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High speed railway bridge bearing anchoring mortar material

A bridge support and mortar material technology, applied in the field of building materials, can solve the problems of poor perfusion filling performance, insufficient one-day flexural strength, and insufficient hourly strength, etc., to achieve improved appearance, good filling performance, and simple use methods Effect

Active Publication Date: 2012-02-15
ANHUI ZHONGTIE ENGINEER MATERIAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the literature searched, there are few relevant research reports on mortars that can simultaneously take into account high fluidity, ultra-early strength, micro-expansion, late-stage strength stability and durability
Moreover, most of the existing related products on the market have shortcomings such as low fluidity, poor perfusion filling performance, insufficient hourly strength after hardening, insufficient one-day flexural strength, and late strength shrinkage.

Method used

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  • High speed railway bridge bearing anchoring mortar material
  • High speed railway bridge bearing anchoring mortar material
  • High speed railway bridge bearing anchoring mortar material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]

[0033] Wherein, the admixture is an equal mass mixture of silica fume and fly ash, the retarding component is a mixture of sodium gluconate and boric acid, the mass ratio of the two is sodium gluconate: boric acid=1: 1, and the early strength component It is a mixture of aluminum sulfate and lithium carbonate, and the mass ratio of the two is aluminum sulfate: lithium carbonate=1:1.

[0034] Fully automatic production equipment for dry powder mortar is adopted to automatically weigh each raw material component according to the mix ratio, automatically feed materials, automatically stir evenly, and automatically package them into products.

Embodiment 2

[0036]

[0037] Fully automatic production equipment for dry powder mortar is adopted to automatically weigh each raw material component according to the mix ratio, automatically feed materials, automatically stir evenly, and automatically package them into products.

Embodiment 3

[0039]

[0040] Wherein, retarding component is the mixture of sodium gluconate and citric acid, and the mass ratio of the two is sodium gluconate: citric acid=1: 1, and early strength component is the mixture of sodium sulfate and lithium carbonate, the mass ratio of the two The ratio is sodium sulfate: lithium carbonate = 1:2.

[0041] Fully automatic production equipment for dry powder mortar is adopted to automatically weigh each raw material component according to the mix ratio, automatically feed materials, automatically stir evenly, and automatically package them into products.

[0042] The product performance results of each embodiment are as follows:

[0043]

[0044]

[0045] According to the product properties of the three formulations measured in the table, the properties of the three examples of the mortar can all meet the anchoring mortar materials proposed in the Kejiji [2005] No. 101 document "Temporary Technical Conditions for Basin Rubber Bearings of...

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Abstract

The invention discloses a high speed railway bridge bearing anchoring mortar material with is blended from components of, by weight: 37 to 45% of sulphoaluminate cement, 0 to 8% of Portland cement, 0 to 5% of an addition, 45 to 55% of graded river sand, 0.04 to 0.18% of a solidification retarder, 0.05 to 0.12% of an accelerant, 0.15 to 0.4% of a water reducing component, 0.05 to 0.15% of a defrothing component, and 0 to 0.1% of fiber. The material provided by the invention is specially used in anchoring and grouting of high speed railway bridge pot rubber bearings. The material has characteristics of good fluidity, high early strength, good filling properties, no strength reversing in later stage, low cost, convenient application, and the like. The material also can be applied in large equipment installation and pavement rush-repairing.

Description

technical field [0001] The invention relates to the field of building materials. Specifically, it relates to a super-early-strength micro-expansion anchoring mortar used for the installation of basin-type rubber bearings of high-speed railway bridges. Background technique [0002] In recent years, China's high-speed railway has developed rapidly, especially the mileage of passenger dedicated lines with a speed of more than 350km / h has continued to increase. The construction of passenger dedicated lines has put forward higher requirements for the quality and service life of construction projects. Among them, in order to improve the quality and increase the service life, it is required to use an early-strength inorganic mortar material with better durability in the anchorage construction of the support. [0003] Chinese patent 101486545A discloses an expansion-controllable super-early-strength bearing mortar material and a preparation method thereof. The mortar has the advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/36
Inventor 黄海汪志勇陈娟李龙陈钱宝
Owner ANHUI ZHONGTIE ENGINEER MATERIAL SCI & TECH CO LTD
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