The adhesion between the wheels of a locomotive and the rails of the railroad track.


Related Terms

INKOMETER

An instrument for measuring adhesion of liquids by rotating drums in contact with the liquid.

AGGLOMERATION

The potential of the system for particle attraction and adhesion.

ADHESION

The property of a lubricant that causes it to cling or adhere to a solid surface.

ADSORPTION

Adhesion of the molecules of gases, liquids, or dissolved substances to a solid surface, resulting in relatively high concentration of the molecules at the place of contact; e.g. the plating out of an anti-wear additive on metal surfaces.

EPOXY RESIN

A type of resin used in glass fibre construction or for gluing where waterproofing is required It is durable, strong and has good adhesion qualities; more expensive than the polyesters.

BOND STRENGTH

The amount of adhesion between bonded surfaces measured in terms of the stress required to separate a layer of material from the base to which it is bonded.

PERMISSIVE BLOCK SYSTEM

A block system in which a railroad train is permitted to enter a block section already occupied by a train.

LOADING RACK

The shelter and associated equipment for the withdrawal of liquid petroleum or a chemical product from a storage tank and loading it into a railroad tank car or tank truck.

LAP SIDING

1. Beveled boards used for siding that are similar to clapboards but longer and wider. 2. Two railroad sidings, the turnout of one overlapping that of the other.

LADDER TRACK

A main track that joins successive body tracks in a railroad yard.

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