RM | Raphahcon RM
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Raphahcon RM-Refractories Mortar
Raphahcon RM
Refractories Polymer Mortar
Raphahcon RM is fireproof mortar for recovering, repairing and reinforcing sections
of deteriorated concrete structures.
As a material for repairing and reinforcing structures exposed to the working
environment where the fire resistance is (S.K.)11(1,320℃) or below,
this one ingredient type mortar can be used after being added with just water.
Spray operation becomes easy with this product, and its workability and
economic efficiency have been greatly improved to be suitable
for large-scale repairs.
Features | 1. The product has a high strength, low cracking occurrence, and excellent workability as one ingredient type which only needs to be mixed with water for use. 2. It is economical owing to the low rebound rate of 5% or less and highly durable because it is inorganic like concrete. 3. The result of a fire resistance (S.K.) test is 11(1,320℃), displaying excellent compressive strength even at a high temperature. 4. The product is highly adhesive, anti-rust, neutralization-resistant, chemical-resistant, and chlorine ion penetration-resistant. |
Uses | 1. Concrete structures exposed to high temperature, such as cupolas of steel mills 2. Special concrete structures receiving heat, such as chimneys and silos 3. Concrete structures exposed to high temperature among facilities related to the ceramic industry 4. Concrete structures exposed to high temperature among facilities related to the placing industry |
Properties | One ingredient-type inorganic gray polymer mortar |
Instructions | 1. Treatment of construction surface (1) Chip deteriorated and corroded concrete. (2) Remove dirt, laitance, etc. attached to construction surface in order to improve adhesion. (3) As oil and fat powder significantly reduces the adhesion, these shall be completely removed with an organic solvent.
2. Mixing (1) Put the right quantity water in a mixer, slowly inject Raphahcon RM and mix them with a mixer for over three minutes. (2) Use tap water (clean fresh water) of the temperature between 5℃ and 20℃. (3) Inject about 2/3 of specified moisture, mix for about 1~2 minutes, slowly add the remaining 1/3 water, and check until good workability appears. (4) The right quantity of water shall be achieved when you hold mixed mortar in your hand slightly spreading your fingers, and mortar shall not flow down among fingers. (5) If concrete is kneaded thinly and contains much water, the remainder will not react with alumina cement, rather it forms pores, which shortens the life span. (6) When there is not enough water, the fluidity will decrease, and filling won’t be made properly, causing quality deterioration. Therefore, the right amount of water shall be added. 4. Placing (1) The mixed product shall be immediately placed on construction surface. (2) Placing can be done using a trowel or a spray. (3) For increasing thickness, do spray operation and plastering to a thickness of 0.5-1cm during the first placing, make it 2-5cm thicker during the second and third placings, and finish it with an additional 0.5-1cm of thickness during the final placing. (The adhesion and plastering will get better through doing primary and main placing thinly and re-placing thickly.) 5. Curing and drying (1) Curing shall be done sufficiently for over 24 hours after construction to maintain strength. (2) Be careful during curing because vibration and shock can cause cracks. (3) Temperature of over 5℃ shall be maintained during winter. There is a danger of freezing at night, so insulation shall be done. (4) When a mold is built, cracks may occur when excessive force is applied while dismantling the mold. (5) Thermal resistance can be obtained by removing water used for construction, so drying shall be performed with a proper heat source after construction. (6) Be careful because rapid heating and local heating while drying can cause spalling failure. (7) Dry temperature rising after curing will be adjusted according to construction thickness and construction conditions, but regular standards shall be as follows. (In the case of small construction, dry temperature rising time can be short.) First : 10 hours at 100℃~200℃ Second : 40 hours at 200℃~500℃ Third : 10 hours at 500℃~1000℃ |
Cautions | 1. Protect the application area from rain or snow until it gets dry. 2. Wear protective equipment, such as masks, goggles and gloves, while working. 3. Be careful when curing at a temperature below 5℃. |
Packaging | 25 kg/bag, can keep in dry places for six months |
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