CN105837109A - High-strength corrosion-resistant concrete material and application thereof - Google Patents
High-strength corrosion-resistant concrete material and application thereof Download PDFInfo
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- CN105837109A CN105837109A CN201610153012.7A CN201610153012A CN105837109A CN 105837109 A CN105837109 A CN 105837109A CN 201610153012 A CN201610153012 A CN 201610153012A CN 105837109 A CN105837109 A CN 105837109A
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- calcium stearate
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- 239000004567 concrete Substances 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 title claims abstract description 37
- 230000007797 corrosion Effects 0.000 title abstract description 8
- 238000005260 corrosion Methods 0.000 title abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- -1 polypropylene Polymers 0.000 claims abstract description 18
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 14
- 235000017060 Arachis glabrata Nutrition 0.000 claims abstract description 13
- 244000105624 Arachis hypogaea Species 0.000 claims abstract description 13
- 235000010777 Arachis hypogaea Nutrition 0.000 claims abstract description 13
- 235000018262 Arachis monticola Nutrition 0.000 claims abstract description 13
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 13
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 13
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 13
- 239000008116 calcium stearate Substances 0.000 claims abstract description 13
- 235000020232 peanut Nutrition 0.000 claims abstract description 13
- 235000009566 rice Nutrition 0.000 claims abstract description 13
- 239000010902 straw Substances 0.000 claims abstract description 13
- 239000011398 Portland cement Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 239000010445 mica Substances 0.000 claims abstract description 10
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 10
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 10
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 10
- XGRSAFKZAGGXJV-UHFFFAOYSA-N 3-azaniumyl-3-cyclohexylpropanoate Chemical compound OC(=O)CC(N)C1CCCCC1 XGRSAFKZAGGXJV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 9
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229960004711 sodium monofluorophosphate Drugs 0.000 claims abstract description 9
- 239000010457 zeolite Substances 0.000 claims abstract description 9
- 240000007594 Oryza sativa Species 0.000 claims abstract 4
- 238000003756 stirring Methods 0.000 claims description 16
- 229940126062 Compound A Drugs 0.000 claims description 12
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims description 12
- 238000000498 ball milling Methods 0.000 claims description 12
- 235000012054 meals Nutrition 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 9
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 8
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- JHJUUEHSAZXEEO-UHFFFAOYSA-M sodium;4-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=C(S([O-])(=O)=O)C=C1 JHJUUEHSAZXEEO-UHFFFAOYSA-M 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 abstract description 2
- 239000004925 Acrylic resin Substances 0.000 abstract 1
- 235000019764 Soybean Meal Nutrition 0.000 abstract 1
- 229940078456 calcium stearate Drugs 0.000 abstract 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 abstract 1
- 229940050549 fiber Drugs 0.000 abstract 1
- 229940043356 mica Drugs 0.000 abstract 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 abstract 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 abstract 1
- 239000004455 soybean meal Substances 0.000 abstract 1
- 241000209094 Oryza Species 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance 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
- C04B28/04—Portland 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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a high-strength corrosion-resistant concrete material, which belongs to the technical field of concrete. The concrete material is prepared from the following raw materials: ordinary Portland cement, river sand, fly ash, meerschaum, zeolite, epoxy acrylate resin, polypropylene fiber, sodium dodecyl benzene sulfonate, sodium monofluorophosphate, calcium stearate, mica powder, paddy rice straw powder, peanut shell powder, soybean meal and water. The concrete material provided by the invention has high compressive strength and flexural strength, no corrosion, salt resistance and light weight and is applicable as a tower and building body material.
Description
Technical field
The invention belongs to technical field of concrete, be specifically related to concrete material and the application thereof of a kind of high-strength corrosion-resisting.
Background technology
Concrete refers to be cemented to gathering materials the general designation of the engineered composite material of entirety by Binder Materials.Concrete one word generally said refers to make Binder Materials with cement, and sand, masonry gather materials；Coordinate by a certain percentage with water (additive and admixture can be contained), agitated obtained by cement concrete, also referred to as normal concrete, it is widely used in civil engineering.Concrete refers to be gathered materials by cementitious matter (organic, inorganic or organo-mineral complexing), graininess, water and needs add chemical admixture and mineral admixture are by the compound of proper proportion mixing, or after hardened, form the composite (being commonly with Binder Materials, water, fine aggregate, coarse aggregate) with heap poly structure, mix additive and mineral admixture when needing, coordinate by proper proportion.Concrete has abundant raw material, cheap, the simple feature of production technology, thus makes its consumption increasing.Concrete also has the features such as comprcssive strength height, good endurance, strength grade wide ranges simultaneously.These features make its range quite varied, not only use in various civil engineerings, it is simply that shipbuilding industry, mechanical industry, the exploitation of ocean, geothermal engineering etc., concrete is also important material.
Concrete has wide range of applications, and also has use in transmission system.Currently common prestressed concrete electric pole is only used in the power transmission sequence of below 220kV, extensively applies steel tower in supertension power transmission sequence.Owing to being metal structure, easily there is corrosion in this kind of tower structure, therefore service life is shorter, and maintenance workload is big.And traditional normal concrete electric pole mechanical strength is the highest, be difficult to apply in high voltage circuit, unless cross section do bigger, but so both added deadweight, make that construction becomes is extremely difficult, the prior cost increased again.How to develop a kind of mechanical strength big, weight is less, and concrete material corrosion-resistant and with low cost is the technical problem that prior art is urgently to be resolved hurrily.
Summary of the invention
Present invention aim to address many defects of concrete material in prior art, through lot of experiments and exploration, change raw material composition and the preparation technology of existing concrete, a kind of electric power electric pole concrete is provided, it is big that this concrete possesses mechanical strength, corrosion-resistant, the advantages such as weight is less, with low cost and preparation technology is simple.
To achieve these goals, technical scheme realizes in the following way:
A kind of concrete material of high-strength corrosion-resisting, it is prepared by following raw material:
Portland cement, fluvial sand, flyash, meerschaum, zeolite, Epocryl, polypropylene fibre, dodecylbenzene sodium sulfonate, sodium monofluorophosphate, calcium stearate, mica powder, rice straw powder, peanut hull meal, bean cake, water.
Preferably, Portland cement is No. 42.5；
The particle diameter of fluvial sand is 1-3mm；
The particle diameter of flyash or mica powder is 100-300 μm；
The particle diameter of rice straw powder and peanut hull meal is 0.5-1mm.
The preparation technology of above-mentioned concrete material comprises the steps:
Meerschaum and zeolite being mixed according to the mass ratio of 1:1, then put into crusher in crushing, scrap rates is 200r/min, the broken time is 5min, and the material after then crushing is placed in ball milling in ball mill, and ball milling speed is 100r/min, Ball-milling Time is 10min, obtains compound A；
Water, Epocryl, polypropylene fibre, dodecylbenzene sodium sulfonate, sodium monofluorophosphate, calcium stearate are compared mix homogeneously according to the quality of 10:5:3:2:1:1, it is then heated to 70 DEG C, add and the mica powder of calcium stearate equal in quality, it is heated to 90 DEG C, 200 r/min stirring reaction 30min, obtain compound B；
Adding in agitator tank by rice straw powder, peanut hull meal, bean cake and water by the mass ratio of 1:1:1:3, be heated to 80 DEG C, then 200 turns/min stirs 90min, obtains compound C；
Portland cement, fluvial sand, flyash, compound A, compound B and water in mass ratio 60-90: 30-50: 20-30:12-18: 7-12: 40-60 are mixed, 200r/min stirs 5min, obtain slurry, then adding in slurry by compound C, 100r/min stirring 3min obtains concrete；
Described compound C is the twice of compound A.
The present invention obtain beneficial effect be primarily but not limited to following some:
Compared with prior art, concrete of the present invention is through lot of experiments and exploration, change the raw material composition of existing concrete, part material is modified simultaneously, the advantage such as its concrete prepared possesses that mechanical strength is big, light weight, length in service life, corrosion-resistant, aging resistance and easy care；The present invention, in the raw material of concrete, adds resin and polypropylene fibre, adds the performances such as the intensity of concrete, elasticity, wearability；The present invention, by adding the raw materials such as meerschaum, agricultural waste material and flyash, improves foaming effect, on the premise of not reducing intensity so that electric pole more light weight, and stability is more preferable, saves the raw materials such as cement simultaneously；Have employed substantial amounts of cheap raw material in concrete formulation of the present invention, material combination is reasonable, greatly reduces the cost of product, preparation technology simple possible, is suitable for large-scale production, can be widely applied to the field such as shaft tower and Lou Ti.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, below in conjunction with the application specific embodiment, the present invention is more clearly and completely described, it is clear that, described embodiment is only some embodiments of the present application rather than whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all should belong to the scope of protection of the invention.
Embodiment 1
A kind of concrete material of high-strength corrosion-resisting, it is prepared by following raw material:
Portland cement, fluvial sand, flyash, meerschaum, zeolite, Epocryl, polypropylene fibre, dodecylbenzene sodium sulfonate, sodium monofluorophosphate, calcium stearate, mica powder, rice straw powder, peanut hull meal, bean cake, water.
Wherein, Portland cement is No. 42.5；The particle diameter of fluvial sand is 1mm；The particle diameter of flyash is 100 μm；The particle diameter of rice straw powder and peanut hull meal is 0.5mm.
The preparation technology of above-mentioned concrete material comprises the steps:
Meerschaum and zeolite being mixed according to the mass ratio of 1:1, then put into crusher in crushing, scrap rates is 200r/min, the broken time is 5min, and the material after then crushing is placed in ball milling in ball mill, and ball milling speed is 100r/min, Ball-milling Time is 10min, obtains compound A；
Water, Epocryl, polypropylene fibre, dodecylbenzene sodium sulfonate, sodium monofluorophosphate, calcium stearate are compared mix homogeneously according to the quality of 10:5:3:2:1:1, it is then heated to 70 DEG C, add and the mica powder of calcium stearate equal in quality, it is heated to 90 DEG C, 200 r/min stirring reaction 30min, obtain compound B；
Adding in agitator tank by rice straw powder, peanut hull meal, bean cake and water by the mass ratio of 1:1:1:3, be heated to 80 DEG C, then 200 turns/min stirs 90min, obtains compound C；
Portland cement, fluvial sand, flyash, compound A, compound B and water in mass ratio 60: 30: 20:12: 7: 40 are mixed, 200r/min stirs 5min, obtaining slurry, then add in slurry by compound C, 100r/min stirring 3min obtains concrete；Described compound C is the twice of compound A.
Embodiment 2
A kind of concrete material of high-strength corrosion-resisting, it is prepared by following raw material:
Portland cement, fluvial sand, flyash, meerschaum, zeolite, Epocryl, polypropylene fibre, dodecylbenzene sodium sulfonate, sodium monofluorophosphate, calcium stearate, mica powder, rice straw powder, peanut hull meal, bean cake, water.
Wherein, Portland cement is No. 42.5；The particle diameter of fluvial sand is 3mm；The particle diameter of flyash is 300 μm；The particle diameter of rice straw powder and peanut hull meal is 1mm.
The preparation technology of above-mentioned concrete material comprises the steps:
Meerschaum and zeolite being mixed according to the mass ratio of 1:1, then put into crusher in crushing, scrap rates is 200r/min, the broken time is 5min, and the material after then crushing is placed in ball milling in ball mill, and ball milling speed is 100r/min, Ball-milling Time is 10min, obtains compound A；
Water, Epocryl, polypropylene fibre, dodecylbenzene sodium sulfonate, sodium monofluorophosphate, calcium stearate are compared mix homogeneously according to the quality of 10:5:3:2:1:1, it is then heated to 70 DEG C, add and the mica powder of calcium stearate equal in quality, it is heated to 90 DEG C, 200 r/min stirring reaction 30min, obtain compound B；
Adding in agitator tank by rice straw powder, peanut hull meal, bean cake and water by the mass ratio of 1:1:1:3, be heated to 80 DEG C, then 200 turns/min stirs 90min, obtains compound C；
Portland cement, fluvial sand, flyash, compound A, compound B and water in mass ratio 90: 50: 30:18: 12: 60 are mixed, 200r/min stirs 5min, obtaining slurry, then add in slurry by compound C, 100r/min stirring 3min obtains concrete；Described compound C is the twice of compound A.
Embodiment 3
Embodiment 1 and the performance test of concrete slurry of embodiment 2 preparation, be placed in slurry in reinforcing bar grinding tool, sizing, maintenance 2 days, and the design parameter of detection is shown in Table 1:
Table 1
| Curing time is 2 days | Embodiment 1 | Embodiment 2 |
| Comprcssive strength Mpa | 123.2 | 117.8 |
| Rupture strength Mpa | 13.9 | 14.1 |
| Qinshui rate % | Nothing | Nothing |
| Reinforcing bar adhesion strength Mpa | 16.6 | 17.1 |
| To reinforcement corrosion | Nothing | Nothing |
| 6% saline soak 100 days | Without loose and peeling | Without loose and peeling |
Conclusion: concrete material pressure-proof and snap-resistent intensity of the present invention is high, non-corrosiveness, salt tolerant, light weight is suitable for shaft tower and building body material.
Finally, in addition it is also necessary to be only several specific embodiments of the present invention it is noted that listed above.It is clear that the invention is not restricted to above example, it is also possible to there are many deformation.All deformation that those of ordinary skill in the art can directly derive from present disclosure or associate, are all considered as protection scope of the present invention.
Claims (5)
1. a concrete material for high-strength corrosion-resisting, it is prepared by following raw material:
Portland cement, fluvial sand, flyash, meerschaum, zeolite, Epocryl, polypropylene fibre, dodecylbenzene sodium sulfonate, sodium monofluorophosphate, calcium stearate, mica powder, rice straw powder, peanut hull meal, bean cake, water.
Concrete material the most according to claim 1, it is characterised in that the particle diameter of described fluvial sand is 1-3mm.
Concrete material the most according to claim 1, it is characterised in that the particle diameter of described flyash is 100-300 μm.
Concrete material the most according to claim 1, it is characterised in that the particle diameter of described rice straw powder or peanut hull meal is 0.5-1mm.
5. according to the concrete material described in claim 1-4, it is characterised in that the preparation technology of described concrete material comprises the steps:
1) meerschaum and zeolite being mixed according to the mass ratio of 1:1, then put into crusher in crushing, scrap rates is 200r/min, the broken time is 5min, and the material after then crushing is placed in ball milling in ball mill, and ball milling speed is 100r/min, Ball-milling Time is 10min, obtains compound A；
2) water, Epocryl, polypropylene fibre, dodecylbenzene sodium sulfonate, sodium monofluorophosphate, calcium stearate are compared mix homogeneously according to the quality of 10:5:3:2:1:1, it is then heated to 70 DEG C, add and the mica powder of calcium stearate equal in quality, it is heated to 90 DEG C, 200 r/min stirring reaction 30min, obtain compound B；
3) adding in agitator tank by rice straw powder, peanut hull meal, bean cake and water by the mass ratio of 1:1:1:3, be heated to 80 DEG C, then 200 turns/min stirs 90min, obtains compound C；
4) Portland cement, fluvial sand, flyash, compound A, compound B and water in mass ratio 60-90: 30-50: 20-30:12-18: 7-12: 40-60 are mixed, 200r/min stirs 5min, obtain slurry, then adding in slurry by compound C, 100r/min stirring 3min obtains concrete；
Described compound C is the twice of compound A.
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| CN201610153012.7A CN105837109B (en) | 2016-03-17 | 2016-03-17 | A kind of concrete material of high-strength corrosion-resisting and its application |
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| CN201610153012.7A CN105837109B (en) | 2016-03-17 | 2016-03-17 | A kind of concrete material of high-strength corrosion-resisting and its application |
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| CN106542796A (en) * | 2016-11-19 | 2017-03-29 | 杨昆 | The preparation technology of small-sized weather monitoring tower concrete material |
| CN106542795A (en) * | 2016-11-15 | 2017-03-29 | 李静 | A kind of preparation technology of build concrete |
| CN107200548A (en) * | 2017-04-28 | 2017-09-26 | 成都市德容建筑劳务有限公司 | Push pipe concrete and its preparation method |
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