Screed

About: Screed is a research topic. Over the lifetime, 1899 publications have been published within this topic receiving 11118 citations.

Nelson stud screed post assembly

Abstract: A screed post assembly which may be easily and quickly interfaced to a Nelson stud extending upwardly from a horizontal support beam used in the construction of a building framework. The screed post serves as a support for a screed support system which is used to conduct a leveling operation for a concrete pour during the formation of a composite deck. The screed post assembly is also adapted to be extendable over a rebar member and used in the assembly of a protection device which covers the top, exposed ends of a plurality of linearly aligned, upwardly extending rebar members.

Paver having an improved material hopper and loader for same

Abstract: A paver and a corresponding loader each have a chassis ( 1 ) which is provided, at the front in the paving direction, with a hopper ( 8 ) for receiving material to be paved and, at the rear, with a floating screed ( 4 ), a longitudinal conveyor device ( 7 ) being provided between the hopper ( 8 ) and a distributor auger ( 6 ) located in front of the screed ( 4 ) in the paving direction, the hopper ( 8 ) being open towards the longitudinal conveyor device ( 7 ) and including two hopper halves ( 9 ) which are each pivotable about an axis ( 21 ) extending adjacently to the longitudinal conveyor device ( 7 ) in the paving direction. Further, in each of the hopper halves ( 9 ) is provided a lateral conveyor device ( 12 ) which is drivable by a drive ( 13 ), is arranged on the bottom side and extends as far as the longitudinal conveyor device ( 7 ), those bottom portions ( 14, 19 ) of the hopper halves ( 9 ) which remain with regard to the respective lateral conveyor device ( 12 ) being tiltable relative to the lateral conveyor device ( 12 ).

Lightweight, portable vibratory screed

Abstract: The screed includes an elongated blade vibrated by a centrally located, eccentric weight. The blade is supported by an elongated shaft extending to a power source that drives the weight. An associated operator handle facilitates convenient manipulation of the screed. A unique vibration dispersion system enables the centrally located weight to effectively vibrate the entire blade length. The dispersion system includes an elongated, rigid integral brace extending the entire blade length. The brace secures to the eccentric weight via a vibratory housing. Vibrations from the housing force the blade to vibrate violently to consolidate the plastic concrete. As the screed is drawn across wet plastic concrete, it simultaneously consolidates the concrete by vibrating it thoroughly throughout the monolith while also striking off and levelling the top layer of the concrete. The screed includes a pivoting kickstand that enables the operator to quickly release the screed without significant departure from the present screed angle and without requiring engine shut-off. During use, the operator may deploy the kickstand and then simply drop the screed handles to engage the kickstand and thereby support the screed on both the kickstand and the blade. The entire handle assembly is preferably adjustable to accommodate operators of varying heights as well as various depths of concrete. The vibratory dispersal system includes a multiple component clamp that secures the blade to the vibratory assembly to transfer vibrations from the eccentric weight across the blade. Central portions of the brace are captivated by respective clamp sections.

Leveling means or mechanism for road surfacing machines

Abstract: The present invention relates to leveling means or mechanism for road surfacing machines. It has to do particularly, although not exclusively, with transverse leveling means or mechanism which may be mounted upon or attached to the leveling and finishing unit or assembly which includes a screed,...

Vibratory hand screed

Abstract: This invention relates to improvements in vibratory hand screeds. The main objects of this invention are: First, to provide a vibratory hand manipulated screed which is highly desirable for the laying of concrete, factory floors, bridge decks, sidewalks, and the like where low slump or concrete...