CN110847485A - A method of recombining bamboo-foam concrete composite board wall - Google Patents

Abstract

The invention discloses a method for manufacturing a recombined bamboo-foam concrete combined plate wall, which cuts a recombined bamboo plate into square plates as an inner plate and an outer plate, wherein the left side and the upper side of the inner plate and the outer plate are made into convex ribs, the corresponding lower side and the right side are made into grooves, holes are respectively drilled at the four corners and the plate center of the inner plate and the outer plate, then fireproof cotton is paved at one side of the inner plate and one side of the outer plate, a plurality of groups of recombined bamboo grids are manufactured on the side where the fireproof cotton is paved at the inner plate and the outer plate, the inner plate and the outer plate are connected, the recombined bamboo grids are connected by adopting cross braces to be used as horizontal supports, and split bolts are utilized to penetrate. The method uses the recombined bamboo as the panel, and has good stress performance and earthquake resistance; building waste renewable resources are utilized to prepare foam concrete which is used as a wallboard core material, so that the effects of resource recycling, energy conservation and emission reduction are realized; the combination of organic material and inorganic material improves the function limitation of the wall board made of single material.

Description

A method of recombining bamboo-foam concrete composite panel wall

technical field

The invention belongs to the field of construction engineering, in particular to a method of recombining bamboo-foam concrete composite slab walls.

Background technique

Building energy conservation and emission reduction has become an important way to solve the global energy crisis and environmental pollution. With the acceleration of my country's urbanization, building energy consumption will inevitably become an important growth point of energy consumption. Therefore, vigorously developing building energy conservation is the top priority of my country's energy conservation work. middle.

Bamboo is a natural renewable material with short growth cycle and abundant resources. Reconstituted bamboo is a bamboo-based composite material formed by pressing and gluing bamboo bundles as a unit. Reconstituted bamboo has good mechanical properties and is widely used in furniture, indoor and outdoor floors, and structural materials.

The development and use of thermal insulation materials that are safe, fireproof and convenient for construction is a new development direction in the field of wall building materials. Foamed concrete has the advantages of light weight heat insulation, heat preservation and fire prevention. Compared with other insulation materials, the strength of foamed concrete is greatly improved, and its performance is excellent.

It is difficult for a single type of building material to meet the current building needs for energy conservation and emission reduction. It is a new direction for the development of building materials to choose different types of building materials for combination, complement each other, and give full play to the excellent performance of each material.

At present, China's aging population is serious, labor is scarce, and prefabricated structures with convenient construction will become more and more important.

Patent Publication No. CN106760062A discloses a method of recombining a bamboo structure for a combined wall. This patent discloses a method for combining a wall panel, but the combined wall panel is based on a reconstituted bamboo structure, and its application is limited. In addition, the composite wall panel is a wall panel made of reconstituted bamboo as a wall stud, not a pure reconstituted bamboo composite wall panel.

Publication No. CN 106760356 A patent discloses a reconstituted bamboo wallboard, and this patent discloses a method of reconstituting bamboo wallboard only after convenient connection, but this wallboard is a single reconstituted bamboo wallboard, which does not have good thermal insulation, absorption sound, fire performance.

Publication No. CN 106836513 A patent discloses a reconstituted bamboo wall panel, which discloses a reconstituted bamboo wall panel with novel and reasonable structure, convenient connection of adjacent wall panels, flexible operation and strong practicability. However, this wallboard is a single reconstituted bamboo wallboard, which does not have good thermal insulation, sound absorption and fire resistance.

Publication No. CN 106609584 A patent discloses an environmentally friendly regenerated bamboo wallboard and a production process thereof, which is characterized in that while the wallboard is stably fixed on the wall, people can hardly notice the splicing line of the entire wallboard, The integrity is very good. But it does not have good thermal insulation, sound absorption, fire performance.

Publication No. CN 204238498 U patent discloses a reconstituted bamboo composite wall. This patent discloses a reconstituted bamboo wallboard for wall decoration, including a wall vertical plate, an elastic pressing plate and a reconstituted bamboo wallboard. However, this patent has poor performance in thermal insulation, sound absorption and fire protection.

Therefore, we urgently need a composite wall panel with excellent performance, rich resources and convenient construction.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a method of recombining bamboo-foam concrete composite board wall in construction engineering.

The technical problem to be solved by this invention is realized through the following technical solutions:

Cut the reconstituted bamboo board into square boards as the inner board and the outer board. The left and upper sides of the inner board and the outer board are made into convex ribs, and the corresponding lower and right sides are made into grooves. Holes are punched in the center of the board, and then fire-proof cotton is laid on one side of the inner and outer boards respectively. The side of the inner and outer boards covered with fire-proof cotton is made of multiple groups of reconstituted bamboo grilles. The horizontal bracing is used as the horizontal support, and the inner and outer plates are fixed through the holes through the use of the tension bolts;

Pour foam concrete into the above wall panels and prefabricate the wall panels; lay out lines on the ground, left and right columns or walls of the floor where the wall panels are installed, and install two rows of angle steels at the installation position of the wall panels with expansion bolts. The first layer of wall panels is installed and connected with angle steel with wooden bolts; then all the wall panels are spliced and installed into walls of the size required by the project with prefabricated grooves and raised ribs, and connected with beams, columns and floor slabs with connectors, and finally Apply outdoor oil to the outer panel of the mounting wall.

The reconstituted bamboo indoor board refers to pressing the reconstituted bamboo into a reconstituted bamboo board with a density of 0.7-1.0 g/cm3.

The reconstituted bamboo outdoor board refers to pressing the reconstituted bamboo into a reconstituted bamboo board with a density of 1.1-1.3g/cm3.

The reconstituted bamboo grille refers to the use of reconstituted bamboo between the inner and outer panels to fix the inner and outer panels and enhance the strength and stability of the core foam concrete. ×20mm.

The foamed concrete is made by using the recycled resources of construction waste, the compressive strength is 0.1-0.5MPa, and the dry apparent density is 300-500kg/m ³ .

The fireproof cotton is ceramic fiber, which can be aluminum silicate ceramic fiber.

The tension bolts described are ordinary bolts, models M6-M8.

The expansion bolts are ordinary expansion bolts, models M6-M8.

The wood bolts are ordinary wood bolts, the models are M6-M8, and the surface is galvanized, which can be determined according to the actual engineering conditions and stress.

The outdoor oil is a polymer compound, which can be tung oil.

The connecting piece is equilateral angle steel, the size is ∠25×25mm～∠100×100mm, and the specific size can be determined according to the thickness of the wallboard.

Compared with the existing domestic and foreign wall panels, the present invention has significant technical advantages: 1. The reconstituted bamboo is used as the panel, which has good mechanical performance and seismic performance; Realize the effect of resource recycling, energy saving and emission reduction; 2. The combination of organic materials and inorganic materials improves the functional limitations of wall panels made of a single material.

The invention will be described in further detail below with reference to the accompanying drawings.

Description of drawings

Figure 1 is a structural layout diagram of the reconstituted bamboo-foam concrete composite panel wall.

Figure 2 is a diagram of a single wall panel of the reconstituted bamboo-foam concrete composite panel wall.

FIG. 3 is the A-A sectional view corresponding to the recombined bamboo-foam concrete composite panel wall and FIG. 2 .

FIG. 4 is a B-B sectional view corresponding to the reconstituted bamboo-foam concrete composite panel wall and FIG. 2 .

Figure 5 is the mechanical property test diagram of the reconstituted bamboo-foam concrete composite panel wall, (a) is the compressive strength test; (b)

For shear strength test; (c) flexural strength test; (d) tensile strength test.

In the picture: 1—reconstituted bamboo indoor panel; 2—fireproof cotton; 3—reconstituted bamboo grille; 4—foamed concrete; 5—reconstituted bamboo exterior panel; 6—expansion bolt; 7—wood bolt ; 8 - angle steel; 9 - wall panel; 10 - beam; 11 - column.

Detailed ways

In order to illustrate the technical solution and technical purpose of the present invention, the present invention will be further introduced below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4, a method of recombining bamboo-foam concrete composite slab wall:

Cut the reconstituted bamboo board into square boards as the inner board and the outer board. The left and upper sides of the inner board and the outer board are made into convex ribs, and the corresponding lower and right sides are made into grooves. Holes are punched in the center of the board, and then fire-proof cotton is laid on one side of the inner and outer boards respectively. The side of the inner and outer boards covered with fire-proof cotton is made of multiple groups of reconstituted bamboo grilles. The horizontal bracing is used as the horizontal support, and the inner and outer plates are fixed through the holes through the use of the tension bolts;

Pour foam concrete into the above wall panels and prefabricate the wall panels; lay out lines on the ground, left and right columns or walls of the floor where the wall panels are installed, and install two rows of angle steels at the installation position of the wall panels with expansion bolts. The first layer of wall panels is installed and connected with angle steel with wooden bolts; then all the wall panels are spliced and installed into walls of the size required by the project with prefabricated grooves and raised ribs, and connected with beams, columns and floor slabs with connectors, and finally Apply outdoor oil to the outer panel of the mounting wall.

The specific method and installation plan are to cut the reconstituted bamboo board into a 600mm×600mm square board, make convex ribs on the left and upper sides of the inner board and outer board respectively, and make grooves on the lower and right sides, and the four corners of the board are 10mm away from the edge. Punch holes in the center and the center of the board, lay fireproof cotton on one side of the inner and outer boards with adhesive, use a nail gun to make a reconstituted bamboo grille on the side of the board covered with fireproof cotton, connect the inner and outer boards, and the grille The spacing is 100mm-150mm, the section size is 10mm × 10mm ~ 20mm × 20mm, and the length is 100mm-200mm. The grids are connected by horizontal braces as horizontal supports, and the inner and outer plates are fixed by the pull bolts through the holes. Put the finished reconstituted bamboo board frame into the grinding tool, brush the adhesive on the fireproof cotton, pour the foam concrete immediately, put it in the curing room for curing for 28 days, take out and cut off the excess foam concrete outside the frame.

The construction of the main structure is completed first, and the acceptance is qualified. In the construction line, use impact to punch holes, install two rows of angle steel on the ground, floor, left and right columns or walls, the angle steel angle is opposite, the spacing is the thickness of the wall plate, and the angle steel is connected to the ground through expansion bolts. The spacing of bolts along the direction of the angle steel is not more than 600mm;

Put the first wall panel on the first layer into the angle steel, and connect it with the angle steel with ordinary bolts. The distance between the bolts along the angle steel direction is not more than 600mm; And connect with the angle steel with wooden bolts, and the distance between the wooden bolts along the angle steel is not more than 600mm. And so on, install all the wall panels on the first floor. Connect the upper, lower, left, and right grooves with raised ribs, and install the remaining wall panels until the top layer. The size of the corner wall panels can be cut by a cutting machine, and the raised ribs are cut off at the corners of the wall panels for stable connection with the angle steel. Apply a layer of outdoor oil to the outer panel of the installed wall panel.

Example 1

(1) Wall panel production

Ⅰ. Use reconstituted bamboo to make wall panel, the size is 600mm×600mm, the thickness is 20mm, the edges are made of convex ribs and grooves, and one side of the panel is covered with fireproof cotton;

Ⅱ. Connect the inner and outer plates with the tension bolts and the grille, the size of the grille is 10mm×10mm, and the spacing is 150mm;

Ⅲ. Use waste concrete to make foam concrete, which is used as the core material of wallboard, pouring and curing.

Ⅳ. Use the ribs and grooves on the side to assemble the wall panels, and fill the joints with foaming agent.

(2) Mechanical properties test

The mechanical strengths of the reconstituted bamboo indoor panels and outdoor panels measured by the material test are shown in Table 1:

Table 1 Test data of mechanical properties of recombinant bamboo

(3) Thermal performance test:

According to "Determination, Calibration and Protective Hot Box Method of Adiabatic Steady State Heat Transfer Properties" GB/T13475-2008, the thermal performance data of reconstituted bamboo foam concrete are as follows:

Table 2 The thermal performance test data of the reconstituted bamboo-foam concrete composite wall panel

According to the "Design Standard for Energy Conservation of Juqiao Buildings in Hot Summer and Cold Winter Areas" JGJ134-2010, the heat transfer coefficient and thermal inertia index of building exterior walls are limited to determine the thermal insulation performance of the reconstituted bamboo-foam concrete composite wall panel. Meet the energy-saving design standards for residential buildings in summer and winter cold areas.

Claims (10)

1. a method of reorganizing bamboo-foam concrete composite panel wall, it is characterized in that, the reorganization bamboo board is cut into square board as inner board, outer board, the left side and upper side of inner board, outer board make convex rib, corresponding Make grooves on the bottom and right sides, punch holes at the four corners of the inner and outer panels and in the center of the panels, and then lay fire-resistant cotton on one side of the inner and outer panels, and lay the inner and outer panels on the side with the fire-resistant cotton to make Multiple groups of reconstituted bamboo grilles are used to connect the inner and outer panels. The reconstituted bamboo grilles are connected by horizontal braces as horizontal supports, and the inner and outer panels are fixed by means of tension bolts through the holes; Pour foam concrete into the above wall panels and prefabricate the wall panels; lay out lines on the ground, left and right columns or walls of the floor where the wall panels are installed, and install two rows of angle steels at the installation position of the wall panels with expansion bolts. The first layer of wall panels is installed and connected with angle steel with wooden bolts; then all the wall panels are spliced and installed into walls of the size required by the project with prefabricated grooves and raised ribs, and connected with beams, columns and floor slabs with connectors, and finally Apply outdoor oil to the outer panel of the mounting wall. 2. the method of reconstituted bamboo-foam concrete composite panel wall according to claim 1, is characterized in that, reconstituted bamboo indoor panel refers to that reorganized bamboo is pressed into density and is 0.7～1.0g/cm Reorganized bamboo panel. 3. the method for reconstituted bamboo-foam concrete composite panel wall according to claim 1, is characterized in that, described reorganized bamboo outdoor panel refers to that reorganized bamboo is pressed into density and is 1.1～1.3g/cm Reorganized bamboo panel. 4. the reorganized bamboo-foam concrete composite panel wall method according to claim 1, is characterized in that, described reorganized bamboo grill refers to that reorganized bamboo is used between inner plate and outer plate, to fix inner and outer plates, Strengthen the core material foam concrete strength and stability components, the spacing is 100mm ~ 150mm, and the section size is 10mm × 10mm ~ 20mm × 20mm. 5. The method of recombining bamboo-foamed concrete composite slab wall according to claim 1, wherein the foamed concrete is made from construction waste recycling resources, and has a compressive strength of 0.1 to 0.5 MPa, and a dry apparent density of 0.1-0.5 MPa. 300～500kg/m ³ . 6 . The method of recombining bamboo-foam concrete composite board wall according to claim 1 , wherein the fireproof cotton is ceramic fiber, which can be aluminum silicate ceramic fiber. 7 . 7. the method of reorganizing bamboo-foamed concrete composite slab wall according to claim 1, is characterized in that, described tie bolts are common bolts, model M6-M8; Described expansion bolts are common expansion bolts, model M6 -M8. 8. the method of reorganizing bamboo-foam concrete composite board wall according to claim 1, it is characterized in that, described wooden bolt is common wooden bolt, model is M6～M8, surface galvanized treatment, concrete can be according to actual engineering situation and force determination. 9. The method of recombining bamboo-foamed concrete composite panel wall according to claim 1, wherein the outdoor oil is a macromolecular compound, which can be tung oil. 10. The method of reconstituting bamboo-foamed concrete composite panel wall according to claim 1, wherein the connecting piece is an equilateral angle steel, and the size is ∠25×25mm～∠100×100mm, and the specific size can be determined according to the wall Plate thickness is determined.

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