Screw spike anchoring agent

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.

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...

AI Technical Summary

Problems solved by technology

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 during the process of melting, cooling, and solidification, sulfur shrinks in volume, which may easily cause gaps with the walls of the reserved holes of road studs, affecting the bonding performance.

In addition, when pouring with high-temperature sulfur anchoring agent, it will also cause the local temperature difference of the sleeper to be too large and cause cracks, which will cause the hidden danger of the sleeper being damaged and affect the driving safety.

Moreover, when the sulfur anchoring agent is constructed on site, it is first necessary to purchase pots, stoves, and fuel for boiling sulfur, which is inconvenient for construction, affects the construction progress, and has low construction efficiency.

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