DEZOSIVE AS -32
Shrinkage compensated, polymer fibre reinforced, thixotropic repair mortar
Description:
DEZOSIVE AS-32 is a ready-to-use repair mortar based on cement, which after adding the necessary water creates a repair paste with fibers and high strength.
DEZOSIVE AS-32 is a non-shrinking mortar with low permeability and long durability.
This mortar does not contain metal granules and is free of chlorine ions.
DEZOSIVE AS-32 is designed to be used by spraying or troweling system and can create up to 50 mm thickness in one step. More thicknesses can be used by spraying method.
This product is formulated to be resistant to sulfates.
Uses:
• Repairing structures exposed to sewage or sulfates
• All structural repairs that can be used by spraying or troweling.
• Repairing all building components that are under frequent loading.
• Repair of prestressed or reinforced beams and columns.
• In order to protect concrete structures exposed to aggressive factors such as chloride and sulfate.
• Structural repairs in industrial areas, especially those exposed to mineral oil and hydraulic oil
• Repairs of marine structures.
Properties:
- The non-shrinkage of the mortar ensures a good connection to the concrete bed and the transmission of forces in structural repairs.
- There is no need to prepare (primer) the substrate and this accelerates the execution operation.
- The ability to spray mortar makes it possible to implement large quantities.
- There is little material waste during spraying, and this issue will save the cost of providing materials.
- Its very low permeability reduces the possibility of environmental corrosive attacks to the lowest possible amount.
Packing:
DEZOSIVE AS-32 is supplied in 25 kg packaging.
Attributes:
Appearance: Gray powder containing fine fibers
Specific weight of dough: about 2300 kg per cubic meter
Compressive strength at 20°C as per BS1881 Part 11
1 day more than 16 MPa
28 days more than 45 MPa
Procedure
Substrate preparation:
The intended surface should be clean and free of any polluting materials, and the weak and weak points of the concrete should be identified and destroyed.
These areas are cut to a depth of 10 cm and care should be taken to have a sharp corner and square shape where possible. Also, maintain a minimum thickness of 10 mm around the repaired area.
The desired surface must be damaged and have at least 5 mm unevenness with 20 mm intervals.
If contaminated and loose surfaces are dealt with, it is better to coordinate with the supervisor of the workshop so that possible cleaning and cutting can be done.
If you see rusted reinforcements, first ensure its internal health, then remove the rust by brushing or sandblasting to reveal a clean steel surface.
It will be possible to double protect the reinforcements by special coatings. In cases where the reinforcements are severely corroded, they should be replaced.
Impregnation with water:
Saturate the desired surface completely by washing with water, then collect the excess amounts from the surface.
Mixing:
The best way to make DEZOSIVE AS-32 mortar is to use a mixing tool (drill) with low speed. Pour 3.5 liters of water into the mixer and while the mixer is running, add DEZOSIVE AS-32 dry powder to the water continuously. After the powder is completely added to the water, continue stirring for 3 minutes until a uniform mixture without large bubbles is created. If the above mixture does not have the desired concentration, you can gradually add water to it and leave for 1 to 2 minutes. He continued to stir. Obviously, the amount of water required is influenced by relative humidity and ambient temperature.
Performance:
The prepared mixture can be applied manually or sprayed, and in case of manual application, the trowel should be pressed on the surface of the mortar to ensure complete contact between the mortar and the previous surface. For this purpose, use a plastic or wooden trowel, but the finishing work Finish with a metal trowel.
The best time for finishing work is when fingerprints are barely visible on the surface of the repair mortar.
Good performance is essential especially in hot or windy conditions
For this purpose, Dezocure D-550 or nylon coating can be used.
Covering:
The volume of the mixture obtained from a 25 kg bag of DEZOSIVE AS-32 and 4 liters of water will be 12.6 liters, which can be used to cover one square meter with an average thickness of 12.6 mm.
Inventory:
It can be kept away from rain and direct sunlight for up to one year without bearing too much pressure.
Safety tips:
Like other cement mortars, plenty of water should be used for washing when in contact with the skin or eyes.
Quality confirmation:
All the products offered by Iran Technical and Specialized Concrete Clinic are in accordance with international quality standards.