Showing papers on "Screed published in 2007"

Hot-in-place asphalt recycling machine

Abstract: A process and device for the recycling of asphalt including at least one preheater unit. The preheater having a heater, scarifying rakes, and a bin to dispense aggregate. Also include is a recycling machine having a heater, scarifying rakes, a plurality of extension mills, a main mill, as well as a pug mill having first and second downwardly rotating rotors, the pug mill mixes asphalt and liquid additives together to form a homogenous mix; and at least one screed for laying the homogeneously mixed asphalt to grade.

Portable vibratory screed with bubble vial inclination indication system

Abstract: A portable vibratory screed (10) includes a blade (12) that is connected to a handle (28) constructed to be manipulated by an operator. Nodes (112, 113, 115, 116) of minimum vibrational amplitude are formed at specific locations along the length of the blade when the exciter is driven at a rated operating speed. A site level (164) and/or the handle (28) is attached to the blade (12) at or in the vicinity of one or more of these nodes, therefore, is relatively isolated from induced vibrations.

Apparatus and method for endgate with angle adjustment

Abstract: An endgate comprising a mounting bracket adapted to be attached to a screed assembly, a pivoting plate adapted to be pivotally attached to the mounting bracket, a sliding plate, a pavement contacting surface and a support adapted to be pivotally moved with the pivoting plate, a means for applying force to the pavement contacting surface disposed between the support and the sliding plate, a first adjustment means adapted to adjust the amount of force applied by the means for applying force to the pavement contacting surface and a second adjustment means adapted to adjust the angle of the pavement contacting surface. A method comprising providing such an endgate, adjusting the angle of the pavement contacting surface and adjusting the amount of force applied by the means for applying force to the pavement contacting surface.

Case Study-Based Challenges of Quality Concrete Finishing for Architecturally Complex Structures

Abstract: This paper focuses on the procedure utilized in the construction of tilt-up irregular concrete panels that are constructed on-site using concrete slabs and wooden formwork. The case study required high-quality concrete finishing. The erection and installation procedure called for a maximum panel-to-panel joint tolerance of 1.27 cm (0.5 in.) , often 90° joints between panels. To meet precision requirements, the casting slabs were leveled and flattened with laser screed technology and smoothed with chemical solutions. To ensure that the final result met expectations, a mock-up model was built using different types of materials and to simulate site constraints. The architectural design is a composition of precast concrete panels like “Lego” pieces assembled similarly to a jigsaw puzzle. The unique construction process required a state-of-the-art analysis to produce the set quality. Quality conditions as set by the owner included creating a smooth concrete surface on all panels while avoiding damages and redu...

Paving machine having adjustable ballast system and method

Abstract: A paving machine includes a frame having a hopper, a screed and a conveyor to transfer paving material between the hopper and the screed. A ballast system of the paving machine includes an actuator configured to adjust a movable ballast such as a liquid ballast to switch the paving machine between ballast states corresponding to different operating configurations thereof.

Apparatus for improving the control of a concrete screed head assembly

Abstract: A screeding device for screeding a concrete surface includes a support member, a screed head assembly mounted to the support member, and a control. The screed head assembly includes a grade setting device and a vibrating member, and is selectively movable in a screeding direction over and along the concrete surface by the support member. The vibrating member is vibratable to screed the concrete surface as the screed head assembly is moved in the screeding direction over and along the concrete surface. The control is operable to automatically stop vibration of the vibrating member when the support member is not moving the screed head assembly in the screeding direction and to automatically vibrate the vibrating member when the support member moves the screed head assembly in the screeding direction.

Concrete dispensing apparatus for pre-cast concrete forms

Abstract: A concrete dispensing apparatus is used in a manufacturing process for producing pre-cast concrete structures, which are conventionally used to form a foundation for a residential or commercial building. The dispensing apparatus includes a hopper that funnels to a discharge opening extending along the entire transverse length of the dispensing apparatus. A plurality of individually controlled gates cover the entire discharge opening for selectively controlling the length and location of the discharge opening through which concrete is dispensed. The dispensing apparatus also includes a finishing mechanism including a vibratory screed and a rotational finishing roller. The form can be moved relative to the dispensing apparatus or vice versa. A form vibrator induces a vibratory motion into the form to remove air from the dispensed concrete mixture. Operative control is accomplished through an operator control panel operable to control a hydraulic system powering the operative functions of the dispensing apparatus.

Concrete forming screed aids

Abstract: A residential and commercial construction aid comprises a specialized set of clamps and brackets and a system directed thereto for the rapid and accurate set up of perimeter screed forms during concrete forming processes. The specialized components of the present invention include: brackets comprising a tubular shaft affixed to “L”- or “J”-shaped brackets for attachment to the forms; screed rod clamps oriented in a variety of embodiments to anticipate varying installation requirements; and a “T”-handled screw. A unique installation method utilizing the components mentioned above with concrete forms and stakes is also provided.

Screed attachment for skid steer vehicle

Abstract: A screed attachment is provided for an industrial vehicle, such as a skid steer vehicle. The attachment includes a pair of extendable beam assemblies and a mounting structure configured to support the beam assemblies on the forward attachment point of the vehicle. The beam assemblies are set apart sufficient for the skid steer to drive between the assemblies to engage the mounting structure. Legs are provided to support the beam assemblies when the screed attachment is in use. The screed attachment includes a screed plate supported by the extendable beam of the beam assemblies so that the screed plate can be extended over a concrete pour and retracted along the pour to perform the screeding operation. The screed plate is vertically adjustable and may be under the control of a laser leveling system.

Concrete-leveling system

Abstract: A leveling system for freshly poured concrete is provided comprising a hand screed and a hand float. The system includes a laser beam leveling system consisting of a laser transmitter mounted on the hand screed and a laser beam receiver target mounted on the hand float. The hand screed further includes an inclinometer mounted on top of the hand screed for maintaining the angle of the screed when the screed is used on sloped surfaces. Bubble levelers positioned on top of the hand screed and the hand float are used to maintain the hand screed and the hand float in a level position.

Floor slab reinforcing method and concrete finishing device used therefor

Abstract: PROBLEM TO BE SOLVED: To improve not only quality by enhancing the durability of a floor slab but also reducing vibration and noise generated by construction, while a thickness is smaller than that in a conventional floor slab upper-surface thickness increasing construction method. SOLUTION: The surface of an existing floor slab 1 used for a bridge and a superhighway is ground, polished and cleaned, and soft concrete 2 of a slump of 10 cm or larger is placed for covering the surface of the ground, polished and cleaned floor slab 1, and the soft concrete 2 is compacted and integrated into the existing floor slab 1 by imparting high frequency vibration to a screed plate 12 of a concrete finishing device 10. The soft concrete 2 includes water, a hydraulic setting composition, an aggregate, an expansive admixture and fiber. The hydraulic setting composition uses a material for revealing a compressive strength of 10 N/mm 2 or higher in 2-3 hours after construction as a hardening speed of the soft concrete 2. COPYRIGHT: (C)2009,JPO&INPIT

Screeding Apparatus and System for a Three Dimensional Panel

Abstract: Disclosed is both an apparatus and system for screeding a three dimensional panel including a screed clip for securing a guide bar to the panel for screeding a cementitious coating to a substantially uniform finish and level. The clips are used in combination and in series to support a guide bar. The clips are attached to the wire grid mats of a three dimensional panel to enable a less than skilled laborer to finish a cementitious coating applied to the panel.

Retaining plate device of road paving machine

Abstract: PROBLEM TO BE SOLVED: To simplify the preparation of paving work, and to easily almost uniformalize the amount of asphalt mixture in front of a screed throughout the width of the screed, which is adjusted depending on the width of a road to be paved. SOLUTION: A retaining plate 6, which regulates the scattering of the asphalt mixture, spread by a screw 4, to the front side of a machine body 1, comprises a fixed retaining plate 6c which is fixed to the machine body 1, and a pair of expansion retaining plates 6b and 6a which can be freely expanded/contracted on the right and left sides of the fixed retaining plate 6c. The pair of expansion plates 6b and 6a is supported on right and left spray bar covers 3B and 3A, respectively, and expanded/contracted along with the expansion/contraction operations of the right and left spray bar covers 3B and 3A and a pair of spray bars 3b and 3a. COPYRIGHT: (C)2008,JPO&INPIT

Acoustic Flanking Block

Abstract: A flanking block 1 for use in the acoustic insulation of floating floor systems comprises an elongate length of resiliently deformable insulating material. The flanking block has an upper face (2 figure 1a), a wall-abutting face 4 generally perpendicular to the upper face and a base face (6 figure 1a) generally parallel to the upper face and generally perpendicular to the wall-abutting face. The base face is wider than the upper face and a screed facing face 8 extends between the base face and the upper face. The flanking block preferably has a series of parallel horizontal pre-cuts 12 which run through the block which allow easy removal of excess material. The flanking block also preferably has an adhesive layer (14 figure 1b) and 22 of double sided adhesive tape on the base face and or screed facing face to secure it in position and also prevent the screed from leaking underneath the flanking block. An acoustic insulation system and a floating floor construction, utilising the flanking block, are also provided, together with a method of construction for the floating floor.

Ergonomic concrete hand screed

Abstract: An ergonomically-shaped hand screed for levelling and finishing concrete is provided. The screed has a finger relief groove on its rear face and a thumb relief groove on its front face. Both the finger and thumb grooves are positioned nearer the top surface of the screed to form an ergonomically comfortable handgrip. A concrete relief groove is located on the front face near the bottom surface to form a scraper edge. A ridge separates the thumb relief groove and the concrete groove. When the screed is used, the scraper edge and concrete relief groove draw up the concrete overburden from a concrete surface and deflect it away from the operator's hands.

Device for compacting end part of pavement body

Abstract: PROBLEM TO BE SOLVED: To provide a device for compacting an end part of a pavement body by which paving of a thick layer without a form can be finished neatly SOLUTION: The device for compacting the end part of the pavement body includes; an end plate 30 which is arranged beside a screed for evenly laying and compacting a paving material spread out on an underlayer in the advancing direction, extended in the advancing direction, and protruded downward beyond a lower surface of the screed to come into contact with the underlayer to form a side edge part of the pavement body substantially vertically; and an end part compacting plate 20 arranged in a rear side of an end part of the screed inside the end plate 30 to compact the end part of the pavement body while moving up and down In the device, an inclined dike body 22 is mounted on an end part of the compacting plate 20 in a manner of projecting downwards A shoulder part of a side edge part of the pavement body formed by the screed and the end plate 30 is compacted while being formed to have a chamfer by the inclined dike part 22 COPYRIGHT: (C)2008,JPO&INPIT

Machine for the maintenance and conditioning of road shoulders

Abstract: A machine for the maintenance and conditioning of road shoulders having a work vehicle, an aggregate tiller, a screed assembly, and an attachment apparatus; the attachment apparatus being such that the screed assembly is rearward of the aggregate tiller, and such that the aggregate tiller and the screed assembly operate on the road shoulder while the work vehicle travels on the road proper. A preferred embodiment includes an assembly of the aggregate tiller, the screed assembly, the attachment apparatus, a folding apparatus whereby the assembly may be folded into a stowed position, a broom whereby the road edge may be swept clean, and adjustment mechanisms whereby the assembly may be adjusted; the adjustment mechanisms being remotely controlled.

Spreading machine mechanically broaden type leveling plate width regulating device

Abstract: The utility model discloses a mechanical widen type screed hydraulic widening device of spreader machine, which comprises a guide rail fixing component arranged at two ends of the mechanical widen type screed of spreader machine. A movable width reduction plate component is arranged in the guide rail fixing component. A cylinder head end of a hydraulic telescopic cylinder is fixedly connected with the guide rail fixing component, and the piston rod end is fixedly connected with the width reduction plate. The utility model has simple structure, easy operation and reliable performance. The device makes the deficiencies of the mechanical widen type screed can not stepless change the spreading width, and can achieve the stepless change of the spreading width, which makes the spreading machine not only has the rigidity of the large width spreading operation but also has the conveniences of telescopic screed, improves the working efficiency of the spreading machine. Meanwhile the utility mode guarantees the operational quality of the large spreading width and effectively solves the difficulty of the spreading operation in the tunnel of the high-grade highway.

Movable automatic plastering machine

Abstract: The utility model relates to a mobile automatic white washing machine, which belongs to the white washing machinery in construction project The aim of the utility model is to provide the mobile automatic white washing machine The machine comprises a base, , a guide tube frame fixed upon the two lateral parts, and a top beam The master case, which is arranged among the guide tube frame and is airproofed by cover plate, can move up and down The hopper is fixed in the front of the master case The wet screed, which is the main component of the mobile automatic white washing machine, is fixed at the front end of hopper The wet screed is made of the stainless steel, and is applied in plastering and white washing The utility model is applied in the trowelling and the calendaring of the mortar, the grout, the plaster, and the cement thinner upon the various metopes Therefore the work efficiency is high; the quality is excellent; the process flowing scheme can be automatically controlled; the energy consumption is low; the performance is stable The machine can be arose and descended automatically The machine still reduces the burdensome labor intensity of the builders The work, the time, and the labor are saved The operation is easy The usage is convenient and secure

Skin-free floor screed and method for obtaining same

Abstract: The invention relates to a binder composition based on calcium sulfate and comprising aluminum sulfate wherein more than 5 wt% of the calcium sulfate is under anhydrous form.

Structure for construction work has material forming intermediate energy store adjacent to cable

Abstract: The structure (1) includes a line (2) through which a cooling or heating medium flows. The structure includes a material adjacent to the line to serve as an intermediate store for energy, in particular latent heat storage material (4). The screed (6) is laid down on top of this, and the floor is finished off with a floor covering (7).

Triode screeding machine knife tool apparatus

Abstract: The utility model discloses a blade device for triode screed machine, comprising a lower mould, an upper mould engaged with the lower mould, and a dump plate hung on the upper mould. The lower mould is provided with a big guiding pillar, and the upper mould is provided with a big cover matched with the big pillar while the big pillar is through in the big cover. The upper mould is fixed with a small guiding pillar crossing the dump plate, while the lower mould is provided with a small guiding cover matched with the small pillar. The upper surface of the lower mould is concave to form a material guiding slot with bottom provided with a supporting block. And the bottom side of the material guiding slot is provided with a screed lower blade, crossing the supporting block, which is composed of a group of separated screed knives. The upper mould is provided with an upper blade fixing base which is provided with a screed upper blade engaged with the screed lower blade while the screed upper blade is composed of a group of separated screed knives. The utility model has the advantages in low using cost, accurate match between the upper and lower moulds and accurate locating of triode bar.

Pitch-rood-face pit-slot paving machine

Abstract: The utility model discloses an asphalt pavement pits paver which belongs to construction machinery. The structure comprises a foundation vehicle and an incubator arranged on the chassis of the foundation vehicle. A driving device is arranged beneath the chassis. A generating set and a blender driving box are arranged on the front side of the incubator of the chassis. An infrared heating insulation device, a blender and a discharging auger are arranged inside the incubator. The discharging auger matches to the driving motor of the discharging auger arranged on the back side of the incubator. The incubator backside is connected to a screed through a hydraulic device and a big screed arm. A thickness regulator is provided on the screed. Compared with the existing technology, the asphalt pavement pits paver of the utility model is characterized by rational design, fast speed on site transfer, high thermal efficiency, and reliable working performance.

Adjustable screed board for leveling sand or cement mortar, has rectilinear elements connected to each other in rectilinear manner by bolts, and rod arranged transversal with respect to board and adjustable in height

Abstract: The board (1) has two rectilinear elements (2, 3) connected with respect to each other in a rectilinear manner by bolts (6a, 6b). The elements are made of aluminum and blocked at their ends (2a, 2b, 3a, 3b) by stainless steel or plastic parts, where the element (2) comprise an opening (4), and the element (3) comprises a set of perforations (5a-5e) that is regularly spaced. The opening and perforations receive the bolts. A rod (7) is placed at the end (2b) of the element (2) and is arranged transversal with respect to the board, where the rod is adjustable in height. An independent claim is also included for a method for leveling mortar.

Ground-level drain channel i.e. shower drain, installation method, involves inserting sealing foil into opening, and pouring tile adhesive into sealed opening, and inserting saucer-type drain channel into sealed opening

Abstract: The method involves arranging a disk-shaped sheeting element on a distance foot and above a drain pipe. A space is filled with a screed (44), and the sheeting element is lined. The screed is dried, and the sheeting element is removed from an opening at the screed. A sealing foil (48) is inserted into the opening, and a tile adhesive is poured into the sealed opening. A saucer-type drain channel (46) is inserted into the sealed opening, and the distance foot is adjusted to a height of the screed, where the sealing foil comprises foil pieces. An independent claim is also included for an installation set for installation of a ground-level drain channel in a ground.

Quick Release Screed Bar Holder

Abstract: A novel adjustable screed bar holder used to support screed bars used in concrete finish work. The holder moves along a supporting device such as a stake, pin, or post. A lever on the holder is coupled to a cam wheel such that movement of the lever will disengage the cam wheel from the stake. When the cam wheel is in the disengaged position the holder is free to move along the stake until the lever is released and the cam wheel secures against the stake. Typically the holder will be used to hold a piece of lumber, pipe, rebar, or tubing parallel to the forms used in concrete placement. A screed may then be run over the concrete while it rides on the screed bar supported by the adjustable holder.

Screeding apparatus of road pavement vehicle

Abstract: PROBLEM TO BE SOLVED: To enhance working efficiency and finishing performance by minimizing the paved portion remaining without being pushed and solidified by a screed even when the screed is turned with a minimum radius together with a vehicle body. SOLUTION: This screeding apparatus of a road pavement vehicle comprises the screed 11 towed by the vehicle body 5 to laying down and leveling an asphalt mixture and smoothly finishing a paved surface and a pair of left and right end plates 15 so installed on both sides of the screed 1 as to project forward from both sides. The end plate 15 comprises a side frame 16 fixed to the side of the screed 11, an opening/closing plate 18 rotatably fitted to the side frame 16 through a hinge pin 17 and bendably toward the inside of the screed 1 in the lateral extension width, and an opening/closing mechanism 19 for holding the position of the opening/closing plate 18 after the rotation of the opening/closing plate is adjusted. COPYRIGHT: (C)2008,JPO&INPIT

Method for string screed making of mortar

Abstract: FIELD: building, particularly finishing works. ^ SUBSTANCE: method involves fastening corbels to surface to be plastered; extending thread between the corbels; staking out plane; arranging screed marks, which are used as bases for future screeds and forming screeds of mortar. String made of steel wire or thin cable may used as the thread. The thread is used as indirect screed reinforcement during plastering operation and defines screed top. The thread leans against hardening mortar without thread deflection, wherein the mortar is applied on tightened thread so that mortar heap is created. Then the mortar heap projecting over the thread is cut as mortar passes from liquid to solid state. ^ EFFECT: increased accuracy, labor productivity due to combination of wall plane staking out operation with screed making operation and simplified staking out operation. ^ 6 dwg

Fluid floor screed preparation and mixing vehicle

Abstract: The invention relates to a fluid floor screed preparation and mixing vehicle (1), comprising at least one sand compartment (6) and one binder compartment (7), a mixer (8), and conveying (11) and/or transfer means (12) to feed said mixer (8). It is characterised in that said vehicle (1) comprises energy generation means (14) devised to be suitable for communicating thermal energy at least to said sand compartment (6).

Controlling system for spreader vibration, walk and ironing-board float

Abstract: The utility model relates to an electric control system of the pavement project machinery. Specifically, this utility model is a control system used on the asphalt pavement paver to control the vibrating, walking of paver and the screed floating. The utility model is characterized in: the control circuit comprises: a relay KA, a start-up switch S A connects one end of the relay KA with the power source, and a normally open contact K A-1 connects one end of the vibrating control equipment with the power source; a time relay KT1, a normally open contact KA-2 connects the KT1 and the power source, and a normally open contact KT1-1 connects one end of the walking control equipment and the power source; a time relay KT2, a normally open contact KT1-2 connects KT2 and the power source, and a normally open contact KT2-1 connects one end of screed locking valve YV1 and YV2 with the power source. This utility model can realize the process of first vibrating and then walking and finally floating the screed when the paver starts, so the pavement paving quality is improved.