Screed

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

Foundation sill screed having tapering thickness vertical flange and alignment guide in front face of vertical flange for alignment of screed with respect to sill plate line

Abstract: A foundation sill screed with a vertical flange having a top end and a bottom end and a thickness that is tapered from a minimum at the top end to a maximum at the bottom end. The foundation sill screed includes a first leg extending downwardly and outwardly from the bottom end of the vertical flange, a second leg extending downwardly and inwardly from the stucco ledge, and a lip extending downwardly and inwardly from the inwardly extending member. The foundation sill screed includes a floor line alignment guide extending longitudinally along the vertical flange to provide accurate positioning of the foundation sill screed with respect to the sill plate of a building in order to properly protect the sill plate against moisture penetration and pest infestation.

Pavement recycling machine and method of recycling pavement

Abstract: A pavement recycling assembly includes a frame defining a grinding chamber and a mixing chamber. The grinding chamber carries a rotatable laterally-extending toothed grinding drum and the mixing chamber houses at least one toothed rotatable mixing wheel. A screed assembly is disposed behind the mixing chamber for extruding said mixture at a desired height so as to form a pavement. Pavement is recycled in-situ using the recycling assembly by grinding existing pavement, adding fluid asphalt to the pavement, optionally adding supplemental pavement, and mixing the fluid asphalt with the existing and/or supplemental pavement. The mixture is then extruded at the proper height by an adjustable screed. The recycling assembly may be suspended under a self-propelled chassis so that it can be shifted laterally to engage a pavement surface selected for repair without moving the entire chassis.

Transducer arrangement for screed control

Abstract: A transducer arrangement and method that generates control signals indicating relative positions of the ends of a hydraulically movable screed head. The generated control signals of the present invention are used by a conventional control circuit controlling the hydraulically movable screed head with laser receivers in a column block situation, which interrupts the reception of a laser beam from a laser transmitter by one of the laser receivers, to provide an estimated absolute position of the interrupted receiver side of the screed head until the column block situation clears. Normally, absolute measurements are available on both sides of the screed head via the laser receivers receiving the laser beam. The transducer arrangement of the present invention provides an additional control signal that in a column blocked situation the control system uses to maintain a relative elevation position of the interrupted receiver side to the absolute position of the uninterrupted receiver side until both receiver can reacquire the elevational reference of the laser transmitter.

Concrete slab foundation forming devices

Abstract: An assemblage which forms in-situ monolithic concrete slab-on-grade foundations is an internally collocating monolithic forming unit, which unit is typically light weight enough to be maneuvered intact. The unit is comprised of a number of form members and an overhead screed. The concrete-surface-defining form members, preferably sections of light-gage cold-formed metal, also serve as struts defining foundation horizontal geometry by having controlled lengths and interconnections. Corresponding pairs of squaring wires control geometry as well, and are removed before finishing the concrete slab. Temporary support of the forming unit is upon coarsely threaded stakes. Each stake screws into earth with a high speed pneumatic impact wrench, and quickly secures simple form support components such as a slab clip. Resulting connections provide subsequent adjustment of any form member independently, or the entire forming unit simultaneously, in any direction or rotation before securing it into place, and pouring a slab on grade foundation.

Wire mesh screed

Abstract: This invention relates to screed methods and building panels. According to the invention there is provided a construction panel comprising two outer wire mesh members and a middle member secured therebetween. The wire mesh members may have a plurality of V-shaped impressions along their length which serve as a built in visual and mechanical screed for finishing the panel with shotcrete or plaster. Alternatively, the wire mesh members may have a clipped-on-screed member attached thereto which serves as a visual and mechanical screed for finishing the panel. The middle member may comprises a composite of alternating layers of wire trusses and polystyrene foam. The middle member may be secured in a compressed state and released after attachment to the wire mesh members.