CN217494627U - Die of prefabricated mould of arc prefabricated part installed at roof flashing position - Google Patents

Abstract

The utility model discloses a mould of a prefabricated mould of an arc-shaped prefabricated part installed at a roof flashing position, which solves the problem that how to manufacture the simple mould of the arc-shaped prefabricated part at low cost on a construction site to finish the construction of an arc-shaped corner of a roof surface with high quality; the method is characterized in that the existing cheap materials on site are utilized and combined according to the characteristics of the materials to sequentially manufacture two middle tire membranes of an Australian pine plate tire membrane and a gypsum tire membrane, finally a glass fiber reinforced plastic-imitated simple mold similar to glass fiber reinforced plastic materials is obtained, and the Roman arc prefabricated member is prefabricated on the simple mold.

Description

Die of prefabricated mould of arc prefabricated part installed at roof flashing position

Technical Field

The utility model relates to a concrete prefab mould, in particular to roofing flashing position department spreads mould of the prefabricated mould of the roman arc prefab of subsides.

Background

In the construction of the roof surface of a building, after the construction of a roof waterproof layer is finished, an arc-shaped corner of a Roman arc is required to be arranged at a roof flashing position, namely a corner connecting part between a parapet wall and the roof, so as to be beneficial to the drainage of roof rainwater; in the prior art, when Roman arcs are constructed, a method of erecting square timbers, wood veneers and steel formworks on site is adopted, cast-in-place concrete is formed by manual plastering, the defects of long construction time and difficulty in controlling the size and the impression of the formed Roman arcs exist, and particularly when the area of a roof surface is large, the appearance of the finished Roman arcs is often inconsistent, so that the impression of the roof surface is seriously influenced; if the arc-shaped prefabricated member of the Roman arc is prefabricated by a prefabricating method and then is installed at a roof flashing position, the problem of consistency of the Roman arc appearance can be solved, but the prefabricated member of the Roman arc belongs to a special-shaped structure mold, the processing difficulty is high, the manufacturing cost is high, the reuse rate of the mold is low, and how to develop the prefabricated mold of the Roman arc-shaped prefabricated member, which has the advantages of simple and easy field construction, low cost, local material utilization and capability of dynamically controlling the mold cost according to the prefabricated Roman arc quantity, becomes a subject in field construction.

Disclosure of Invention

The utility model provides a mould of the prefabricated mould of the arc prefab of roofing flashing position installation has solved how to accomplish the technical problem that roof face arc corner was executed and is done at the simple and easy mould of job site low-cost preparation arc prefab high quality.

The utility model discloses a solve above technical problem through following technical scheme:

the utility model discloses a general concept is: the method is characterized in that the existing cheap materials on site are utilized and combined according to the characteristics of the materials to sequentially manufacture two intermediate tire membranes of the macadamia pine plate tire membrane and the gypsum tire membrane, finally, the glass fiber reinforced plastic-imitated simple mold similar to glass fiber reinforced plastic materials is obtained, and the prefabrication of the Roman arc-shaped prefabricated member is completed on the simple mold.

A prefabricated mould and a die for an arc-shaped prefabricated part installed at a roof flashing position comprise a wet Australian pine plate, wherein the wet Australian pine plate is bent and formed into a wood arc-shaped bottom template, the shape and the radian of the wood arc-shaped bottom template are completely the same as those of a prefabricated Roman arc-shaped prefabricated part, two ends of the wood arc-shaped bottom template are respectively provided with a wood plug plate, and the lower bottom surface of the wood arc-shaped bottom template is provided with a support; and uniformly coating gypsum mixed slurry in the grooves of the wood arc-shaped bottom template, wherein the thickness of the gypsum mixed slurry is 3 cm.

Uniformly coating scraped gypsum mixed slurry in a groove of a wood arc-shaped bottom template, drying and demolding, and demolding to obtain a gypsum matrix film, wherein an arc-shaped back surface is arranged on the gypsum matrix film, and a first piece of fine white gold yarn glass fiber gridding cloth, a first layer of medium-temperature vinyl resin adhesive layer with the thickness of 1 mm, a second piece of fine white gold yarn glass fiber gridding cloth, a second layer of medium-temperature vinyl resin adhesive layer with the thickness of 1 mm, a third piece of fine white gold yarn glass fiber gridding cloth and a third layer of medium-temperature vinyl resin adhesive layer with the thickness of 1 mm are sequentially stacked and paved on the arc-shaped back surface from inside to outside.

After three layers of fine white gold yarn glass fiber mesh cloth and three layers of medium temperature vinyl resin adhesive layers which are paved on the arc-shaped back surface in a stacking mode are dried, demolding is conducted to obtain the glass fiber reinforced plastic imitated simple mold, C20 polypropylene fiber reinforced concrete materials are uniformly coated and scraped in grooves of the glass fiber reinforced plastic imitated simple mold, the thickness of the C20 polypropylene fiber reinforced concrete materials is 3 cm, and after the C20 polypropylene fiber reinforced concrete materials with the thickness of 3 cm are dried, demolding is conducted to obtain the Roman arc-shaped prefabricated member.

The utility model discloses a bottom die plate which is bent into the shape and radian the same as those of a Roman arc prefabricated member after the Australian pine plate is wetted according to the characteristic that the Australian pine plate can be freely bent after being wetted and according to the design geometric shape of the Roman arc prefabricated member; making full use of the characteristics of plasticity, quick setting property, light weight and low cost of gypsum materials, preparing the matrix mud by taking gypsum as a raw material, proportionally mixing the gypsum with water and supplementing a certain proportion of mineral powder materials, scraping the matrix mud in a bottom die mold made of an Australian pine plate in a layered manner, and demolding after the gypsum is solidified and dried to obtain a gypsum matrix; then, taking a plaster matrix as a mould, attaching three layers of platinum yarn glass fiber mesh cloth and three layers of medium temperature vinyl resin adhesive on the plaster matrix, and finally obtaining a glass fiber reinforced plastic imitated simple mould similar to a glass fiber reinforced plastic material, wherein the mould has the characteristics of light weight, high strength, water resistance and good weather resistance, and an arc-shaped prefabricated member of the reinforced concrete material is prepared by using the C20 polypropylene fiber reinforced concrete material mixed on site; the prefabricated member has the advantages of low cost, simple and easy field operation and good prefabricated member forming, and is not only suitable for manufacturing prefabricated members at flashing positions of roofs, but also suitable for manufacturing other special-shaped concrete prefabricated members in civil construction sites.

Drawings

Fig. 1 is a schematic structural view of a roman arc type preform 11 of the present invention when it is installed at a parapet wall;

fig. 2 is a schematic structural diagram of the adjacent two roman arc-shaped prefabricated members 11 of the present invention when being spliced;

fig. 3 is a schematic structural view of a bottom die mold of the macadamia pine plate of the present invention;

FIG. 4 is a schematic view of the present invention in the construction of a gypsum membrane 5;

FIG. 5 is a schematic structural diagram of the present invention when a glass fiber reinforced plastic-like mold 9 is made on a gypsum tire membrane 5;

fig. 6 is a schematic structural diagram of the present invention when the roman arc-shaped prefabricated member 11 is manufactured on the glass fiber reinforced plastic imitated simple mold 9.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

a prefabricated mould and a die for an arc-shaped prefabricated member installed at a roof flashing position comprise a wet Australian pine plate, wherein the wet Australian pine plate is bent and formed into a wood arc-shaped bottom template 1, the shape and radian of the wood arc-shaped bottom template 1 are completely the same as those of a prefabricated Roman arc-shaped prefabricated member 11, two ends of the wood arc-shaped bottom template 1 are respectively provided with a wood plug plate 2, and the lower bottom surface of the wood arc-shaped bottom template 1 is provided with a support 3; and uniformly coating gypsum mixed slurry 4 in the grooves of the wood arc-shaped bottom template 1, wherein the thickness of the gypsum mixed slurry 4 is 3 cm.

After uniformly coating scraped gypsum mixed slurry 4 in a groove of a wood arc-shaped bottom template 1, drying and demoulding, demoulding to obtain a gypsum tire membrane 5, wherein an arc-shaped back surface 6 is arranged on the gypsum tire membrane 5, and a first thin white gold yarn glass fiber grid cloth 8, a first 1-millimeter-thick medium-temperature vinyl resin adhesive layer 7, a second thin white gold yarn glass fiber grid cloth, a second 1-millimeter-thick medium-temperature vinyl resin adhesive layer, a third thin white gold yarn glass fiber grid cloth and a third 1-millimeter-thick medium-temperature vinyl resin adhesive layer are sequentially paved on the arc-shaped back surface 6 from inside to outside in a stacking manner.

After three layers of fine white gold yarn glass fiber mesh cloth and three layers of medium temperature vinyl resin adhesive layers which are overlaid on the arc-shaped back surface 6 are dried, demolding to obtain the glass fiber reinforced plastic imitated simple mold 9, uniformly coating and scraping a C20 polypropylene fiber reinforced concrete material in a groove of the glass fiber reinforced plastic imitated simple mold 9, wherein the thickness of the C20 polypropylene fiber reinforced concrete material is 3 cm, and demolding to obtain the Roman arc-shaped prefabricated member 11 after the C20 polypropylene fiber reinforced concrete material with the thickness of 3 cm is dried.

A prefabricating and paving method for arc-shaped prefabricated parts installed at a roof flashing position comprises the following steps:

firstly, according to the shape and radian of a Roman arc prefabricated member at a flashing position of a pre-installed roof surface, wetting an Australian pine plate, and bending to manufacture a wood arc bottom template 1, wherein the shape and radian of the wood arc bottom template 1 are the same as those of the Roman arc prefabricated member at the flashing position of the pre-installed roof surface; respectively installing wooden plug plates 2 at two ends of a wooden arc-shaped bottom template 1, and installing a support 3 on the lower bottom surface of the wooden arc-shaped bottom template 2 to obtain a bottom template mold of the Australian pine plate;

step two, preparing gypsum mixed slurry: taking gypsum powder, taking quicklime powder according to 3% of the weight of the gypsum powder, uniformly stirring the gypsum powder and the quicklime powder, adding water, and stirring to obtain gypsum mixed slurry 4;

thirdly, coating the gypsum mixed slurry 4 obtained in the second step into a groove of the wood arc-shaped bottom template 1 in the bottom template mold obtained in the first step, coating and scraping for three times, wherein the thickness of each coating and scraping is 1 cm, and after the upper layer of gypsum mixed slurry 4 is solidified, coating the lower layer of gypsum mixed slurry 4 by scraping;

fourthly, after the three layers of gypsum mixed slurry 4 coated in the bottom die mold in a scraping mode are solidified and dried completely, the gypsum mixed slurry is removed to obtain a gypsum tire membrane 5;

fifthly, cutting three pieces of fine white gold yarn glass fiber mesh cloth 8 with the same area as the arc-shaped back surface 6 according to the area of the arc-shaped back surface 6 of the gypsum tire membrane 5 obtained in the fourth step; flatly paving a first fine platinum yarn glass fiber mesh cloth 8 on an arc-shaped back surface 6 of a gypsum tire membrane 5, painting a first layer of medium-temperature vinyl resin glue layer 7 with the thickness of 1 mm on the first fine platinum yarn glass fiber mesh cloth 8, then overlaying and paving a second fine platinum yarn glass fiber mesh cloth, then painting a second layer of medium-temperature vinyl resin glue layer with the thickness of 1 mm, then overlaying and paving a third layer of fine platinum yarn glass fiber mesh cloth, and finally painting a third layer of medium-temperature vinyl resin glue layer with the thickness of 1 mm; after the glue is dried, the glass fiber reinforced plastic imitated simple mould 9 consisting of the three layers of the platinum yarn glass fiber gridding cloth and the three layers of the medium-temperature vinyl resin glue is taken off from the plaster fetal membrane 5;

sixthly, preparing a C20 polypropylene fiber reinforced concrete material: taking cement, sand, stones with the diameter less than or equal to 0.5 millimeter, water and polypropylene fiber according to the following weight ratio: cement: sand: stone: water: polypropylene fiber = 1: 2.67: 3.22: 0.57: 0.1-0.01; firstly, uniformly stirring the cement, the sand, the stones and the water which are taken according to the proportion, then, adding the polypropylene fibers which are taken according to the proportion, and uniformly stirring again to obtain a prepared C20 polypropylene fiber reinforced concrete material 10;

seventhly, uniformly coating and scraping the C20 polypropylene fiber reinforced concrete material 10 prepared in the sixth step into the groove of the glass fiber reinforced plastic-imitated simple mould 9 obtained in the fifth step, wherein the thickness of the coating layer is uniform and is 3 cm, and the thickness of the coated and scraped C20 polypropylene fiber reinforced concrete material is controlled by a vernier caliper and a white rope stay wire; forming into arc-shaped prefabricated members of reinforced concrete materials, demolding after four hours to obtain Roman arc-shaped prefabricated members 11, and watering and curing the Roman arc-shaped prefabricated members for 7 days;

and eighthly, arranging polymer bonding mortar 14 at a corner between the parapet wall 12 and the roof surface protective layer 13, and adhering the Roman arc-shaped prefabricated member 11 subjected to watering and curing in the seventh step to the polymer bonding mortar 14.

Asphalt mortar or weather-resistant cement 15 is arranged in a splicing seam between two adjacent Roman arc-shaped prefabricated members 11; a coating finish is sprayed on the surface of the roman arc preform 11.

The bonding force between the polypropylene fiber and the cement is good, the bond stress between the fiber and the base material can be enhanced, the fiber can prevent the occurrence of the segregation phenomenon of the concrete, the integral uniformity of a casting body is enhanced, the brittleness of the concrete can be reduced, the toughness of the concrete is enhanced, the crack resistance, the impermeability, the impact and abrasion resistance, the freezing resistance and the explosion resistance of the concrete are improved, and the workability of the concrete is improved; the medium-temperature vinyl resin adhesive is viscous, and the phenomenon of falling can not be generated by mainly adopting a scraping and brushing mode during construction; the prepared C20 polypropylene fiber reinforced concrete is a hard material and has good formability in the glass fiber reinforced plastic imitated simple mould 9; immediately covering a plastic film on the surface of the component after the Roman arc-shaped prefabricated part 11 is formed, curing for 4 hours, demoulding, and generally watering and curing for 7 days according to the air temperature condition and then lifting; after finishing certain batch, the roof is uniformly transported to the roof for installation, polymer bonding mortar is adopted at the contact position of the roof and the parapet wall for bonding during installation, asphalt mortar or weather-resistant cement is adopted for jointing gaps between the members, and a coating surface layer can be sprayed on the surface of the roof according to the uniform color tone of the roof.

Claims (1)

1. A mould of a prefabricated mould of an arc-shaped prefabricated member installed at a roof flashing position comprises a wood arc-shaped bottom template (1), wherein the wood arc-shaped bottom template (1) is formed by bending a wetted Australian pine plate, and the shape and radian of the wood arc-shaped bottom template (1) are completely the same as those of a prefabricated Roman arc-shaped prefabricated member (11), and is characterized in that two ends of the wood arc-shaped bottom template (1) are respectively provided with a wood end plug plate (2), and a support (3) is arranged on the lower bottom surface of the wood arc-shaped bottom template (1); and gypsum mixed slurry (4) is uniformly coated in the grooves of the wood arc-shaped bottom template (1), and the thickness of the gypsum mixed slurry (4) is 3 cm.

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