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866 results about "Screed" patented technology

Screed has three meanings in building construction: 1) a flat board (screed board, floating screed) or a purpose-made aluminium tool used to smooth and true materials like concrete, stucco and plaster after it has been placed on a surface or to assist in flattening; 2) a strip of plaster or wood applied to a surface to act as a guide for a screed tool (screed rail, screed strip, screed batten); 3) the material itself which has been flattened with a screed (screed coat). In the UK, screed has also come to describe a thin, top layer of material (traditionally sand and cement), poured in site on top of the structural concrete or insulation, on top of which other finishing materials can be applied, or it can be left bare to achieve a raw effect.

Intelligent GPS (global positioning system) elevation and average thickness control system of floated screed plate paver

InactiveCN102174792AEliminate manual measurement errorsEliminate erection errors of elevation pointsRoads maintainenceScreedGps receiver
The invention provides an intelligent elevation and average thickness control system of a floated screed plate paver, and the system provided by the invention comprises an industrial computer, a measuring type GPS receiver, a distance meter, an inclinometer, a displacement transducer, a velocity transducer, a longitudinal slope instrument and other devices. In a GPS mode, design data is input in advance only, a levelling instrument is not required for measuring the elevation of the original ground, an elevation datum line is not erected, and leveling operation hands are not used at two sides of the paver, so that the elevations of the original ground and a newly paved road surface can be accurately recorded; in a compensating beam mode, measured data are participated in calculation of the average thickness for mileage per millimeter, thus the paved thickness can be recorded accurately; and in a longitudinal slope mode, the actual paved thickness can be recorded accurately on the basis of the traditional control method. In addition, the three operating modes can be converted quickly, thus overcoming the defects at the starting stage of the original compensating beam mode, ensuring continuous paving under the condition of abnormal GPS signals, and realizing flexible conversion under the condition of complicated road condition design.
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