Topic
Screed
About: Screed is a research topic. Over the lifetime, 1899 publications have been published within this topic receiving 11118 citations.
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Patent•
17 Jun 2002
TL;DR: In this article, a subgrade preparation apparatus is used to level, accurately grade and compact a sub grade surface for receiving a preformed concrete slab on the subgrade, in order to repair a concrete surface.
Abstract: A subgrade preparation apparatus is operable to level, accurately grade and compact a subgrade surface for receiving a preformed concrete slab on the subgrade, in order to repair a concrete surface. The subgrade preparation apparatus includes a base unit, an extendable boom extending from the base unit, and a screed head assembly vertically adjustable on the extendable boom. The base unit is positionable on the concrete surface being repaired. The screed head assembly is vertically adjustable to be lowered into a cut out area defining the subgrade. Preferably, the screed head assembly includes a plow, auger and/or vibrator for grading, leveling and/or compacting the subgrade surface, and is further operable to grade, level, compact and/or smooth the subgrade surface close to the edges or walls of the cut out area.
9 citations
Patent•
15 Jun 2011
9 citations
Patent•
16 Dec 2015
TL;DR: In this paper, the utility model discloses a porous pavement structure is by going including roadbed, bed course, basic unit, screed -coat and surface course, the one end of roadbed is equipped with the ditch, and one side top that the bed course is close to the ditch is connected with the curb, and the basic unit passes through the drain pipe near one side of curb and is attached with the drain, the thickness of bed course was 100 -150mm, and basic unit was 80 -200mm, the width of screed-coat was 30 -
Abstract: The utility model discloses a porous pavement structure is by going including roadbed, bed course, basic unit, screed -coat and surface course, the one end of roadbed is equipped with the ditch, and one side top that the bed course is close to the ditch is equipped with the curb, and the basic unit passes through the drain pipe near one side of curb and is connected with the ditch, the thickness of bed course is 100 -150mm, and the thickness of basic unit is 80 -200mm, and the thickness of screed -coat is 30 -50mm, and the thickness of surface course is 60 -80mm. The utility model discloses the raw aggregate again that utilizes building waste processing to obtain, lay obtain one kind high permeate water, gao baoshui's porous pavement structure, has not only solved building waste and has dealt with the problem, can provide a large amount of building material again, energy problem, environmental challenge and the social concern of avoiding the exploitation of lithotome resource to bring simultaneously help adjusting city earth's surface humiture.
9 citations
Patent•
17 Feb 1987
TL;DR: A vibratory concrete screed composed of a plurality of interconnected sections is described in this article, where each section includes a series of frame members which are located at an acute angle with respect to the longitudinal axis of the section.
Abstract: A vibratory concrete screed composed of a plurality of interconnected sections. Each section includes a series of frame members which are located at an acute angle with respect to the longitudinal axis of the section. Each frame member is generally triangular in configuration and is composed of a base and a pair of sides which are connected together at an apex. The ends of the bases of the frame members are connected to a pair of parallel screed plates, while a ridge tube is connected to the apices of the frame members. The ridge tubes of adjacent sections are connected together by an adjustable connecting mechanism, and axial adjustment of the ridge tubes will tend to tilt the screed plates of one section relative to the adjacent section to provide the desired crown for the screed. The central portion of the base of each frame member is provided with a tubular hub and in one embodiment, the aligned hubs receive an eccentric shaft that is operably connected to an engine to provide vibratory motion for the screed. In another form of the invention, an air supply tube is mounted within the aligned hubs, and conduits serve to supply air under pressure from the supply tube to individual pneumatic vibrators mounted along the length of the screed.
9 citations
Patent•
04 Aug 1992
TL;DR: In this paper, the primary support members are placed into the ground in which the structure is to be built at predetermined intervals, spanning the gap between support members by pre-cast reinforced concrete beams (14) of generally inverted T-shape and predetermined length and building, for example, a double skin wall (42,44) on the outer flange (22) and top of the beam while the inner flange supports a floor slab of beams (40) blocks (46) and screed (48) and abuts the inner face (31) to resist inward lateral movement thereof
Abstract: A building method avoiding the use of traditional excavated foundation comprises placing primary support members (10) into the ground in which the structure is to be built at predetermined intervals, spanning the gap between support members (10) by pre-cast reinforced concrete beams (14) of generally inverted T-shape and predetermined length and building, for example, a double skin wall (42,44) on the outer flange (22) and top of the beam while the inner flange (22) supports a floor slab of beams (40) blocks (46) and screed (48) and abuts the inner face (31) of the upright of the beam to resist inward lateral movement thereof.
9 citations