Thermal insulation rock wool construction safety protection, rock wool insulation board in the const

Rock wool, the most important thing is fine fibers, which is very harmful to the human body and the respiratory tract.

It is recommended that you wear the following protective equipment:

Protective clothing, protective masks, protective gloves, and if you are working at height, you also need to wear safety helmets, safety shoes, etc.

The same safety measures as benzene boards.

The thermal insulation performance of rock wool insulation board has always been very good, especially at room temperature, its thermal insulation performance is much better than that of other thermal insulation boards. In addition, the sound insulation effect of rock wool is also quite good, and it is widely used in Europe and North America. However, the following points should be paid attention to in the construction of rock wool insulation board:

1.The facilities and pipelines that need to be insulated should have no leakage, the surface is dry, no grease, no rust Under some conditions of orange oranges, in order to facilitate anti-corrosion, appropriate coating can be taken.

2.In order to achieve the purpose of minimum heat loss, all joints of the board and felt must be very tightly docked, and the cross joints should be staggered when multi-layer insulation, so as not to form a thermal bridge, and the cold bridge must be eliminated when keeping cold.

3.Rock wool products are used for outdoor insulation or in places prone to mechanical wear and tear, metal or plastic wrapping, and pay attention to the sealing of joints and seams, add rubber seals if necessary, and the overlapping part of the wrapping layer is not less than 100mm.

4.In the case of particularly low temperature, the resin-free rock wool is used for insulation, and the sock ruler is thick to prevent the tidal layer from being trapped.

5.When the temperature exceeds 200 °C, the insulation must be covered with a suitable outer shield so that the possible expansion does not change the thickness and bulk density.

6.For large-diameter or flat-walled equipment with rock wool products insulation, insulation nails should be added when more than 200, and the outer protection (spacing 400mm) should be tightened.

7.When the insulation object is placed vertically and has a considerable height, the insulation layer must have a positioning pin or support ring, and the spacing should not be greater than 3m to prevent the insulation from sliding down when there is vibration.

8.Outdoor thermal insulation and cold insulation construction should not be carried out in rainy days, otherwise rainproof measures should be taken.

If the construction of rock wool ballast board is treated sloppily, then it is likely to lead to the use of rock wool but the effect cannot be achieved.

What are the specific contents of the interface treatment of the external wall of the rock wool board, what is the construction process of the external wall insulation system of the rock wool board, and how to install the rock wool board.

1. Interface treatment of the base layer of the outer wall of the rock wool board.

The wall should be cleaned, cleaned of oil stains, and swept up with floating ash. The loose and weathered parts of the wall should be removed. Wall tables.

When the surface protrusion is larger than 10mm, it should be removed.

In order to make the base interface adhesion system.

1. Homogeneity, the wall should be treated at the interface, and the interface mortar can be evenly coated with a spray gun or roller brush to ensure that all the walls are treated at the interface. Brick walls and aerated concrete walls should be drenched and moistened before interface treatment, and when blocking the feet and hands and abandoned holes, the debris and dust in the hole should be cleaned up, watered and moistened, and then filled with 1:3 cement mortar.

2. The construction process of the external wall insulation system of the rock wool board is qualified for the acceptance of the screed layer of the base wall and the cleaning tools, the materials are prepared to hang the reference line, the base bracket is installed, the polymer modified adhesive is prepared for the rock wool board paste surface, and the rock wool board is pasted on the interface treatment (the end part is pasted with a mesh cloth), including the mortar painting of doors and windows.

Rock wool board caulking treatment, and trimming rock wool board leveling and verticality inspection, acceptance, preparation of polymer modified anti-cracking slurry, rock wool board interface anti-crack treatment, welded wire mesh paving the first uniform plastering surface, and embedding welded wire mesh (uneven places with plastic card flattening), installation anchor bolt installation anchor second plastering smoothing, embedded glass fiber mesh cloth third plastering smoothing, and repair leveling engineering acceptance, wall paint whitewashing.

3. The key points of the construction of the external wall insulation system of the rock wool board are the first step of the base treatment, the elastic control line and the hanging reference line are to ensure that the flatness and verticality of the rock wool board installation meet the requirements, and the elastic control line and the hanging reference line are required.

4. Install rock wool board (frame adhesive method + expansion bolt anchorage).

Rock wool should be evenly coated with interface mortar on both sides of the rock wool board with special interface mortar in the factory or construction site in advance. The interface mortar can be coated by spraying, roller coating, and brushing.

When pasting the rock wool board, first evenly wipe about 5 10mm thick rock wool adhesive mortar on the wall, and then paste and gently knead and squeeze the surface of the rock wool board after smoothing it with adhesive mortar, and it is strictly forbidden to pat the surface of the rock wool board. After 24 hours, the next construction process will be carried out.

When the rock wool board encounters a non-standard size when it is pasted, it can be cut on site. When cutting, attention should be paid to the neat size of the edge, and the cut should be perpendicular to the polystyrene plate surface. When pasting, it should be pasted in accordance with the bottom-up and horizontal directions, and the upper and lower staggered joints should be pasted, and the corners of the wall should be staggered and interlocked.

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1. Before construction, according to the design and the requirements of this regulation and the relevant technical standards, the special construction plan for energy conservation and thermal insulation of the project should be prepared, and the construction personnel should be given technical disclosure and professional technical training.

2. The following conditions should be met for rock wool insulation construction:

The base wall and its cement mortar screed treatment and embedded parts have been installed.

The necessary construction equipment and labor protection supplies should be prepared.

The special scaffolding for construction should be erected firmly and the safety inspection should be qualified. The spacing between the scaffold pole and the horizontal pole and the wall, and the corner of the wall should meet the construction requirements.

The base wall should be solid and flat, the surface is dry, there shall be no cracking, hollowing, loosening or alkali, the bonding strength, flatness and verticality of the cement mortar screed layer should meet the requirements of the quality of ordinary plastering projects in GB50210 (building decoration engineering quality acceptance specification).

3. When using rock wool board for construction, operators should wear labor protection equipment, do a good job of occupational health protection, and pay attention to construction safety.

4. The pasting of rock wool board should be done by strip sticking method or point sticking method, and the gluing area should not be less than 50%. After the rock wool board is smeared with adhesive, the lower end of the insulation board should be pasted with the base layer, and the rock wool board should be laid horizontally along the horizontal direction from bottom to top, and should be anchored while paving, and the board seam should be naturally tight, and the gap between the boards should not be greater than 2mm.

1. The pasting of rock wool board should be done by strip sticking method or point sticking method, and the gluing area should not be less than 50%. After the rock wool board is smeared with adhesive, the lower end of the insulation board should be pasted with the base layer, the rock wool board should be laid horizontally along the horizontal direction from bottom to top, and should be anchored while paving, the plate seam should be naturally close together, the gap between the plates shall not be greater than 2mm, such as when the seam width is 2mm, there should be a thermal insulation material filling treatment, the adjacent board surface should be flush, and the height difference between the plates shall not be greater than.

2. If the veneer layer is found to fall off during the construction process, it should be fixed by bonding or anchoring with anchors in time, and the construction of the exterior finishing layer should be carried out in time.

3. After the rock wool board is pasted, the plastering surface of the board should be treated on the surface, and the entire surface should be coated with scraping surface mortar (thickness 1) with a stainless steel spatula, and pressed into the surface fiber of the rock wool board.

4. The plastering paste should be configured in strict accordance with the product instruction manual, and the configured adhesive should avoid direct sunlight and should be used up within 2 hours.

5. The plastering layer is divided into two layers. The thickness of the first layer of plastering glue is 2 3mm, which should be plastered with a stainless steel serrated spatula first, then smoothed with a large spatula, and pressed into the glass fiber mesh while wet, and the anchor is installed when the glue is slightly dry and hard enough to be touched, and the anchor plastic disc and its surroundings are blocked with plastering mortar; The first layer of plastering glue is slightly dry, and the second layer of plastering mortar can be constructed, with a thickness of about 2mm, smoothing and making the thickness of the plastering layer meet the design requirements.

6. The laying of the mesh should be smoothed and straightened, and the squareness and verticality of the yin and yang angles should be maintained, and there should be lap joints between the upper and lower parts of the mesh and the left and right, and the lap width should not be less than 100mm; The fiberglass mesh shall not be directly laid on the surface of the rock wool board, nor shall it be exposed, and shall not be dry lapped.

7. The installation of anchors should be according to the position required by the design, with a percussion drill or electric hammer drilling, the drilling depth should be greater than the anchorage depth of 10mm, the anchor nails should be knocked into or screwed into the wall during installation, the disc should be close to the first layer of mesh cloth, and the disc and its periphery should be covered with plastering glue in time.

1. Grassroots treatment. The base wall should be solid and flat, and the surface should be free of foreign matter, dirt and other adhesions that affect the bonding.

2. Mixing of adhesive mortar. The adhesive should be prepared on site, and the stirred adhesive should be protected from direct sunlight; The coagulated adhesive should not be stirred with water.

3. Pre-paste the flip bag mesh cloth. Before pasting the rock wool board, the insulation terminal is pasted with a 300mm wide alkali-resistant mesh cloth first, and the size of the rock wool board and the bag is not less than 100mm, and the alkali-resistant grid cloth strip is laid on the adhesive mortar that is wiped on the base layer, and evenly pressed into the adhesive with a stainless steel trowel, so that the remaining part of the mesh cloth is thrown out for future rebaging.

4. Paste the rock wool board. Before pasting, the aluminum alloy base bracket should be nailed to the base wall with a bracket. The length of the rock wool board should not be greater than 1200mm, and the width should not be greater than 600mm.

When pasting rock wool, the adhesive should be applied to the back of the rock wool. Before pasting the rock wool board, check whether the rock wool board is dry and whether the surface is smooth and clean; Wet, uneven surface, and polluted rock wool boards shall not be used.

5. Install the first batch of anchor bolts. After the rock wool board is pre-fixed with adhesive mortar, the first batch of anchors can be drilled and installed after an interval of 24 hours, and the number of the first batch of anchors should be 30% of the total number of designed anchors.

6. Batch coating surface mortar and hanging net. After the rock wool board is pasted for 1-2 days, the construction of the plastering protective layer can be carried out; Wipe the first plastering mortar on the rock wool board, with a thickness of 2mm-3mm, and press it into the alkali-resistant mesh cloth while it is wet.

7. Install the anchor bolt and batch coating surface mortar for the second time. Generally, after 12 hours, when the mortar is slightly dry and hard enough to touch, the second batch of anchors is installed, and the number of anchors in the second batch should be 70% of the total number of designed anchors. In order to achieve a better waterproof and thermal insulation effect, the installed anchors are coated with surface mortar in batches, and the anchors are required to be fully covered.

After the glue is completely dry, a large area of plastering mortar is applied in batches. After the construction of plastering mortar, the flatness, verticality and square angle of the anti-crack protective layer should be checked, and the plastering mortar should be used for repair if it does not meet the requirements.

8. Install and accept, and prepare to enter the next process.