EN 934-2 TABLE: 7 AYDOS-AYDOSPER
Hardening accelerating admixture

Admixtures for concrete; Material added during the mixing process of concrete in a quantity not more than 5 % by mass of the cement content of the concrete, to modify the properties of the mix in the fresh and /or hardened state. Hardening accelerating admixture; Admixture which increases the rate of development of early strength in the concrete, with or without affecting the setting time.

Chemical Properties
EN 934-2 Çizelge 1 - General requirements

Performance requirements
EN 934-2 Çizelge 7 Specific requirements for hardening accelerating admixtures (at equal consistence)

Areas Of Application

• • Where it is required to speed up the setting of the concrete,
• • When pouring concrete where it is intended to protect the concrete from the frost action and ensure high early strength,
• • Where it is necessary to mold early or load the molds quickly,
• • In ready-mix concrete, in pouring precast and prefabricated concrete.
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Properties / Advantages

• • Improves the resistance of concrete to freezing under cold climatic conditions.
• • Ensures achieving high early strength.
• • Ensures easy removal from the mold.
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Application/Warning

• • Is used by adding into the mixture water of concrete or directly mixing into the fresh low-slump concrete. Should not be directly added onto the dry mixture.
• • After adding 60-70% of the water to be added into the mixture, Should be mixed with the remaining water and then added into the mixture.
• • In case of directly adding into the fresh concrete, the mixing time should be prolonged for minimum 1-2 minutes at high speed and such mixing time should be determined during laboratory tests.
• • In case of using the admixture in the amount exceeding the specified use range, the setting time of the concrete may be prolonged. In such cases, the concrete should be kept humid to allow for curing until it hardens.
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Suitability

• • Suitable for use with all types of concretes with or without admixtures.
• • In case it is desired to use high amounts of cements, it is used along with mineral additives such as fly ash, micro silica and cinder.
• • In order to increase the freezing-thawing resistance, it is used together with air entraining "Aydos® Conair 100".
• • Steel, polypropylene and organic fibers may be used against shrinkage cracks.
• • It is recommended to perform tests prior to using the products.
• • In case of mixing with other admixtures, the performance of the product decreases. Mixing and storage equipment should be properly cleaned. Admixtures should not be stored by mixing together.
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Storage/Shelf Life

Original, unpacked and undamaged products (drums, barrels, containers IBC) should be stored away from direct sunlight and frost at temperatures from +5ºC to +35ºC. In case the product is stored in an unsuitable environment and it freezes, the product should be thawed at ambient temperature without using direct heat and should be stirred using mechanical methods until it is homogenous. When stored under suitable conditions, the shelf life of the product is 12 months from the date of production.

Health and Safety

Please use protective clothing, protective gloves, full goggles and a face mask according to Occupational Health and Safety Regulation. Avoid contact with skin and eyes. In case of contact, rinse with plenty of water. In case of digestion, please seek medical attention. For transportation, storage, disposal of the product, its physical, ecological, toxicological information and other details and recommendations please refer to the Safety Data Sheet of the product.