignin fiber and sisal fiber;
(4) Adding half of water into the stirrer, continuously stirring for 3-4 times in half of an hour, adding the polycarboxylate powder water reducer, and continuously stirring for 0.5-1 h;
(5) Adding the other half of water into a stirrer, stirring for 5-10 min, adding the mixture of the nano lignin fiber, the sisal fiber and the siloxane defoamer in the step (3), continuously stirring for 10-20 min, filling into a mold for molding, and removing the mold after 24-48 h to obtain a maintenance material;
(6) Curing the curing material, wherein curing conditions are as follows: curing in the air with the temperature of 20-40 ℃ and the relative humidity of 80-90% for 12-24 h.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention adopts the by-products of the industries of fly ash floating beads, steel slag, manganese ore tailing slag, water quenched manganese slag, quartz powder and the like as one of the main components of the maintenance material, can recycle a large amount of by-products, can solve the problem of environmental pollution and reduce the production cost.
(2) The invention has simple preparation technology and is suitable for researching and pouring, vibrating and plastering large and small maintenance projects such as road repair, bridge expansion joint maintenance, municipal well lid maintenance and the like.
(3) Based on the close packing theory, the invention optimizes the granularity and content of each raw material and the influence of the mixing step on the working performance, mechanical performance, shrinkage performance and cracking resistance of the rapid hardening micro-expansion high-cracking-resistance maintenance material, and finally obtains the rapid hardening micro-expansion high-cracking-resistance maintenance material with excellent performance.
(4) The prepared rapid hardening micro-expansion high crack resistance maintenance material has 3h compressive strength of more than 25MPa, 3h flexural strength of more than 15MPa, 24h compressive strength of more than 70MPa and 24h flexural strength of more than 20 MPa; the expansion rate for 24 hours is 0.01-0.1%; the compressive strength of 28d reaches more than 120MPa, and the flexural strength of 28d reaches more than 25 MPa; the 5min expansion degree reaches more than 600mm, and the 30min fluidity exceeds 400mm. The maintenance material is used for maintenance and reinforcement, so that the open traffic time can be shortened, the maintenance efficiency and level can be improved, and the time cost can be reduced.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention.
The activity index of the high-activity superfine early-strength mineral admixture is tested by referring to GB/T18046-2017 granulated blast furnace slag powder for cement, mortar and concrete; the slump and the expansion degree of the maintenance material are tested by referring to GB/T50080-2016 Standard for common concrete mixture Performance test method; the mechanical properties of the curing material are tested by referring to GB/T50081-2019 Standard of concrete physical and mechanical Property test method.
Example 1
Quick-hardening micro-expansion high-crack-resistance maintenance materialThe composite material comprises 90 parts of sulphoaluminate cement, 30 parts of high-activity superfine early-strength mineral admixture, 1 part of calcium oxide expanding agent, 5 parts of microbeads, 2 parts of silica fume, 50 parts of river sand, 1 part of nano lignin fiber and 2 parts of sisal fiber, 6 parts of polycarboxylate powder water reducer, 1 part of siloxane defoamer, 0.1 part of boric acid retarder and 0.01 part of lithium carbonate early-strength agent in parts by weight. The proportion of the matrix raw material to the water is 1:0.06. the high-activity superfine early-strength mineral admixture is prepared by ball milling and sieving 50 parts of fly ash floating beads, 10 parts of steel slag, 20 parts of slag and 30 parts of quartz powder. The specific surface area of the high-activity superfine early-strength mineral admixture is 1300m 2 Kg, particle size 10 μm. The granularity of the river sand is 30mm; the micro silicon powder has the granularity of 30 mu m and the specific surface area of 30m 2 /g and particle size 10mm, specific surface area 10m 2 Silica fume/g according to 1:1 ratio of the mixture. The length of the nano lignin fiber is 10mm, and the diameter is 0.1mm; the sisal fibers have a length of 5mm and a diameter of 0.2mm.
The preparation method of the rapid hardening micro-expansion high crack resistance maintenance material specifically comprises the following steps:
(1) Weighing 50 parts of fly ash floating beads, 10 parts of steel slag, 10 parts of manganese ore tailing slag, 20 parts of water quenched manganese slag and 30 parts of quartz powder, uniformly mixing, putting into a ball mill, putting 1/3 of zirconia balls by weight of the materials, adding 1/5 of water for ball milling for 1h, taking out the materials, and sieving to obtain a high-activity superfine early-strength mineral admixture;
(2) Weighing the raw materials according to the weight parts of the components, sequentially pouring the sulphoaluminate cement, the high-activity superfine early-strength mineral admixture, the calcium oxide expanding agent, the microbeads, the silica fume and the river sand into a stirrer, uniformly mixing the raw materials through mechanical stirring, and continuously adding the retarder and the early-strength agent;
(3) Mixing nano lignin fiber and sisal fiber, and then adding a siloxane defoamer to uniformly mix the nano lignin fiber and sisal fiber;
(4) Adding half of water into the stirrer, continuously stirring for 3 times in half an hour, and continuously stirring for 0.5h;
(5) Adding the other half of water into a stirrer, stirring for 5min, adding the mixture of the nano lignin fiber, the sisal fiber and the silicone defoamer in the step (3), continuously stirring for 10min, filling into a mold, forming, and removing the mold after 24h to obtain the maintenance material; (6) curing the curing material, wherein curing conditions are as follows: curing for 12h in the air with the temperature of 20 ℃ and the relative humidity of 80-90 percent.
Comparative examples 1 to 2
Comparative examples 1-2 are identical to example 1 in composition and preparation process, except that the ratio of the base material and water of comparative example 1 is 1:0.05; the ratio of the base material and water of comparative example 1 was 1:0.12.
table 1 shows the mechanical properties of the cured materials prepared in example 1 and comparative examples 1 to 2.
TABLE 1
The test results show that the water-gel ratio has an influence on the mechanical properties of the maintenance material, which is consistent with the rules of general researches. When the water gel in the maintenance material is relatively low, the water demand of the hydration reaction in the maintenance material is reduced; the increase of the water-gel ratio can improve the working performance of the maintenance material to a certain extent, and the good fluidity can enable bubbles to be removed more easily, so that the strength of the maintenance material can be improved, the water-gel ratio is further improved, and the fluidity is increased, so that the compressive strength, the flexural strength and the like are reduced.
Example 2
The quick-hardening micro-expansion high-crack-resistance maintenance material comprises a base raw material and water, wherein the base raw material comprises 110 parts by weight of sulphoaluminate cement, 40 parts by weight of high-activity superfine early-strength mineral admixture, 5 parts by weight of calcium oxide expanding agent, 10 parts by weight of microbeads, 7 parts by weight of silica fume, 80 parts by weight of river sand, 3 parts by weight of nano lignin fiber and sisal fiber, 8 parts by weight of polycarboxylic acid powder water reducer, 3 parts by weight of silicone defoamer, 0.3 part by weight of citric acid retarder and 0.06 part by weight of polymer lithium salt early-strength agent. The proportion of the matrix raw material to the water is 1:0.09. the high-activity superfine early-strength mineral admixture consists of 70 parts of fly ash floating beads, 30 parts of steel slag,30 parts of manganese ore tailing slag, 30 parts of water quenched manganese slag and 40 parts of quartz powder are subjected to ball milling and sieving to prepare the manganese ore tailing slag. The specific surface area of the high-activity superfine early-strength mineral admixture is 1500m 2 Kg, particle size 20 μm. The granularity of the river sand is 50mm; the micro silicon powder has the granularity of 80 mu m and the specific surface area of 40 mu m 2 Per gram and particle size 30mm, specific surface area 15m 2 Silica fume/g according to 3:1 ratio of the mixture. The length of the nano lignin fiber is 20mm, and the diameter is 0.2mm; the sisal fibers have a length of 10mm and a diameter of 0.3mm.
The preparation method of the rapid hardening micro-expansion high crack resistance maintenance material specifically comprises the following steps:
(1) Weighing 70 parts of fly ash floating beads, 30 parts of steel slag, 30 parts of manganese ore tailing slag, 30 parts of water quenched manganese slag and 40 parts of quartz powder, uniformly mixing, putting into a ball mill, putting 1/3 of zirconia balls in weight parts of materials, adding 1/5 of water for ball milling for 1-3 hours, taking out the materials, and sieving to obtain a high-activity superfine early-strength mineral admixture;
(2) Weighing the raw materials according to the weight parts of the components, sequentially pouring the sulphoaluminate cement, the high-activity superfine early-strength mineral admixture, the calcium oxide expanding agent, the microbeads, the silica fume and the river sand into a stirrer, and uniformly mixing the raw materials through mechanical stirring;
(3) Mixing nano lignin fiber and sisal fiber, adding a siloxane defoamer to uniformly mix, and continuously adding a retarder and an early strength agent;
(4) Adding half of water into the stirrer, continuously stirring for half an hour, adding the polycarboxylate powder water reducer for 4 times, and continuously stirring for 1 hour;
(5) Adding the other half of water into a stirrer, stirring for 10min, adding the mixture of the nano lignin fiber, the sisal fiber and the silicone defoamer in the step (3), continuously stirring for 20min, filling into a mold, forming, and removing the mold after 48h to obtain the maintenance material;
(6) Curing the curing material, wherein curing conditions are as follows: curing in air with the temperature of 40 ℃ and the relative humidity of 90 percent for 24 hours.
Comparative examples 3 to 6
Comparative examples 3 to 6 are identical to example 2 in composition and preparation method, except that the ultra-fine early strength mineral admixture in comparative example 3 is prepared by ball milling and sieving 70 parts of silica fume, 30 parts of steel slag, 30 parts of manganese ore tailing slag, 20 parts of water quenched manganese slag and 40 parts of quartz powder; the superfine mineral admixture in comparative example 4 is prepared by ball milling and sieving 70 parts of fly ash floating beads, 30 parts of silica fume, 30 parts of manganese ore tailing slag, 20 parts of water quenched manganese slag and 40 parts of quartz powder; the superfine mineral admixture in comparative example 5 is prepared by ball milling and sieving 70 parts of fly ash floating beads, 30 parts of steel slag, 30 parts of silica fume and 40 parts of quartz powder; the superfine mineral admixture in comparative example 6 is prepared by ball milling and sieving 70 parts of fly ash floating beads, 30 parts of steel slag, 30 parts of manganese ore tailing slag, 20 parts of water quenched manganese slag and 40 parts of silica fume.
Table 2 shows the mechanical properties of the cured materials prepared in example 2 and comparative examples 3 to 6.
TABLE 2
Experimental data shows that the maintenance material prepared by the invention has excellent mechanical properties, and when the silica fume is used as the high-activity superfine early-strength mineral admixture, the mechanical properties are consistent with those of the application, but the mechanical properties are obviously lower than those of the application in the data of 5min expansion degree and 30min fluidity.
Example 3
The quick-hardening micro-expansion high-crack-resistance maintenance material comprises a base raw material and water, wherein the base raw material comprises, by weight, 100 parts of sulphoaluminate cement, 35 parts of a high-activity superfine early-strength mineral admixture, 2 parts of a calcium oxide expanding agent, 7 parts of microbeads, 5 parts of silica fume, 60 parts of river sand, 2 parts of nano lignin fibers and 3 parts of sisal fibers, 7 parts of a polycarboxylic acid powder water reducer, 2 parts of a silicone defoamer, 0.2 part of a sodium gluconate retarder and 0.03 part of a sodium carbonate early-strength agent. The proportion of the matrix raw material to the water is 1:0.07. the high-activity superfine early-strength mineral admixture is prepared by ball milling and sieving of 60 parts of fly ash floating beads, 20 parts of steel slag, 20 parts of manganese ore tailing slag, 25 parts of water quenched manganese slag and 35 parts of quartz powder. The high-activity superfine early strength mineral admixtureHas a specific surface area of 1400m 2 Kg, particle size 15 μm. The granularity of the river sand is 40mm; the micro silicon powder has the granularity of 50 mu m and the specific surface area of 35m 2 Per gram and particle size 20mm, specific surface area 12m 2 Silica fume/g according to 2:1 ratio of the mixture. The length of the nano lignin fiber is 15mm, and the diameter is 0.15mm; the sisal fibers have a length of 7mm and a diameter of 0.25mm.
The preparation method of the rapid hardening micro-expansion high crack resistance maintenance material specifically comprises the following steps:
(1) Weighing 60 parts of fly ash drift, 20 parts of steel slag, 20 parts of manganese ore tailing slag, 25 parts of water quenched manganese slag and 35 parts of quartz powder, uniformly mixing, putting into a ball mill, putting 1/3 of zirconia balls in weight parts of materials, adding 1/5 of water for ball milling for 1-3 hours, taking out the materials, and sieving to obtain a high-activity superfine early-strength mineral admixture;
(2) Weighing the raw materials according to the weight parts of the components, sequentially pouring the sulphoaluminate cement, the high-activity superfine early-strength mineral admixture, the calcium oxide expanding agent, the microbeads, the silica fume and the river sand into a stirrer, uniformly mixing the raw materials through mechanical stirring, and continuously adding the retarder and the early-strength agent;
(3) Mixing nano lignin fiber and sisal fiber, and then adding a siloxane defoamer to uniformly mix the nano lignin fiber and sisal fiber;
(4) Adding half of water into the stirrer, continuously stirring for 3 times in half an hour, and continuously stirring for 0.8h;
(5) Adding the other half of water into a stirrer, stirring for 8min, adding the mixture of the nano lignin fiber, the sisal fiber and the silicone defoamer in the step (3), continuously stirring for 15min, filling into a mold, forming, and removing the mold after 36h to obtain the maintenance material; (6) curing the curing material, wherein curing conditions are as follows: curing in air with the temperature of 30 ℃ and the relative humidity of 85 percent for 18 hours.
Comparative examples 7 to 8
Comparative examples 7 to 8 are identical to example 3 in composition and preparation method, except that the microsilica in comparative example 7 has a particle size of 50 μm and a specific surface area of 35m 2 Silica fume/g; the microsilica described in comparative example 7 isParticle size 20mm, specific surface area 12m 2 Silica fume/g.
Table 3 shows the mechanical properties of the cured materials prepared in example 3 and comparative examples 7 to 8.
TABLE 3 Table 3
The experimental data of the invention show that: the performance of the micro silicon powder with single grain size is poorer than that of the micro silicon powder mixed with different grain sizes. The influence of the particle size of the material on the mechanical property of the maintenance material can be reflected from the side surface.
Table 4 shows the activity index of the ultrafine mineral blends of examples 1-3 and comparative examples 1-8.
TABLE 1
According to the experimental data, the high-activity superfine early-strength mineral admixture prepared from the fly ash floating beads, the steel slag, the manganese ore tailing slag, the water quenched manganese slag and the quartz powder through ball milling and sieving has higher activity index compared with the silica fume serving as the raw material.
The rapid hardening micro-expansion high crack resistance maintenance material prepared by the method has the compressive strength of more than 25MPa for 3 hours, the flexural strength of more than 15MPa for 3 hours, the compressive strength of more than 70MPa for 24 hours and the flexural strength of more than 20MPa for 24 hours; the expansion rate for 24 hours is 0.01-0.1%; the compressive strength of 28d reaches more than 120MPa, and the flexural strength of 28d reaches more than 25 MPa; the 5min expansion degree reaches more than 600mm, and the 30min fluidity exceeds 400mm. The maintenance material is used for maintenance and reinforcement, so that the open traffic time can be shortened, the maintenance efficiency and level can be improved, and the time cost can be reduced.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A rapid hardening micro-expansion high crack resistance maintenance material is characterized in that: comprises matrix raw materials and water, wherein the matrix raw materials comprise, by weight, 90-110 parts of sulphoaluminate cement, 30-40 parts of high-activity superfine early-strength mineral admixture, 1-5 parts of calcium oxide expanding agent, 5-10 parts of microbeads, 2-7 parts of silica fume, 50-80 parts of river sand, 1-3 parts of nano lignin fibers, 2-5 parts of sisal fibers, 6-8 parts of polycarboxylic acid powder water reducer, 1-3 parts of silicone defoamer, 0.1-0.3 part of retarder and 0.01-0.06 part of early strength agent;
the proportion of the matrix raw material to the water is 1: (0.06-0.09);
the high-activity superfine early-strength mineral admixture is prepared by ball milling and sieving 50-70 parts of fly ash floating beads, 10-30 parts of steel slag, 10-30 parts of manganese ore tailing slag, 20-30 parts of water quenching manganese slag and 30-40 parts of quartz powder;
the specific surface area of the high-activity superfine early-strength mineral admixture is 1300-1500 m 2 Per Kg, particle size of 10-20 μm.
2. The rapid hardening micro-expanding high crack resistance curing material according to claim 1, wherein: the length of the nano lignin fiber is 10-20 mm, and the diameter is 0.1-0.2 mm; the length of the sisal fiber is 5-10 mm, and the diameter is 0.2-0.3 mm.
3. The rapid hardening micro-expanding high crack resistance curing material according to claim 1, wherein: the retarder is one or two of boric acid, citric acid and sodium gluconate; the early strength agent is one or two of lithium carbonate, polymer lithium salt and sodium carbonate.
4. A method for preparing a rapid hardening micro-expansion high crack resistance curing material according to any one of claims 1-3, comprising the following steps:
(1) Weighing 50-70 parts of fly ash floating beads, 10-30 parts of steel slag, 10-30 parts of manganese ore tailing slag, 20-30 parts of water quenched manganese slag and 30-40 parts of quartz powder, uniformly mixing, putting into a ball mill, putting 1/3 of zirconia balls into the ball mill, adding 1/5 of water for ball milling for 1-3 hours, taking out the materials, and sieving;
(2) Weighing the raw materials according to the weight parts of the components, sequentially pouring the sulphoaluminate cement, the high-activity superfine early-strength mineral admixture, the calcium oxide expanding agent, the microbeads, the silica fume and the river sand into a stirrer, and uniformly mixing the raw materials through mechanical stirring;
(3) Mixing nano lignin fiber and sisal fiber, and then adding a siloxane defoamer to uniformly mix the nano lignin fiber and sisal fiber;
(4) Adding half of water into the stirrer, continuously stirring for 3-4 times in half of an hour, adding the polycarboxylate powder water reducer, and continuously stirring for 0.5-1 h;
(5) Adding the other half of water into a stirrer, stirring for 5-10 min, adding the mixture of the nano lignin fiber, the sisal fiber and the siloxane defoamer in the step (3), continuously stirring for 10-20 min, filling into a mold for molding, and removing the mold after 24-48 h to obtain a maintenance material;
(6) Curing the curing material, wherein curing conditions are as follows: curing in the air with the temperature of 20-40 ℃ and the relative humidity of 80-90% for 12-24 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111489844.3A CN115286327B (en) | 2021-12-08 | 2021-12-08 | Quick-hardening micro-expansion high-crack-resistance maintenance material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111489844.3A CN115286327B (en) | 2021-12-08 | 2021-12-08 | Quick-hardening micro-expansion high-crack-resistance maintenance material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115286327A CN115286327A (en) | 2022-11-04 |
| CN115286327B true CN115286327B (en) | 2023-07-14 |
Family
ID=83818886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111489844.3A Active CN115286327B (en) | 2021-12-08 | 2021-12-08 | Quick-hardening micro-expansion high-crack-resistance maintenance material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115286327B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116986857B (en) * | 2023-09-26 | 2024-01-05 | 石家庄铁道大学 | High-strength anti-cracking steel slag base polymer and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009084095A (en) * | 2007-09-28 | 2009-04-23 | Denki Kagaku Kogyo Kk | Low shrinkage ultrahigh strength fiber-reinforced cement composition, low shrinkage ultrahigh strength fiber-reinforced mortar or concrete, and low shrinkage ultrahigh strength cement admixture |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329105B (en) * | 2011-06-04 | 2013-02-27 | 桂林理工大学 | Method for preparing concrete by taking manganese residue-steel residue-limestone powder as admixture |
| CN106587862B (en) * | 2016-12-12 | 2019-05-03 | 江苏中铁奥莱特新材料股份有限公司 | Ultra-fine type self-compaction mending mortar solidifying fastly and preparation method thereof |
| CN108059378A (en) * | 2017-12-29 | 2018-05-22 | 天津宝丰建材有限公司 | A kind of high performance concrete composite admixture |
| CN110423073A (en) * | 2019-07-02 | 2019-11-08 | 南京梦联桥传感科技有限公司 | Wet joint concrete dry blend and preparation method are shunk in a kind of compensation of super hardening |
| CN111499294B (en) * | 2020-03-22 | 2021-12-03 | 桂林理工大学 | Ultrahigh-performance concrete dry powder and preparation method thereof |
| CN111574174A (en) * | 2020-05-28 | 2020-08-25 | 河北智晖建筑安装工程有限公司 | Quick-setting, quick-hardening, super-early-strength and high-crack-resistance pavement repairing material and preparation method thereof |
| KR102255034B1 (en) * | 2020-10-30 | 2021-05-24 | 한국건설기술연구원 | Conslat, Ultra High Performance Concrete for Conslat, and Manufacturing Method thereof |
| AU2021101949A4 (en) * | 2021-04-15 | 2021-06-03 | China Construction Ready Mixed Concrete Co.Ltd. | A Kind of Green High Performance Concrete |
-
2021
- 2021-12-08 CN CN202111489844.3A patent/CN115286327B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009084095A (en) * | 2007-09-28 | 2009-04-23 | Denki Kagaku Kogyo Kk | Low shrinkage ultrahigh strength fiber-reinforced cement composition, low shrinkage ultrahigh strength fiber-reinforced mortar or concrete, and low shrinkage ultrahigh strength cement admixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115286327A (en) | 2022-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115140974B (en) | 200 MPa-grade steaming-free ultra-high-performance concrete containing coarse aggregate and preparation method thereof | |
| CN110790552B (en) | Waste brick regenerated ultrahigh-toughness mixture and preparation method and application thereof | |
| CN111423180A (en) | High-fluidity environment-friendly ultra-high-performance concrete and preparation method thereof | |
| CN112250355A (en) | Alkali-activated fly ash/slag recycled concrete and preparation method thereof | |
| CN114409347A (en) | Steam-curing-free low-cost ultrahigh-performance concrete and preparation method thereof | |
| CN111018437B (en) | Ultrahigh-toughness waste brick-concrete regeneration mixture and preparation method and application thereof | |
| CN115819049A (en) | Cement-based grouting material for mounting wind power foundation tower barrel base and preparation method thereof | |
| CN113773028A (en) | Geopolymer concrete and preparation method thereof | |
| CN111439973B (en) | Cement-based grouting material and preparation method and application thereof | |
| CN111410479A (en) | Ultrahigh-performance concrete and preparation method thereof | |
| CN114105580A (en) | Method for preparing reactive powder concrete by utilizing bulk coal mine industrial solid wastes | |
| CN115286327B (en) | Quick-hardening micro-expansion high-crack-resistance maintenance material and preparation method thereof | |
| CN111253130A (en) | High-strength heat-resistant self-repairing concrete and preparation method thereof | |
| CN113636802A (en) | Ultrahigh-performance concrete and preparation method thereof | |
| CN113800829A (en) | Early-strength type ultrahigh-ductility geopolymer concrete material and preparation method thereof | |
| CN114105572A (en) | Basalt fiber reinforced active powder concrete cover plate and preparation method thereof | |
| CN113929409A (en) | Ultrahigh-performance concrete based on composite cementitious material system | |
| CN111348871B (en) | High-titanium slag sand reactive powder concrete and preparation method thereof | |
| CN115490448B (en) | Method for reducing self-shrinkage of ultra-high-performance concrete, high-strength concrete and high-strength mortar | |
| CN115893912A (en) | Low-carbon geopolymer mortar repair material and preparation method thereof | |
| CN110950584B (en) | Silica fume/volcanic ash based geopolymer concrete and preparation method thereof | |
| CN117209222A (en) | Preparation method of building 3D printing material | |
| CN110885204B (en) | Anti-cracking reinforcing material for long-life concrete product and preparation method and application thereof | |
| CN109354436B (en) | Special glue material bag for pre-prepared mortar suitable for washing sea sand and preparation method thereof | |
| CN113443874A (en) | Nano calcium carbonate and polypropylene fiber synergistically enhanced recycled concrete and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230615 Address after: 541000 No.12 Jiangan Road, Qixing District, Guilin City, Guangxi Zhuang Autonomous Region Applicant after: GUILIN University OF TECHNOLOGY Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin City Seven Star District Building Road No. 12 Applicant before: GUILIN University OF TECHNOLOGY Applicant before: Guilin Xinnan Technology Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20221104 Assignee: Guangxi Yuanming New Material Technology Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2023980044296 Denomination of invention: A fast hardening, micro expansion, and high crack resistance curing material and its preparation method Granted publication date: 20230714 License type: Common License Record date: 20231025 Application publication date: 20221104 Assignee: Guilin Yuanming Technology Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2023980044295 Denomination of invention: A fast hardening, micro expansion, and high crack resistance curing material and its preparation method Granted publication date: 20230714 License type: Common License Record date: 20231025 |