CN104591623A - Concrete special for marine environment - Google Patents
Concrete special for marine environment Download PDFInfo
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- CN104591623A CN104591623A CN201510005608.8A CN201510005608A CN104591623A CN 104591623 A CN104591623 A CN 104591623A CN 201510005608 A CN201510005608 A CN 201510005608A CN 104591623 A CN104591623 A CN 104591623A
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Abstract
The invention discloses a concrete special for marine environment. The concrete special contains the following raw material components in parts by weight: 80-130 parts of cement, 150-260 parts of pebbles, 170-240 parts of yellow sand, 30-80 parts of machine-made sand, 80-180 parts of melon-seed-shaped pieces, 15-40 parts of carbon nano tube, 10-35 parts of basalt fiber, 30-70 parts of activated silica powder, 20-70 parts of zeolite powder, 4-8 parts of polycarboxylate type high efficiency water reducers, 2-6 parts of benzoic acid monoethanolamine, 0.5-2.3 parts of palmitic acid, 2-4 parts of sodium hydroxide, 0.3-1.5 parts of stearic acid, 3-5.6 parts of a polysiloxane emulsion and 70-120 parts of water. The concrete special for the marine environment is high in strength and permeability resistance and is good in durability when being applied to the marine environment.
Description
Technical field
The present invention relates to technical field of concrete, particularly relate to concrete special in a kind of ocean environment.
Background technology
China marine site is vast, shoreline is very long, island are numerous, and large-scale fundamental construction mostly concentrates on coastland, such as sea port dock, ocean platform, sea wall, protect case, seawall, bridge spanning the sea, subbottom tunnel, offshore wind farm, man-made island etc., and the chlorion in ocean infiltrates concrete with the form such as seawater, sea fog, affects use properties and the life-span of concrete structure, its weather resistance of oceanographic engineering is in the past not good enough, does not mostly reach the requirement of life.
Summary of the invention
The present invention proposes concrete special in a kind of ocean environment, its intensity is high, impervious strong, good endurance.
The present invention proposes concrete special in a kind of ocean environment, its raw material comprises following component by weight: cement 80-130 part, stone 150-260 part, yellow ground 170-240 part, Machine-made Sand 30-80 part, melon seeds sheet 80-180 part, carbon nanotube 15-40 part, basalt fibre 10-35 part, active silica flour 30-70 part, zeolite powder 20-70 part, polycarboxylic acid series high efficiency water reducing agent 4-8 part, monoethanolamine benzoate 2-6 part, palmitinic acid 0.5-2.3 part, sodium hydroxide 2-4 part, stearic acid 0.3-1.5 part, polysiloxane emulsion 3-5.6 part, water 70-120 part.
Preferably, its raw material comprises following component by weight: cement 90-120 part, stone 170-220 part, yellow ground 185-210 part, Machine-made Sand 40-55 part, melon seeds sheet 100-160 part, carbon nanotube 30-36 part, basalt fibre 19-26 part, active silica flour 48-61 part, zeolite powder 48-56 part, polycarboxylic acid series high efficiency water reducing agent 5.3-6.2 part, monoethanolamine benzoate 3.4-4.6 part, palmitinic acid 1.2-2.1 part, sodium hydroxide 2.9-3.4 part, stearic acid 0.7-1.1 part, polysiloxane emulsion 3.9-4.5 part, water 95-110 part.
Preferably, its raw material comprises following component by weight: cement 100 parts, 200 parts, stone, yellow ground 200 parts, Machine-made Sand 50 parts, melon seeds sheet 150 parts, carbon nanotube 33 parts, basalt fibre 21 parts, active silica flour 52 parts, zeolite powder 53 parts, polycarboxylic acid series high efficiency water reducing agent 5.8 parts, monoethanolamine benzoate 3.9 parts, palmitinic acid 1.6 parts, 3.2 parts, sodium hydroxide, stearic acid 0.9 part, polysiloxane emulsion 4.2 parts, 100 parts, water.
Preferably, in described active silica flour, the content of silicon-dioxide is more than 95%.
Preferably, described polycarboxylic acid series high efficiency water reducing agent is prepared according to following technique; Add in reaction unit after by weight 30-40 part allyl polyglycol, 1-3 part maleic anhydride, 1.3-2.8 part β-dimethyl-aminoethylmethacrylate and 40-50 part water being mixed and stir, 0.2-0.6 part Potassium Persulphate is added after passing into nitrogen, stirring is incubated 5-8h after being warming up to 65-80 DEG C, utilizes the pH of triethylamine regulation system for obtaining described high-efficiency water-reducing agent of poly-carboxylic acid after 7-9 after being cooled to 30-38 DEG C.
Preferably, described polycarboxylic acid series high efficiency water reducing agent is prepared according to following technique; Add in reaction unit after by weight 33-36 part allyl polyglycol, 1.6-2.3 part maleic anhydride, 1.9-2.2 part β-dimethyl-aminoethylmethacrylate and 43-46 part water being mixed and stir, 0.3-0.5 part Potassium Persulphate is added after passing into nitrogen, being incubated 6.5-7.2h after being warming up to 70-75 DEG C, after being cooled to 33-36 DEG C, utilizing the pH of triethylamine regulation system for obtaining described high-efficiency water-reducing agent of poly-carboxylic acid after 7-8.
Preferably, described polycarboxylic acid series high efficiency water reducing agent is prepared according to following technique; Stir adding in reaction unit after 34 parts of allyl polyglycols, 2 parts of maleic anhydrides, 2.1 parts of β-dimethyl-aminoethylmethacrylates and 44 parts of water mixing by weight, 0.4 part of Potassium Persulphate is added after passing into nitrogen, be incubated 7h after being warming up to 74 DEG C, after being cooled to 35 DEG C, utilize the pH of triethylamine regulation system to obtain described high-efficiency water-reducing agent of poly-carboxylic acid after 7.
In the present invention, carbon nanotube, the basalt fibre of interpolation form fine and close fibrous reticular structure at inside concrete, limit the emergence and development of inside concrete tiny crack, have enhancing, toughness reinforcing concrete effect, improve concrete mechanical property; Silicon-dioxide in active silica flour and zeolite powder can react with the calcium hydroxide in cement, generate more hard silicate, improve concrete intensity, it can be filled in concrete space simultaneously, improve concrete impermeability, improve concrete intensity and density, the concentration of potassium ion and sodium ion in concrete can also be reduced in addition by absorption and ion exchange, alleviation alkali-gather materials to concrete harm; The polycarboxylic acid series high efficiency water reducing agent added has high water reducing rate and keeps good slump, and the concrete performance obtained is stablized; Monoethanolamine benzoate joins after in concrete can be decomposed into phenylformic acid and monoethanolamine, phenylformic acid and monoethanolamine can migrate to concrete surface and form protective membrane, in ocean environment, application can reduce the migration of seawater at inside concrete, improve concrete weather resistance, coordinate with carbon nanotube, basalt fibre, reduce further the generation of internal fissure; Palmitinic acid and stearic acid join in concrete, insoluble calcium soap adsorption layer can be formed with the calcium hydroxide reaction in cement at the auxiliary lower of sodium hydroxide, play the effect of filling micro-pore and blocking capillary channel, reduce concrete water regain after coordinating polysiloxane emulsion, delay seawater to concrete corrodibility; The various raw materials selected in the present invention coordinate the concrete formed to reduce chloride ion permeability according to aforementioned proportion, extend the time that reinforcement in concrete starts corrosion, improve Sulfate Resistance of Concrete energy and frost resistance, effectively inhibit alkali-aggregate reaction, enhance concrete weather resistance, can apply in ocean environment.
Performance test is carried out to concrete special in ocean environment of the present invention, its 3d ultimate compression strength is 45.7-53.2MPa, 7d ultimate compression strength is 57.9-65.6MPa, 28d ultimate compression strength is 82.3-84.3MPa, 3d folding strength is 8.3-10.2MPa, 7d folding strength is 12.3-15.4MPa, 28d folding strength is 19.6-22.4MPa; In ocean environment of the present invention, concrete special can use 80-105 continuously in ocean environment.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail; should understand; embodiment is only for illustration of the present invention, instead of for limiting the present invention, any amendment, equivalent replacement etc. made on basis of the present invention is all in protection scope of the present invention.
In a particular embodiment, concrete special in ocean environment of the present invention, in its raw material, the weight part of cement can be 82, 86, 88.3, 91, 93.4, 95, 97, 98, 103, 105, 108.6, 109, 112, 115, 118.3, 123, 127 parts, the weight part of stone can be 153, 159, 162, 168, 173, 178, 182, 187, 194, 198.3, 203, 207.5, 209.4, 210, 213, 218, 226, 229.4, 234, 238, 245, 248, 253, 257.6 parts, the weight part of yellow ground can be 170.3, 178, 182, 189, 194, 197.5, 203, 208.4, 211, 216.3, 223, 227, 228.9, 231, 237, 238.7 parts, the weight part of Machine-made Sand can be 32, 34, 38.6, 42, 45, 48, 49.3, 50.6, 53, 57, 59, 59.8, 62, 64, 68, 69.3, 70, 70.5, 72, 74, 76, 78.3, 79.4 parts, the weight part of melon seeds sheet can be 85, 89, 92, 97, 103, 107.5, 110, 112, 114.9, 118, 121, 128, 134, 138, 146, 148.5, 152, 157, 163, 168, 172, 174.8, 178.3 parts, the weight part of carbon nanotube can be 15.6, 16, 16.7, 18, 18.3, 19, 19.7, 21, 21.3, 22, 22.7, 24, 24.6, 25, 28, 29, 29.3, 31, 34, 35, 37.4, 38, 38.9, 39.2 parts, the weight part of basalt fibre can be 12, 14, 16, 18.3, 20, 20.4, 23, 25, 26.3, 27, 28, 29.4, 30, 30.4, 31, 32, 32.5, 33, 33.4, 34, 34.6 parts, the weight part of active silica flour can be 32, 37, 38, 40, 42, 45, 47.6, 49, 51, 53, 57, 58.6, 60, 60.4, 62, 65, 67, 68.3, 69, 69.4 parts, the weight part of zeolite powder can be 23, 27, 29.3, 32, 34, 37, 38.6, 40, 42, 43, 45, 48.3, 51, 54, 57, 58.3, 59, 59.4, 61, 62, 64, 65.3, 67, 68, 69.2 parts, the weight part of polycarboxylic acid series high efficiency water reducing agent can be 4.2, 4.6, 4.8, 5, 5.7, 6, 6.4, 6.9, 7, 7.2, 7.4, 7.6, 7.83 parts, the weight part of monoethanolamine benzoate can be 2.3, 2.7, 3, 3.8, 4, 4.3, 4.87, 5, 5.2, 5.6, 5.78, 5.8, 5.94 parts, the weight part of palmitinic acid can be 0.56, 0.64, 0.7, 0.78, 0.9, 0.94, 1, 1.35, 1.4, 1.56, 1.67, 1.8, 1.89, 1.94, 2, 2.2, 2.23 parts, the weight part of sodium hydroxide can be 2.2, 2.26, 2.4, 2.7, 2.86, 2.94, 3, 3.1, 3.45, 3.56, 3.6, 3.7, 3.84, 3.9, 3.92 parts, stearic weight part can be 0.34, 0.4, 0.43, 0.5, 0.56, 0.6, 0.61, 0.67, 0.74, 0.8, 0.83, 0.94, 1, 1.2, 1.3, 1.45 parts, the weight part of polysiloxane emulsion can be 3.2, 3.4, 3.8, 4, 4.6, 5, 5.3, 5.4, 5.56 parts, the weight part of water can be 71, 72, 74, 76, 78.3, 79, 79.4, 82, 83, 84, 85, 86.3, 89, 92, 97, 98.3, 103, 107, 112, 116, 117.5, 119.3 part.
Embodiment 1
Concrete special in ocean environment of the present invention, its raw material comprises following component by weight: cement 80 parts, 260 parts, stone, yellow ground 170 parts, Machine-made Sand 80 parts, melon seeds sheet 180 parts, carbon nanotube 15 parts, basalt fibre 35 parts, active silica flour 70 parts, zeolite powder 20 parts, polycarboxylic acid series high efficiency water reducing agent 8 parts, monoethanolamine benzoate 2 parts, palmitinic acid 2.3 parts, 2 parts, sodium hydroxide, stearic acid 1.5 parts, polysiloxane emulsion 3 parts, 120 parts, water.
Embodiment 2
Concrete special in ocean environment of the present invention, its raw material comprises following component by weight: cement 130 parts, 150 parts, stone, yellow ground 240 parts, Machine-made Sand 30 parts, melon seeds sheet 80 parts, carbon nanotube 40 parts, basalt fibre 10 parts, active silica flour 30 parts, zeolite powder 70 parts, polycarboxylic acid series high efficiency water reducing agent 4 parts, monoethanolamine benzoate 6 parts, palmitinic acid 0.5 part, 4 parts, sodium hydroxide, stearic acid 0.3 part, polysiloxane emulsion 5.6 parts, 70 parts, water;
Wherein, in described active silica flour, the content of silicon-dioxide is 95.6%;
Described polycarboxylic acid series high efficiency water reducing agent is prepared according to following technique; Stir adding in reaction unit after 30 parts of allyl polyglycols, 3 parts of maleic anhydrides, 1.3 parts of β-dimethyl-aminoethylmethacrylates and 50 parts of water mixing by weight, 0.2 part of Potassium Persulphate is added after passing into nitrogen, stirring is incubated 5h after being warming up to 80 DEG C, utilizes the pH of triethylamine regulation system to obtain described high-efficiency water-reducing agent of poly-carboxylic acid after 7 after being cooled to 38 DEG C.
Embodiment 3
Concrete special in ocean environment of the present invention, its raw material comprises following component by weight: cement 109 parts, 173 parts, stone, yellow ground 237 parts, Machine-made Sand 57 parts, melon seeds sheet 121 parts, carbon nanotube 22 parts, basalt fibre 30 parts, active silica flour 57 parts, zeolite powder 43 parts, polycarboxylic acid series high efficiency water reducing agent 6.9 parts, monoethanolamine benzoate 4.87 parts, palmitinic acid 1.89 parts, 3.6 parts, sodium hydroxide, stearic acid 0.74 part, polysiloxane emulsion 5.4 parts, 107 parts, water;
Wherein, in described active silica flour, the content of silicon-dioxide is 97.3%;
Described polycarboxylic acid series high efficiency water reducing agent is prepared according to following technique; Stir adding in reaction unit after 40 parts of allyl polyglycols, 1 part of maleic anhydride, 2.8 parts of β-dimethyl-aminoethylmethacrylates and 40 parts of water mixing by weight, 0.6 part of Potassium Persulphate is added after passing into nitrogen, stirring is incubated 8h after being warming up to 65 DEG C, utilizes the pH of triethylamine regulation system to obtain described high-efficiency water-reducing agent of poly-carboxylic acid after 9 after being cooled to 30 DEG C.
Embodiment 4
Concrete special in ocean environment of the present invention, its raw material comprises following component by weight: cement 100 parts, 200 parts, stone, yellow ground 200 parts, Machine-made Sand 50 parts, melon seeds sheet 150 parts, carbon nanotube 33 parts, basalt fibre 21 parts, active silica flour 52 parts, zeolite powder 53 parts, polycarboxylic acid series high efficiency water reducing agent 5.8 parts, monoethanolamine benzoate 3.9 parts, palmitinic acid 1.6 parts, 3.2 parts, sodium hydroxide, stearic acid 0.9 part, polysiloxane emulsion 4.2 parts, 100 parts, water;
Wherein, in described active silica flour, the content of silicon-dioxide is 96%;
Described polycarboxylic acid series high efficiency water reducing agent is prepared according to following technique; Stir adding in reaction unit after 34 parts of allyl polyglycols, 2 parts of maleic anhydrides, 2.1 parts of β-dimethyl-aminoethylmethacrylates and 44 parts of water mixing by weight, 0.4 part of Potassium Persulphate is added after passing into nitrogen, be incubated 7h after being warming up to 74 DEG C, after being cooled to 35 DEG C, utilize the pH of triethylamine regulation system to obtain described high-efficiency water-reducing agent of poly-carboxylic acid after 7.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (7)
1. concrete special in an ocean environment, it is characterized in that, its raw material comprises following component by weight: cement 80-130 part, stone 150-260 part, yellow ground 170-240 part, Machine-made Sand 30-80 part, melon seeds sheet 80-180 part, carbon nanotube 15-40 part, basalt fibre 10-35 part, active silica flour 30-70 part, zeolite powder 20-70 part, polycarboxylic acid series high efficiency water reducing agent 4-8 part, monoethanolamine benzoate 2-6 part, palmitinic acid 0.5-2.3 part, sodium hydroxide 2-4 part, stearic acid 0.3-1.5 part, polysiloxane emulsion 3-5.6 part, water 70-120 part.
2. concrete special in ocean environment according to claim 1, it is characterized in that, its raw material comprises following component by weight: cement 90-120 part, stone 170-220 part, yellow ground 185-210 part, Machine-made Sand 40-55 part, melon seeds sheet 100-160 part, carbon nanotube 30-36 part, basalt fibre 19-26 part, active silica flour 48-61 part, zeolite powder 48-56 part, polycarboxylic acid series high efficiency water reducing agent 5.3-6.2 part, monoethanolamine benzoate 3.4-4.6 part, palmitinic acid 1.2-2.1 part, sodium hydroxide 2.9-3.4 part, stearic acid 0.7-1.1 part, polysiloxane emulsion 3.9-4.5 part, water 95-110 part.
3. concrete special in ocean environment according to claim 1 or 2, it is characterized in that, its raw material comprises following component by weight: cement 100 parts, 200 parts, stone, yellow ground 200 parts, Machine-made Sand 50 parts, melon seeds sheet 150 parts, carbon nanotube 33 parts, basalt fibre 21 parts, active silica flour 52 parts, zeolite powder 53 parts, polycarboxylic acid series high efficiency water reducing agent 5.8 parts, monoethanolamine benzoate 3.9 parts, palmitinic acid 1.6 parts, 3.2 parts, sodium hydroxide, stearic acid 0.9 part, polysiloxane emulsion 4.2 parts, 100 parts, water.
4. concrete special in ocean environment according to any one of claim 1-3, is characterized in that, in described active silica flour, the content of silicon-dioxide is more than 95%.
5. concrete special in ocean environment according to any one of claim 1-4, is characterized in that, described polycarboxylic acid series high efficiency water reducing agent is prepared according to following technique; Add in reaction unit after by weight 30-40 part allyl polyglycol, 1-3 part maleic anhydride, 1.3-2.8 part β-dimethyl-aminoethylmethacrylate and 40-50 part water being mixed and stir, 0.2-0.6 part Potassium Persulphate is added after passing into nitrogen, stirring is incubated 5-8h after being warming up to 65-80 DEG C, utilizes the pH of triethylamine regulation system for obtaining described high-efficiency water-reducing agent of poly-carboxylic acid after 7-9 after being cooled to 30-38 DEG C.
6. concrete special in ocean environment according to any one of claim 1-5, is characterized in that, described polycarboxylic acid series high efficiency water reducing agent is prepared according to following technique; Add in reaction unit after by weight 33-36 part allyl polyglycol, 1.6-2.3 part maleic anhydride, 1.9-2.2 part β-dimethyl-aminoethylmethacrylate and 43-46 part water being mixed and stir, 0.3-0.5 part Potassium Persulphate is added after passing into nitrogen, being incubated 6.5-7.2h after being warming up to 70-75 DEG C, after being cooled to 33-36 DEG C, utilizing the pH of triethylamine regulation system for obtaining described high-efficiency water-reducing agent of poly-carboxylic acid after 7-8.
7. concrete special in ocean environment according to any one of claim 1-6, is characterized in that, described polycarboxylic acid series high efficiency water reducing agent is prepared according to following technique; Stir adding in reaction unit after 34 parts of allyl polyglycols, 2 parts of maleic anhydrides, 2.1 parts of β-dimethyl-aminoethylmethacrylates and 44 parts of water mixing by weight, 0.4 part of Potassium Persulphate is added after passing into nitrogen, be incubated 7h after being warming up to 74 DEG C, after being cooled to 35 DEG C, utilize the pH of triethylamine regulation system to obtain described high-efficiency water-reducing agent of poly-carboxylic acid after 7.
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| CN107032673A (en) * | 2017-04-11 | 2017-08-11 | 南华大学 | A kind of chemical resistance of concrete high-strength and high-ductility concrete and preparation method thereof |
| WO2018103814A1 (en) | 2016-12-05 | 2018-06-14 | Art Carbon International Ag | Construction material composition comprising carbon nanotubes, stabilized aqueous carbon nanotube dispersion, and methods for the preparation thereof |
| CN109851294A (en) * | 2019-01-14 | 2019-06-07 | 海南大学 | A kind of maritime concrete material and preparation method thereof |
| CN111362617A (en) * | 2019-12-31 | 2020-07-03 | 桂林理工大学 | Marine concrete admixture and preparation method thereof |
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Application publication date: 20150506 |