CN104446239A - High-density freezing-tolerant concrete - Google Patents
High-density freezing-tolerant concrete Download PDFInfo
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- CN104446239A CN104446239A CN201410636644.XA CN201410636644A CN104446239A CN 104446239 A CN104446239 A CN 104446239A CN 201410636644 A CN201410636644 A CN 201410636644A CN 104446239 A CN104446239 A CN 104446239A
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Abstract
The invention discloses high-density freezing-tolerant concrete. The high-density freezing-tolerant concrete comprises the following raw materials: ordinary Portland cement, sea sand, gravel, water, silicon powder, lithium slag powder, fly ash, iron tailing sand, polypropylene fiber, glass fiber, magnesium powder, hydrogen peroxide, ethylene diamine-tetramethyl phosphoric acid, sodium dodecylbenzene sulfonate, phosphoric butanetricarboxylic acid, iron oxide yellow, sodium thiosulfate, urea, sodium chloride, ethylene glycol and a water-reducing agent. The high-density freezing-tolerant concrete disclosed by the invention has the advantages of good freezing tolerance, high density and good durability.
Description
Technical field
The present invention relates to technical field of concrete, particularly relate to that a kind of high compact is resistance to freezes concrete.
Background technology
Along with the quickening of industrial development and urbanization process, concrete also becomes the preferred material of the buildings such as road, dam and bridge.Along with the proposition of concrete high-performance, concrete durability has more and more caused the extensive concern of each side.Concrete weather resistance refers to the resistivity of concrete structure to weather, chemical corrosion, physical action or other destructive process any, alternatively concrete structure regulation working life in, under various envrionment conditions effect, do not need consolidation process and keep its security, usability and aesthetic appearance.With regard to concrete material, although the unit total energy consumption produced is very low, huge consumption and general technical low SI, make it cause very large pressure to resource, the energy and environment generally.Concrete density and frost resistance are the important factors affecting concrete durability.Concrete structure Service Environment is very complicated often, and construction is inevitable in the winter time, and current concrete density and frost resistance can not meet the requirement of society, need to research and develop further.Therefore develop a kind of high compact resistance to concrete frozen and vital role is served to construction saving society of China.
Summary of the invention
The present invention proposes that a kind of high compact is resistance to freezes concrete, its frost resistance is good, and degree of compactness is high, good endurance.
The present invention proposes that a kind of high compact is resistance to freezes concrete, its raw material comprises following component by weight: ordinary Portland cement 130-250 part, sea sand 180-300 part, rubble 300-600 part, water 60-100 part, silica flour 15-35 part, lithium ground-slag 10-25 part, flyash 12-30 part, iron tailings sand 5-15 part, polypropylene fibre 3-15 part, glass fibre 10-15 part, magnesium powder 0.8-2.3 part, hydrogen peroxide 0.5-1.0 part, ethylene diamine-tetramethyl-phosphonic acids 0.5-0.9 part, Sodium dodecylbenzene sulfonate 0.1-0.16 part, phosphine butane tricarboxylic acid 0.2-0.36 part, iron oxide yellow 0.3-0.6 part, Sulfothiorine 1.2-2.3 part, urea 0.3-0.9 part, sodium-chlor 0.5-1.2 part, ethylene glycol 0.5-1 part, water reducer 2-6 part.
Preferably, its raw material comprises following component by weight: ordinary Portland cement 195-215 part, sea sand 255-265 part, rubble 459-500 part, water 79-83 part, silica flour 27-30 part, lithium ground-slag 17-21 part, flyash 19-23 part, iron tailings sand 9-12 part, polypropylene fibre 11-13 part, glass fibre 12-13.9 part, magnesium powder 1.6-1.9 part, hydrogen peroxide 0.7-0.86 part, ethylene diamine-tetramethyl-phosphonic acids 0.7-0.83 part, Sodium dodecylbenzene sulfonate 0.13-0.15 part, phosphine butane tricarboxylic acid 0.28-0.32 part, iron oxide yellow 0.46-0.53 part, Sulfothiorine 1.9-2.1 part, urea 0.6-0.72 part, sodium-chlor 0.8-1.1 part, ethylene glycol 0.8-0.95 part, water reducer 3.4-4.2 part.
Preferably, its raw material comprises following component by weight: ordinary Portland cement 210 parts, 260 parts, the sand in sea, rubble 485 parts, 80 parts, water, silica flour 29 parts, lithium ground-slag 19.6 parts, 20.3 parts, flyash, 11.5 parts, iron tailings sand, polypropylene fibre 11.7 parts, 13.6 parts, glass fibre, 1.78 parts, magnesium powder, 0.75 part, hydrogen peroxide, ethylene diamine-tetramethyl-phosphonic acids 0.79 part, Sodium dodecylbenzene sulfonate 0.14 part, phosphine butane tricarboxylic acid 0.3 part, iron oxide yellow 0.51 part, 2.0 parts, Sulfothiorine, 0.64 part, urea, 0.88 part, sodium-chlor, ethylene glycol 0.87 part, water reducer 3.8 parts.
Preferably, in described iron tailings sand, the content of silicon-dioxide is 40-60wt%, and the content of aluminum oxide is 8-10wt%, and the content of ferric oxide is 8-10wt%; The apparent density 3000-3800kg/m of iron tailings sand
3, loose bulk density is 1500-2100kg/m
3, voidage is 30-38%.
Preferably, described water reducer is maleic acid type water reducer.
Preferably, described maleic acid type water reducer is prepared according to following technique: by weight by 5-10 part maleic anhydride, 50-70 part methoxy poly (ethylene glycol), 0.1-0.2 part Resorcinol, 0.05-0.12 part Red copper oxide, 2-3 part tosic acid, after the mixing of 50-70 part dimethylbenzene, be heated with stirring to 66-72 DEG C, stirring reaction 0.3-0.7h, 82-95 DEG C is warming up to the V-bar of 3-5 DEG C/min, stirring reaction 3-4h, 100-108 DEG C is warming up to the mean rate of 3-7 DEG C/min, stirring reaction 8.5-10h, be cooled to room temperature, except removal xylene obtains intermediate monomer, 50-80 part water is added in flask, be heated to 90-96 DEG C, drip 50-80 part intermediate monomer aqueous solution, 3-5 part α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution and 3-5 part persulfate aqueous solution, wherein, in the intermediate monomer aqueous solution, the massfraction of intermediate monomer is 40-55wt%, in α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution, the massfraction of α-acrylamide-Alpha-Methyl sodium allylsulfonate is 45-55wt%, in persulfate aqueous solution, the massfraction of Potassium Persulphate is 50-60wt%, 0.4-1 part mercaptoethanol aqueous solution is dripped after stirring 40-60min, wherein, in the mercaptoethanol aqueous solution, the massfraction of mercaptoethanol is 35-60wt%, adjustment temperature is 86-94 DEG C, stirring reaction 1.5-2h, be warming up to 100-105 DEG C, stirring reaction 1-1.8h, regulate pH to neutral with ammoniacal liquor after being cooled to room temperature, described maleic acid type water reducer is obtained after drying.
Preferably, in the preparation process of maleic acid type water reducer, drip in the process of the intermediate monomer aqueous solution, α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution and persulfate aqueous solution, time for adding is 2-3.5h.
Preferably, in the preparation process of maleic acid type water reducer, dripping time for adding in the process of the mercaptoethanol aqueous solution is 4-4.5h.
High compact of the present invention is resistance to freezes concrete, and in its raw material, the weight part of ordinary Portland cement can be 135, 142, 145, 148.6, 150, 152.3, 159, 162, 168, 173, 178, 182, 190, 200, 203.8, 214.6, 220, 226, 230, 234.6, 242, 245.6 parts, the weight part of extra large sand can be 186, 190, 195.3, 198.7, 200, 205.9, 209.7, 212, 218, 220, 226, 235, 242, 250, 256, 263, 268, 272, 279, 280, 286, 290, 293.5, 297.6 parts, the weight part of rubble can be 306, 312, 323, 334, 342.6, 347.8, 351.3, 362.5, 372, 378, 380, 382.6, 387.8, 390, 397.5, 400, 405, 412, 453, 468, 493, 500.6, 523, 534, 546, 559, 567, 578, 583, 594, 598.6 parts, the weight part of water can be 60.5, 61, 63, 65, 68.9, 70, 70.5, 73, 75, 78, 79.4, 80.6, 82, 86, 89.4, 90, 90.5, 92, 94, 94.8, 95.6, 97, 98.5, 99.3 parts, the weight part of silica flour can be 15.6, 16, 16.3, 17, 17.5, 18, 18.9, 20, 20.3, 21, 21.6, 22, 22.5, 23, 23.6, 24, 24.5, 25, 25.8, 26, 26.7, 27.5, 28, 28.9, 30.5, 32, 32.6, 33, 33.5, 34, 34.8 parts, the weight part of lithium ground-slag can be 10.3, 11, 11.5, 12, 12.6, 13, 13.8, 14, 14.7, 15, 15.6, 16, 16.4, 17.9, 18, 18.3, 19, 19.3, 20, 20.3, 21.6, 22, 22.5, 23, 23.4, 24, 24.6 parts, the weight part of flyash can be 12.6, 13, 13.5, 14, 14.9, 15, 15.6, 16, 16.8, 17, 17.4, 18, 18.9, 19.5, 20, 20.6, 21, 21.3, 22, 22.5, 23.6, 24, 24.8, 25, 25.9, 26, 26.7, 27, 27.8, 28, 28.6, 29, 29.4 parts, the weight part of iron tailings sand can be 5.3, 6, 6.4, 7, 7.8, 8, 8.9, 9.5, 10, 10.6, 11, 11.3, 12.5, 13, 13.4, 14, 14.7 parts, the weight part of polypropylene fibre can be 3.5, 4, 4.6, 5, 5.3, 6, 6.8, 7, 7.6, 8, 8.9, 9, 9.4, 10, 10.3, 11.5, 12, 12.6, 13.5, 14, 14.6 parts, the weight part of glass fibre can be 10.3, 11, 11.5, 12.6, 13, 13.4, 14, 14.6 parts, the weight part of magnesium powder can be 0.86, 0.9, 0.96, 1.0, 1.05, 1.1, 1.16, 1.2, 1.25, 1.3, 1.34, 1.4, 1.46, 1.5, 1.53, 1.67, 1.8, 1.89, 1.95, 2.0, 2.03, 2.1, 2.15, 2.2, 2.26 parts, the weight part of hydrogen peroxide can be 0.56, 0.6, 0.67, 0.73, 0.8, 0.9, 0.94, 0.98 part, the weight part of ethylene diamine-tetramethyl-phosphonic acids can be 0.53, 0.57, 0.6, 0.64, 0.68, 0.73, 0.8, 0.82, 0.87 part, the weight part of Sodium dodecylbenzene sulfonate can be 0.11, 0.12 part, the weight part of phosphine butane tricarboxylic acid can be 0.23, 0.24, 0.26, 0.27, 0.33, 0.34, 0.35 part, the weight part of iron oxide yellow can be 0.32, 0.37, 0.4, 0.42, 0.47, 0.48, 0.49, 0.5, 0.52, 0.56, 0.57, 0.58, 0.59 part, the weight part of Sulfothiorine can be 1.23, 1.3, 1.35, 1.4, 1.46, 1.5, 1.56, 1.6, 1.68, 1.7, 1.79, 1.8, 1.85, 1.94, 2.03, 2.2, 2.23 parts, the weight part of urea can be 0.34, 0.4, 0.45, 0.5, 0.56, 0.62, 0.7, 0.78, 0.8, 0.85, 0.9, 0.94 part, the weight part of sodium-chlor can be 0.53, 0.6, 0.64, 0.7, 0.75, 0.86, 0.9, 0.94, 1.0, 1.05, 1.16 parts, the weight part of ethylene glycol can be 0.53, 0.57, 0.6, 0.64, 0.7, 0.75, 0.83, 0.89, 0.9, 0.94 part, the weight part of water reducer can be 2.3, 2.4, 2.8, 3, 3.5, 3.7, 4, 4.6, 4.86, 5, 5.3, 5.7, 5.86 part.
In the present invention, mix lithium ground-slag, silica flour, flyash and iron tailings sand, concrete intensity, scour & wear resistance and frost resistance is improve while cost-saving, and lithium ground-slag has certain adsorption for chlorion, concrete resisting chloride ion penetration can be improved, improve concrete weather resistance, ethylene diamine-tetramethyl-phosphonic acids, Sodium dodecylbenzene sulfonate, phosphine butane tricarboxylic acid coordinate iron oxide yellow as retardant, its incorporation is few, concrete time of coagulation can be regulated, after composite with water reducer, on concrete early strength development without impact, there is high water reducing rate, high water conservation, high protect plasticity energy, its adaptability good, freeze proof, impervious, tension, High anti bending strength with the silica flour added, lithium ground-slag, flyash, Sulfothiorine coordinates urea as antifreezing component, reduce concrete freezing point, make ordinary Portland cement wherein still can continue aquation under subzero temperature, coordinate sodium-chlor as accelerating component, improve concrete early strength, the expansion stress that opposing water freezing produces and reduction freezing point, concrete is made to reach as early as possible or exceed critical temperature of enduring cold, Sulfothiorine, sodium-chlor coordinates with water reducer, decrease mixing water content, refinement kapillary, and make ice crystal refinement and dispersed, alleviate concrete rupture stress, improve concrete workability, improve concrete intensity and weather resistance, in addition, the silica flour added, lithium ground-slag, flyash and iron tailings sand are Sulfothiorine, sodium-chlor and water reducer provide carrier, make it can penetrate in the space of carrier, and be uniformly dispersed, avoid the caking that makes moist, improve Sulfothiorine, the performance of sodium-chlor and water reducer, improve concrete early strength, prevent concrete frost damage, in addition, urea coordinates with Sulfothiorine, sodium-chlor, improve concrete frost resistance, the magnesium powder added, as air entraining agent, because the effect of chemistry or physics produces gas in concrete preparation process, is evenly distributed in slip, the space between concrete is filled with while making it volumetric expansion, improve its degree of compactness, decrease concrete shrinkability, improve concrete water-repellancy, the ethylene glycol added has the effect of resistance rust, coordinates, improves concrete erosion resistance, thus improve concrete weather resistance with lithium ground-slag, the polypropylene fibre added and glass fibre cooperatively interact, reduce because ethylene diamine-tetramethyl-phosphonic acids, Sodium dodecylbenzene sulfonate, phosphine butane tricarboxylic acid, iron oxide yellow, Sulfothiorine, urea, ethylene glycol, water reducer add the reduction of the concrete strength caused, improve concrete resistance to impact shock and folding strength, prevent concrete early-age crack simultaneously.
In the present invention, by selecting suitable raw material, control the content of raw material, make the collaborative promotion of the performance of each raw material, resistance to its intensity of concrete of freezing of the high compact obtained is high, and high compact, frost resistance is good, good endurance.
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.
Embodiment 1
High compact of the present invention is resistance to freezes concrete, its raw material comprises following component by weight: ordinary Portland cement 130 parts, 300 parts, the sand in sea, rubble 300 parts, 100 parts, water, silica flour 15 parts, lithium ground-slag 25 parts, 12 parts, flyash, 15 parts, iron tailings sand, polypropylene fibre 3 parts, 15 parts, glass fibre, 0.8 part, magnesium powder, 1.0 parts, hydrogen peroxide, ethylene diamine-tetramethyl-phosphonic acids 0.5 part, Sodium dodecylbenzene sulfonate 0.16 part, phosphine butane tricarboxylic acid 0.2 part, iron oxide yellow 0.6 part, 1.2 parts, Sulfothiorine, 0.9 part, urea, 0.5 part, sodium-chlor, ethylene glycol 1 part, water reducer 2 parts.
Embodiment 2
High compact of the present invention is resistance to freezes concrete, its raw material comprises following component by weight: ordinary Portland cement 250 parts, 180 parts, the sand in sea, rubble 600 parts, 60 parts, water, silica flour 35 parts, lithium ground-slag 10 parts, 30 parts, flyash, 5 parts, iron tailings sand, polypropylene fibre 15 parts, 10 parts, glass fibre, 2.3 parts, magnesium powder, 0.5 part, hydrogen peroxide, ethylene diamine-tetramethyl-phosphonic acids 0.9 part, Sodium dodecylbenzene sulfonate 0.1 part, phosphine butane tricarboxylic acid 0.36 part, iron oxide yellow 0.3 part, 2.3 parts, Sulfothiorine, 0.3 part, urea, 1.2 parts, sodium-chlor, ethylene glycol 0.5 part, water reducer 6 parts,
Wherein, in described iron tailings sand, the content of silicon-dioxide is 55wt%, and the content of aluminum oxide is 9.6wt%, and the content of ferric oxide is 9.5wt%; The apparent density 3500kg/m of iron tailings sand
3, loose bulk density is 1950kg/m
3, voidage is 36%; Described water reducer is maleic acid type water reducer;
Described maleic acid type water reducer is prepared according to following technique: by weight by after 5 parts of maleic anhydrides, 70 parts of methoxy poly (ethylene glycol)s, 0.1 part of Resorcinol, 0.12 part of Red copper oxide, 2 parts of tosic acid, 70 parts of dimethylbenzene mixing, be heated with stirring to 66 DEG C, stirring reaction 0.7h, 82 DEG C are warming up to the V-bar of 3 DEG C/min, stirring reaction 4h, is warming up to 100 DEG C with the mean rate of 3 DEG C/min, stirring reaction 10h, be cooled to room temperature, except removal xylene obtains intermediate monomer, 50 parts of water are added in flask, be heated to 96 DEG C, drip 50 parts of intermediate monomer aqueous solution, 5 parts of α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solutions and 3 parts of persulfate aqueous solutions, wherein, in the intermediate monomer aqueous solution, the massfraction of intermediate monomer is 55wt%, in α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution, the massfraction of α-acrylamide-Alpha-Methyl sodium allylsulfonate is 45wt%, in persulfate aqueous solution, the massfraction of Potassium Persulphate is 60wt%, 1 part of mercaptoethanol aqueous solution is dripped after stirring 40min, wherein, in the mercaptoethanol aqueous solution, the massfraction of mercaptoethanol is 35wt%, temperature is regulated to be 94 DEG C, stirring reaction 1.5h, be warming up to 105 DEG C, stirring reaction 1h, regulate pH to neutral with ammoniacal liquor after being cooled to room temperature, described maleic acid type water reducer is obtained after drying, wherein, drip in the process of the intermediate monomer aqueous solution, α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution and persulfate aqueous solution, time for adding is 2h, dripping time for adding in the process of the mercaptoethanol aqueous solution is 4.5h.
Embodiment 3
High compact of the present invention is resistance to freezes concrete, its raw material comprises following component by weight: ordinary Portland cement 226 parts, 205.9 parts, the sand in sea, rubble 334 parts, 80.6 parts, water, silica flour 22.5 parts, lithium ground-slag 13 parts, 19.5 parts, flyash, 12.5 parts, iron tailings sand, polypropylene fibre 10.3 parts, 12.6 parts, glass fibre, 1.3 parts, magnesium powder, 0.94 part, hydrogen peroxide, ethylene diamine-tetramethyl-phosphonic acids 0.73 part, Witco 1298 Soft Acid 0.11 part, phosphine butane tricarboxylic acid 0.34 part, iron oxide yellow 0.56 part, 1.85 parts, Sulfothiorine, 0.78 part, urea, 0.86 part, sodium-chlor, ethylene glycol 0.89 part, water reducer 4.6 parts,
Wherein, in described iron tailings sand, the content of silicon-dioxide is 60wt%, and the content of aluminum oxide is 8wt%, and the content of ferric oxide is 10wt%; The apparent density 3000kg/m of iron tailings sand
3, loose bulk density is 2100kg/m
3, voidage is 30%; Described water reducer is maleic acid type water reducer;
Described maleic acid type water reducer is prepared according to following technique: by weight by after 10 parts of maleic anhydrides, 50 parts of methoxy poly (ethylene glycol)s, 0.2 part of Resorcinol, 0.05 part of Red copper oxide, 3 parts of tosic acid, 50 parts of dimethylbenzene mixing, be heated with stirring to 72 DEG C, stirring reaction 0.3h, 95 DEG C are warming up to the V-bar of 5 DEG C/min, stirring reaction 4h, is warming up to 108 DEG C with the mean rate of 7 DEG C/min, stirring reaction 8.5h, be cooled to room temperature, except removal xylene obtains intermediate monomer, 80 parts of water are added in flask, be heated to 90 DEG C, drip 80 parts of intermediate monomer aqueous solution, 3 parts of α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solutions and 5 parts of persulfate aqueous solutions, wherein, in the intermediate monomer aqueous solution, the massfraction of intermediate monomer is 40wt%, in α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution, the massfraction of α-acrylamide-Alpha-Methyl sodium allylsulfonate is 55wt%, in persulfate aqueous solution, the massfraction of Potassium Persulphate is 50wt%, 0.4 part of mercaptoethanol aqueous solution is dripped after stirring 60min, wherein, in the mercaptoethanol aqueous solution, the massfraction of mercaptoethanol is 60wt%, temperature is regulated to be 86 DEG C, stirring reaction 2h, be warming up to 100 DEG C, stirring reaction 1.8h, regulate pH to neutral with ammoniacal liquor after being cooled to room temperature, described maleic acid type water reducer is obtained after drying, wherein, drip in the process of the intermediate monomer aqueous solution, α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution and persulfate aqueous solution, time for adding is 3.5h, dripping time for adding in the process of the mercaptoethanol aqueous solution is 4h.
Embodiment 4
High compact of the present invention is resistance to freezes concrete, its raw material comprises following component by weight: ordinary Portland cement 210 parts, 260 parts, the sand in sea, rubble 485 parts, 80 parts, water, silica flour 29 parts, lithium ground-slag 19.6 parts, 20.3 parts, flyash, 11.5 parts, iron tailings sand, polypropylene fibre 11.7 parts, 13.6 parts, glass fibre, 1.78 parts, magnesium powder, 0.75 part, hydrogen peroxide, ethylene diamine-tetramethyl-phosphonic acids 0.79 part, Sodium dodecylbenzene sulfonate 0.14 part, phosphine butane tricarboxylic acid 0.3 part, iron oxide yellow 0.51 part, 2.0 parts, Sulfothiorine, 0.64 part, urea, 0.88 part, sodium-chlor, ethylene glycol 0.87 part, water reducer 3.8 parts,
Wherein, in described iron tailings sand, the content of silicon-dioxide is 40wt%, and the content of aluminum oxide is 10wt%, and the content of ferric oxide is 8wt%; The apparent density 3800kg/m of iron tailings sand
3, loose bulk density is 1500kg/m
3, voidage is 38%; Described water reducer is maleic acid type water reducer;
Described maleic acid type water reducer is prepared according to following technique: by weight by after 8 parts of maleic anhydrides, 59 parts of methoxy poly (ethylene glycol)s, 0.15 part of Resorcinol, 0.09 part of Red copper oxide, 2.6 parts of tosic acid, 66 parts of dimethylbenzene mixing, be heated with stirring to 70 DEG C, stirring reaction 0.56h, 95 DEG C are warming up to the V-bar of 4 DEG C/min, stirring reaction 3.6h, 105 DEG C are warming up to the mean rate of 5 DEG C/min, stirring reaction 9.3h, be cooled to room temperature, except removal xylene obtains intermediate monomer, 76 parts of water are added in flask, be heated to 95 DEG C, drip 77 parts of intermediate monomer aqueous solution, 4.2 parts of α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solutions and 3.7 parts of persulfate aqueous solutions, wherein, in the intermediate monomer aqueous solution, the massfraction of intermediate monomer is 50wt%, in α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution, the massfraction of α-acrylamide-Alpha-Methyl sodium allylsulfonate is 52wt%, in the aqueous solution of Potassium Persulphate, Potassium Persulphate massfraction is 57wt%, 0.59 part of mercaptoethanol aqueous solution is dripped after stirring 48min, wherein, in the mercaptoethanol aqueous solution, the massfraction of mercaptoethanol is 52wt%, temperature is regulated to be 90 DEG C, stirring reaction 1.7h, be warming up to 103 DEG C, stirring reaction 1.6h, regulate pH to neutral with ammoniacal liquor after being cooled to room temperature, described maleic acid type water reducer is obtained after drying, wherein, drip in the process of the intermediate monomer aqueous solution, α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution and persulfate aqueous solution, time for adding is 3.2h, dripping time for adding in the process of the mercaptoethanol aqueous solution is 4.3h.
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 (8)
1. a high compact is resistance to freezes concrete, it is characterized in that, its raw material comprises following component by weight: ordinary Portland cement 130-250 part, sea sand 180-300 part, rubble 300-600 part, water 60-100 part, silica flour 15-35 part, lithium ground-slag 10-25 part, flyash 12-30 part, iron tailings sand 5-15 part, polypropylene fibre 3-15 part, glass fibre 10-15 part, magnesium powder 0.8-2.3 part, hydrogen peroxide 0.5-1.0 part, ethylene diamine-tetramethyl-phosphonic acids 0.5-0.9 part, Sodium dodecylbenzene sulfonate 0.1-0.16 part, phosphine butane tricarboxylic acid 0.2-0.36 part, iron oxide yellow 0.3-0.6 part, Sulfothiorine 1.2-2.3 part, urea 0.3-0.9 part, sodium-chlor 0.5-1.2 part, ethylene glycol 0.5-1 part, water reducer 2-6 part.
2. high compact is resistance to according to claim 1 freezes concrete, it is characterized in that, its raw material comprises following component by weight: ordinary Portland cement 195-215 part, sea sand 255-265 part, rubble 459-500 part, water 79-83 part, silica flour 27-30 part, lithium ground-slag 17-21 part, flyash 19-23 part, iron tailings sand 9-12 part, polypropylene fibre 11-13 part, glass fibre 12-13.9 part, magnesium powder 1.6-1.9 part, hydrogen peroxide 0.7-0.86 part, ethylene diamine-tetramethyl-phosphonic acids 0.7-0.83 part, Sodium dodecylbenzene sulfonate 0.13-0.15 part, phosphine butane tricarboxylic acid 0.28-0.32 part, iron oxide yellow 0.46-0.53 part, Sulfothiorine 1.9-2.1 part, urea 0.6-0.72 part, sodium-chlor 0.8-1.1 part, ethylene glycol 0.8-0.95 part, water reducer 3.4-4.2 part.
3. according to claim 1 or 2, high compact is resistance to freezes concrete, it is characterized in that, its raw material comprises following component by weight: ordinary Portland cement 210 parts, 260 parts, the sand in sea, rubble 485 parts, 80 parts, water, silica flour 29 parts, lithium ground-slag 19.6 parts, 20.3 parts, flyash, 11.5 parts, iron tailings sand, polypropylene fibre 11.7 parts, 13.6 parts, glass fibre, 1.78 parts, magnesium powder, 0.75 part, hydrogen peroxide, ethylene diamine-tetramethyl-phosphonic acids 0.79 part, Sodium dodecylbenzene sulfonate 0.14 part, phosphine butane tricarboxylic acid 0.3 part, iron oxide yellow 0.51 part, 2.0 parts, Sulfothiorine, 0.64 part, urea, 0.88 part, sodium-chlor, ethylene glycol 0.87 part, water reducer 3.8 parts.
4. according to any one of claim 1-3, high compact is resistance to freezes concrete, and it is characterized in that, in described iron tailings sand, the content of silicon-dioxide is 40-60wt%, and the content of aluminum oxide is 8-10wt%, and the content of ferric oxide is 8-10wt%; The apparent density 3000-3800kg/m of iron tailings sand
3, loose bulk density is 1500-2100kg/m
3, voidage is 30-38%.
5. according to any one of claim 1-4, high compact is resistance to freezes concrete, and it is characterized in that, described water reducer is maleic acid type water reducer.
6. high compact is resistance to according to claim 5 freezes concrete, it is characterized in that, described maleic acid type water reducer is prepared according to following technique: by weight by 5-10 part maleic anhydride, 50-70 part methoxy poly (ethylene glycol), 0.1-0.2 part Resorcinol, 0.05-0.12 part Red copper oxide, 2-3 part tosic acid, after the mixing of 50-70 part dimethylbenzene, be heated with stirring to 66-72 DEG C, stirring reaction 0.3-0.7h, 82-95 DEG C is warming up to the V-bar of 3-5 DEG C/min, stirring reaction 3-4h, 100-108 DEG C is warming up to the mean rate of 3-7 DEG C/min, stirring reaction 8.5-10h, be cooled to room temperature, except removal xylene obtains intermediate monomer, 50-80 part water is added in flask, be heated to 90-96 DEG C, drip 50-80 part intermediate monomer aqueous solution, 3-5 part α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution and 3-5 part persulfate aqueous solution, wherein, in the intermediate monomer aqueous solution, the massfraction of intermediate monomer is 40-55wt%, in α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution, the massfraction of α-acrylamide-Alpha-Methyl sodium allylsulfonate is 45-55wt%, in persulfate aqueous solution, the massfraction of Potassium Persulphate is 50-60wt%, 0.4-1 part mercaptoethanol aqueous solution is dripped after stirring 40-60min, wherein, in the mercaptoethanol aqueous solution, the massfraction of mercaptoethanol is 35-60wt%, adjustment temperature is 86-94 DEG C, stirring reaction 1.5-2h, be warming up to 100-105 DEG C, stirring reaction 1-1.8h, regulate pH to neutral with ammoniacal liquor after being cooled to room temperature, described maleic acid type water reducer is obtained after drying.
7. high compact is resistance to according to claim 6 freezes concrete, it is characterized in that, in the preparation process of maleic acid type water reducer, drip in the process of the intermediate monomer aqueous solution, α-acrylamide-Alpha-Methyl propene sulfonic acid sodium water solution and persulfate aqueous solution, time for adding is 2-3.5h.
8. according to claim 6 or 7, high compact is resistance to freezes concrete, it is characterized in that, in the preparation process of maleic acid type water reducer, dripping time for adding in the process of the mercaptoethanol aqueous solution is 4-4.5h.
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Application publication date: 20150325 |