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Vertical connected plate type unballasted track cement emulsified bitumen mortar

A technology of cement emulsified asphalt and slab ballastless track, which is applied in the field of cement emulsified asphalt mortar, can solve the problems of complex environment and climatic conditions, and German technology cannot fully adapt to the environment and climatic conditions

Active Publication Date: 2009-07-08
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although high elastic modulus cement-emulsified asphalt mortar has been applied in the Beijing-Tianjin intercity railway, it has followed the German technical route and performance index system. However, my country has a vast territory, complex environment and climatic conditions, and has relatively large gaps compared with Germany. German technology cannot fully adapt to my country's track structure and different environmental and climatic conditions

Method used

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  • Vertical connected plate type unballasted track cement emulsified bitumen mortar
  • Vertical connected plate type unballasted track cement emulsified bitumen mortar
  • Vertical connected plate type unballasted track cement emulsified bitumen mortar

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Experimental program
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Embodiment 1-3

[0057] The proportioning of the cement emulsified asphalt mortar of embodiment 1-3, the composition and proportioning of dry material adopted, the composition and proportioning of emulsified asphalt adopted are shown in table 6, table 7, table 8 and table 9 respectively .

[0058] The preparation method of the cement emulsified asphalt mortar of embodiment 1-3 is as follows:

[0059] Add the emulsified asphalt into the propeller mixer with adjustable speed, stir at a low speed (20rpm) for 5s, then add water, water reducer and defoamer in turn, stir at a low speed (20rpm) for 5s, then add the dry material, and then With the increase of the amount of dry material added, the rotation speed of the agitator was gradually increased to 700rpm.

[0060] After all the dry materials are added, stir rapidly (rotating speed 700rpm) for 60s, then stir at low speed (rotating speed 100rpm) for 120s to obtain cement emulsified asphalt mortar.

[0061] The dry material used can be prepared b...

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Abstract

The invention relates to a cement emulsified bitumen mortar for vertical connecting plate type ballastless rails, which comprises the following components in portion by weight: 1,370 to 1,516 portions of dry material, 230 to 270 portions of emulsified bitumen, 0 to 68 portions of polymer emulsion, 162 to 210 portions of water, 0.5 to 5 portions of water reducing agent, and 0 to 4 portions of antifoaming agent. The cement emulsified bitumen mortar has the advantages of good environment adaptability and working performance, agreeable mechanical property, small shrinkage, good crack resistance and superior lasting quality, is the cement emulsified bitumen mortar with high elasticity modulus, and can satisfy the requirements on different construction and use environmental conditions of the vertical connecting plate type ballastless rails for high speed railways and passenger dedicated lines in China.

Description

technical field [0001] The invention relates to a cement-emulsified asphalt mortar, in particular to a cement-emulsified asphalt mortar used for a longitudinally connected slab-type ballastless track, and belongs to the field of slab-type ballastless track construction. Background technique [0002] Slab ballastless track is one of the main structural types used in the construction of high-speed railways and passenger dedicated lines in my country. The slab ballastless track structure is mainly composed of rail fasteners, prefabricated track slabs, cushions, concrete bases (or hydraulic support layers) from top to bottom. Among them, the cushion is a key structural part, and its main functions are filling, supporting, bearing, transmitting, and providing proper elasticity and toughness. direct impact. At present, among the cushion materials at home and abroad, cement emulsified asphalt mortar is the most widely used. [0003] There are mainly two types of slab ballastless...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B14/06C04B22/04C04B16/06C04B16/02
CPCC04B2111/34C04B2111/503C04B26/26C04B28/00C04B2111/0075C04B2111/2038C04B2111/343Y02W30/91C04B7/00C04B14/02C04B14/06C04B16/0641C04B16/0658C04B18/24C04B22/04C04B24/24C04B38/02C04B2103/302C04B2103/50C04B24/36
Inventor 曾志郑新国翁智财谢永江刘竞仲新华王月华
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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