CN108585725B - Process for preparing curb stone by processing concrete containing asbestos wool - Google Patents
Process for preparing curb stone by processing concrete containing asbestos wool Download PDFInfo
- Publication number
- CN108585725B CN108585725B CN201810353819.4A CN201810353819A CN108585725B CN 108585725 B CN108585725 B CN 108585725B CN 201810353819 A CN201810353819 A CN 201810353819A CN 108585725 B CN108585725 B CN 108585725B
- Authority
- CN
- China
- Prior art keywords
- petroleum coke
- powder
- micro powder
- asbestos wool
- preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted materials
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1066—Oxides, Hydroxides
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2652—Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/04—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polycarbonamides, polyesteramides or polyimides
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/221—Kerbs or like edging members, e.g. flush kerbs, shoulder retaining means ; Joint members, connecting or load-transfer means specially for kerbs
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
-
- 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
Abstract
The invention discloses a process for preparing a curbstone by processing concrete containing asbestos wool, which relates to the technical field of curbstones and comprises the following steps: (1) the method comprises the following steps of (1) ultrafine grinding of petroleum coke, (2) enhanced coating of the petroleum coke, (3) preparation of a main material, (4) preparation of an auxiliary material, (5) low-temperature treatment of the auxiliary material, and (6) processing of the curbstone. The invention utilizes the superfine magnesium oxide to coat the petroleum coke to improve the thermal stability of the petroleum coke, and simultaneously fully utilizes the specific hardness, wear resistance and strength of the petroleum coke, thereby improving the compression strength and tensile strength of the prepared curb stone and realizing the new application of the petroleum coke in the field of concrete.
Description
The technical field is as follows:
the invention relates to the technical field of curb stones, in particular to a process for preparing the curb stones by processing concrete containing asbestos wool.
Background art:
the kerbstone refers to boundary stones used at the edge of a road surface, and is also called road kerbstone or kerbstone and curbstone. The curbstone is a boundary line for distinguishing a traffic lane, a sidewalk, a green land, an isolation strip and other parts of a road on the road surface, and plays roles in ensuring traffic safety of pedestrians and vehicles and ensuring the edge of the road surface to be neat.
Currently, curbstones are usually prefabricated from common concrete or cut from natural stone materials, such as granite and marble. The curbstone formed by cutting natural stone is difficult to obtain and construct, has limited resources and damages natural resources, so the curbstone is not widely used in recent years. However, although the price of the road curbstone made of common concrete in the market is lower than that of natural stones, the road curbstone is mainly made of sand, stone and cement, the compression strength of the road curbstone manufactured by processing is low, and certain potential safety hazards exist in gaps after the road curbstone is broken to pedestrians and vehicles.
The invention content is as follows:
the technical problem to be solved by the invention is to provide the process for preparing the curb stone by processing the concrete containing the asbestos wool, which is simple and easy to operate, has cheap and easily-obtained raw materials, and the compression strength and the tensile strength of the prepared curb stone can greatly meet the use requirements.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a process for preparing the curb stone by using the concrete containing the asbestos wool comprises the following steps:
(1) ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) reinforcing and coating petroleum coke: heating the petroleum coke micro powder at a heating rate of 3-5 ℃/min until the surface is completely softened, then adding equivalent superfine magnesium oxide under heat preservation and stirring, fully mixing, naturally cooling to room temperature, and processing the obtained solid into micro powder with the fineness of less than 300 meshes by using a micro powder mill, thus obtaining the magnesium oxide coated petroleum coke micro powder;
(3) preparation of main materials: is prepared by mixing stone powder, medium sand, blast furnace slag powder and desulfurized gypsum powder;
(4) preparing auxiliary materials: is prepared by mixing portland cement, magnesium oxide coated petroleum coke micro powder, asbestos wool and polyaspartic acid;
(5) and (3) low-temperature treatment of auxiliary materials: adding water into the auxiliary materials, stirring uniformly, and standing for 12-24h at 5-10 ℃;
(6) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
the asbestos wool is subjected to modification treatment, and the modification method comprises the following steps: the method comprises the steps of firstly drying asbestos wool in an oven with the temperature of 110-.
The mass ratio of the asbestos wool, the C5 hydrogenated petroleum resin and the turpentine is 1-5:0.05-0.5: 0.05-0.5.
The mass ratio of the stone powder, the medium sand, the blast furnace slag powder, the desulfurized gypsum powder, the silicate cement, the magnesium oxide coated petroleum coke micro powder, the asbestos wool, the polyaspartic acid and the water is 20-30:10-15:5-10:1-5:5-10:1-5: 0.25-0.5: 15-25.
The auxiliary material also comprises a coagulant aid, and the mass ratio of the coagulant aid to the portland cement is 0.25-1: 5-10.
The coagulant aid is prepared from soil-grade polyglutamic acid and N-hydroxymethyl acrylamide, and the preparation method comprises the following steps: mixing soil-grade polyglutamic acid and N-hydroxymethyl acrylamide, adding water to dissolve completely, adding a potassium persulfate saturated aqueous solution, dropwise adding a dilute sulfuric acid solution to adjust the pH value of the system to 4-5, heating to a reflux state, keeping the temperature, stirring and reacting, sending the obtained mixture into a spray dryer after the reaction is finished, drying the obtained particles, and preparing the particles into micro powder by using an ultrafine pulverizer to obtain the coagulant aid.
The mass ratio of the soil-grade polyglutamic acid to the N-hydroxymethyl acrylamide to the potassium persulfate saturated aqueous solution is 5-10:5-10: 0.5-1.
The auxiliary material also comprises a composite rare earth oxide, and the mass ratio of the composite rare earth oxide to the portland cement is 0.05-0.25: 5-10.
The composite rare earth oxide is prepared from cerium sulfate, yttrium chloride, neodymium carbonate and 4A molecular sieve raw powder, and the preparation method comprises the following steps: mixing cerium sulfate, yttrium chloride and neodymium carbonate, uniformly dispersing the mixture in water, ball-milling the mixture by a ball mill until the fineness of the mixture is less than 50 mu m, adding 4A molecular sieve raw powder, uniformly stirring the mixture, then sending the mixture into a freeze dryer, drying the obtained solid, preparing the solid into micropowder by an ultrafine pulverizer, heating the micropowder to 300 ℃ at the heating rate of 5 ℃/min for 3 hours in the nitrogen atmosphere, and continuing heating the micropowder to 600 ℃ at the heating rate of 5 ℃/min for 8 hours to obtain the composite rare earth oxide.
The mass ratio of the cerium sulfate to the yttrium chloride to the neodymium carbonate to the water to the 4A molecular sieve raw powder is 5:3:2:20-30: 1-3.
The invention has the beneficial effects that:
(1) according to the invention, the petroleum coke is coated with the ultrafine magnesium oxide to improve the thermal stability of the petroleum coke, and meanwhile, the specific hardness, wear resistance and strength of the petroleum coke are fully utilized, so that the compression strength and tensile strength of the prepared curb stone are improved, and the novel application of the petroleum coke in the field of concrete is realized;
(2) according to the invention, C5 hydrogenated petroleum resin and turpentine are used as modifiers, and the blending compatibility between the asbestos wool and the main material is improved through modification treatment of the asbestos wool, so that the drying speed of concrete is increased, and the compressive strength and tensile strength of the prepared curbstone are enhanced;
(3) the coagulant aid is prepared from soil-grade polyglutamic acid and N-hydroxymethyl acrylamide, the N-hydroxymethyl acrylamide is subjected to copolymerization reaction under the initiation of potassium persulfate to generate acrylic resin containing hydroxyl in the structure, and the hydroxyl contained in the acrylic resin and the soil-grade polyglutamic acid are subjected to esterification reaction to finally generate the coagulant aid;
(4) according to the invention, 4A molecular sieve raw powder is used as a dispersing agent during the preparation of the composite rare earth oxide, and the compression strength and the tensile strength of the prepared road tartar are further obviously enhanced by adding a small amount of the prepared composite rare earth oxide.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
(1) Ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) reinforcing and coating petroleum coke: heating the petroleum coke micro powder at a heating rate of 5 ℃/min until the surface is completely softened, then adding equivalent superfine magnesium oxide under the condition of heat preservation and stirring, fully mixing, naturally cooling to room temperature, and processing the obtained solid into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the magnesium oxide coated petroleum coke micro powder;
(3) preparation of main materials: is prepared by mixing 25kg of stone powder, 10kg of medium sand, 5kg of blast furnace slag powder and 1kg of desulfurized gypsum powder;
(4) preparing auxiliary materials: is prepared by mixing 5kg of Portland cement, 3kg of magnesium oxide coated petroleum coke micro powder, 2kg of asbestos wool and 0.25kg of polyaspartic acid;
(5) and (3) low-temperature treatment of auxiliary materials: adding 15kg of water into the auxiliary materials, uniformly stirring, and standing for 12 hours at the temperature of 5-10 ℃;
(6) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
modification of asbestos wool: firstly, 3kg of asbestos wool is placed in an oven with the temperature of 110-.
Example 2
(1) Ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) reinforcing and coating petroleum coke: heating the petroleum coke micro powder at a heating rate of 5 ℃/min until the surface is completely softened, then adding equivalent superfine magnesium oxide under the condition of heat preservation and stirring, fully mixing, naturally cooling to room temperature, and processing the obtained solid into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the magnesium oxide coated petroleum coke micro powder;
(3) preparation of main materials: is prepared by mixing 30kg of stone powder, 15kg of medium sand, 5kg of blast furnace slag powder and 1kg of desulfurized gypsum powder;
(4) preparing auxiliary materials: is prepared by mixing 10kg of Portland cement, 3kg of magnesium oxide coated petroleum coke micro powder, 3kg of asbestos wool and 0.25kg of polyaspartic acid;
(5) and (3) low-temperature treatment of auxiliary materials: adding 20kg of water into the auxiliary materials, uniformly stirring, and standing for 12 hours at the temperature of 5-10 ℃;
(6) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
modification of asbestos wool: firstly, 3kg of asbestos wool is placed in an oven with the temperature of 110-.
Example 3
(1) Ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) reinforcing and coating petroleum coke: heating the petroleum coke micro powder at a heating rate of 5 ℃/min until the surface is completely softened, then adding equivalent superfine magnesium oxide under the condition of heat preservation and stirring, fully mixing, naturally cooling to room temperature, and processing the obtained solid into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the magnesium oxide coated petroleum coke micro powder;
(3) preparation of main materials: is prepared by mixing 30kg of stone powder, 15kg of medium sand, 5kg of blast furnace slag powder and 1kg of desulfurized gypsum powder;
(4) preparing auxiliary materials: is prepared by mixing 10kg of Portland cement, 3kg of magnesium oxide coated petroleum coke micro powder, 3kg of asbestos wool, 0.25kg of polyaspartic acid and 0.1kg of composite rare earth oxide;
(5) and (3) low-temperature treatment of auxiliary materials: adding 20kg of water into the auxiliary materials, uniformly stirring, and standing for 12 hours at the temperature of 5-10 ℃;
(6) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
modification of asbestos wool: firstly, 3kg of asbestos wool is placed in an oven with the temperature of 110-.
Preparing the composite rare earth oxide: mixing 5kg of cerium sulfate, 3kg of yttrium chloride and 2kg of neodymium carbonate, uniformly dispersing the mixture in 30kg of water, ball-milling the mixture by using a ball mill until the fineness of the mixture is less than 50 mu m, adding 2kg of 4A molecular sieve raw powder, uniformly stirring, then sending the mixture into a freeze dryer, drying the obtained solid to obtain micro powder by using an ultrafine pulverizer, heating the micro powder to 300 ℃ at a heating rate of 5 ℃/min for 3 hours in a nitrogen atmosphere, and continuously heating the micro powder to 600 ℃ at a heating rate of 5 ℃/min for 8 hours to obtain the composite rare earth oxide.
Example 4
(1) Ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) reinforcing and coating petroleum coke: heating the petroleum coke micro powder at a heating rate of 5 ℃/min until the surface is completely softened, then adding equivalent superfine magnesium oxide under the condition of heat preservation and stirring, fully mixing, naturally cooling to room temperature, and processing the obtained solid into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the magnesium oxide coated petroleum coke micro powder;
(3) preparation of main materials: is prepared by mixing 30kg of stone powder, 15kg of medium sand, 5kg of blast furnace slag powder and 1kg of desulfurized gypsum powder;
(4) preparing auxiliary materials: is prepared by mixing 10kg of Portland cement, 3kg of magnesium oxide coated petroleum coke micro powder, 3kg of asbestos wool, 0.5kg of coagulant aid and 0.25kg of polyaspartic acid;
(5) and (3) low-temperature treatment of auxiliary materials: adding 20kg of water into the auxiliary materials, uniformly stirring, and standing for 12 hours at the temperature of 5-10 ℃;
(6) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
modification of asbestos wool: firstly, 3kg of asbestos wool is placed in an oven with the temperature of 110-.
Preparation of coagulant aid: mixing 1kg of soil-grade polyglutamic acid and 0.5kg of N-hydroxymethyl acrylamide, adding water to completely dissolve, adding 0.05kg of potassium persulfate saturated aqueous solution, dropwise adding dilute sulfuric acid solution to adjust the pH value of the system to 4-5, heating to a reflux state, preserving heat, stirring, reacting, sending the obtained mixture into a spray dryer after the reaction is finished, drying the obtained particles, and preparing the particles into micro powder by using an ultrafine grinder to obtain the coagulant aid.
Example 5
(1) Ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) reinforcing and coating petroleum coke: heating the petroleum coke micro powder at a heating rate of 5 ℃/min until the surface is completely softened, then adding equivalent superfine magnesium oxide under the condition of heat preservation and stirring, fully mixing, naturally cooling to room temperature, and processing the obtained solid into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the magnesium oxide coated petroleum coke micro powder;
(3) preparation of main materials: is prepared by mixing 30kg of stone powder, 15kg of medium sand, 5kg of blast furnace slag powder and 1kg of desulfurized gypsum powder;
(4) preparing auxiliary materials: is prepared by mixing 10kg of Portland cement, 3kg of magnesium oxide coated petroleum coke micro powder, 3kg of asbestos wool, 0.5kg of coagulant aid, 0.25kg of polyaspartic acid and 0.1kg of composite rare earth oxide;
(5) and (3) low-temperature treatment of auxiliary materials: adding 20kg of water into the auxiliary materials, uniformly stirring, and standing for 12 hours at the temperature of 5-10 ℃;
(6) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
modification of asbestos wool: firstly, 3kg of asbestos wool is placed in an oven with the temperature of 110-.
Preparation of coagulant aid: mixing 1kg of soil-grade polyglutamic acid and 0.5kg of N-hydroxymethyl acrylamide, adding water to completely dissolve, adding 0.05kg of potassium persulfate saturated aqueous solution, dropwise adding dilute sulfuric acid solution to adjust the pH value of the system to 4-5, heating to a reflux state, preserving heat, stirring, reacting, sending the obtained mixture into a spray dryer after the reaction is finished, drying the obtained particles, and preparing the particles into micro powder by using an ultrafine grinder to obtain the coagulant aid.
Preparing the composite rare earth oxide: mixing 5kg of cerium sulfate, 3kg of yttrium chloride and 2kg of neodymium carbonate, uniformly dispersing the mixture in 30kg of water, ball-milling the mixture by using a ball mill until the fineness of the mixture is less than 50 mu m, adding 2kg of 4A molecular sieve raw powder, uniformly stirring, then sending the mixture into a freeze dryer, drying the obtained solid to obtain micro powder by using an ultrafine pulverizer, heating the micro powder to 300 ℃ at a heating rate of 5 ℃/min for 3 hours in a nitrogen atmosphere, and continuously heating the micro powder to 600 ℃ at a heating rate of 5 ℃/min for 8 hours to obtain the composite rare earth oxide.
Comparative example 1
(1) Ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) reinforcing and coating petroleum coke: heating the petroleum coke micro powder at a heating rate of 5 ℃/min until the surface is completely softened, then adding equivalent superfine magnesium oxide under the condition of heat preservation and stirring, fully mixing, naturally cooling to room temperature, and processing the obtained solid into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the magnesium oxide coated petroleum coke micro powder;
(3) preparation of main materials: is prepared by mixing 25kg of stone powder, 10kg of medium sand, 5kg of blast furnace slag powder and 1kg of desulfurized gypsum powder;
(4) preparing auxiliary materials: is prepared by mixing 5kg of Portland cement, 3kg of magnesium oxide coated petroleum coke micro powder and 2kg of asbestos wool;
(5) and (3) low-temperature treatment of auxiliary materials: adding 15kg of water into the auxiliary materials, uniformly stirring, and standing for 12 hours at the temperature of 5-10 ℃;
(6) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
modification of asbestos wool: firstly, 3kg of asbestos wool is placed in an oven with the temperature of 110-.
Comparative example 2
(1) Ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) reinforcing and coating petroleum coke: heating the petroleum coke micro powder at a heating rate of 5 ℃/min until the surface is completely softened, then adding equivalent superfine magnesium oxide under the condition of heat preservation and stirring, fully mixing, naturally cooling to room temperature, and processing the obtained solid into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the magnesium oxide coated petroleum coke micro powder;
(3) preparation of main materials: is prepared by mixing 25kg of stone powder, 10kg of medium sand, 5kg of blast furnace slag powder and 1kg of desulfurized gypsum powder;
(4) preparing auxiliary materials: is prepared by mixing 5kg of Portland cement, 3kg of magnesium oxide coated petroleum coke micro powder, 2kg of asbestos wool and 0.25kg of polyaspartic acid;
(5) and (3) low-temperature treatment of auxiliary materials: adding 15kg of water into the auxiliary materials, uniformly stirring, and standing for 12 hours at the temperature of 5-10 ℃;
(6) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
comparative example 3
(1) Ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) preparation of main materials: is prepared by mixing 25kg of stone powder, 10kg of medium sand, 5kg of blast furnace slag powder and 1kg of desulfurized gypsum powder;
(3) preparing auxiliary materials: is prepared by mixing 5kg of Portland cement, 3kg of petroleum coke micro powder, 2kg of asbestos wool and 0.25kg of polyaspartic acid;
(4) and (3) low-temperature treatment of auxiliary materials: adding 15kg of water into the auxiliary materials, uniformly stirring, and standing for 12 hours at the temperature of 5-10 ℃;
(5) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
modification of asbestos wool: firstly, 3kg of asbestos wool is placed in an oven with the temperature of 110-.
Comparative example 4
(1) Ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) preparation of main materials: is prepared by mixing 25kg of stone powder, 10kg of medium sand, 5kg of blast furnace slag powder and 1kg of desulfurized gypsum powder;
(3) preparing auxiliary materials: is prepared by mixing 5kg of Portland cement, 1.5kg of petroleum coke micro powder, 1.5kg of superfine magnesium oxide, 2kg of asbestos wool and 0.25kg of polyaspartic acid;
(4) and (3) low-temperature treatment of auxiliary materials: adding 15kg of water into the auxiliary materials, uniformly stirring, and standing for 12 hours at the temperature of 5-10 ℃;
(5) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
modification of asbestos wool: firstly, 3kg of asbestos wool is placed in an oven with the temperature of 110-.
Example 6
A control example 1 in which no polyaspartic acid was added, a control example 2 in which asbestos wool was not modified, a control example 3 in which no reinforcing coating treatment was applied to petroleum coke, and a control example 4 in which the same amount of petroleum coke fine powder and ultrafine magnesium oxide was used instead of magnesium oxide-coated petroleum coke fine powder were provided.
The same specification of the road tartar was prepared by using examples 1-5 and comparative examples 1-4, respectively, wherein the same batch of products produced by the same factory was selected as all the corresponding preparation raw materials. The compression strength and tensile strength (GB/T50081-2016) of the obtained road dental stone were measured, and the results are shown in Table 1.
TABLE 1 compression and tensile Strength test results for the curbstones made according to the present invention
| Group of | Bearing area/mm2 | Average compressive strength/MPa | Average tensile strength/MPa |
| Example 1 | 22500 | 33.2 | 3.7 |
| Example 2 | 22500 | 33.8 | 3.9 |
| Example 3 | 22500 | 35.1 | 4.5 |
| Example 4 | 22500 | 36.4 | 5.3 |
| Example 5 | 22500 | 38.3 | 5.8 |
| Comparative example 1 | 22500 | 31.6 | 3.5 |
| Comparative example 2 | 22500 | 28.5 | 2.9 |
| Comparative example 3 | 22500 | 26.0 | 2.2 |
| Comparative example 4 | 22500 | 27.2 | 2.5 |
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A process for preparing a curb stone by utilizing concrete containing asbestos wool is characterized by comprising the following steps:
(1) ultra-fining petroleum coke: processing the petroleum coke into micro powder with the fineness of less than 300 meshes by using a micro powder mill to obtain the petroleum coke micro powder;
(2) reinforcing and coating petroleum coke: heating the petroleum coke micro powder at a heating rate of 3-5 ℃/min until the surface is completely softened, then adding equivalent superfine magnesium oxide under heat preservation and stirring, fully mixing, naturally cooling to room temperature, and processing the obtained solid into micro powder with the fineness of less than 300 meshes by using a micro powder mill, thus obtaining the magnesium oxide coated petroleum coke micro powder;
(3) preparation of main materials: is prepared by mixing stone powder, medium sand, blast furnace slag powder and desulfurized gypsum powder;
(4) preparing auxiliary materials: is prepared by mixing portland cement, magnesium oxide coated petroleum coke micro powder, asbestos wool and polyaspartic acid;
(5) and (3) low-temperature treatment of auxiliary materials: adding water into the auxiliary materials, stirring uniformly, and standing for 12-24h at 5-10 ℃;
(6) processing the curbstone: uniformly stirring the auxiliary materials and the main materials after low-temperature treatment, pouring the mixture into a curbstone mold, demolding after 24 hours, and curing for 28 days at 15-20 ℃ to obtain the curbstone;
the asbestos wool is subjected to modification treatment, and the modification method comprises the following steps: firstly, asbestos wool is placed in an oven with the temperature of 110-;
the auxiliary material also comprises a coagulant aid, and the mass ratio of the coagulant aid to the portland cement is 0.25-1: 5-10;
the coagulant aid is prepared from soil-grade polyglutamic acid and N-hydroxymethyl acrylamide, and the preparation method comprises the following steps: mixing soil-grade polyglutamic acid and N-hydroxymethyl acrylamide, adding water to dissolve completely, adding a potassium persulfate saturated aqueous solution, dropwise adding a dilute sulfuric acid solution to adjust the pH value of the system to 4-5, heating to a reflux state, keeping the temperature, stirring and reacting, sending the obtained mixture into a spray dryer after the reaction is finished, drying the obtained particles, and preparing the particles into micro powder by using an ultrafine pulverizer to obtain the coagulant aid.
2. The process for preparing the curb stone by using the concrete containing the asbestos wool as claimed in claim 1, wherein: the mass ratio of the asbestos wool, the C5 hydrogenated petroleum resin and the turpentine is 1-5:0.05-0.5: 0.05-0.5.
3. The process for preparing the curb stone by using the concrete containing the asbestos wool as claimed in claim 1, wherein: the mass ratio of the stone powder, the medium sand, the blast furnace slag powder, the desulfurized gypsum powder, the silicate cement, the magnesium oxide coated petroleum coke micro powder, the asbestos wool, the polyaspartic acid and the water is 20-30:10-15:5-10:1-5:5-10:1-5: 0.25-0.5: 15-25.
4. The process for preparing the curb stone by using the concrete containing the asbestos wool as claimed in claim 1, wherein: the mass ratio of the soil-grade polyglutamic acid to the N-hydroxymethyl acrylamide to the potassium persulfate saturated aqueous solution is 5-10:5-10: 0.5-1.
5. The process for preparing the curb stone by using the concrete containing the asbestos wool as claimed in claim 1, wherein: the auxiliary material also comprises a composite rare earth oxide, and the mass ratio of the composite rare earth oxide to the portland cement is 0.05-0.25: 5-10.
6. The process for preparing the curb stone by using the concrete processing containing the asbestos wool according to the claim 5, wherein: the composite rare earth oxide is prepared from cerium sulfate, yttrium chloride, neodymium carbonate and 4A molecular sieve raw powder, and the preparation method comprises the following steps: mixing cerium sulfate, yttrium chloride and neodymium carbonate, uniformly dispersing the mixture in water, ball-milling the mixture by a ball mill until the fineness of the mixture is less than 50 mu m, adding 4A molecular sieve raw powder, uniformly stirring the mixture, then sending the mixture into a freeze dryer, drying the obtained solid, preparing the solid into micropowder by an ultrafine pulverizer, heating the micropowder to 300 ℃ at the heating rate of 5 ℃/min for 3 hours in the nitrogen atmosphere, and continuing heating the micropowder to 600 ℃ at the heating rate of 5 ℃/min for 8 hours to obtain the composite rare earth oxide.
7. The process for preparing the curb stone by using the concrete containing the asbestos wool as claimed in claim 6, wherein: the mass ratio of the cerium sulfate to the yttrium chloride to the neodymium carbonate to the water to the 4A molecular sieve raw powder is 5:3:2:20-30: 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353819.4A CN108585725B (en) | 2018-04-19 | 2018-04-19 | Process for preparing curb stone by processing concrete containing asbestos wool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353819.4A CN108585725B (en) | 2018-04-19 | 2018-04-19 | Process for preparing curb stone by processing concrete containing asbestos wool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108585725A CN108585725A (en) | 2018-09-28 |
| CN108585725B true CN108585725B (en) | 2021-03-26 |
Family
ID=63613888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810353819.4A Active CN108585725B (en) | 2018-04-19 | 2018-04-19 | Process for preparing curb stone by processing concrete containing asbestos wool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108585725B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183175A (en) * | 2019-05-24 | 2019-08-30 | 南京林业大学 | A kind of historic gardens artificial hillock and its processing method conducive to the green plant of cultivation |
| CN112521098A (en) * | 2020-12-17 | 2021-03-19 | 临澧县龙凤山矿渣粉磨有限公司 | Curb stone prepared by processing slag and fly ash |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215858A (en) * | 2007-12-29 | 2008-07-09 | 包头市科强新型材料有限公司 | Rare-earth composite wall heat-insulating layer and heat-insulating layer material preparation method |
| CN103030339A (en) * | 2009-12-25 | 2013-04-10 | 许春雷 | Formula for producing gutter apron, road side stones and floor tiles |
| CN104926223A (en) * | 2015-05-19 | 2015-09-23 | 中国矿业大学 | Formula of salt-frost-resistant gravel concrete curb and preparation method of curb |
| CN106316326A (en) * | 2016-08-31 | 2017-01-11 | 韩涛 | Method for preparing building material from desulfurization gypsum |
| CN107721231A (en) * | 2017-10-18 | 2018-02-23 | 马多浩 | A kind of efficient early strength water-reducing agent of Compositional type for concrete |
-
2018
- 2018-04-19 CN CN201810353819.4A patent/CN108585725B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215858A (en) * | 2007-12-29 | 2008-07-09 | 包头市科强新型材料有限公司 | Rare-earth composite wall heat-insulating layer and heat-insulating layer material preparation method |
| CN103030339A (en) * | 2009-12-25 | 2013-04-10 | 许春雷 | Formula for producing gutter apron, road side stones and floor tiles |
| CN104926223A (en) * | 2015-05-19 | 2015-09-23 | 中国矿业大学 | Formula of salt-frost-resistant gravel concrete curb and preparation method of curb |
| CN106316326A (en) * | 2016-08-31 | 2017-01-11 | 韩涛 | Method for preparing building material from desulfurization gypsum |
| CN107721231A (en) * | 2017-10-18 | 2018-02-23 | 马多浩 | A kind of efficient early strength water-reducing agent of Compositional type for concrete |
Non-Patent Citations (1)
| Title |
|---|
| 《不同分子量聚天冬氨酸对混凝土性能的影响》;张广田等;《混凝土与水泥制品》;20160622(第5期);摘要 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108585725A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109293318B (en) | Pervious concrete | |
| KR101705242B1 (en) | Ultra-high performance fiber-reinforced concrete for improving construct ability, and manufacturing method for the same | |
| CN105016765A (en) | Corrosion resistant water permeable brick | |
| CN109265180B (en) | High-compression-resistance pervious concrete brick and preparation method thereof | |
| CN107365120B (en) | Concrete cementing material, high-durability fair-faced concrete and preparation method thereof | |
| CN113354334B (en) | Composite fiber anti-cracking agent | |
| CN113213854B (en) | Fair-faced concrete produced from construction waste recycled aggregate and preparation method thereof | |
| KR101591275B1 (en) | Ultra-high strength concrete for improving construct ability, and manufacturing method for the same | |
| CN108585725B (en) | Process for preparing curb stone by processing concrete containing asbestos wool | |
| CN111908862A (en) | Renewable environment-friendly pervious concrete and preparation method thereof | |
| CN112537932B (en) | Pervious concrete and construction method thereof | |
| CN109250980A (en) | A kind of steel slag concrete and preparation method thereof | |
| CN114455919B (en) | Ultrafine steel slag powder gel and method for preparing concrete by using same | |
| CN108298814A (en) | A kind of novel building glass and preparation method thereof | |
| CN108558309B (en) | Curb prepared by processing solid waste blast furnace slag and fly ash | |
| CN113831077B (en) | Adhesive for water-permeable paving material and application thereof | |
| CN113698115B (en) | Active auxiliary cementing material and method for on-line tempering of steel slag | |
| CN108191346B (en) | Prefabricated building sleeve grouting material | |
| CN107759153B (en) | Alkali-activated high-titanium slag permeable product and preparation method thereof | |
| CN108546064B (en) | Processing method of road dental stone doped with sepiolite fibers to improve strength | |
| CN109081639B (en) | Concrete precast bridge panel with plasticizer | |
| CN104016623A (en) | Hydrophobic antifouling concrete and preparation method thereof | |
| CN108689664A (en) | A kind of environment-friendly concrete and preparation method thereof | |
| CN111116122A (en) | Solid waste concrete stone, steel slag permeable brick based on solid waste concrete stone and preparation method of steel slag permeable brick | |
| KR100625045B1 (en) | An artificial stone using blast furnace slag and fabricating method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |