Grouting construction

Basic processing

1. Clean the surface of the foundation without any debris such as crushed stones, floating slurry, floating ash, oil stains, and release agents.

2. 24 hours before grouting, the foundation surface should be fully wetted, and 1 hour before grouting, any accumulated water should be removed.
CGM high-strength non shrinkage grouting material manufacturer Wuxi Jiangyin support grouting material

Stone of different color schemes refers to a type of stone with completely different structures and characteristics, and with completely different or significantly different color compositions. : Golden thread beige and new sago beige, Spanish beige and white sand beige, Shandong white hemp and American grey hemp are all stones of different color systems. For the color difference between them, we recommend using coloring method (staining) for treatment. At present, there are about twenty or so methods for coloring stone, most of which require specific equipment or venues. This is not very realistic for the stone maintenance industry. After years of experience, we believe that using stone dyes for coloring treatment is a simple, convenient, and effective method.

: Support mold

1. Set up templates according to the grouting construction drawing. The joints between templates and foundations, as well as between templates, shall be sealed with cement slurry, tape, etc. to achieve the degree of overall template waterproofing.

2. The horizontal distance between the template and the equipment base should be controlled at around 100mm to facilitate grouting construction.

3. The top elevation of the template should be 50mm higher than the surface of the equipment base.

4. If there is grout leakage during grouting, it should be dealt with in a timely manner.

 
The loads on stone slabs include horizontal wind loads and seismic loads, vertical seismic loads, and the self weight of the stone. And the thermal cracking stress caused by temperature changes. The typical installation system for back bolted dry hanging stone is to fix the stone with 2 sets of upper and lower hangers (a total of 4 sets). The two sets of hangers on the top of the stone support the weight of the stone and constrain it in a direction perpendicular to the stone plane, while the two sets of hangers on the bottom only constrain the stone in a direction perpendicular to the stone plane. When calculating the bending resistance of stone, the stress should be calculated based on the four point support plate. The calculated edge length b. should not exceed the design value of the bending strength of the stone slab for the bending stress obtained; When calculating the shear stress generated by the back bolt pendant on the stone slab, it is generally calculated according to the corresponding empirical formula, and it is required that the standard value of the shear stress on the stone slab is not greater than the design value of the shear strength of the slab.

Step 3: Preparation of grouting material

1. The general reinforced type is mixed with water at a standard of 12-13%, while the pea gravel reinforced type is mixed with water at a standard of 9-10%.

2. It is recommended to use mechanical stirring method, and the stirring time is generally 1-2 minutes. When using manual mixing, 2/3 of the water should be added first and mixed for 2 minutes, then the remaining water should be added and mixed evenly

If the construction conditions are not met, the reinforced mesh cloth should be vertically connected to another wall surface after one completion, with a distance of more than 1mm from the junction. It is forbidden to leave the mesh cloth connection at the junction. Mechanical fixation of insulation board and cutting of insulation board: Wood saws or wire saws are used to cut the insulation board to ensure its regular shape. Mechanical fixation of insulation board: The base layer is made of concrete and fixed with plastic expansion screws and nylon lining rings. The fixed location is selected at the interface of the three insulation boards and the middle part of the insulation board; The dosage shall not be less than 5 pieces per square meter. Polishing of insulation board: After the insulation board is fixed, if there is a height difference at the joint of the board, sandpaper should be used to polish the insulation board, and the 2m flatness deviation after polishing should be controlled within 5mm.

3. The amount of mixing each time should be determined based on the amount used to ensure that the material is used up within 30 minutes.

4. During on-site use, it is strictly prohibited to add any admixtures or external additives to the grouting material.

Step 4: Grouting Construction Method

1. Long equipment or track foundations should be constructed in sections.

2. During secondary grouting, grouting should be carried out from multiple points on one side or adjacent sides until it overflows from the other side, in order to facilitate exhaust during the grouting process. Grouting shall not be carried out simultaneously from all four sides

By treating the surface defects of stone, the impact of stone defects on the surface quality of mosaic can be eliminated, greatly improving the grade and quality of mosaic products. After the final inspection of the mosaic is processed according to the above process steps, the quality inspection personnel also need to conduct a quality inspection on the mosaic, focusing on the size, brightness, graphics, numbering, and surface quality of the mosaic. Packaging and storage of mosaic products are made of stone, and poor packaging can easily cause damage and scratches to the products. Especially for artificial stone products, attention should be paid to the packaging of the products to protect the smooth surface of the mosaic products. The mosaic product is wrapped with pearl cotton or plastic film on the front.

3. After grouting begins, it must be carried out continuously without interruption. And shorten the grouting time as much as possible.

4. Vibration is strictly prohibited during the grouting process. If necessary, a grouting booster can be used to push the grouting material along the bottom of the grouting layer. It is strictly prohibited to push it from the middle or upper part of the grouting layer to ensure its uniformity.

5. After the equipment foundation grouting is completed, a 45 degree oblique angle should be cut outward along the edge of the equipment 3-6 hours after grouting to prevent cracks from forming at the free end. If edge cutting is not possible, the surface of the grouting layer should be smoothed with a trowel 3-6 hours after grouting.

6. The thickness of each grouting material should not exceed 100mm.

At room temperature, radon and its progeny can form radioactive aerosols in the air, polluting the air. Due to its colorless and odorless nature, it is easily overlooked by people, but it is easily intercepted by the respiratory system and accumulates continuously in local areas. Long term inhalation of high concentrations of radon can ultimately induce lung cancer. There are strict standards for indoor radon concentration in various countries. The National Technical Supervision Bureau and the Ministry of Health have issued the "Control Standards for Radon Concentration in Housing", which stipulate that the upper limit of radon concentration per cubic meter of air in newly built buildings is 1 becquerel, and the concentration of radon per cubic meter of air in used old buildings is 2 becquerels. The average level of radon in American indoor air standards is. 15WL; the threshold for radon in housing and schools is. 1WL; and the threshold for radon in corporate buildings is. 3WL.

7. When the grouting volume of the equipment foundation is large, the mixing of pea gravel reinforced grouting material should be done by mechanical mixing to ensure grouting construction.

Step 5: Maintenance

1. Within 30 minutes after grouting is completed, a wet grass curtain or rock wool blanket should be immediately covered and kept moist.

2. During winter construction, maintenance measures should also comply with the relevant provisions of the current GB50204 standard.

3. After the grouting material reaches the demoulding time, equipment installation can be carried out. For specific time, please refer to the "Relationship Table between Demoulding and Curing Time and Environmental Temperature".

4. After the grouting of the equipment foundation is completed, if any parts need to be removed, they can be gently removed with a spatula or shovel tool 3-6 hours after the grouting is completed, before the grouting layer hardens.

5. The vibration of the running machine should not be transmitted to the equipment foundation. After the secondary grouting, the machine should be stopped for 24-36 hours to avoid damaging the uncured grouting layer.

Huian has become a national production and export base for stone handicrafts with the largest scale, advanced technology, the most complete variety, and processing capabilities. The stone carving and stone industry has a prominent position. In the decision to establish the stone carving and stone industry as the dominant force in national economic growth, policy support is implemented to promote the continuous development and growth of stone carving and stone enterprises, further highlighting their position as a pillar industry and accelerating the pace of outward economic development. There are 1185 stone carving enterprises with 19500 employees in the county. There are 9 stone carving production enterprises with an output value of over 50000 yuan and 183 enterprises with an output value of over 10 million yuan, accounting for 56.3% of the county's backbone enterprises. More than 15 enterprises have an export value of over 50000 yuan and have paid taxes of 135 million yuan. The output value of stone handicrafts accounts for one-third of the county's total industrial output value, and stone carving has formed a scale.

Recommended dosage

Calculate the actual usage based on a reference dosage of 2.28-2.4 tons/cubic meter.

Packaging, storage and transportation

1. Packaging specifications: 50kg ± 1kg per bag, stored in a ventilated and dry place and protected from direct sunlight.

2. The shelf life is 3 months. If it exceeds the shelf life, it should be retested and qualified before use.

3. Does not contain components such as benzene derivatives, halogenated hydrocarbons, heavy metals, etc., non-toxic, odorless, pollution-free, non flammable and non explosive, and can be transported as general cargo