CN116217128B - Polymer pavement material and preparation method thereof - Google Patents

Polymer pavement material and preparation method thereof Download PDF

Info

Publication number
CN116217128B
CN116217128B CN202310520582.5A CN202310520582A CN116217128B CN 116217128 B CN116217128 B CN 116217128B CN 202310520582 A CN202310520582 A CN 202310520582A CN 116217128 B CN116217128 B CN 116217128B
Authority
CN
China
Prior art keywords
parts
polyurea
polymer
component
cement
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
Application number
CN202310520582.5A
Other languages
Chinese (zh)
Other versions
CN116217128A (en
Inventor
吴昊
陈小宝
宋卫民
杨梅
吴哲正
陈栋炜
詹易群
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central South University
Original Assignee
Central South University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Central South University filed Critical Central South University
Priority to CN202310520582.5A priority Critical patent/CN116217128B/en
Publication of CN116217128A publication Critical patent/CN116217128A/en
Application granted granted Critical
Publication of CN116217128B publication Critical patent/CN116217128B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B26/20—Polyamides
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/06—Quartz; Sand
    • C04B14/068—Specific natural sands, e.g. sea -, beach -, dune - or desert sand
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/14—Minerals of vulcanic origin
    • 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
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • 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
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C04B16/06—Macromolecular compounds fibrous
    • C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B16/0641—Polyvinylalcohols; Polyvinylacetates
    • 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
    • C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
    • C04B24/045—Esters, e.g. lactones
    • 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
    • C04B24/08—Fats; Fatty oils; Ester type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
    • 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
    • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/281—Polyepoxides
    • 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
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention discloses a polymer pavement material and a preparation method thereof. The polymer pavement material comprises the following raw material components in parts by weight: 8-17 parts of polyurea, 0-3 parts of epoxy resin, 0.3-1.2 parts of aromatic oil, 0.3-0.8 parts of PVA fiber, 0.5-1.0 parts of rubber particles, 0-1.5 parts of diluent and 60-80 parts of aggregate. The polymer pavement material also comprises the following raw material components: 0-17 parts of cement, 3-5 parts of clean water, 0.1-0.5 part of water reducer and 0.1-0.5 part of defoamer. The polymer pavement material prepared by the invention has good crack resistance, high toughness and high elasticity, and can effectively solve the problems of poor toughness, easiness in cracking, low bonding strength, poor durability and the like of concrete.

Description

Polymer pavement material and preparation method thereof
Technical Field
The invention belongs to the technical field of preparation of highway engineering functional pavement materials, and particularly relates to a polymer pavement material and a preparation method thereof.
Background
In the process of high-speed development of highway industry in China, cement concrete taking cement as cementing material and asphalt concrete taking asphalt as cementing material gradually become main forms of pavement materials. The cement concrete has the advantages of high strength, strong bearing capacity, high temperature resistance, low cost and the like, but the cement-based cementing material has the defects of high rigidity, poor toughness, low bonding strength and the like after being hardened, so that the tensile strength of the cement-based material is lower, and cracks are easy to generate when the cement-based cementing material is restrained; asphalt concrete has the advantages of high strength, no seam, small noise, quick repair and the like, but asphalt concrete has strong temperature sensitivity, easy aging, poor weather resistance and water resistance. In contrast, concrete using high molecular polymers as binders has many excellent mechanical properties and road performance. The high polymer utilizes polymerization reaction to crosslink the small molecular monomers with each other in a chemical bond connection mode to form a three-dimensional network structure, and the molecular chain segments of the polymer can be loosened, so that certain deformation is allowed to be generated, and the high polymer has better toughness and viscoelasticity. Therefore, the polymer emulsion is reasonably screened as cementing material and mixed with sand stone, so that the toughness and cohesiveness of the obtained polymer concrete are greatly enhanced, the polymer concrete has high elasticity, high toughness and good crack resistance, the impermeability and fluidity are improved to a certain extent, the construction can be performed at normal temperature, and the structure, shape and performance of the product are optimized. On the basis, the problems of durability and deformability of cement concrete and asphalt concrete are improved or solved.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a high-toughness, high-elasticity polymer pavement material and a method for preparing the same. The polymer pavement material provided by the invention has excellent toughness, elasticity, crack resistance, durability and other performances.
The polymer pavement material provided by the invention comprises the following raw material components in parts by weight: 8-17 parts of polyurea, 0-3 parts of epoxy resin, 0.3-1.2 parts of aromatic oil, 0.3-0.8 parts of polyvinyl alcohol (PVA) fiber, 0.5-1.0 parts of rubber particles, 0-1.5 parts of diluent and 60-80 parts of aggregate.
Preferably, the polyurea is a double-component manual polyurea and consists of an A component and a B component, wherein the mass ratio of the A component to the B component is 1:1; the main component of the component A is diphenylmethane diisocyanate (MDI), and the main component of the component B is amine-terminated polyether and a delayed diamine chain extender; the breaking elongation of the polyurea is not less than 300%, the tensile strength is not less than 10MPa, the adhesive force is not less than 2.5MPa, and the density is 1.08 g/cm 3 The surface drying time is less than 2 hours.
In the invention, the aromatic hydrocarbon oil is environment-friendly aromatic hydrocarbon oil with high content, low volatility, aging resistance and toughness, and the main components of the aromatic hydrocarbon oil are benzene, toluene and xylene.
Preferably, the diluent is ethyl acetate.
Preferably, the particle size of the rubber particles is 0.3-2 mm.
Preferably, the aggregate is at least one of natural river sand and machine-made sand.
The polymer pavement material also comprises the following raw material components in parts by weight: 0-17 parts of cement; 3-5 parts of clean water; 0.1-0.5 part of water reducer; 0.1 to 0.5 part of defoamer.
Preferably, the cement is Portland cement.
Preferably, the water reducer is a polycarboxylic acid high-efficiency water reducer.
Preferably, the defoamer is a silicone defoamer.
The preparation method of the polymer pavement material provided by the invention comprises the following steps:
1) Preparing raw materials according to the raw material composition formula of the polymer pavement material;
2) Fully stirring the component A and the component B of polyurea to prepare polyurea emulsion;
3) Adding aromatic hydrocarbon oil into the polyurea emulsion, and continuously stirring to prepare polymer emulsion;
4) Mixing and stirring epoxy resin, a diluent and polymer emulsion to prepare a polymer modified cementing material;
5) Drying aggregate, polyvinyl alcohol fibers and rubber particles to be in a non-water state, and then uniformly mixing and stirring to obtain an aggregate mixture;
6) And (3) mixing the polymer modified cementing material prepared in the step (4) with the aggregate mixture prepared in the step (5), and fully stirring to obtain the polymer pavement material.
The preparation method of the polymer pavement material comprises the following steps:
s1, preparing raw materials according to a raw material composition formula of the polymer pavement material;
s2, mixing the component A and the component B of the polyurea, and fully stirring to prepare polyurea emulsion;
s3, adding aromatic hydrocarbon oil, a diluent and epoxy resin into the polyurea emulsion, and mixing to prepare a polymer emulsion;
s4, adding the water reducer into water, mixing, and fully stirring to prepare an aqueous solution;
s5, adding the aqueous solution into cement, and mixing to prepare cement paste;
s6, mixing the cement paste obtained in the step S5 with the polymer emulsion obtained in the step S3, and fully stirring to obtain a polymer modified cement-based cementing material;
s7, adding aggregate, rubber particles and polyvinyl alcohol fibers into the polymer modified cement-based cementing material in the step S6, fully stirring, and adding a defoaming agent before stirring to obtain the polymer pavement material.
The invention has the beneficial effects that:
the polymer pavement material prepared by the invention has good crack resistance, high toughness and high elasticity, and can effectively solve the problems of poor toughness, easiness in cracking, low bonding strength, poor durability and the like of concrete. Wherein, the strength of the polymer concrete is derived from the embedding and extrusion action of the aggregate, the toughening action of the fiber and the curing action of the polymer emulsion. The polymer emulsion forms a continuous film in the curing process to form an expansion joint, so that the composite matrix has stronger deformability, and the composite matrix transits from brittleness to flexibility. The polymer pavement material prepared by the invention takes polyurea as a cementing material main body, and epoxy resin is added to improve the bonding effect between polyurea emulsion and aggregate; aromatic oil is added to enhance the compatibility between the epoxy resin and the polyurea, toughen and improve the ageing resistance; ethyl acetate is added to reduce the viscosity of the polymer emulsion, which is beneficial to mixing and dispersing; rubber particles are added for physical toughening; the addition of polyvinyl alcohol fibers to form bridging is beneficial to stress transfer, so that the continuous film can be fully deformed, and the comprehensive performance of the material is improved.
Drawings
FIG. 1 is a stress-strain characteristic curve of the polymer pavement materials prepared in examples 1 to 4 and the cement-based cement prepared in comparative example.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and the following embodiments are illustrative of preparing porous pavement materials from aggregates with a single particle size of 2.36-4.75 mm, including aggregates with a single particle size, but not limited to aggregates with a single particle size. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples, the epoxy used was phoenix brand E51 epoxy.
In the following examples, the polyurea used is designated as Will terrace and is purchased from Shenzhen Will terrace materials Co. Polyurea emulsions were synthesized according to the methods of use provided by the company for wilt's terrace. The breaking elongation of polyurea is not less than 300%, the tensile strength is not less than 10MPa, the adhesive force is not less than 2.5MPa, and the density is 1.08 g/cm 3 The surface drying time is less than 2 hours.
In the examples below, the polyvinyl alcohol fibers used were commercially available.
In the following examples, the aggregate used was basalt machine-made sand.
In the following examples, the cement used was p.o42.5 portland cement.
Example 1
The polymer pavement material provided by the embodiment comprises the following raw material components in parts by weight:
16.7 parts of polyurea, 2.0 parts of epoxy resin, 0.3 part of aromatic hydrocarbon oil, 0.8 part of rubber particles, 80 parts of aggregate and 0.5 part of PVA fiber.
The preparation process comprises the following steps: 1) Preparing raw materials according to the distribution ratio of each group; 2) Adding the polyurea A component into the polyurea B component according to the mass ratio of 1:1, slowly increasing the rotating speed of a stirrer from 0r/min to 600r/min, and stirring for 45 s-60 s to prepare uniform polyurea emulsion; 3) Sequentially adding aromatic oil, ethyl acetate and epoxy resin into the polyurea emulsion, slowly increasing the rotating speed of a stirrer from 0r/min to 1000r/min, and stirring for 60-90 s to prepare uniform polymer emulsion; 4) Placing the dried aggregate, PVA fiber and rubber particles in a planetary stirrer, and stirring for 45-60 s to prepare a uniform aggregate mixture; 5) And adding the polymer emulsion into the aggregate mixture, stirring at the stirring speed of not higher than 120r/min for 90-120 s to obtain the high-elasticity and high-toughness polymer pavement material.
Example two
The polymer pavement material provided by the embodiment comprises the following raw material components in parts by weight:
15.7 parts of polyurea; 2.0 parts of epoxy resin; 0.3 parts of aromatic hydrocarbon oil; 1.0 parts of ethyl acetate; 0.8 parts of rubber particles; 80 parts of aggregate; 0.5 parts of PVA fiber.
The preparation process comprises the following steps: 1) Preparing raw materials according to the distribution ratio of each group; 2) Adding the polyurea A component into the polyurea B component according to the mass ratio of 1:1, slowly increasing the rotation speed of a stirrer from 0r/min to 600r/min, and stirring for 45-60 s to prepare uniform polyurea emulsion; 3) Sequentially adding aromatic oil, ethyl acetate and epoxy resin into the polyurea emulsion, slowly increasing the rotating speed of a stirrer from 0r/min to 1000r/min, and stirring for 60-90 s to prepare uniform polymer emulsion; 4) Placing the dried aggregate, PVA fiber and rubber particles in a planetary stirrer, and stirring for 45-60 s to prepare a uniform aggregate mixture; 5) And adding the polymer emulsion into the aggregate mixture, stirring at the stirring speed of not higher than 120r/min for 90-120 s to obtain the high-elasticity and high-toughness polymer pavement material.
Example III
The polymer pavement material provided by the embodiment comprises the following raw material components in parts by weight:
12.3 parts of polyurea; 1.4 parts of epoxy resin; 0.3 parts of aromatic hydrocarbon oil; 0.6 part of ethyl acetate; 0.5 parts of rubber particles; 85 parts of aggregate; 0.5 parts of PVA fiber.
The preparation process comprises the following steps: 1) Preparing raw materials according to the distribution ratio of each group; 2) Adding the polyurea A component into the polyurea B component according to the mass ratio of 1:1, slowly increasing the rotating speed of a stirrer from 0r/min to 600r/min, and stirring for 45 s-60 s to prepare uniform polyurea emulsion; 3) Sequentially adding aromatic oil, ethyl acetate and epoxy resin into the polyurea emulsion, slowly increasing the rotating speed of a stirrer from 0r/min to 1000r/min, and stirring for 60-90 s to prepare uniform polymer emulsion; 4) Placing the dried aggregate, PVA fiber and rubber particles in a non-aqueous state in a planetary stirrer, and stirring for 45-60 s to prepare a uniform aggregate mixture; 5) And adding the polymer emulsion into the aggregate mixture, stirring at the stirring speed of not higher than 120r/min for 90-120 s to obtain the high-elasticity and high-toughness polymer pavement material.
Example IV
The polymer pavement material provided by the embodiment comprises the following raw material components in parts by weight:
8.2 parts of cement; 8.2 parts of polyurea; 0.3 parts of epoxy resin; 0.6 parts of aromatic hydrocarbon oil; 0.5 parts of ethyl acetate; 0.5 parts of rubber particles; 3 parts of clean water; 0.1 part of polycarboxylate water reducer; 0.1 part of organic silicon defoamer; 80 parts of aggregate; 0.5 parts of PVA fiber.
The preparation process comprises the following steps: 1) Preparing raw materials according to the proportion of each component; 2) Adding the polyurea A component into the polyurea B component according to the mass ratio of 1:1, slowly increasing the rotating speed of a stirrer from 0r/min to 600r/min, and stirring for 45 s-60 s to prepare uniform polyurea emulsion; 3) Sequentially adding aromatic oil, ethyl acetate and epoxy resin into the polyurea emulsion, slowly increasing the rotating speed of a stirrer from 0r/min to 1000r/min, and stirring for 60-90 s to prepare uniform polymer emulsion; 4) Adding a polycarboxylate water reducer into water, and manually stirring the solution to a state of full foaming to prepare an aqueous solution; 5) Placing the weighed cement in a planetary mixer, adding aqueous solution into the mixer, and stirring for 45-60 s to prepare uniform cement paste; 6) Adding the polymer emulsion into cement paste, and stirring for 90-150 s by using a planetary stirrer to obtain a polymer modified cement-based cementing material; 7) And adding aggregate, rubber particles and PVA fibers into the polymer modified cement-based cementing material, stirring at the stirring speed of not higher than 120r/min for 90-120 s, and adding an organosilicon defoamer before the stirring is finished to obtain the polymer pavement material. The material was cured under standard curing conditions for 28d.
Comparative example: the cement-based cementing material provided by the comparative example comprises the following raw material components in parts by weight:
15.3 parts of cement; 4.5 parts of clean water; 0.1 part of polycarboxylate water reducer; 0.1 part of organic silicon defoamer; 80 parts of aggregate.
The preparation process comprises the following steps: 1) Preparing raw materials according to the distribution ratio of each group; 2) Adding a polycarboxylate water reducer into water, and manually stirring the solution to a state of full foaming to prepare an aqueous solution; 3) Placing the weighed cement in a planetary mixer, adding an aqueous solution into the mixer, and stirring for 45-60 s to prepare uniform cement paste; 4) And adding aggregate into the cement paste, stirring at a stirring speed of not higher than 120r/min, and dropwise adding an organosilicon defoamer before stirring is finished to obtain the cement-based cementing material. The material was cured under standard curing conditions for 28d.
The polymer pavement materials of examples 1 to 4 and the cement-based cement of comparative example 1 were subjected to performance tests, and the results are shown in table 1.
TABLE 1 Performance test results of Polymer pavement materials and Cement-based Cement Adhesives
From the test data of the high-toughness and high-elasticity polymer pavement materials prepared in the examples 1-4 in the table 1, the compressive strength and the elastic modulus are increased along with the increase of the mixing amount of polyurea, the bearing capacity of the composite material is improved, but the diluent ethyl acetate has a certain weakening effect on the mechanical property; the ultimate strain energy density of example 1 reaches 4.20MPa, which indicates that the composite material has higher energy required when the composite material completely loses the bearing capacity, and the bending peak strain is 23.5%, which indicates that the composite material can generate larger bending deformation before being damaged by bearing load, has excellent bending performance and strong cracking resistance.
The polyurea emulsion forms a continuous film in the curing process to form an expansion joint, so that the composite matrix has stronger deformability, and the composite matrix transits from brittleness to flexibility. The addition of ethyl acetate and aromatic oil reduces the viscosity of the polyurea emulsion, is favorable for mixing and dispersing and improves the ageing resistance, the addition of rubber particles for physical toughening and the addition of polyvinyl alcohol fibers for bridging are favorable for stress transfer, so that the continuous film can be fully deformed, and the comprehensive performance of the material is improved.

Claims (7)

1. The polymer pavement material is characterized by comprising the following raw material components in parts by weight: 8-17 parts of polyurea, 0.3-2 parts of epoxy resin, 0.3-1.2 parts of aromatic oil, 0.3-0.8 parts of polyvinyl alcohol fiber, 0.5-1.0 parts of rubber particles, 0-1.5 parts of diluent and 60-80 parts of aggregate; the polyurea is a double-component manual polyurea and consists of a component A and a component B, wherein the mass ratio of the component A to the component B is 1:1; the component A comprises diphenylmethane diisocyanate, and the component B comprises amine-terminated polyether and a delayed diamine chain extender;
the breaking elongation of the polyurea is not less than 300%, the tensile strength is not less than 10MPa, the adhesive force is not less than 2.5MPa, and the density is 1.08 g/cm 3 The surface drying time is less than 2 hours;
the diluent is ethyl acetate.
2. The polymeric pavement material of claim 1, wherein the rubber particles have a particle size of 0.3 to 2mm.
3. The polymeric pavement material of claim 1, wherein the aggregate is at least one of natural river sand and machine-made sand.
4. The polymeric pavement material of claim 1, further comprising the following raw material components in parts by weight: 0-17 parts of cement; 3-5 parts of clean water; 0.1-0.5 part of water reducer; 0.1 to 0.5 part of defoamer.
5. The polymeric pavement material of claim 4, wherein the cement is portland cement; the water reducer is a polycarboxylic acid high-efficiency water reducer; the defoaming agent is an organosilicon defoaming agent.
6. A method of preparing the polymeric pavement material of any of claims 1-3, comprising the steps of:
1) Preparing raw materials according to the formula;
2) Fully stirring the component A and the component B of polyurea to prepare polyurea emulsion;
3) Adding aromatic hydrocarbon oil into the polyurea emulsion, and continuously stirring to prepare polymer emulsion;
4) Mixing and stirring epoxy resin, a diluent and polymer emulsion to prepare a polymer modified cementing material;
5) Drying aggregate, polyvinyl alcohol fibers and rubber particles to be in a non-water state, and then uniformly mixing and stirring to obtain an aggregate mixture;
6) And (3) mixing the polymer modified cementing material prepared in the step (4) with the aggregate mixture prepared in the step (5), and fully stirring to obtain the polymer pavement material.
7. A method of preparing the polymeric pavement material of claim 4 or 5, comprising the steps of:
s1, preparing raw materials according to the formula;
s2, mixing the component A and the component B of the polyurea, and fully stirring to prepare polyurea emulsion;
s3, adding aromatic hydrocarbon oil, a diluent and epoxy resin into the polyurea emulsion, and mixing to prepare a polymer emulsion;
s4, adding the water reducer into water, mixing, and fully stirring to prepare an aqueous solution;
s5, adding the aqueous solution into cement, and mixing to prepare cement paste;
s6, mixing the cement paste obtained in the step S5 with the polymer emulsion obtained in the step S3, and fully stirring to obtain a polymer modified cement-based cementing material;
s7, adding aggregate, rubber particles and polyvinyl alcohol fibers into the polymer modified cement-based cementing material in the step S6, fully stirring, and adding a defoaming agent before stirring to obtain the polymer pavement material.
CN202310520582.5A 2023-05-10 2023-05-10 Polymer pavement material and preparation method thereof Active CN116217128B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310520582.5A CN116217128B (en) 2023-05-10 2023-05-10 Polymer pavement material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310520582.5A CN116217128B (en) 2023-05-10 2023-05-10 Polymer pavement material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN116217128A CN116217128A (en) 2023-06-06
CN116217128B true CN116217128B (en) 2023-07-25

Family

ID=86570086

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310520582.5A Active CN116217128B (en) 2023-05-10 2023-05-10 Polymer pavement material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN116217128B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007269537A (en) * 2006-03-31 2007-10-18 Sumitomo Osaka Cement Co Ltd Premixed and high-toughness polymer cement mortar material and high-toughness polymer cement mortar
KR101389745B1 (en) * 2013-12-23 2014-04-29 남경중공업 주식회사 Polymer modified high-performance cement concrete composite for revealing high early strength and overlay pavement method for concrete using the composite
CN106478007A (en) * 2016-09-18 2017-03-08 同济大学 The modified cement-based composite of superhigh tenacity fiber-reinforced polymer and preparation method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1948622B (en) * 2006-10-31 2012-04-18 易志坚 Polymer modified cement hole concrete road surface structure and construction method
CN104193221B (en) * 2014-08-18 2016-01-27 山西省交通科学研究院 A kind of concrete pavement material being suitable for overload highway and preparation method thereof
KR101997905B1 (en) * 2018-06-04 2019-07-11 우백건설 주식회사 Mortar containing fluorine resin composition and method for repairing and repairing surface of concrete structure using same
CN108689636B (en) * 2018-06-20 2020-12-18 宁波工程学院 Polyurea resin rapid repairing material and road rapid repairing method
CN113354356B (en) * 2021-06-11 2022-05-10 东南大学 Waterborne polyurethane-cement-based repair material and preparation method thereof
CN113563014B (en) * 2021-07-20 2022-05-10 山东昆嵛路桥工程有限公司 Concrete for road and bridge construction and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007269537A (en) * 2006-03-31 2007-10-18 Sumitomo Osaka Cement Co Ltd Premixed and high-toughness polymer cement mortar material and high-toughness polymer cement mortar
KR101389745B1 (en) * 2013-12-23 2014-04-29 남경중공업 주식회사 Polymer modified high-performance cement concrete composite for revealing high early strength and overlay pavement method for concrete using the composite
CN106478007A (en) * 2016-09-18 2017-03-08 同济大学 The modified cement-based composite of superhigh tenacity fiber-reinforced polymer and preparation method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Research on the anti-icing properties of silicone modified polyurea coatings (SMPC) for asphalt pavement;Huanan Yu;《Construction and Building Materials》;第第242卷卷;第1-11页 *
改性聚合物水泥的应用;章玉梅;混凝土(01);第43-44页 *
钢管注浆填土的剪切强度特性;吴昊;《土工基础》;第第33卷卷(第第6期期);第690-692、696页 *

Also Published As

Publication number Publication date
CN116217128A (en) 2023-06-06

Similar Documents

Publication Publication Date Title
CN110357545B (en) Mortar for quickly repairing local damage of concrete base layer and preparation method thereof
CN113955990B (en) Semi-flexible concrete and preparation method thereof
CN109020369B (en) Concrete material for 3D printing and preparation method
CN114560656B (en) Double-scale toughened cement-based composite material and application thereof
CN112159168B (en) C35 basalt fiber concrete for abutment and preparation method thereof
CN113185191B (en) Modified bamboo fiber reinforced asphalt mixture and preparation method thereof
CN114409307B (en) High-strength high-toughness polyurethane concrete and preparation method and application thereof
CN111943587A (en) Recycled concrete and preparation method thereof
CN113480271B (en) Concrete pavement repairing material
CN113698170B (en) High-performance pervious concrete rapid repairing material and preparation method and application thereof
CN111606605A (en) Water-based epoxy resin modified emulsified asphalt cold-patch material for rapid road repair and preparation method thereof
CN109534720A (en) A kind of low linear expansion coefficient epoxy resin-matrix cement concrete material for rapid repairing of road and preparation method thereof
CN114573306A (en) High-strength rapid-setting concrete repairing material and preparation method and application thereof
CN111892362A (en) Building mortar and preparation method thereof
CN112408880A (en) Basalt fiber water-permeable concrete and preparation method thereof
CN113968702A (en) Fiber and polymer composite modified cement-based repair mortar and preparation method thereof
CN109626920A (en) A kind of concrete road surface material for quickly repairing and preparation method with high intensity and endurance quality
CN112159173A (en) High-strength concrete and preparation method thereof
CN105503083A (en) Self-permeation polymer composite cement mortar for semi-flexible bituminous pavement and preparation method thereof
CN111138140B (en) Polyurethane modified cement stabilized macadam and preparation method thereof
CN112745062A (en) Composite fiber modified asphalt mixture with excellent performance and preparation method thereof
CN116217128B (en) Polymer pavement material and preparation method thereof
CN110862249A (en) High-fluidity ECC self-healing mortar material and preparation method, performance evaluation method and application thereof
CN113845332A (en) Preparation method of polyurethane concrete and rapid repair method of polyurethane concrete for airport pavement
CN115536299A (en) Organic-inorganic composite toughening material and application thereof in concrete

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