Screw spike anchoring agent

A technology of spiral spikes and anchoring agents, applied in the field of anchoring materials, can solve problems such as volume shrinkage, sleeper damage, excessive temperature difference of sleepers, etc., and achieve the effects of improved durability, extended service life, and high early strength

CN101219874BActive Publication Date: 2011-08-31SHANDONG DAYUAN IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2011-08-31

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Abstract

The invention relates to an anchor agent for screw spikes, comprising cement, sand, fly ash and mixing liquid; in the anchor agent, the cement causes the combination between the anchor agent and walls of sleeper holes to be closer, improves the compressive resistance and flexural strength as well as anti-pulling force in a short time, and meets the construction requirements; the fly ash increasesthe porosity among each material and enhances density of the material; the durability indexes such as harmful ions erosion resistance, loss resistance of dynamic elastic modulus in freezing and thawing, and rust and corrosion resistance for protecting steel bars are greatly improved, and the service life are prolonged; waterproof agent of polymer concrete, which has good hydrophobic performance to prevent water from entering, does not contain water itself and no conductive irons of free state are formed, thus achieving excellent insulation performance; the anchor agent has the advantages of high early strength, and no temperature environmental affection.
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Description

technical field

[0001] The invention relates to an anchoring material in railway construction, in particular to an anchoring agent for anchoring spiral spikes on railway concrete sleepers. Background technique

[0002] At present, the spikes on the railway sleepers are generally anchored with sulfur anchoring agent. When using sulfur anchoring agent to anchor road studs, it needs to be boiled at high temperature. Sulfur anchoring agent will produce thick smoke and poisonous gas, which will endanger the health of construction workers and pollute the environment. The pullout force of sulfur anchoring agent after anchoring is generally 60KN. The fatigue resistance is generally 2 million load cycles, and the wet insulation resistance is 1.2×10 5 Ω. What's more serious is that the volume of sulfur shrinks during the process of melting, cooling, and solidification, and it is easy to cause gaps between the sulfur and the walls of the reserved holes of the road stud, which affects...

Examples

Embodiment 1

[0023] Embodiment 1, spiral road stud anchoring agent, the weight proportion (by weight) of each component is: the Portland cement 30kg that label is 32.5, the sand 20kg that particle diameter is below 2mm, tertiary fly ash 30kg, Weifang Dayuan Industrial Co., Ltd. produces 20kg of polymer concrete waterproofing agent with a concentration of 9mol / L, which is mixed to form a fluid spiral spike anchoring agent.

[0024] The following table is the compressive and flexural strength data (MPa) obtained by the test of the road stud anchoring agent in this embodiment under different temperature conditions:

[0025]

[0026] The following table is the test result of the loss of dynamic modulus of the road stud anchoring agent before and after the freeze-thaw cycle in this embodiment:

[0027] Dynamic modulus before freeze-thaw cycles

Modulus of elasticity after freeze-thaw cycles

Specimen parameters

number

width

100mm

Specimen ...

Embodiment 2

[0044] Embodiment 2, spiral road stud anchoring agent, the weight proportion (by weight) of each component is: the portland cement 25kg that label is 32.5, the sand 25kg that particle diameter is 0.5mm~3mm, secondary fly ash 30kg, 20kg of polymer concrete waterproofing agent with a concentration of 9mol / L produced by Weifang Dayuan Industrial Co., Ltd., after mixing to form a fluid spiral spike anchoring agent.

[0045] The following table shows the compressive and flexural strength data (MPa) of the road stud anchoring agent in the above embodiment under different temperature conditions:

[0046]

[0047] The following table is the test results of the loss of dynamic modulus of the road stud anchoring agent before and after the freeze-thaw cycle of the above embodiment:

[0048] Dynamic modulus before freeze-thaw cycles

Modulus of elasticity after freeze-thaw cycles

Specimen

parameter

width

100mm

Specimen

parame...

Embodiment 3

[0064] Embodiment 3, spiral road stud anchoring agent, the weight ratio (by weight) of each component is: 30kg of Portland cement with a label of 42.5, 20kg of sand with a particle size below 1.25mm, and 30kg of first-grade fly ash 1. Weifang Dayuan Industrial Co., Ltd. produces 20kg of polymer concrete waterproofing agent mixing solution with a concentration of 9mol / L, which forms a fluid spiral spike anchoring agent after mixing.

[0065] The following table shows the compressive and flexural strength data (MPa) of the road stud anchoring agent in the above embodiment under different temperature conditions:

[0066]

[0067] The following table is the test results of the loss of dynamic modulus of the road stud anchoring agent before and after the freeze-thaw cycle of the above embodiment:

[0068] Dynamic modulus before freeze-thaw cycles

Modulus of elasticity after freeze-thaw cycles

Specimen

parameter

width

100mm

Sp...