Prediction method of cement asphalt mortar compressive strength

A technology of compressive strength and cement asphalt, applied in the field of prediction of compressive strength of cement asphalt mortar, can solve the problems of long period of compressive strength of CA mortar, and achieve the effect of accurate compressive strength and high reliability

Active Publication Date: 2013-06-19
JIANGSU SOBUTE NEW MATERIALS
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of long period of testing the compressive strength of CA mortar, avoid the trouble of waiting for the test period, and provide a convenient and quick method. The method of directly calculating the strength of cement asphalt mortar through the parameters of the mix ratio is known. In the case of the mix ratio, the compressive strength of CA mortar can be known

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  • Prediction method of cement asphalt mortar compressive strength
  • Prediction method of cement asphalt mortar compressive strength
  • Prediction method of cement asphalt mortar compressive strength

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Embodiment Construction

[0017] The invention will be further described below in conjunction with the description, but the scope of protection required by the present invention is not limited to the scope described in the embodiments.

[0018] The types and strength grades of cement used in each embodiment, the types of asphalt used to prepare emulsified asphalt, and the amounts of various components are shown in Table 1.

[0019] Table 1 Experimental Raw Materials and Mixing Ratio

[0020]

[0021]

[0022] Note: m s is the quality of the sand.

[0023] In the specific implementation process of the following examples, two calculation parameters m will be converted according to the mix ratio provided in Table 1 W / m C 、m A / m C included in the corresponding table.

[0024] Taking Examples 1-13 as an example, the measured value of the 28d compressive strength of Onoda PII52.5 cement is 57.2MPa, the measured value of the 28d compressive strength of Conch PII52.5 cement is 55.2MPa, and the me...

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Abstract

Provided is a prediction method of cement asphalt mortar compressive strength. The method aims at shortening an ensured cement asphalt (CA) mortar proportioning cycle, and through a mechanism study and an experimental analysis, parameters which can hardly affect the strength are emitted. A mass ratio mW/mC of water use amount and cement use amount and a mass ratio mA/mC of asphalt use amount and the cement use amount are used as calculating parameters which finally can be used for quantitatively calculating the compressive strength of the CA mortar. According to the method, through utilization of the parameters provided by the CA mortar mix ratio, 28d compressive strength of the CA mortar can be conveniently and quickly predicted, and a prediction result has good reliability.

Description

technical field [0001] The invention relates to a method for predicting the compressive strength of the cement asphalt mortar, that is, the 28d compressive strength of the cement asphalt mortar is calculated according to the mixing ratio of the cement asphalt mortar. Background technique [0002] Cement-asphalt mortar (CA mortar) is a key material in the construction of high-speed railways, which plays an important role in adjusting track construction errors and improving the safety and comfort of trains at high speeds. Compressive strength is the most basic mechanical property index of cement asphalt mortar and the basis of all other properties. The compressive strength of a cement-asphalt mortar can only be determined after a 28-day test period. If the 28-day compressive strength cannot meet the index requirements, it is necessary to adjust the mix ratio before conducting the next 28-day cycle test, and how to adjust the mix ratio is not easy to grasp direction, so severa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/38
Inventor 刘加平万赟洪锦祥周伟铃缪昌文黄冲刘志飞徐静朱晓斌
Owner JIANGSU SOBUTE NEW MATERIALS
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