Emulsified asphalt and preparation method thereof

A technology for emulsified asphalt and a manufacturing method, which is applied to building components, building insulation materials, buildings, etc., can solve the problems affecting the quality of cement emulsified asphalt mortar, narrow temperature adaptation range, and short working time, and achieves long working time and high temperature. Good adaptability and stability

Inactive Publication Date: 2010-09-01
江苏华宇铁路新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing emulsified asphalt mortar has shortcomings such as short working time, narrow temperature range, easy segregation and stratification, and poor filling performance. If it is used in CRTS II slab ballastless track, it will directly affect the quality of cement emulsified asphalt mortar

Method used

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  • Emulsified asphalt and preparation method thereof
  • Emulsified asphalt and preparation method thereof
  • Emulsified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The emulsified asphalt provided in this example is No. 90 heavy traffic road asphalt, fatty acid sulfoalkyl ester anionic emulsifier, alkylphenol polyoxyethylene ether nonionic emulsifier, lauryl amidopropyl betaine amphoteric Ionic emulsifier, polyether and cellulose compound stabilizer, water-soluble silica thixotropic agent, the composition of which is shown in Table 3. The emulsified asphalt prepared in this example has good thixotropy, and the prepared mortar has good temperature adaptability, no subsidence, no layering and segregation after the mortar is cured, and is suitable for low temperature construction. The preparation steps are as follows:

[0032] ① Turn on the steam heating system, heat the No. 90 heavy traffic road asphalt to 130°C-160°C with the coil heating system in the ground tank to melt, use the pump to pump the asphalt to the batching tank, and heat the asphalt with the stated ratio to the batching tank for batching The tank is equipped with ste...

Embodiment 2

[0036] The emulsified asphalt provided by this example, the adopted asphalt is No. 90 heavy traffic road asphalt, lignosulfonate anionic emulsifier, cellulose stabilizer, water-soluble silica thixotropic agent, its composition is as shown in Table 3 shown. The emulsified asphalt prepared in this example is suitable for construction at room temperature. The preparation steps are as follows:

[0037]① Turn on the steam heating system, heat the No. 90 heavy traffic road asphalt to 130°C-160°C with the coil heating system in the ground tank to melt, use the pump to pump the asphalt to the batching tank, and heat the asphalt with the stated ratio to the batching tank for batching The tank is equipped with steam heating equipment, the temperature control parameters are set through the PLC control system, and the asphalt temperature is controlled at 130±5°C by controlling the opening of the steam valve, and the stirring is started;

[0038] ②Put the cellulose stabilizer, water-solu...

Embodiment 3

[0041] The emulsified asphalt provided in this example is No. 90 heavy traffic road asphalt, lignosulfonate anionic emulsifier, lauryl amidopropyl betaine and amino acid type zwitterionic emulsifier, cellulose stabilizer , whose composition is shown in Table 3. The emulsified asphalt prepared in this example is suitable for construction at room temperature. The preparation steps are as follows: the emulsified asphalt has good storage stability, and the prepared mortar has good fluidity and no settlement. The preparation steps are as follows:

[0042] ① Turn on the steam heating system, heat the No. 90 heavy traffic road asphalt to 130°C-160°C with the coil heating system in the ground tank to melt, use the pump to pump the asphalt to the batching tank, and heat the asphalt with the stated ratio to the batching tank for batching The tank is equipped with steam heating equipment, the temperature control parameters are set through the PLC control system, and the asphalt tempera...

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Abstract

The invention discloses emulsified asphalt and a preparation method thereof. The emulsified asphalt comprises the following components in percent by weight: 60 to 65 percent of asphalt, 1.0 to 4.0 percent of complex emulsifier, 0.04 to 0.4 percent of stabilizing agent, 0.05 to 0.2 percent of thixotropic agent, 0.1 to 4 percent of aid and the balance of water. The emulsified asphalt for CRTS II type slab ballastless track cement-emulsified-asphalt mortar solves the main problems of poor stability, short available time, poor temperature adaptability, easy delamination and the like of the emulsified asphalt in the prior art. By adopting technology of complexing the emulsifier, various stabilizing agents are added, so the emulsified asphalt has the advantages of good emulsifying effect, good storage stability, good temperature adaptability of prepared cement-emulsified-asphalt mortar, long available time and no delamination, and can completely meet the requirement of cement-emulsified-asphalt mortar for ballastless track cushion of high speed railways.

Description

technical field [0001] The invention belongs to the technical field of mortar for slab ballastless track pad foundation of high-speed railways, in particular to emulsified asphalt used in cement emulsified asphalt mortar adjustment layer of CRTS II slab ballastless track and a preparation method thereof. Background technique [0002] Due to high-speed railways' requirements for high ride comfort and high stability, countries all over the world adopt slab ballastless track structures. Ballastless track is the key technology of high-speed railway. It is composed of subgrade, road slab and cement emulsified asphalt mortar layer between them. Cement emulsified asphalt mortar layer is a semi-rigid body gelled between cement-based and asphalt-based materials Materials play an important role in ballastless track construction. The main classification is CRTS I type slab ballastless track and CRTS II type slab ballastless track. [0003] Emulsified asphalt is one of the key compone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L71/00C08L1/00C08K3/36C04B26/26
Inventor 糜万俊陈庆徐小云季永莉肖强飞熊兆松阚大清
Owner 江苏华宇铁路新材料有限公司
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