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Quantitative test method for quality of high speed railway bituminous mortar construction

A quantitative detection method, asphalt mortar technology, applied in the direction of applying repeated force/pulsation force to test the strength of materials, roads, measuring instruments, etc., can solve problems such as inability to monitor health, and achieve the effect of controlling the quality of perfusion

Active Publication Date: 2012-06-27
常熟紫金知识产权服务有限公司
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  • Abstract
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Problems solved by technology

Peel-off test also cannot monitor post-run health

Method used

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  • Quantitative test method for quality of high speed railway bituminous mortar construction
  • Quantitative test method for quality of high speed railway bituminous mortar construction
  • Quantitative test method for quality of high speed railway bituminous mortar construction

Examples

Experimental program
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Embodiment Construction

[0019] The present invention will be further introduced below in conjunction with the detailed embodiments shown in the accompanying drawings.

[0020] 1. Detection of bonding strength and bonding stiffness along the running direction

[0021] 1. Preset

[0022] (1) Set a concrete cap (1m×1m×1.5m) at the end of the slab, and reserve 4-6 riveting holes.

[0023] (2) Install the reaction frame on the concrete bearing platform through the reserved holes, and install the hydraulic jack on the reaction frame through bolts. During this installation process, it is necessary to ensure that the hydraulic jack is perpendicular to the loading surface of the track slab and the loading point is at At the midpoint of the track plate (loading side), paste a steel plate with a thickness of 1-2cm to prevent the track plate from being damaged due to local stress concentration during the loading process. The surface area of ​​the steel plate should be slightly larger than the pressure head of t...

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Abstract

The invention provides a quantitative test method for the quality of high speed railway bituminous mortar construction. A detection test can quantitatively count the bonding strength and the bonding rigidity of the bituminous mortar of a track slab along the traveling direction of a train, the bonding strength and the bonding rigidity of the bituminous mortar along the side direction of the planeof the track slab, and the plainness index of the track slab under the function of eccentric load. The method not only can effectively control the pouring quality of the bituminous mortar, but also can periodically monitor the health of a railway system by quantitatively testing the bonding force and the bonding rigidity of the bituminous mortar along the side direction of the track slab.

Description

Technical field: [0001] The invention belongs to the technical field of civil engineering, in particular to a method for detecting the construction quality of an asphalt mortar layer between a high-speed railway track slab and a base. Background technique: [0002] Asphalt mortar is mainly composed of cement, asphalt emulsion and fine aggregate. During the construction of high-speed railways, asphalt mortar is poured between the track slab and the concrete base to transfer the load and fill the gap between the track slab and the concrete base. The asphalt mortar bond between the seats transfers the load of the train to the track slab to the foundation. ② To improve the flatness of the track, inject asphalt mortar between the track slab and the base, which can fill the gap between the track slab and the base and play the role of an elastic cushion. The quality of the asphalt mortar layer directly affects the stability and durability of the entire track system, and it is one...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/32E01B35/12
Inventor 何真张博胡曙光徐建军李民领
Owner 常熟紫金知识产权服务有限公司
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