CN113582598A - Premixed mortar and preparation method thereof - Google Patents

Premixed mortar and preparation method thereof Download PDF

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Publication number
CN113582598A
CN113582598A CN202110965748.5A CN202110965748A CN113582598A CN 113582598 A CN113582598 A CN 113582598A CN 202110965748 A CN202110965748 A CN 202110965748A CN 113582598 A CN113582598 A CN 113582598A
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parts
aluminum slag
ready
agent
mixed mortar
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CN113582598B (en
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王建
苏德根
黄杰峰
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Guangxi Pingxiang Hengyu Cement Co ltd
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Guangxi Pingxiang Hengyu Cement Co ltd
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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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • 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)

Abstract

The invention discloses ready-mixed mortar and a preparation method thereof, and belongs to the technical field of building materials. The ready-mixed mortar is prepared from the following raw materials in parts by weight: 30-50 parts of cement, 30-40 parts of sea sand with fineness modulus of 1.6-2.2, 20-30 parts of aluminum slag, 0.03-0.08 part of methyl cellulose, 0.1-1 part of basalt fiber, 1.5-2.0 parts of thickening agent and 0.1-0.5 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 50-80 parts of bentonite, 10-20 parts of petrolatum, 5-15 parts of allophane, 5-10 parts of fly ash, 0.1-0.5 part of triethanolamine oleate soap, 0.1-0.5 part of stearic acid and 0.3-0.8 part of vinyl acetate. The aluminum slag is used as a raw material and added into the ready-mixed mortar, and then is mixed with raw materials such as a thickening agent for use, so that the cost is reduced; the prepared ready-mixed mortar is used for treating the aluminum slag in a synergistic manner, and slag resources can be effectively recycled.

Description

Premixed mortar and preparation method thereof
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to ready-mixed mortar and a preparation method thereof.
Background
The ready-mixed mortar is various mortar mixtures used in construction projects, and is a novel building material developed in recent years in China. The ready-mixed mortar has the following advantages: the premixed mortar can save the time for mixing materials on site and improve the construction efficiency; the premixed mortar is convenient to transport and store, and a large amount of various raw materials can be prevented from being accumulated by adopting the premixed mortar on a construction site, so that the pollution and the influence on the surrounding environment are reduced; the mortar prepared on the construction site at present has the defects of unstable quality, uneven strength grade, easy cracking, hollowing and dropping and the like, and becomes a common problem in the building industry, and the quality of the ready-mixed mortar is controllable. In the beginning of the 20 fifties, the european countries have begun to mass produce and use ready-mixed mortar, and have developed over 50 years to date. With the technical progress of the building industry and the improvement of civilized construction requirements, the ready-mixed mortar is also popularized and used more and more in China, and has great market prospect.
The aluminum slag is a slag waste, no good recovery treatment method exists at present, although the prior art is researched and used in cement, the doping amount is usually low due to the self-character defects, such as heavy metal content, strength influence after doping and the like, and the problem of waste utilization is difficult to solve.
With the continuous development of Chinese economy, the construction industry is in a rapid development state in recent years, and placer ore is used as an important construction raw material, so that the demand is huge. According to survey, in recent years, the river sandstone resources are gradually reduced, so that the planned production is gradually reduced, the contradiction between supply and demand of sand is increasingly prominent, and the price of the building sand is gradually increased. River sand is called as soft gold, but with the development of the building industry, inland river sand is exhausted, so that the sand supply cannot meet the requirement of building sand in the market. The coastal area of China is wide, the sea sand resources are rich, and if the sea sand can be used for replacing river sand for being used in the ready-mixed mortar, the problem of river sand shortage can be relieved, and the construction cost can be reduced. However, the sea sand is corrosive, so that the sea sand is difficult to popularize and use in the construction process.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides the ready-mixed mortar and the preparation method thereof, the invention utilizes the aluminum slag as the raw material to be added into the ready-mixed mortar, and then the aluminum slag is mixed with raw materials such as thickening agent and the like for use, thereby reducing the cost; the prepared ready-mixed mortar is used for treating the aluminum slag in a synergistic manner, and slag resources can be effectively recycled.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the ready-mixed mortar is prepared from the following raw materials in parts by weight: 30-50 parts of cement, 30-40 parts of sea sand with fineness modulus of 1.6-2.2, 20-30 parts of aluminum slag, 0.03-0.08 part of methyl cellulose, 0.1-1 part of basalt fiber, 1.5-2.0 parts of thickening agent and 0.1-0.5 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 50-80 parts of bentonite, 10-20 parts of petrolatum, 5-15 parts of allophane, 5-10 parts of fly ash, 0.1-0.5 part of triethanolamine oleate soap, 0.1-0.5 part of stearic acid and 0.3-0.8 part of vinyl acetate.
Furthermore, in the aluminum slag, the content of calcium oxide is not less than 30%, the content of aluminum trioxide is not less than 28%, and the content of silicon dioxide is not less than 10%.
Further, the aluminum slag is used after being treated as follows: crushing the aluminum slag to 0.25mm square-hole sieve residue of not more than 10%, spraying a treating agent into the crushed aluminum slag while stirring for treatment, controlling the temperature in the treatment process to be 40-50 ℃, the stirring speed to be 50-60r/min, and the treatment time to be 30-40min, and controlling the water content of the treated aluminum slag to be less than 1%; the treating agent is FeCl2Sodium silicate, K2SiO3The treatment agent is prepared by mixing the treatment agent and seawater, and the content of each component in each kg of treatment agent is as follows: FeCl23-5g, 200g of sodium silicate and 300g of K2SiO33-4g, and the balance being seawater; the usage amount of the treating agent is that 180-200 kg of treating agent is sprayed in each ton of aluminum slag.
Further, the preparation method of the thickening agent comprises the following steps: drying bentonite, halloysite, allophane and fly ash until the moisture content is less than 1%; adding triethanolamine oleate soap and stearic acid into bentonite, mixing, adding into a mill, and grinding until the residue on a 0.25mm square-hole sieve is not more than 10% to obtain a mixture I; adding the stone grease and the allophane into the mixture I, controlling the temperature at 40-45 ℃, continuing to carry out mixed grinding in a grinding machine, and grinding the materials until the residue of a square-hole sieve with the size of 0.25mm is not more than 10% to obtain a mixture II; adding vinyl acetate into the fly ash while stirring, and uniformly mixing to obtain a mixture III; adding the mixture III into the mixture II, grinding in a mill at 30-40 deg.C for 10-20min, standing for 5-10min, and grinding for 5-10min to obtain thickening agent.
The invention also provides a preparation method of the ready-mixed mortar, which comprises the following steps: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, adding the raw materials into a mixer, stirring and mixing at the stirring speed of 300-400r/min for 10-20min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotation speed of 200-300r/min for 20-30min to prepare the ready-mixed mortar.
Furthermore, the fineness of the cement, the aluminum slag and the basalt fiber is controlled to be not more than 10 percent of the screen residue of a 0.25mm square-hole sieve, and the moisture content is not more than 1 percent.
The invention has the following beneficial effects:
the aluminum slag is treated and added into the ready-mixed mortar as a raw material, and then is mixed with the raw materials such as a thickening agent for use, so that the aluminum slag can be recycled, the production cost is reduced, and the strength of the ready-mixed mortar can be improved.
The invention is realized by FeCl2Sodium silicate, K2SiO3Treating the aluminum slag with a treating agent prepared by mixing with seawater, wherein FeCl is used for treating the aluminum slag in the treatment process2Reducing heavy metal and simultaneously passing through sodium silicate and K2SiO3The aluminum slag is solidified, seawater plays a role in assisting and promoting, and heavy metals in the aluminum slag can be effectively solidified, so that the heavy metals are stable and cannot migrate in the using process of a ready-mixed mortar finished product.
According to the invention, although the sea sand is corrosive, the sea sand is mixed with the raw materials such as the aluminum slag, the thickening agent and the like to prepare the ready-mixed mortar, and tests show that the ready-mixed mortar added with the sea sand and the ready-mixed mortar added with the river sand have no great difference in service performance, so that the sea sand can be used in the ready-mixed mortar instead of the river sand through the formula and the preparation method.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1
The ready-mixed mortar is prepared from the following raw materials in parts by weight: 5 parts of cement, 33 parts of sea sand with fineness modulus of 1.6-2.2, 22 parts of aluminum slag, 0.04 part of methyl cellulose, 0.3 part of basalt fiber, 1.6 parts of thickening agent and 0.2 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 55 parts of bentonite, 12 parts of petrolatum, 8 parts of allophane, 6 parts of fly ash, 0.2 part of triethanolamine oleate soap, 0.2 part of stearic acid and 0.4 part of vinyl acetate.
In the aluminum slag, the content of calcium oxide is 31.1%, the content of aluminum trioxide is 29.3%, and the content of silicon dioxide is 10.4%. The aluminum slag is used after being treated as follows: crushing the aluminum slag to 0.25mm square-hole sieve residue of not more than 10%, spraying a treating agent into the crushed aluminum slag while stirring for treatment, controlling the temperature in the treatment process at 45 ℃, the stirring speed at 55r/min, and the treatment time at 35min, and controlling the water content of the treated aluminum slag to be less than 1%; the treating agent is FeCl2Sodium silicate, K2SiO3The treatment agent is prepared by mixing the treatment agent and seawater, and the content of each component in each kg of treatment agent is as follows: FeCl24g of sodium silicate, 250g of sodium silicate and K2SiO33.5g, and the balance being seawater; the usage amount of the treating agent is 190 kilograms of the treating agent sprayed in each ton of aluminum slag.
The leaching test of the aluminum slag treated by the embodiment is carried out according to HJT299-2007 solid waste leaching toxicity leaching method-sulfuric acid-nitric acid method, and the results are as follows:
before treatment: the Ni content is 3.92mg/L, and the Cr content is 34.10 mg/L;
after treatment: ni content 0.05mg/L, Cr content 0.73 mg/L.
The preparation method of the thickening agent comprises the following steps: drying bentonite, halloysite, allophane and fly ash until the moisture content is less than 1%; adding triethanolamine oleate soap and stearic acid into bentonite, mixing, adding into a mill, and grinding until the residue on a 0.25mm square-hole sieve is not more than 10% to obtain a mixture I; adding the stone grease and the allophane into the mixture I, controlling the temperature at 40 ℃, continuing to carry out mixed grinding in a grinding machine, and grinding the materials until the residue of a square-hole sieve with the size of 0.25mm is not more than 10% to obtain a mixture II; adding vinyl acetate into the fly ash while stirring, and uniformly mixing to obtain a mixture III; adding mixture III into mixture II, grinding in a mill at 35 deg.C for 15min, standing for 8min, and grinding for 8min to obtain thickening agent.
The preparation method of the ready-mixed mortar comprises the following steps: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, controlling the fineness of the cement, the aluminum slag and the basalt fiber to be not more than 10% of the residue of a square-hole sieve with the size of 0.25mm, adding the cement, the aluminum slag and the basalt fiber into a mixer, stirring and mixing at the stirring speed of 350r/min for 15min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotating speed of 250r/min for 25min to prepare the ready-mixed mortar.
The ready-mixed mortar prepared in the example 1 was mixed with mortar and poured into a round steel pipe, and set as a test group; meanwhile, river sand is used for replacing sea sand, the method of the embodiment 1 is used for preparing the ready-mixed mortar, the ready-mixed mortar is mixed and poured into a round steel pipe with the same model as that of the test group, and the control group is set; carrying out axial compression test on the test pieces of the test group and the control group, standing for 240 days, and then carrying out axial compression test again, wherein the axial compression test refers to GB 50936-2014; final axle load capacity reduction rate: the test group is 5.3 percent, and the control group is 5.0 percent. Therefore, the invention uses sea sand instead of river sand to be used in the ready-mixed mortar, has little difference in corrosivity, and is feasible by using sea water instead of river sand.
Example 2
The ready-mixed mortar is prepared from the following raw materials in parts by weight: 45 parts of cement, 38 parts of sea sand with the fineness modulus of 1.6-2.2, 27 parts of aluminum slag, 0.06 part of methyl cellulose, 0.8 part of basalt fiber, 1.9 parts of thickening agent and 0.4 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 70 parts of bentonite, 18 parts of petrolatum, 13 parts of allophane, 8 parts of fly ash, 0.4 part of triethanolamine oleate soap, 0.4 part of stearic acid and 0.6 part of vinyl acetate.
In the aluminum slag, the content of calcium oxide is 31.1%, the content of aluminum trioxide is 29.3%, and the content of silicon dioxide is 10.4%. The aluminum slag is used after being treated as follows: crushing the aluminum slag to 0.25mm square-hole sieve residue of not more than 10%, spraying a treating agent into the crushed aluminum slag while stirring for treatment, controlling the temperature in the treatment process at 40 ℃, the stirring speed at 60r/min, and the treatment time at 30min, and controlling the water content of the aluminum slag obtained by treatment to be less than 1%; the treating agent is FeCl2Sodium silicate, K2SiO3The treatment agent is prepared by mixing the treatment agent and seawater, and the content of each component in each kg of treatment agent is as follows: FeCl23.5g, sodium silicate 220g and K2SiO33.2g, and the balance being seawater; the usage amount of the treating agent is 180 kilograms of the treating agent sprayed in each ton of aluminum slag.
The preparation method of the thickening agent comprises the following steps: drying bentonite, halloysite, allophane and fly ash until the moisture content is less than 1%; adding triethanolamine oleate soap and stearic acid into bentonite, mixing, adding into a mill, and grinding until the residue on a 0.25mm square-hole sieve is not more than 10% to obtain a mixture I; adding the stone grease and the allophane into the mixture I, controlling the temperature at 45 ℃, continuing to carry out mixed grinding in a grinding machine, and grinding the materials until the residue of a square-hole sieve with the size of 0.25mm is not more than 10% to obtain a mixture II; adding vinyl acetate into the fly ash while stirring, and uniformly mixing to obtain a mixture III; adding mixture III into mixture II, grinding in mill at 40 deg.C for 10min, standing for 5min, and grinding for 10min to obtain thickening agent.
The preparation method of the ready-mixed mortar comprises the following steps: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, controlling the fineness of the cement, the aluminum slag and the basalt fiber to be not more than 10% of the residue of a square-hole sieve with the size of 0.25mm, adding the cement, the aluminum slag and the basalt fiber into a mixer, stirring and mixing at the stirring speed of 300r/min for 20min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotating speed of 200r/min for 30min to prepare the ready-mixed mortar.
Example 3
The ready-mixed mortar is prepared from the following raw materials in parts by weight: 40 parts of cement, 35 parts of sea sand with the fineness modulus of 1.6-2.2, 25 parts of aluminum slag, 0.05 part of methyl cellulose, 0.5 part of basalt fiber, 1.7 parts of thickening agent and 0.3 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 60 parts of bentonite, 15 parts of petrolatum, 10 parts of allophane, 7 parts of fly ash, 0.2 part of triethanolamine oleate soap, 0.3 part of stearic acid and 0.5 part of vinyl acetate.
In the aluminum slag, the content of calcium oxide is 31.9%, the content of aluminum trioxide is 29.0%, and the content of silicon dioxide is 10.6%. The aluminum slag is used after being treated as follows: pulverizing aluminum slag to 0.25mm square mesh sieve residue not more than 10%, and spraying treating agent into the pulverized aluminum slag while stirring to treatControlling the temperature of the treatment process at 50 ℃, stirring at a speed of 50r/min, treating for 40min, and controlling the moisture of the aluminum slag obtained by treatment to be less than 1 percent; the treating agent is FeCl2Sodium silicate, K2SiO3The treatment agent is prepared by mixing the treatment agent and seawater, and the content of each component in each kg of treatment agent is as follows: FeCl24.5g, 280g of sodium silicate and K2SiO33.7g, and the balance being seawater; the usage amount of the treating agent is 200 kilograms of the treating agent sprayed in each ton of aluminum slag.
The preparation method of the thickening agent comprises the following steps: drying bentonite, halloysite, allophane and fly ash until the moisture content is less than 1%; adding triethanolamine oleate soap and stearic acid into bentonite, mixing, adding into a mill, and grinding until the residue on a 0.25mm square-hole sieve is not more than 10% to obtain a mixture I; adding the stone grease and the allophane into the mixture I, controlling the temperature at 40-45 ℃, continuing to carry out mixed grinding in a grinding machine, and grinding the materials until the residue of a square-hole sieve with the size of 0.25mm is not more than 10% to obtain a mixture II; adding vinyl acetate into the fly ash while stirring, and uniformly mixing to obtain a mixture III; adding mixture III into mixture II, grinding in mill at 30-40 deg.C for 20min, standing for 10min, and grinding for 5min to obtain thickening agent.
The preparation method of the ready-mixed mortar comprises the following steps: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, controlling the fineness of the cement, the aluminum slag and the basalt fiber to be not more than 10% of the residue of a square-hole sieve with the size of 0.25mm, adding the cement, the aluminum slag and the basalt fiber into a mixer, stirring and mixing at the stirring speed of 400r/min for 10min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotating speed of 300r/min for 30min to prepare the ready-mixed mortar.
Example 4
The ready-mixed mortar is prepared from the following raw materials in parts by weight: 30 parts of cement, 30 parts of sea sand with the fineness modulus of 1.6-2.2, 20 parts of aluminum slag, 0.03 part of methyl cellulose, 0.1 part of basalt fiber, 1.5 parts of thickening agent and 0.1 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 50 parts of bentonite, 10 parts of petrolatum, 5 parts of allophane, 5 parts of fly ash, 0.1 part of triethanolamine oleate soap, 0.1 part of stearic acid and 0.3 part of vinyl acetate.
In the aluminum slag, the content of calcium oxide is 31.9%, the content of aluminum trioxide is 29.0%, and the content of silicon dioxide is 10.6%. The aluminum slag is used after being treated as follows: crushing the aluminum slag to 0.25mm square-hole sieve residue of not more than 10%, spraying a treating agent into the crushed aluminum slag while stirring for treatment, controlling the temperature in the treatment process at 40 ℃, the stirring speed at 60r/min, and the treatment time at 30min, and controlling the water content of the aluminum slag obtained by treatment to be less than 1%; the treating agent is FeCl2Sodium silicate, K2SiO3The treatment agent is prepared by mixing the treatment agent and seawater, and the content of each component in each kg of treatment agent is as follows: FeCl25g, 300g of sodium silicate and K2SiO33g, and the balance being seawater; the usage amount of the treating agent is 180 kilograms of the treating agent sprayed in each ton of aluminum slag.
The preparation method of the thickening agent comprises the following steps: drying bentonite, halloysite, allophane and fly ash until the moisture content is less than 1%; adding triethanolamine oleate soap and stearic acid into bentonite, mixing, adding into a mill, and grinding until the residue on a 0.25mm square-hole sieve is not more than 10% to obtain a mixture I; adding the stone grease and the allophane into the mixture I, controlling the temperature at 40 ℃, continuing to carry out mixed grinding in a grinding machine, and grinding the materials until the residue of a square-hole sieve with the size of 0.25mm is not more than 10% to obtain a mixture II; adding vinyl acetate into the fly ash while stirring, and uniformly mixing to obtain a mixture III; adding mixture III into mixture II, grinding in mill at 30 deg.C for 20min, standing for 5min, and grinding for 10min to obtain thickening agent.
The preparation method of the ready-mixed mortar comprises the following steps: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, controlling the fineness of the cement, the aluminum slag and the basalt fiber to be not more than 10% of the residue of a square-hole sieve with the size of 0.25mm, adding the cement, the aluminum slag and the basalt fiber into a mixer, stirring and mixing at the stirring speed of 300r/min for 20min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotating speed of 300r/min for 20min to prepare the ready-mixed mortar.
Example 5
The ready-mixed mortar is prepared from the following raw materials in parts by weight: 50 parts of cement, 40 parts of sea sand with fineness modulus of 1.6-2.2, 30 parts of aluminum slag, 0.08 part of methyl cellulose, 1 part of basalt fiber, 2.0 parts of thickening agent and 0.5 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 80 parts of bentonite, 20 parts of petrolatum, 15 parts of allophane, 10 parts of fly ash, 0.5 part of triethanolamine oleate soap, 0.5 part of stearic acid and 0.8 part of vinyl acetate.
In the aluminum slag, the content of calcium oxide is 32.01%, the content of aluminum trioxide is 29.3%, and the content of silicon dioxide is 10.8%. The aluminum slag is used after being treated as follows: crushing the aluminum slag to 0.25mm square-hole sieve residue of not more than 10%, spraying a treating agent into the crushed aluminum slag while stirring for treatment, controlling the temperature in the treatment process at 50 ℃, the stirring speed at 50r/min, and the treatment time at 40min, and controlling the water content of the aluminum slag obtained by treatment to be less than 1%; the treating agent is FeCl2Sodium silicate, K2SiO3The treatment agent is prepared by mixing the treatment agent and seawater, and the content of each component in each kg of treatment agent is as follows: FeCl23g, sodium silicate 200g and K2SiO34g, and the balance being seawater; the usage amount of the treating agent is 200 kilograms of the treating agent sprayed in each ton of aluminum slag.
The preparation method of the thickening agent comprises the following steps: drying bentonite, halloysite, allophane and fly ash until the moisture content is less than 1%; adding triethanolamine oleate soap and stearic acid into bentonite, mixing, adding into a mill, and grinding until the residue on a 0.25mm square-hole sieve is not more than 10% to obtain a mixture I; adding the stone grease and the allophane into the mixture I, controlling the temperature at 45 ℃, continuing to carry out mixed grinding in a grinding machine, and grinding the materials until the residue of a square-hole sieve with the size of 0.25mm is not more than 10% to obtain a mixture II; adding vinyl acetate into the fly ash while stirring, and uniformly mixing to obtain a mixture III; adding mixture III into mixture II, grinding in mill at 40 deg.C for 10min, standing for 10min, and grinding for 10min to obtain thickening agent.
The preparation method of the ready-mixed mortar comprises the following steps: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, controlling the fineness of the cement, the aluminum slag and the basalt fiber to be not more than 10% of the residue of a square-hole sieve with the size of 0.25mm, adding the cement, the aluminum slag and the basalt fiber into a mixer, stirring and mixing at the stirring speed of 400r/min for 10min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotating speed of 200r/min for 30min to prepare the ready-mixed mortar.
Example 6
The ready-mixed mortar is prepared from the following raw materials in parts by weight: 5 parts of cement, 33 parts of sea sand with fineness modulus of 1.6-2.2, 22 parts of aluminum slag, 0.04 part of methyl cellulose, 0.3 part of basalt fiber, 1.6 parts of thickening agent and 0.2 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 55 parts of bentonite, 12 parts of petrolatum, 8 parts of allophane, 6 parts of fly ash, 0.2 part of triethanolamine oleate soap, 0.2 part of stearic acid and 0.4 part of vinyl acetate.
In the aluminum slag, the content of calcium oxide is 31.1%, the content of aluminum trioxide is 29.3%, and the content of silicon dioxide is 10.4%.
The preparation method of the thickening agent comprises the following steps: drying bentonite, halloysite, allophane and fly ash until the moisture content is less than 1%; adding triethanolamine oleate soap and stearic acid into bentonite, mixing, adding into a mill, and grinding until the residue on a 0.25mm square-hole sieve is not more than 10% to obtain a mixture I; adding the stone grease and the allophane into the mixture I, controlling the temperature at 40 ℃, continuing to carry out mixed grinding in a grinding machine, and grinding the materials until the residue of a square-hole sieve with the size of 0.25mm is not more than 10% to obtain a mixture II; adding vinyl acetate into the fly ash while stirring, and uniformly mixing to obtain a mixture III; adding mixture III into mixture II, grinding in a mill at 35 deg.C for 15min, standing for 8min, and grinding for 8min to obtain thickening agent.
The preparation method of the ready-mixed mortar comprises the following steps: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, controlling the fineness of the cement, the aluminum slag and the basalt fiber to be not more than 10% of the residue of a square-hole sieve with the size of 0.25mm, adding the cement, the aluminum slag and the basalt fiber into a mixer, stirring and mixing at the stirring speed of 350r/min for 15min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotating speed of 250r/min for 25min to prepare the ready-mixed mortar.
Example 7
The ready-mixed mortar is prepared from the following raw materials in parts by weight: 5 parts of cement, 33 parts of sea sand with fineness modulus of 1.6-2.2, 22 parts of aluminum slag, 0.04 part of methyl cellulose, 0.3 part of basalt fiber, 1.6 parts of thickening agent and 0.2 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 55 parts of bentonite, 12 parts of petrolatum, 8 parts of allophane, 6 parts of fly ash, 0.2 part of triethanolamine oleate soap, 0.2 part of stearic acid and 0.4 part of vinyl acetate.
In the aluminum slag, the content of calcium oxide is 31.1%, the content of aluminum trioxide is 29.3%, and the content of silicon dioxide is 10.4%. The aluminum slag is used after being treated as follows: crushing the aluminum slag to 0.25mm square-hole sieve residue of not more than 10%, spraying a treating agent into the crushed aluminum slag while stirring for treatment, controlling the temperature in the treatment process at 45 ℃, the stirring speed at 55r/min, and the treatment time at 35min, and controlling the water content of the treated aluminum slag to be less than 1%; the treating agent is FeCl2Sodium silicate, K2SiO3The treatment agent is prepared by mixing the treatment agent and seawater, and the content of each component in each kg of treatment agent is as follows: FeCl24g of sodium silicate, 250g of sodium silicate and K2SiO33.5g, and the balance being seawater; the usage amount of the treating agent is 190 kilograms of the treating agent sprayed in each ton of aluminum slag.
The preparation method of the thickening agent comprises the following steps: drying bentonite, rock fat, allophane and fly ash until the water content is less than 1%, grinding until the residue on a 0.25mm square-hole sieve is not more than 10%, mixing the raw material components, grinding in a grinding machine at 35 ℃ for 15min, standing for 8min, and grinding for 8min to obtain the thickening agent.
The preparation method of the ready-mixed mortar comprises the following steps: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, controlling the fineness of the cement, the aluminum slag and the basalt fiber to be not more than 10% of the residue of a square-hole sieve with the size of 0.25mm, adding the cement, the aluminum slag and the basalt fiber into a mixer, stirring and mixing at the stirring speed of 350r/min for 15min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotating speed of 250r/min for 25min to prepare the ready-mixed mortar.
Example 8
The ready-mixed mortar is prepared from the following raw materials in parts by weight: 5 parts of cement, 33 parts of sea sand with fineness modulus of 1.6-2.2, 22 parts of aluminum slag, 0.04 part of methyl cellulose, 0.3 part of basalt fiber, 1.6 parts of thickening agent and 0.2 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 55 parts of bentonite, 12 parts of kaolin, 8 parts of montmorillonite, 6 parts of fly ash, 0.2 part of triethanolamine oleate soap, 0.2 part of stearic acid and 0.4 part of vinyl acetate.
In the aluminum slag, the content of calcium oxide is 31.1%, the content of aluminum trioxide is 29.3%, and the content of silicon dioxide is 10.4%. The aluminum slag is used after being treated as follows: crushing the aluminum slag to 0.25mm square-hole sieve residue of not more than 10%, spraying a treating agent into the crushed aluminum slag while stirring for treatment, controlling the temperature in the treatment process at 45 ℃, the stirring speed at 55r/min, and the treatment time at 35min, and controlling the water content of the treated aluminum slag to be less than 1%; the treating agent is FeCl2Sodium silicate, K2SiO3The treatment agent is prepared by mixing the treatment agent and seawater, and the content of each component in each kg of treatment agent is as follows: FeCl24g of sodium silicate, 250g of sodium silicate and K2SiO33.5g, and the balance being seawater; the usage amount of the treating agent is 190 kilograms of the treating agent sprayed in each ton of aluminum slag.
The preparation method of the thickening agent comprises the following steps: drying bentonite, kaolin, montmorillonite and fly ash until the water content is less than 1%, grinding until the residue of a 0.25mm square-hole sieve is not more than 10%, mixing the raw material components, grinding in a grinding machine at 35 ℃ for 15min, standing for 8min, and grinding for 8min to obtain the thickening agent.
The preparation method of the ready-mixed mortar comprises the following steps: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, controlling the fineness of the cement, the aluminum slag and the basalt fiber to be not more than 10% of the residue of a square-hole sieve with the size of 0.25mm, adding the cement, the aluminum slag and the basalt fiber into a mixer, stirring and mixing at the stirring speed of 350r/min for 15min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotating speed of 250r/min for 25min to prepare the ready-mixed mortar.
Example 9
Preparing ready-mixed mortar by using the formula and the preparation method in the embodiment 1, and selecting aluminum slag with different calcium oxide contents, aluminum trioxide contents and silicon dioxide contents; in the selected aluminum slag, the content of calcium oxide is 28.1%, the content of aluminum trioxide is 26.3%, and the content of silicon dioxide is 9.4%.
Example 10
The premixed mortar was prepared by using the formulation and preparation method of example 1, and in the treatment of aluminum slag, the treating agent used was FeCl2Sodium silicate, K2SiO3The treating agent is prepared by mixing fresh water, and the content of each component in each kg of treating agent is as follows: FeCl24g of sodium silicate, 250g of sodium silicate and K2SiO33.5g, and the balance being tap water.
The leaching test of the aluminum slag treated by the embodiment is carried out according to HJT299-2007 solid waste leaching toxicity leaching method-sulfuric acid-nitric acid method, and the results are as follows:
before treatment: the Ni content is 3.92mg/L, and the Cr content is 34.10 mg/L;
after treatment: ni content 0.97mg/L, Cr content 2.35 mg/L.
And detecting various performance indexes of the premixed mortar standard test block of each embodiment according to JGJ/T70-2009, wherein the performance indexes are shown in Table 1.
TABLE 1
Figure BDA0003223804060000101
As can be seen from the data in Table 1, each performance index of the ready-mixed mortar in example 1 achieves a good technical effect; the aluminum slag of the embodiment 6 is used after being added without being processed, and finally, various index effects of the ready-mixed mortar are reduced; example 7 changes the preparation method of the thickening agent, and example 8 changes the component formula of the thickening agent, and has certain influence on various performances of the ready-mixed mortar finished product; example 9 the selection of the aluminum slag with different contents also affects the flexural strength and compressive strength of the ready-mixed mortar; as can be seen from the data of example 10, the seawater in the treating agent formulation has a certain effect on the treatment effect of the aluminum dross.
Although the present invention has been described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. The ready-mixed mortar is characterized by being prepared from the following raw materials in parts by weight: 30-50 parts of cement, 30-40 parts of sea sand with fineness modulus of 1.6-2.2, 20-30 parts of aluminum slag, 0.03-0.08 part of methyl cellulose, 0.1-1 part of basalt fiber, 1.5-2.0 parts of thickening agent and 0.1-0.5 part of polycarboxylic acid water reducing agent; the thickening agent is prepared from the following raw materials in parts by weight: 50-80 parts of bentonite, 10-20 parts of petrolatum, 5-15 parts of allophane, 5-10 parts of fly ash, 0.1-0.5 part of triethanolamine oleate soap, 0.1-0.5 part of stearic acid and 0.3-0.8 part of vinyl acetate.
2. The ready-mixed mortar of claim 1, wherein: in the aluminum slag, the content of calcium oxide is not less than 30%, the content of aluminum trioxide is not less than 28%, and the content of silicon dioxide is not less than 10%.
3. The ready-mixed mortar according to claim 1, wherein the aluminum slag is used after being treated as follows: crushing the aluminum slag to 0.25mm square-hole sieve residue of not more than 10%, spraying a treating agent into the crushed aluminum slag while stirring for treatment, controlling the temperature in the treatment process to be 40-50 ℃, the stirring speed to be 50-60r/min, and the treatment time to be 30-40min, and controlling the water content of the treated aluminum slag to be less than 1%; the treating agent is FeCl2Sodium silicate, K2SiO3The treatment agent is prepared by mixing the treatment agent and seawater, and the content of each component in each kg of treatment agent is as follows: FeCl23-5g, 200g of sodium silicate and 300g of K2SiO33-4g, and the balance being seawater; the usage amount of the treating agent is that 180-200 kg of treating agent is sprayed in each ton of aluminum slag.
4. The ready-mixed mortar according to claim 1, wherein the preparation method of the thickening agent comprises the following steps: drying bentonite, halloysite, allophane and fly ash until the moisture content is less than 1%; weighing the raw materials according to the weight part ratio, adding triethanolamine oleate soap and stearic acid into bentonite, mixing, adding into a mill, and grinding until the residue on a 0.25mm square-hole sieve is not more than 10% to obtain a mixture I; adding the stone grease and the allophane into the mixture I, controlling the temperature at 40-45 ℃, continuing to carry out mixed grinding in a grinding machine, and grinding the materials until the residue of a square-hole sieve with the size of 0.25mm is not more than 10% to obtain a mixture II; adding vinyl acetate into the fly ash while stirring, and uniformly mixing to obtain a mixture III; adding the mixture III into the mixture II, grinding in a mill at 30-40 deg.C for 10-20min, standing for 5-10min, and grinding for 5-10min to obtain thickening agent.
5. The method for preparing a ready-mixed mortar according to any one of claims 1 to 4, comprising the steps of: weighing cement, sea sand, aluminum slag and basalt fiber according to the formula proportion of the raw materials, adding the raw materials into a mixer, stirring and mixing at the stirring speed of 300-400r/min for 10-20min, adding methyl cellulose, a thickening agent and a polycarboxylic acid water reducing agent, and mixing at the rotation speed of 200-300r/min for 20-30min to prepare the ready-mixed mortar.
6. The method for producing a ready-mixed mortar according to claim 5, comprising: the fineness of the cement, the aluminum slag and the basalt fiber is controlled to be not more than 10 percent of the screen residue of a 0.25mm square-hole screen.
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