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A new type of road polymer mixture and its preparation method

A mixture and polymer technology, which is applied in the field of new road polymer mixture and its preparation, can solve the problems of inability to form a continuous and effective adhesive layer, low BTA solid content, easy loose peeling, etc., to reduce loose peeling, The effect of increasing solid content and improving cohesion

Active Publication Date: 2020-12-25
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional BTA mixtures have poor cohesiveness, and are easy to loose and peel off during the mixing and molding process. The reason is that the solid content of BTA is low and cannot form a continuous and effective bonding layer.

Method used

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  • A new type of road polymer mixture and its preparation method
  • A new type of road polymer mixture and its preparation method
  • A new type of road polymer mixture and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] S1: Choose BTA-Ⅱ type mineral material gradation, choose limestone as mineral material, the added weight of emulsion and cement is calculated according to the percentage of the weight of the mixture: the amount of emulsion is 6%, BTA: emulsified asphalt = 8:2, the amount of cement is 4 %, according to the BTA-Ⅱ type mineral material gradation, carry out mineral material screening, weighing, and back-mixing. Weigh 188g of cement, 238g of BTA, and 60g of emulsified asphalt. The quality of each particle size of the mineral material is shown in Table 4:

[0033] Table 4 Example 1 Mineral material each particle size quality

[0034]

[0035] S2: In step S1, the ore powder is a mineral material with a particle size of less than 0.075mm. In step S1, all mineral materials with particle sizes other than mineral powder are added to the mixing pot, and 149g of water is added, and mixed evenly to make the mineral material wet surface;

[0036] Step S3: Add the new road water-ba...

Embodiment 2

[0043]S1: Choose BTA-Ⅱ for mineral material grading, limestone as mineral material, the added weight of emulsion and cement is calculated according to the percentage of the weight of the mixture: the amount of emulsion is 8%, BTA: emulsified asphalt = 5:5, and the amount of cement is 2 %, according to the BTA-Ⅱ type mineral material gradation, carry out mineral material screening, weighing, and back-mixing. Weigh 90g of cement, 198g of BTA, and 198g of emulsified asphalt. The quality of each particle size of the mineral material is shown in Table 6:

[0044] Table 6 Example 2 The mass of each particle size of the mineral material

[0045]

[0046] S2: In step S1, the ore powder is a mineral material with a particle size of less than 0.075mm. In step S1, all mineral materials with particle sizes other than mineral powder are added to the mixing pot, and 149g of water is added, and mixed evenly to make the mineral material wet surface;

[0047] Step S3: Add the new road wate...

Embodiment 3

[0054] S1: Choose BTA-Ⅱ for mineral material grading, limestone as mineral material, and the added weight of emulsion, cement, and lignin fiber are calculated according to the percentage of the weight of the mixture: the amount of emulsion is 8%, BTA: emulsified asphalt = 7:3 , cement consumption 2%, lignin fiber 0.45%, carry out mineral material screening, weighing, back-mixing according to BTA-Ⅱ type mineral material gradation, take cement 90g, BTA277g, emulsified asphalt 119g, lignin fiber=20g, The quality of each particle size of mineral materials is shown in Table 8:

[0055] The quality of each particle size of the ore material in the embodiment 3 of table 8

[0056]

[0057] S2: In step S1, the ore powder is a mineral material with a particle size of less than 0.075mm. In step S1, all mineral materials with particle sizes other than mineral powder are added to the mixing pot, and 149g of water is added, and mixed evenly to make the mineral material wet surface;

[...

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Abstract

The invention discloses a novel polymer mixture for a road. The novel polymer mixture for the road comprises mineral aggregates, emulsion, cement and lignin fibers, wherein 6-8% by weight of emulsionis added, 2-4% by weight of cement is added, and 0-0.45% by weight of lignin fibers are added based on the weight of the mixture; the emulsion comprises novel water-based high-molecular polymer for the road and emulsified asphalt based on the mass ratio of 5:(5-8):2. According to the novel polymer mixture for the road, the emulsified asphalt and BTA are combined and used, so that the solid contentof a binder can be increased; the adhering and gathering performance of the mixture is improved; the loosening and peeling off are reduced; cement is added, so that the performances of the mixture can be comprehensively improved; the strength of the mixture is improved; the water stability is improved; the lignin fibers are added, so that the adhering and gathering performance of the mixture canbe improved; the effects of reinforcing and crack resisting can be achieved.

Description

technical field [0001] The invention relates to the technical field of road surfaces, in particular to a novel road-use polymer mixture and a preparation method thereof. Background technique [0002] BTA is translated as a new type of road water-based polymer, a new environmentally friendly water-based polymer material, which is mainly used for road surface maintenance and surface paving of new road surfaces. The mixture is called BTA mixture. When BTA mixture is used for surface paving of roads, squares, docks, etc., the use method and properties are similar to cold-mix asphalt mixture. The main components of BTA include modified polyvinyl alcohol, sodium stearate, vinyl acetate, homopolymer dispersion, waterproof dispersant and defoamer processed with petroleum solvent, methyl methacrylate monomer, a small amount of asphalt, The rest is water. The conventional BTA mixture is a mixture that only uses BTA as the binder. Domestic and foreign studies have shown that the water...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B111/34
CPCC04B28/00C04B2111/343C04B24/36C04B24/24C04B14/28C04B18/26
Inventor 张新天冯明硕薛辉赵岩张伟高金岐王健王志刚
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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