Concrete Admixtures

  TDS Technical Document Sheet   

  CE Document   

Product Description
lts a cement based special mortar which increases the adherence between old concrete and new concrete, containing corrosion inhibitor and silica fume to protect the reinforcement against corrosion.

Areas of Usage
• lts used in engineering structures such as subways, highways, tunnels, dams,
• in repair and strengthening works,
• in order to prevent corrosion of UV exposed iron or ironstone which are likely to wait for a long time,
• in order to increase the adherence of structural repair mortar in concrete repair,
• in water ponds and all concrete applications.

Features and Benefits
• Excellent adhesion to reinforcement and concrete
• it has good water impermeability.
• it protects the reinforcement against moisture.
• it has high early and final hardness feature.
• High mechanical strength.
• it is not toxic.
• Easy to apply.
• it has single component, is used only by mixing with water

Application lnstructions
Surface Quality: The surfaces must be clean, smooth, solid, free from any antiadhesive substance such as dust, oil, dirt, rust, mold oil, detergent and waste. Weak parts should be removed.

Surface Preparation: Concrete floor should be damp but there should be no water accumulation.

Mixing: 3.5 - 4.0 it clean, clear water received from normal ambient temperature into a clean container which is free from all kinds of materials which prevent adhesion. TEKNO AD in 20 kg bag as powder is poured into a container filled with water. The product is mixed with a low speed mixer until a homogeneous mixture without lumps is obtained. Mixing time should be at least 5 minutes, the mortar obtained at the end of the process should be rested tor 3 minutes and mixed again until it becomes homogenous tor 2 minutes. After mixing, it is applied to the pre-cleaned and moistened surface by brush, roller or spray. lntermittent mixing is recommended during application to avoid condensation in the material. After applying TEKNO AD, concrete must be cast within a short time (as wet on wet) or repair mortar must be applied.Application Notes/RestrictionsWhen used to protect reinforcement against corrosion, the first layer is applied to the cleaned reinforcement in a thickness of 1 mm by means ofa medium hard brush, roller or spray, the second layer is applied in a similarthickness after about 4-5 hours (for 20°C).

Application Notes / Restrictions
• The product may be irritating to the skin; work clothes, protective gloves, masks and glasses must be used. Protective cream can also be applied before starting work.
• in case of grout contact with eyes, eyes should be washed immediately with warm water and consult a doctor.
• Do not add foreign substances.
• lf 4 hours last after treatment on the prepared TEKNO AD, the mixture should be prepared and applied again.
• it must be protected after application against adverse weather conditions such as direct sunlight, high air temperature (above +35°C), rain and frost. The product should be cleaned thoroughly with water and detergent before it is fully cured and hardened.
• lmmediately after application, before hardened, the equipment should be cleaned with water. After the product is hardened, it should be cleaned by mechanical methods.