TL;DR: In this article, films made from cellulose nitrate LR-115 (Pathe Kodak) and CR-39 have been used for long-term measurements of the radon-222 emanation from building materials and the resultant activity inside houses.
Abstract: Films made from cellulose nitrate LR-115 (Pathe Kodak) and CR-39 have been used for long-term measurements of the radon-222 emanation from building materials and the resultant activity inside houses. The emanation from crushed granite bricks is found to be produced from within the brick while in the clay bricks it originates in the surface layers only. The airborne radon activity inside houses constructed from clay brick is found on average to be 22 mBq 1-1 (0.57 pCi 1-1) while inside a closed vessel sealed to the brick the average equilibrium activity is 40 mBq 1-1 pCi 1-1).
TL;DR: In this article, a process and apparatus for producing fabric-reinforced, thin concrete panels suitable as a backer board for construction materials such as ceramic tile, slate and thin brick is described.
Abstract: The invention provides a process and apparatus for producing fabric-reinforced, thin concrete panels suitable as a backer board for construction materials such as ceramic tile, slate and thin brick. A process is described whereby the components of the panel are deposited on a web of disposable carrier/release material such as polyethylene coated paper while moving on a conveyer belt to form a continuous strip, the strip is cut into panels and the wet, uncured panels are stacked by means of an air-float stacking unit, then subsequently cured.
TL;DR: In this paper, an unburned carbon-containing refractory bricks having high properties was obtained by causing the material comprising substantially more than 1 weight % carbon to contain 1-10 weight % aluminum powder and/or magnesium powder each independently or in a mixture thereof.
Abstract: The invention relates to precluding the shortcomings intrinsic to the conventional unburned carbon-containing refractory bricks, ie, oxidization under high temperature conditions and the incidental decarbonization, the phenomenon of exfoliation and detachment of the fragile layers, and more particularly to obtaining thereby unburned carbon-containing refractory bricks having the high properties by causing refractory brick material comprising substantially more than 1 weight % carbon to contain 1-10 weight % aluminum powder and/or magnesium powder each independently or in a mixture thereof, and/or 05-6 weight % silicon powder
TL;DR: In this article, a brick panel wall construction is described, including a backing board for a bricks panel which is formed of extruded plastic foam for moisture resistance and insulation, and load bearing clip members are sandwiched within the tongue and groove joints between adjacent upper and lower brick panels.
Abstract: A brick panel wall construction is disclosed including a backing board for a brick panel which is formed of extruded plastic foam for moisture resistance and insulation. The wall construction includes a plurality of brick panels having plastic foam backing boards and a plurality of load bearing clip members that support the bricks which are secured to the backing boards. The load bearing clip members are sandwiched within the tongue and groove joints between adjacent upper and lower brick panels. Each load bearing member includes a protruding terminal lip that extends into the joint area between the bricks of adjacent panels. Mortar is packed or tuck pointed into the joint area to cover the protruding lips of the load bearing clips, and the clips become the support for the bricks that are secured to the plastic foam backing boards. Thus, the invention provides an improved insulating and moisture resistant backing board, and a direct mechanical connection of the bricks to the wall supporting structure such that the support for the bricks is not dependent upon the non-structural backing board.
TL;DR: In this article, the shape imparted to the brick edges is governed by the shape of the peripheral portions of the rollers mounted on a shaft at fixed locations along the shaft in alignment with the wires of the wire cutter.
Abstract: Green brick newly formed by pushing a slug through a wire cutter, have their longitudinal edges shaped by means of a plurality of rollers positioned above and across the path of conveyance of the bricks so that each roller simultaneously engages the adjacent edges of two adjacent bricks. The shape imparted to the brick edges is governed by the shape of the peripheral portions of the rollers. The rollers are mounted on a shaft at fixed locations along the shaft in alignment with the wires of the wire cutter. Before operation the locations of the rollers along the shaft may be adjusted through spacers in order to adapt the rollers to different sizes of bricks. The roller mounting shaft may be adjusted in a vertical plane towards or away from the conveyor path to adjust the depth of the rollers for a specific operation or to sufficiently raise the rollers away from the conveyor path where they may be kept idle when not in use. The shaping of the edges of the bricks causes brick material to adhere between adjacent bricks immediately below the edges which have been shaped. Accordingly, a plurality of cutter members are provided across the path of conveyance to enter between the rows of bricks to sever the adhering material between the bricks. The cutter members are mounted on individual arms which, in turn, are mounted on a cross member overlying said path such that the arms are movable transversely of the path. The cross member is adjustable in a vertical plane towards and away from the conveyor path to adjust the depth of the cutting member for a specific operation or to merely place them in an idle position when not in use.
TL;DR: In this paper, a steel plate having a concavity of dimensions which the sum of the depth of the con-cavity plus an expansion absorbing tolerance, and applied to a maximum surface area, and lying over the concaveity.
Abstract: OF THE DISCLOSUREThe present invention relates to a fire brick for a rotary kiln, provided on one or both large surface area portions with at least one concavity extending in the radial direction of the kiln, and opening on at least the face. The present in-vention further relates to a fire brick for a rotary kiln as described above, further provided with a steel plate having a concavity of dimensions which the sum of the depth of the con-cavity of the brick plus an expansion absorbing tolerance, and applied to a maximum surface area, and lying over the concavity.The present invention still further relates to a fire brick for a rotary kiln as described above, further provided with board or asbestos, etc., on the face end of the steel plate.
TL;DR: In this paper, an olivine refractory brick has been proposed for use as a thermal energy storage unit in an electric thermal storage furnace and characterized by having excellent thermal shock properties and resistance to spalling.
Abstract: This invention relates to an olivine refractory brick having thermal and physical properties suitable for use as a thermal energy storage unit in an electric thermal storage furnace and characterized by having excellent thermal shock properties and resistance to spalling. The brick consists essentially of densely compacted grains of olivine and a plastic refractory kaolin binder which effects a sintered, liquid assisted but substantially solid state grain-to-grain bonding of the olivine grains.
TL;DR: In this paper, a method utilizing a pair of opposed brick control devices with an alignment string spanning therebetween to provide a brick facing which is horizontally and vertically aligned is presented, where the alignment string is used to provide vertical alignment of the edge of the brick facing.
Abstract: A brick control device including a base portion attachable to a wall, a brick flange extending outwardly therefrom for providing vertical alignment of the edge of the brick facing, and a portion extending from the base and including a string flange for attachment of a string holder. Also disclosed herein is a method utilizing a pair of opposed brick control devices with an alignment string spanning therebetween to provide a brick facing which is horizontally and vertically aligned.
TL;DR: In this paper, a fastening device for being mounted on bricks in a brick wall wherein the mortar is recessed, having hooks for hanging framed pictures and other articles is described. But the hooks are not attached to the top of the wall.
Abstract: A fastening device for being mounting on bricks in a brick wall wherein the mortar is recessed, the fastening device having hooks for hanging framed pictures and other articles. The device is constructed of a single piece of spring steel and has generally three functional parts: a central flat part which bears against one side of the brick and has the hooks extending from the other side which have been stamped to protrude outwardly from the central part; an upper bent part which has been bent over and around in a direction away from the direction that the hooks protrude through an angle, as seen from the side, in a range of 135° to 225° relative to the flat part and preferably about 180° and extending from the edge of the bent part are a plurality of serrations which are adapted to engage the top edge of a brick; and a lower spring part which extends inwardly relative to the central flat part under the brick involved, which, being of a generally "U" configuration with outwardly extending wings inclined upwardly at an angle of about 20 degrees, bears against the lower edge of the brick and thereby resiliently urges the serrations downwardly into a firm engagement with the top edge of the brick.
TL;DR: The latent heat storage brick as mentioned in this paper is intended for heating and cooling, and consists of an impermeable hollow filled with material storing latent heat, with two flat parallel outer faces joined by a peripheral concave rounded face.
Abstract: The latent heat storage brick is intended for heating and cooling, and consists of an impermeable hollow filled with material storing latent heat. The hollow brick can be of glass, ceramic material or plastics, with two flat parallel outer faces (1) joined by a peripheral concave rounded face (2). It can be selectively coated on one flat outer face with material giving high absorption of short-wave radiation and low emission of long-wave radiation. It may have through channel pipes retaining pipelines with heat medium.
TL;DR: In this article, a mixt. of fine sand, cement, water and a water-dispersed synthetic resin (co)polymer binder polymerized in an aq. of 0.5-15 (esp. 2-3) wt.
Abstract: Bricks are made from a mixt. of fine sand, cement, water and a water-dispersed synthetic resin (co)polymer binder polymerised in an aq. medium. The binder is pref. a vinyl resin and esp. a copolymer of vinyl acetate and vinyl versatate. The binder is pref. added to the mixt. of sand, cement and water in an amt. of 0.5-15 (esp. 2-3) wt.% on total solids. The bricks have the appearance, even wear and water uptake properties of baked clay bricks without the high energy consumption associated with the baking process. The bricks are useful e.g. in road construction where the even wear and high water uptake are useful in preventing vehicles aquaplaning.
TL;DR: In this paper, a practical method to determine the ultimate strength of plain brick or concrete block masonry walls is presented, which is compared with a more rigorous analytical solution, with published test data, and with the current Canadian design code for masonry.
Abstract: This paper presents a practical method to determine the ultimate strength of plain brick or concrete block masonry walls. Results given by the proposed method are compared with a more rigorous analytical solution, with published test data, and with the current Canadian design code for masonry. Means and coefficients of variation as well as distribution shapes of the ratio of test to predicted loads are estimated from experimental data. Design procedures and simplifications along with two examples are presented.
TL;DR: In this paper, an extruding die consisting of a progressively narrowing inlet funnel portion having a downstream end and a constricted neck portion forming a material shaping die throat to receive a column of brick forming clay mix and shape the clay mix column to a rectangular cross-section whose width dimension perpendicular to said face slightly exceeds the desired brick width.
Abstract: Apparatus for making extruded bricks having a textured handmade appearing face designed to form the outer building wall surface, comprising a brick extruding die including a progressively narrowing inlet funnel portion having a downstream end and a constricted neck portion forming a material shaping die throat to receive a column of brick forming clay mix and shape the clay mix column to a rectangular cross-section whose width dimension perpendicular to said face slightly exceeds the desired brick width. A subsurface disrupting elongated thin bridge member transversely spans the die throat and is supplied with liquid under pressure to produce downstream directed liquid jets internally disrupting the clay mix column in the die throat immediately below the upper boundry surface thereof along a substantially horizontal disruption plane. Devices are provided with structure downstream of the die throat for plowing off the uppermost strata of the clay mix column to the level of said disruption plane to expose the disrupted zone and form the textured handmade appearing face and for slicing the exiting column into discete bricks.
TL;DR: It is now possible, using computers, to 'build' a hospital without laying a single brick, according to a suite of programs through which architects, engineers, surveyors and planners can co-ordinate their work.
Abstract: It is now possible, using computers, to 'build' a hospital without laying a single brick. John Bolton, Chief Works Officer and Director General of Works, DHSS, describes the development of a suite of programs through which architects, engineers, surveyors and planners can co-ordinate their work.
TL;DR: In this paper, the incorporation of impurities in tridymites taken from a used silica brick have been studied by means of a high-resolution microprobe, X-ray fluorescence, Xray diffractometry, and optical microscopy.
Abstract: The incorporation of impurities in tridymites taken from a used silica brick have been studied by means of a high-resolution microprobe, X-ray fluorescence, X-ray diffractometry, and optical microscopy. The bulk impurity content of the brick changes strongly from the hot zone (4.7 wt%) to the colder part of the brick (7.6 wt%), indicating material transport along the temperature gradient. The transport medium for migration processes is probably a melt occurring in narrow veins between large tridymite crystals at high temperatures. The average impurity contents of homogeneous tridymite single crystals are 0.49 wt% in the hot zone of the brick and 0.81 wt% in the cold zone. Al2O3, TiO2, and Na2O are main impurity constituents; the tridymites do not contain significant amounts of Fe2O3 or CaO. The a parameters of tridymites decrease by about 0.26% from 4.9837 A to 4.9709 A from the hot zone to the cold zone of the brick and the c dimension shows a smaller decrease (0.11 %) from 8.2023 A to 8.1933 A.
TL;DR: A rig for lining with brick a kiln, tunnel or like surface embodies a frame that is of variable size to suit different surface diameters, and two relatively adjustable jacks support deformable arcuate brick column support members at each opposite sides of the frame as discussed by the authors.
Abstract: A rig for lining with brick a kiln, tunnel or like surface embodies a frame that is of variable size to suit different surface diameters, and two relatively adjustable jacks support deformable arcuate brick column support members at each opposite sides of the frame. Each arcuate member is a continuous longitudinally deformable trough containing an expansible tube overlaid by a solid rubber or like flexible brick contact element.
TL;DR: In this article, the authors proposed a method to prevent a wedge-shaped joint gap from being formed at a conical part of a converter by a method wherein trapezoidal bricks are piled up at an appropriate inclination angle gainst a converter which has conical type furnace shell.
Abstract: PURPOSE:To prevent a wedge-shaped joint gap from being formed at a conical part of a converter by a method wherein trapezoidal bricks are piled up at an appropriate inclination angle gainst a converter which has a conical type furnace shell. CONSTITUTION:When constructing a lower part of the furnace body of a converter or the like, the trapezoidal bracks are used which have a fixed thickness (t) and in which the widths (a), (c) on the side of the wall of an iron shell 1 as a viewed in the trhickness direction and the widths (b), (d) on the side of the furnace center are different from each other. When the bricks are placed with the cross-sectional surfaces of the bricks in parallel to the iron shell 1, the difference berween the furnace circumference l' at point A and that l at point B is absorbed by the difference (a-c) of the brick width across the thickness of the brick and, accordingly, the bricks can be placed without generating any gaps therebetween. By using trapezoidal bricks, it is made possible to minimize or completely eliminate joint gaps even in the case of building up the bricks at an inclination angle of alpha against the horizontal line for the iron shell 1. Accordingly, the useful life of the converter can be prolonged greatly.