106results about How to "High hollow rate" patented technology

The invention provides a hollow recombined bamboo and manufacturing method thereof. The hollow recombined bamboo is formed through forming holes in the longitudinal direction inside a plate pasted and connected by bamboo bunches, bamboo filaments or tiny bamboo splits. The manufacturing method includes the steps: splitting the original bamboo into bamboo bunches, bamboo filaments or tiny bamboo splits in the longitudinal direction; softening after thermal treatment, and then drying and gum dipping; paving bamboo units in a mould pressing groove by different levels uniformly; paving a moulded rod in the direction parallel to the longitudinal direction of the bamboo bunches, bamboo filaments or tiny bamboo splits as per the requirements of hollow rate; gluing slabs in the mould pressing groove through high-frequency hot pressing or cold pressing pressure maintaining and baking, demoulding, removing the mould pressing groove or a high-pressure inflating device, or adopting permanently filling; and then forming the hollow recombined bamboo finished product through follow-up machining. The hollow recombined bamboo and the manufacturing method thereof can be applied in the field of building beam columns, structural members, furniture and decorating materials.

The invention relates to a method for preparing low-cost hydrophobic hollow glass microspheres by a spray drying method, wherein the method comprises the following steps: adding a mixed solution of boric acid, potassium hydroxide, lithium hydroxide and calcium hydroxide into a sodium silicate water glass solution in an atomizing way at high-speed agitation; and carrying out spraying drying and organic silicon surface modification on the mixed solution to obtain the hydrophobic hollow glass microspheres. The hollow glass microspheres have the characteristics of high yield, low cost and high stability.

The invention relates to a hollow core slab for the combined use of filling rods and filling boxes, and belongs to the field of construction of the common buildings. The hollow slab is a two-way slab and is divided into four peripheral hollow regions (1) and one central hollow region (2) on the plane, wherein filling rod combined blocks (3) and filling boxes (4) are embedded in the peripheral hollow regions (1) and the central hollow region (2) respectively; the central hollow region (2) is enclosed by four boundaries (7); each peripheral hollow region (1) is enclosed by one support edge (5), two oblique lines (6) and one boundary (7); each filling rod combined block (3) faces the direction vertical to the support edge (5) of the peripheral hollow region (1) where the filling rod combined block (3) is; and each filling rod combined block (3) arranged on the oblique line (6) faces the direction vertical to any one of support edge (5) adjacent to the oblique line (6). The hollow slab has large span and light weight in hollow floor system, has high reliability, shock resistance and crack resistance in a structure, and has high economy and applicability.

The present invention discloses a method for preparing hydroxyapatite hollow microsphere. Said method includes the following steps: using tetrahydrate calcium nitrate and ammonium hydrogen phosphate as raw material, adopting chemical precipitation method to prepare hydroxyapatite slurry, then diluting said hydroxyapatite slurry by using distilled water, adding ammonium hydrogen carbonate as additive, uniformly stirring them, spray drying, making following heat treatment so as to obtain the hydroxyapatite hollow microsphere formed from nano grains.

A preparation method of low cost hydrophobic hollow glass micro bead by means of spray drying includes the steps of adding an atomized mixed solution of boric acid, potassium hydroxide, lithium hydroxide, and calcium hydroxide into a high-speed stirred water glass solution, spray drying the solution, and then treating the surface of the micro bead with an organic silicon water repellent.

The invention discloses an on-site concrete hollow floor construction method of LPM light filling embodies. The construction method comprises the steps that a plate bottom formwork is erected, plate bottoms and hidden rib beam steel bar binding cushion blocks are installed, anti-floating drilling is conducted; and plate bottoms and hidden rib beam steel bars are bound, and a specially-assigned person is dispatched to punch holes in the bottom plate template according to the anti-floating distribution diagram, install water and electric pipelines, hoist LPM light filling pieces, place the filling pieces, bind plate surface reinforcing steel bars, reinforce anti-floating iron wires of the filling pieces, pour concrete, maintain, demold and the like. The method is simple in process, convenient to construct and easy to operate; by the adoption of the technology in a proper structure, the engineering quality is guaranteed, and meanwhile the beneficial effects of being small in concrete consumption, large in space, low in structural self-weight, small in earthquake acting force, good in structural heat insulation and sound insulation performance, capable of shortening the construction period and the like are achieved.

The invention provides a building block mold, which is formed by at least one mold unit through horizontal arrangement and combination, wherein the mold unit comprises a support plate, a mold box, a mold core and a press head, the mold box is movably arranged on the support plate, the mold core is arranged in the mold box, and the press head is movably inserted and arranged in a cavity formed between the mold box and the mold core and is provided with a hole structure. The building block mold is used for forming an anti-seismic anti-crack building block provided with a projected bolt connecting component. The outer wall of the press head with the hole structure realizes the seamless attaching to the inner wall of the mold box, and the press head with the hole structure is an 8-shaped press head or a lattice-shaped press head. The invention also provides a method for pressing and forming the building block by using the building block mold. The building block mold is used for extruding and forming the anti-seismic anti-crack building block provided with the projected bolt connecting component, and in addition, the formed building block has good mechanical properties such as anti-shearing intensity.

The invention relates to a tenon-and-mortise hollow building block and a laying method thereof. The tenon-and-mortise hollow building block comprises a building block body. A convex rib is arranged atthe top of the building block body, a groove is formed in the bottom of the building block body, and when two building block bodies are arranged in an overlaid manner, the convex rib is matched withthe corresponding groove. Three vertical through holes are formed in the building block body, the middle through hole is a grouting hole, each through hole is in a trapezoidal shape, and the width ofeach through hole is gradually increased from the top to the bottom of the building block body. Trapezoidal grooves are formed in the two side walls of the building block body respectively, and the width of each trapezoidal groove is also gradually increased from the top to the bottom of the building block body. During laying, the building block bodies are laid in a manner of being connected leftand right and staggered up and down by a half building block, the building block bodies can be used as a masonry structure infilled wall after single-row laying and grouting, and the building block bodies can be used as a bearing wall after two rows of building block bodies are laid and sandwiched with an insulation board and are tied by reinforcing steel bars. The tenon-and-mortise hollow building block integrates multiple functions, improves the anti-seismic property of rural building masonry and is suitable for large-scale popularization.

A prefabricated composite steel tube concrete latticed column is composed of prefabricated double-steel-tube interlayer concrete column limbs and lattice type connecting pieces between the column limbs. Steel tubes at the outer sides of the prefabricated column limbs are connected with the lattice type connecting pieces through bolts, and interlayer concrete between steel tubes at the inner sides and the outer sides of the column limbs is ultra-high-performance concrete. The upper-layer prefabricated column limbs and the lower-layer prefabricated column limbs are connected through flanges and connecting pipes. The double-steel-tube interlayer confined concrete can effectively reduce the steel distribution rate of column components, save the concrete consumption and reduce the self weight. The latticed column adopts a full-assembly manner, site construction is simple and convenient, and wet operation is not needed. A hollow part of the inner steel tube serves as strength reserve, and the purposes of crane upgrading and plant transformation in the using process can be achieved through secondary pouring of concrete in the hollow part. Based on the characteristics of simple and convenient design and flexible application, the latticed column can be widely applied to medium-sized industrial factory buildings, and the durability, the fire resistance and the anti-seismic property of the latticed column are effectively improved.