CN112939552A - Concrete prepared from mixing station waste slurry and preparation method thereof - Google Patents
Concrete prepared from mixing station waste slurry and preparation method thereof Download PDFInfo
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- 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
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- 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
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Abstract
The application relates to the technical field of concrete, and particularly discloses concrete prepared from mixing plant waste slurry water and a preparation method thereof. The concrete prepared from the waste slurry water of the mixing plant comprises the following raw materials in parts by weight: 170 parts of water 110-containing material, 40-60 parts of waste slurry, 260 parts of cement 190-containing material, 1060 parts of stone 1040-containing material, 830 parts of sand 720-containing material, 65-85 parts of fly ash, 60-100 parts of mineral powder, 4-7 parts of water reducing agent and 0.3-0.5 part of anticorrosive rust inhibitor; the preparation method comprises the following steps: and adding water into the waste slurry water, uniformly mixing, mixing other raw materials, and uniformly mixing to obtain the concrete. The concrete prepared by adopting the mixing plant waste slurry water has the advantage of strength enhancement through the synergistic effect between the raw materials, and can be used for recycling the waste slurry water of the mixing plant.
Description
Technical Field
The application relates to the technical field of concrete, in particular to concrete prepared by adopting mixing station waste slurry water and a preparation method thereof.
Background
With the continuous deepening of the urbanization process in China, the demand of concrete as one of the most important construction materials in civil engineering and building engineering is increasing, after the concrete is produced in a mixing plant, water is used for cleaning mixing equipment, transportation equipment and waste water generated on the ground of the discharging position of a mixing plant to form a waste water mixture, and waste slurry contains not only cement which is not completely hydrated, admixture which is not hydrated, clay, fine sand and other solid particles, but also a lot of hydrated ions.
At present, in the related art, sand, stones and wastewater are separated and recovered by a sand-stone separator, then the residual wastewater mixture is subjected to filter pressing treatment by a filter press to obtain waste slurry, and then the waste slurry is directly mixed with concrete aggregate to prepare concrete, so that the obtained concrete has low strength.
Disclosure of Invention
In order to enhance the strength of concrete, the application provides concrete prepared by adopting the waste slurry water of a mixing plant and a preparation method thereof.
In a first aspect, the concrete prepared by using the mixing station waste slurry adopts the following technical scheme: the concrete prepared from the mixing station waste slurry water is prepared from the following raw materials in parts by weight: 170 parts of water 110-containing material, 40-60 parts of waste slurry, 260 parts of cement 190-containing material, 1060 parts of stone 1040-containing material, 830 parts of sand 720-containing material, 65-85 parts of fly ash, 60-100 parts of mineral powder, 4-7 parts of water reducing agent and 0.3-0.5 part of anticorrosive rust inhibitor;
wherein the solid content of the waste slurry is 6-10%.
By adopting the technical scheme, the concrete has good compressive strength and bending strength, the compressive strength is 32.5-34.9MPa, the bending strength is 5.88-7.46MPa, and the concrete also has high corrosion resistance coefficient which is 0.963-0.978.
The water, the cement, the sand and the pebbles are conventional materials of concrete, the fly ash is an artificial pozzolanic mixed material, can be chemically reacted with calcium hydroxide or other alkaline earth metal hydroxides in the concrete under the condition of hydrothermal treatment to generate a compound with hydraulic gelation performance, and the fly ash is doped into the concrete, so that the water consumption can be reduced, and the strength of the concrete can be increased; the mineral powder is adopted, so that the concrete has good mechanical property, exists in the concrete in a micro-aggregate form, improves the pore structure in the concrete, refines and homogenizes pores, improves the compactness of the concrete, can improve the impermeability of the concrete, and can inhibit the alkali aggregate reaction so as to strengthen the strength of the concrete; by adopting the water reducing agent, the water reducing agent can enable cement to form a flocculation structure under the action of molecular attraction of cement particles, so that the compactness of concrete is improved, and the erosion of chloride ions is reduced, thereby improving the strength of the concrete.
The waste slurry water contains sulfate, which is absorbed into concrete under the action of concrete capillary, and the concrete exposed in the atmosphere evaporates water due to the action of the capillary, mineral substances dissolved in the water are concentrated and separated out, so that the water is remained on the surface and the inside of the concrete, and the sulfate can react with calcium hydroxide in the concrete to generate expansion products, which can cause local cracking of the concrete and reduce the strength.
In the application, the synergistic effect among the raw materials such as cement, sand, pebbles, fly ash, mineral powder, water reducing agent and anticorrosive rust inhibitor can improve the sulfate corrosion resistance of concrete and also has the performance of improving the strength of concrete.
Preferably, the feed additive is prepared from the following raw materials in parts by weight: 120 portions of water-containing material, 45-55 portions of waste slurry water, 260 portions of cement-containing material, 1045 portions of stone-containing material, 1055 portions of sand 780-containing material, 70-80 portions of fly ash, 65-85 portions of mineral powder, 5-7 portions of water reducing agent and 0.4-0.5 portion of corrosion-resistant rust inhibitor.
By adopting the technical scheme, the weight ratio of water, waste slurry, cement, stones, sand, fly ash, mineral powder, water reducing agent and anticorrosive rust inhibitor is optimized, so that the performances of the water reducing agent and the anticorrosive rust inhibitor can be improved, and the strength of concrete is improved.
Preferably, the corrosion and rust inhibitor is prepared from sodium molybdate, ammonium thiocyanate, tetraethylenepentamine and 1, 4-butynediol, and the weight ratio of the sodium molybdate, the ammonium thiocyanate, the tetraethylenepentamine and the 1, 4-butynediol is (290-) -310): (150-170): (2-4): (190-210).
By adopting the technical scheme, sodium molybdate, ammonium thiocyanate, tetraethylenepentamine and 1, 4-butynediol also have chloride ions in the waste slurry, the steel bar in the concrete is corroded due to the action of the chloride ions, the sodium molybdate in the corrosion and corrosion inhibitor is a cathode inhibitory corrosion inhibitor, the sodium molybdate reacts with the steel bar in the concrete to form a surface film, the surface film is particularly compact but has a plurality of micropores, and the ammonium thiocyanate and the tetraethylenepentamine contain a large amount of sulfydryl and amino groups, so that an adsorption layer can be formed on the surface of the steel bar to form a compound film which can prevent the chloride ions from permeating into the steel bar matrix, thereby inhibiting the corrosion of the steel bar, enhancing the corrosion resistance coefficient of the concrete, and further enhancing the strength of the concrete by the synergistic effect of the raw materials.
Preferably, the corrosion and rust inhibitor is prepared by the following method: and mixing sodium molybdate, ammonium thiocyanate, tetraethylenepentamine and 1, 4-butynediol, and uniformly stirring to obtain the corrosion and rust inhibitor.
By adopting the technical scheme, the raw materials are used for preparing the anticorrosion and rust-resistant agent, so that the anticorrosion and rust-resistant agent has the advantage of simple and convenient preparation, is more uniform and has better performance.
Preferably, the water reducing agent is a sulfamate water reducing agent.
Through adopting above-mentioned technical scheme, owing to adopt the sulfamate water reducing agent, sulfonic group in the sulfamate water reducing agent has very strong dispersion and water reducing effect, can improve the mobility of cement, benzene ring in the sulfamate water reducing agent has the hydrophobicity, can play fine dispersion effect, amino in the sulfamate water reducing agent has hydrophilicity, can generate interior hydrogen bond, the stability of reinforcing water reducing agent molecule, hydroxyl in the sulfamate water reducing agent can form the hydrogen bond on the cement surface, there is the slow setting effect to cement, and then improve the closely knit nature of concrete, improve the intensity of concrete.
Preferably, the sulfamate water reducing agent is prepared from raw materials of sodium sulfanilate, phenol, sodium hydroxide and formaldehyde, and the weight ratio of the sodium sulfanilate, the phenol, the sodium hydroxide and the formaldehyde is (375-: (290-310): (25-27): (415-435).
By adopting the technical scheme, the sodium aminobenzenesulfonate, the phenol and the formaldehyde are subjected to addition reaction under an alkaline condition, and the sodium hydroxide is used as a catalyst, so that the addition reaction can be accelerated, the fluidity of the cement is improved, and the water reducing effect is enhanced.
Preferably, the sulfamate water reducer is prepared by the following method: mixing sodium sulfanilate, phenol, sodium hydroxide and formaldehyde, uniformly stirring, raising the temperature to 60-80 ℃, and reacting for 2.5-3h to obtain the sulfamate water reducing agent.
By adopting the technical scheme, the method has the advantages of simple and stable preparation, and can accelerate the addition reaction and enhance the water reducing effect of the sulfamate water reducing agent by enabling the sodium sulfanilate, the phenol and the formaldehyde to react under the alkaline condition and taking the sodium hydroxide as the catalyst.
Preferably, the concrete also comprises 12-15 parts of wood palm fiber and 1.2-1.6 parts of wood wax oil.
By adopting the technical scheme, the wood palm fibers are fibers of the palm leaf sheaths, are tough and elastic, and can be mixed into concrete to strengthen the adhesion among the concrete, so that the strength of the concrete is strengthened; the wood wax oil is extracted from pure natural plants, can permeate into concrete, is tightly combined with the wood palm fibers, can ensure that the wood palm fibers are more uniformly dispersed in the concrete, has the performance of cracking prevention, and can enhance the strength of the concrete.
In a second aspect, the present application provides a method for preparing concrete by using mixing station waste slurry, which adopts the following technical scheme:
a preparation method of concrete prepared by adopting mixing station waste slurry water comprises the following steps:
s1: adding water into the waste slurry water, and uniformly mixing to obtain a mixture;
s2: uniformly mixing cement, sand, stones, fly ash and mineral powder to obtain a mixture;
s3: and (4) mixing the mixture obtained in the step S1, the mixture obtained in the step S2, a water reducing agent and an anticorrosive rust inhibitor, adding water, and uniformly stirring to obtain the concrete.
Wherein the weight ratio of the water consumption in the step S1 to the water consumption in the step S3 is (3-4): (7-8).
By adopting the technical scheme, the water reducing agent and the anticorrosive rust inhibitor are prepared and then mixed with other raw materials, so that the mixing is more uniform, the water reducing agent and the anticorrosive rust inhibitor can play a greater role, and the strength of concrete can be improved.
In a third aspect, the present application provides a method for preparing concrete by using mixing plant waste slurry, which adopts the following technical scheme:
a preparation method of concrete prepared by adopting mixing station waste slurry water comprises the following steps:
s1: adding water into the waste slurry water, and uniformly mixing to obtain a mixture;
s2: uniformly mixing cement, sand, stones, fly ash and mineral powder to obtain a mixture A;
s3: mixing the mixture obtained in the step S1 with the mixture obtained in the step S2, adding water, and uniformly stirring to obtain a mixture B;
s4: and spraying wood wax oil on the wood palm fiber, standing for 5-10min, adding the wood wax oil into the concrete obtained in the step S3, and stirring and mixing to obtain the concrete.
Wherein the weight ratio of the water consumption in the step S1 to the water consumption in the step S3 is (3-4): (7-8).
By adopting the technical scheme, the wood wax oil is sprayed on the wood palm fiber and stands for 5-10min, so that the wood wax oil can be completely adhered to the wood palm fiber, the wood palm fiber has better dispersibility when being put into concrete, the wood palm fiber is more uniformly distributed in the concrete, and the strength of the concrete is better enhanced.
In summary, the present application has the following beneficial effects:
1. because this application adopts water-reducing agent and anticorrosive rust inhibitor, the water-reducing agent is convenient for make the cement granule form the flocculation and congeals the structure, can strengthen the compactedness of concrete, and then the intensity of reinforcing concrete, and anticorrosive rust inhibitor can reduce the content of the sulfate ion that invades in the concrete, also can improve the corrosion resistance coefficient of concrete, and can restrain the precipitation rate of sodium hydroxide from the concrete, is convenient for strengthen the intensity of concrete.
2. Still added wooden palm and wood wax oil in this application, wooden palm is natural fiber, has fine toughness, and wood wax oil also is natural plant's extract, combines through wooden palm and wood wax oil, more can make the concrete keep fine stability in the use, has obtained the effect of reinforcing concrete intensity simultaneously.
Detailed Description
The present application will be described in further detail with reference to examples.
Raw materials
The waste slurry water is obtained by washing waste water mixtures at the ground positions of the discharge of a stirring device, a conveying device and a stirring building by water, separating and recycling sand, stones and waste water by a sand-stone separator, and performing filter pressing treatment on the residual waste water mixtures by a filter press; the cement is PW42.5 and is selected from cement of Gezhou dam group, Inc.; the stones are 5-25mm of continuous graded broken stones; the sand is river sand; the fly ash is first grade and is selected from Shanghai Tianfu mineral powder science and technology limited company; the mineral powder is S95 grade and is selected from Tangshanxin Yongzai Co., Ltd; the sodium molybdate is selected from Xiangruixin chemical technology Co., Ltd of Tianjin; the ammonium thiocyanate is selected from Yibai chemical company, Inc. in Qingzhou; tetraethylenepentamine is selected from chemical industry ltd of Jinan Weizheng; 1, 4-butynediol is selected from the group consisting of Jinxin Shunhai chemical Co., Ltd; the sodium sulfanilate is selected from Fuyang four-way chemical company; the phenol is selected from Nanjing Pasteur chemical industry; the sodium hydroxide is selected from chemical products, Inc. of Cangzhou Hongyanhay; formaldehyde is 37% of industrial grade and is selected from Jinan Shuangying chemical Co., Ltd; the wood palm fiber is selected from Longtat fiber Co., Ltd in salt city; the wood wax oil is selected from environmental protection science and technology limited of Chufeng garden of Dongguan city.
Preparation example
Preparation example 1
An anticorrosion rust inhibitor is prepared by adopting the following method:
580Kg of sodium molybdate, 300Kg of ammonium thiocyanate, 4Kg of tetraethylenepentamine and 380Kg of 1, 4-butynediol are mixed, namely the weight ratio of the sodium molybdate, the ammonium thiocyanate, the tetraethylenepentamine and the 1, 4-butynediol is 290:150:2:190, and the mixture is uniformly stirred to obtain the corrosion and rust inhibitor.
Preparation example 2
An anticorrosion rust inhibitor is prepared by adopting the following method:
mixing 600Kg of sodium molybdate, 320Kg of ammonium thiocyanate, 6Kg of tetraethylenepentamine and 400Kg of 1, 4-butynediol, wherein the weight ratio of the sodium molybdate, the ammonium thiocyanate, the tetraethylenepentamine and the 1, 4-butynediol is 300:160:3:200, and uniformly stirring to obtain the corrosion and rust inhibitor.
Preparation example 3
An anticorrosion rust inhibitor is prepared by adopting the following method:
620Kg of sodium molybdate, 340Kg of ammonium thiocyanate, 8Kg of tetraethylenepentamine and 420Kg of 1, 4-butynediol are mixed, namely the weight ratio of the sodium molybdate, the ammonium thiocyanate, the tetraethylenepentamine and the 1, 4-butynediol is 310:170:4:210, and the mixture is uniformly stirred to obtain the corrosion and rust inhibitor.
Preparation example 4
A sulfamate water reducer is prepared by the following steps:
700Kg of sodium sulfanilate, 580Kg of phenol and 830Kg of formaldehyde are mixed and stirred uniformly, then 50Kg of sodium hydroxide is added, namely the weight ratio of the sodium sulfanilate to the phenol to the formaldehyde to the sodium hydroxide is 375:290:415:25, so that the solution is alkaline, the mixture is stirred uniformly, the temperature is raised to 60 ℃, and the constant temperature reaction is carried out for 2.5 hours, thus obtaining the sulfamate water reducer.
Preparation example 5
A sulfamate water reducer is prepared by the following steps:
770Kg of sodium sulfanilate, 600Kg of phenol and 850Kg of formaldehyde are mixed and stirred uniformly, then 52Kg of sodium hydroxide is added, namely the weight ratio of the sodium sulfanilate to the phenol to the formaldehyde to the sodium hydroxide is 385:300:425:26, so that the solution is alkaline, the solution is stirred uniformly, the temperature is raised to 70 ℃, and the constant temperature reaction is carried out for 2.75 hours, thus obtaining the sulfamate water reducing agent.
Preparation example 6
A sulfamate water reducer is prepared by the following steps:
mixing 800Kg of sodium sulfanilate, 620Kg of phenol and 870Kg of formaldehyde, stirring uniformly, then adding 54Kg of sodium hydroxide, namely the weight ratio of the sodium sulfanilate to the phenol to the formaldehyde to the sodium hydroxide is 400:310:435:27, making the solution alkaline, stirring uniformly, raising the temperature to 80 ℃, and reacting at constant temperature for 3 hours to obtain the sulfamate water reducer.
Examples
TABLE 1 weight of concrete raw materials in examples (unit: Kg)
| Raw materials | Example 1 | Example 2 | Example 3 |
| Water (W) | 110 | 140 | 170 |
| Waste slurry water | 40 | 50 | 60 |
| Cement | 190 | 225 | 260 |
| Stone | 1040 | 1050 | 1060 |
| Sand | 720 | 775 | 830 |
| Fly ash | 65 | 75 | 85 |
| Mineral powder | 60 | 80 | 100 |
| Water reducing agent | 4 | 5.5 | 7 |
| Corrosion and rust inhibitor | 0.3 | 0.4 | 0.5 |
Example 1
The raw material proportion of the concrete prepared by using the waste slurry water of the mixing plant is shown in table 1.
Wherein the corrosion and rust inhibitor is obtained by adopting preparation example 1, and the water reducing agent is obtained by adopting preparation example 4.
A preparation method of concrete prepared by adopting mixing station waste slurry water comprises the following steps:
s1: adding water into waste slurry with solid content of 6%, and uniformly mixing to obtain a mixture;
s2: uniformly mixing cement, sand, stones, fly ash and mineral powder to obtain a mixture;
s3: mixing the mixture obtained in the step S1, the mixture obtained in the step S2, the corrosion and rust inhibitor and the water reducing agent, adding water, and uniformly stirring to obtain concrete;
wherein the weight ratio of the water consumption in the step S1 to the water consumption in the step S3 is 3: 8.
Examples 2 to 3
Concrete prepared by using the waste slurry of the mixing plant, concrete of examples 2-3 and example 1 are different in raw material ratio, and the raw material ratio is shown in table 1.
Example 4
A concrete prepared by using the waste slurry water of the mixing plant is different from the concrete prepared by using the waste slurry water of the example 2 in that the raw material of the waste slurry water is different, and the solid content of the waste slurry water adopted in the example 4 is 8 percent.
Example 5
A concrete prepared by using the waste slurry water of the mixing plant is different from the concrete prepared by using the waste slurry water of the example 2 in that the raw material of the waste slurry water is different, and the solid content of the waste slurry water adopted in the example 5 is 10 percent.
Example 6
Concrete prepared by using the waste slurry water of the mixing plant is different from the concrete prepared by using the waste slurry water of the mixing plant in the difference of the raw materials of the water reducing agent, and the water reducing agent in the embodiment 6 is obtained by using the concrete prepared by using the preparation example 5.
Example 7
Concrete prepared from the waste slurry of the mixing plant is different from the concrete prepared in the example 4 in the raw material of the water reducing agent, and the water reducing agent in the example 7 is obtained by adopting the preparation example 6.
Example 8
Concrete prepared by using the mixing station waste slurry is different from the concrete prepared by using the mixing station waste slurry in the embodiment 6 in the raw material difference, and the concrete prepared by using the mixing station waste slurry in the embodiment 8 is obtained by using the concrete prepared by using the preparation example 2.
Example 9
Concrete prepared by using the mixing station waste slurry water is different from the concrete prepared by using the mixing station waste slurry water in the difference of the raw materials of the corrosion and rust inhibitor and the concrete prepared by using the mixing station waste slurry water in the embodiment 9 is obtained by using the concrete prepared by using the preparation example 3.
Example 10
A concrete prepared by using the waste slurry water of the mixing plant is different from the concrete prepared in the example 1 in the preparation method.
Wherein the corrosion and rust inhibitor is obtained by adopting preparation example 2, and the water reducing agent is obtained by adopting preparation example 5.
A preparation method of concrete prepared by adopting mixing station waste slurry water comprises the following steps:
s1: adding water into waste slurry with the solid content of 8%, and uniformly mixing to obtain a mixture;
s2: uniformly mixing cement, sand, stones, fly ash and mineral powder to obtain a mixture;
s3: mixing the mixture obtained in the step S1, the mixture obtained in the step S2, the corrosion and rust inhibitor and the water reducing agent, adding water, and uniformly stirring to obtain concrete;
wherein the weight ratio of the water consumption in the step S1 to the water consumption in the step S3 is 7: 15.
Example 11
A concrete prepared by using the waste slurry water of the mixing plant is different from the concrete prepared in the example 1 in the preparation method.
Wherein the corrosion and rust inhibitor is obtained by adopting preparation example 2, and the water reducing agent is obtained by adopting preparation example 5.
A preparation method of concrete prepared by adopting mixing station waste slurry water comprises the following steps:
s1: adding water into waste slurry with the solid content of 8%, and uniformly mixing to obtain a mixture;
s2: uniformly mixing cement, sand, stones, fly ash and mineral powder to obtain a mixture;
s3: mixing the mixture obtained in the step S1, the mixture obtained in the step S2, the corrosion and rust inhibitor and the water reducing agent, adding water, and uniformly stirring to obtain concrete;
wherein the weight ratio of the water consumption in the step S1 to the water consumption in the step S3 is 4: 7.
TABLE 2 weight of concrete raw materials in examples (unit: Kg)
| Raw materials | Example 12 | Example 13 | Example 14 |
| Water (W) | 140 | 140 | 140 |
| Waste slurry water | 50 | 50 | 50 |
| Cement | 225 | 225 | 225 |
| Stone | 1050 | 1050 | 1050 |
| Sand | 775 | 775 | 775 |
| Fly ash | 75 | 75 | 75 |
| Mineral powder | 80 | 80 | 80 |
| Water reducing agent | 5.5 | 5.5 | 5.5 |
| Corrosion and rust inhibitor | 0.4 | 0.4 | 0.4 |
| Wood palm fiber | 12 | 13.5 | 15 |
| Wood wax oil | 1.2 | 1.4 | 1.6 |
Example 12
The concrete prepared by using the mixing station waste slurry is different from the concrete prepared by using the mixing station waste slurry in that wood palm fibers and wood wax oil are added, and the raw material ratio is shown in table 2.
Wherein the corrosion and rust inhibitor is obtained by adopting preparation example 2, and the water reducing agent is obtained by adopting preparation example 5.
A concrete prepared by using the waste slurry water of the mixing plant is different from the concrete prepared in the example 10 in the preparation method.
A preparation method of concrete prepared by adopting mixing station waste slurry water comprises the following steps:
s1: adding water into waste slurry with the solid content of 8%, and uniformly mixing to obtain a mixture;
s2: uniformly mixing cement, sand, stones, fly ash and mineral powder to obtain a mixture A;
s3: mixing the mixture obtained in the step S1, the mixture obtained in the step S2, the corrosion and rust inhibitor and the water reducing agent, adding water, and uniformly stirring to obtain a mixture B;
s4: spraying wood wax oil on the wood palm fiber, standing for 5min, adding the mixture obtained in the step S3, and stirring and mixing to obtain concrete;
wherein the weight ratio of the water consumption in the step S1 to the water consumption in the step S3 is 7: 15.
Examples 13 to 14
Concrete prepared from the waste slurry of the mixing plant, concrete of examples 13-14 and example 12 are different in the raw material ratio shown in table 2.
Example 15
A concrete prepared using the mixing station waste slurry water is different from that of example 12 in that the standing time in step S4 is different and that in step S4 is 7.5 min.
Example 16
A concrete prepared using the mixing station waste slurry water is different from that of example 12 in the standing time in step S4, and the standing time in step S4 is 10 min.
Comparative example
Comparative example 1
A concrete prepared using the mixing station waste slurry was different from that of example 1 in that the waste slurry was replaced with an equal amount of pebbles in the raw material of the concrete.
Comparative example 2
The difference between the concrete prepared by the mixing station waste slurry water and the concrete in the embodiment 1 is that the raw materials of the concrete are replaced by equal amount of stones.
Comparative example 3
The difference between the concrete prepared by the mixing plant waste slurry and the embodiment 1 is that the waste slurry and the corrosion and rust inhibitor are replaced by equal amount of stones in the raw materials of the concrete.
Comparative example 4
A concrete prepared by using the mixing station waste slurry water is different from the concrete prepared in the example 1 in that the raw materials of the corrosion and rust inhibitor are replaced by the same amount of sodium molybdate.
Comparative example 5
The concrete prepared by using the mixing station waste slurry water is different from the concrete prepared in the example 1 in that the ammonium thiocyanate is replaced by the same amount of sodium molybdate in the raw materials of the corrosion and rust inhibitor.
Comparative example 6
The concrete prepared by using the mixing station waste slurry is different from the concrete prepared in the example 1 in that the raw materials of the corrosion and rust inhibitor are replaced by the same amount of sodium molybdate for tetraethylenepentamine and ammonium thiocyanate.
Performance test
Samples were prepared from the concrete obtained in examples 1 to 16 and comparative examples 1 to 6, and the following property tests were carried out, and the test results are shown in Table 3.
Wherein, the compressive strength of the sample is detected according to KGB/50204-2015; carrying out bending strength detection on the sample according to KGB/T50081-2002; the samples were tested for corrosion resistance according to JC/T1011-2020.
TABLE 3 test results
| Detecting items | Compressive strength/(MPa) | Bending strength/(MPa) | Coefficient of corrosion resistance |
| Example 1 | 34.5 | 7.39 | 0.974 |
| Example 2 | 34.6 | 7.45 | 0.976 |
| Example 3 | 34.4 | 7.40 | 0.975 |
| Example 4 | 34.6 | 7.37 | 0.973 |
| Example 5 | 34.3 | 6.95 | 0.963 |
| Example 6 | 33.7 | 6.99 | 0.971 |
| Example 7 | 32.8 | 5.88 | 0.968 |
| Example 8 | 33.1 | 6.96 | 0.969 |
| Example 9 | 32.5 | 6.89 | 0.966 |
| Example 10 | 34.8 | 7.41 | 0.974 |
| Example 11 | 34.5 | 7.40 | 0.973 |
| Example 12 | 34.7 | 7.42 | 0.978 |
| Example 13 | 34.6 | 7.44 | 0.974 |
| Example 14 | 34.8 | 7.46 | 0.975 |
| Example 15 | 34.9 | 7.37 | 0.973 |
| Example 16 | 34.5 | 7.43 | 0.971 |
| Comparative example 1 | 31.6 | 6.70 | 0.739 |
| Comparative example 2 | 29.7 | 5.46 | 0.601 |
| Comparative example 3 | 30.9 | 6.65 | 0.723 |
| Comparative example 4 | 31.8 | 5.90 | 0.705 |
| Comparative example 5 | 32..1 | 6.03 | 0.724 |
| Comparative example 6 | 30.3 | 5.76 | 0.678 |
As can be seen from Table 3, the concrete of the present application has good compressive strength, bending strength and corrosion resistance coefficient through the synergistic effect of the raw materials, wherein the compressive strength is 32.5-34.9MPa, the bending strength is 5.88-7.46MPa, and the corrosion resistance coefficient is 0.963-0.978.
By comparing example 1 with comparative examples 1 to 3, it can be seen that the addition of the corrosion and rust inhibitor to the raw materials of the concrete significantly improves the compressive strength and bending strength of the concrete and improves the corrosion resistance coefficient of the concrete.
By comparing the example 1 with the comparative examples 4 to 6, it can be seen that the compression strength and the bending strength of the concrete are obviously improved and the corrosion resistance coefficient of the concrete is improved by the synergistic effect of the tetraethylenepentamine and the ammonium thiocyanate which are added into the raw materials of the corrosion-resistant and rust-resistant agent.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The concrete prepared from the waste slurry water of the mixing plant is characterized in that: the composition is prepared from the following raw materials in parts by weight: 170 parts of water 110-containing material, 40-60 parts of waste slurry, 260 parts of cement 190-containing material, 1060 parts of stone 1040-containing material, 830 parts of sand 720-containing material, 65-85 parts of fly ash, 60-100 parts of mineral powder, 4-7 parts of water reducing agent and 0.3-0.5 part of anticorrosive rust inhibitor;
wherein the solid content of the waste slurry is 6-10%.
2. The concrete prepared by using the mixing station waste slurry water according to the claim 1, characterized in that: the composition is prepared from the following raw materials in parts by weight: 120 portions of water-containing material, 45-55 portions of waste slurry water, 260 portions of cement-containing material, 1045 portions of stone-containing material, 1055 portions of sand 780-containing material, 70-80 portions of fly ash, 65-85 portions of mineral powder, 5-7 portions of water reducing agent and 0.4-0.5 portion of corrosion-resistant rust inhibitor.
3. The concrete prepared by using the mixing station waste slurry water according to the claim 1, characterized in that: the corrosion-resistant rust inhibitor is prepared from sodium molybdate, ammonium thiocyanate, tetraethylenepentamine and 1, 4-butynediol as raw materials, wherein the weight ratio of the sodium molybdate to the ammonium thiocyanate to the tetraethylenepentamine to the 1, 4-butynediol is (290-): (150-170): (2-4): (190-210).
4. The concrete prepared by using the mixing station waste slurry water according to the claim 3, characterized in that: the corrosion and rust inhibitor is prepared by the following method: and mixing sodium molybdate, ammonium thiocyanate, tetraethylenepentamine and 1, 4-butynediol, and uniformly stirring to obtain the corrosion and rust inhibitor.
5. The concrete prepared by using the mixing station waste slurry water according to the claim 1, characterized in that: the water reducing agent is a sulfamate water reducing agent.
6. The concrete prepared by using the mixing station waste slurry water according to the claim 5, characterized in that: the sulfamate water reducing agent is prepared from raw materials of sodium sulfanilate, phenol, sodium hydroxide and formaldehyde, and the weight ratio of the sodium sulfanilate, the phenol, the sodium hydroxide and the formaldehyde is (375-: (290-310): (25-27): (415-435).
7. The concrete prepared by using the mixing station waste slurry water according to the claim 6, characterized in that: the sulfamate water reducer is prepared by adopting the following method: mixing sodium sulfanilate, phenol, sodium hydroxide and formaldehyde, uniformly stirring, raising the temperature to 60-80 ℃, and reacting for 2.5-3h to obtain the sulfamate water reducing agent.
8. The concrete prepared by using the mixing station waste slurry water according to the claim 1, characterized in that: the concrete also comprises 12-15 parts of wood palm fiber and 1.2-1.6 parts of wood wax oil.
9. A method of producing concrete using a mixing station waste slurry water according to any one of claims 1 to 7, comprising the steps of:
s1: adding water into the waste slurry water, and uniformly mixing to obtain a mixture;
s2: uniformly mixing cement, sand, stones, fly ash and mineral powder to obtain a mixture;
s3: mixing the mixture obtained in the step S1, the mixture obtained in the step S2, a water reducing agent and an anticorrosive rust inhibitor, adding water, and uniformly stirring to obtain concrete;
wherein the weight ratio of the water consumption in the step S1 to the water consumption in the step S3 is (3-4): (7-8).
10. A method of producing concrete using a mixing station waste slurry as set forth in claim 8, characterized in that:
s1: adding water into the waste slurry water, and uniformly mixing to obtain a mixture A;
s2: uniformly mixing cement, sand, stones, fly ash and mineral powder to obtain a mixture;
s3: mixing the mixture obtained in the step S1 with the mixture obtained in the step S2, adding water, and uniformly stirring to obtain a mixture B;
s4: spraying wood wax oil on the wood palm fiber, standing for 5-10min, adding into the concrete obtained in the step S3, and stirring and mixing to obtain concrete;
wherein the weight ratio of the water consumption in the step S1 to the water consumption in the step S3 is (3-4): (7-8).
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