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Cement asphalt (CA) mortar for polymer cement substrate type ballastless track and preparation method thereof

A technology of emulsified asphalt and ballastless track, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc. The effect of improving the quality of mortar, facilitating construction, and overcoming errors

Inactive Publication Date: 2011-03-30
卢建华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an emulsified asphalt mortar for polymer cement substrate type ballastless track to solve the problems of poor fluidity, short working time, complex use method, harsh construction technology and inconvenient transportation of the existing CA mortar, so as to meet the High-volume application requirements for high-speed railways

Method used

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  • Cement asphalt (CA) mortar for polymer cement substrate type ballastless track and preparation method thereof
  • Cement asphalt (CA) mortar for polymer cement substrate type ballastless track and preparation method thereof
  • Cement asphalt (CA) mortar for polymer cement substrate type ballastless track and preparation method thereof

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Experimental program
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Effect test

Embodiment 1 Embodiment 6

[0050] An emulsified asphalt mortar for polymer cement substrate type ballastless track, a mixture composed of CA mortar dry powder, CA mortar emulsion and water in the following proportions, the content of each component in the mixture is calculated in parts by weight:

[0051] CA mortar dry powder 100 parts by weight

[0052] CA mortar emulsion 50-55 parts by weight

[0053] 4-8 parts by weight of water

[0054] The above-mentioned dry powder of CA mortar is a mixture (parts by weight) of the following components:

[0055] Cement 0.846 parts

[0056] Expanding agent 0.070 parts

[0057] 0.027 parts of cement accelerator

[0058] Defoamer 0.00053 parts

[0059] Superplasticizer 0.010 parts

[0060] Fine sand 2.183 parts

[0061] The dry powder of CA mortar is a prepared mixture produced in the factory and delivered to the construction site in bags or in bulk.

[0062] The above-mentioned CA mortar emulsion is a composite emulsion composed of anionic emulsified asphalt...

Embodiment 7 Embodiment 12

[0076] The CA mortar dry powder of various proportions in the emulsified asphalt mortar for the polymer cement substrate type ballastless track of the present invention is composed of cement, expansion agent, cement quick-setting agent, defoamer, high-performance water reducer, fine sand , lignocellulose and the mixture that cellulose ether forms, each component content in the mixture of each embodiment is calculated as by mass parts:

[0077] Cement 0.8~0.88 parts

[0078] Expansion agent 0.065~0.085 parts

[0079] Cement quick-setting agent 0.01~0.04 parts

[0080] Defoamer 0.0005~0.0010 parts

[0081] High performance water reducing agent 0.008~0.012 parts

[0082] Fine sand 2.00~2.40 parts

[0083] Lignocellulose 0~0.0014 parts

[0084] Cellulose ether 0~0.0004 part

[0085] In each of the above embodiments, the cement is 425 early-strength ordinary Portland cement. It provides rigidity to the CA mortar and accelerates the CA mortar emulsion from the CA mortar pouri...

Embodiment 19

[0107] The preparation method of emulsified asphalt mortar for polymer cement substrate type ballastless track of the present invention, it comprises the following steps:

[0108] A. Material preparation: According to the total weight of CA mortar to be used, prepare CA mortar dry powder, CA mortar emulsion and water according to the following proportions:

[0109] CA mortar dry powder 100 parts by weight

[0110] CA mortar dry powder 100 parts by weight

[0111] CA mortar emulsion 50-55 parts by weight

[0112] 4-8 parts by weight of water

[0113] B. Put the water and CA mortar emulsion measured in proportion into the mixer at the same time or successively, start the mixer and stir for 3 minutes:

[0114] C. Put the measured CA mortar dry powder into the mixer. The time from the start of feeding to the completion of feeding should not exceed 10 minutes, and stir for 3 to 5 minutes after feeding;

[0115] D. Finished CA mortar inspection: use J-shaped funnel to inspect CA...

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Abstract

The invention discloses cement asphalt (CA) mortar for a polymer cement substrate type ballastless track and a preparation method thereof, and relates to a building material for pouring the track bed of a high speed railway and a production method thereof. The CA mortar is a mixture which is formed by mixing CA mortar dry powder, CA mortar emulsified asphalt and water in the weight part ratio of 100:(50-55):(4-8), wherein the CA mortar dry powder is a mixture which consists of cement, an expansion agent, a cement quick setting agent, an antifoaming agent, a high-performance water reducer, fine sand, lignocellulose and cellulose ether; and CA mortar emulsion is slow-breaking slow-setting anionic emulsified asphalt and acrylic latex composite emulsion. The production method of the CA mortar comprises the following steps of: preparing materials, stirring the mortar emulsion and the water, adding the mortar dry powder, stirring, checking and the like. The CA mortar rubber powder and the CA mortar emulsion for producing the CA mortar are industrially produced, and the product quality is stable; the CA mortar is convenient to process and transport; and the preparation process does not have a strict stirring and charging sequence, so that the construction is convenient and quick.

Description

technical field [0001] The invention relates to a building material and a manufacturing method thereof, in particular to a CA mortar for a slab-type ballastless track suitable for pouring high-speed railway track subgrades and ballast beds. Background technique [0002] With the continuous development of economic construction, my country's railway passenger transport is developing towards high speed. Railways with a maximum operating speed of more than 200 kilometers per hour are called high-speed railways. High-speed railway tracks put forward high requirements for roadbeds and ballast beds. To ensure the strong stability and high smoothness of the track, it is a trend to adopt the structural form of the slab ballastless track. The elastic layer of the slab ballastless track structure is Cement Asphalt mortar, referred to as CA mortar, which is an elastic subgrade material composed of asphalt mixed with several other polymer materials. It is a key component of the ballastles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/02C04B7/02C04B22/008C04B26/26Y02W30/91C04B14/06C04B18/24C04B20/0092C04B24/12C04B24/121C04B24/2641C04B24/36C04B24/383C04B40/0028C04B2103/12C04B2103/302C04B2103/50C04B14/303C04B18/08C04B18/146C04B22/0093C04B22/064C04B22/126C04B22/142C04B22/148C04B24/02C04B24/045
Inventor 卢建华
Owner 卢建华
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