EN 934-2 TABLE: 10 AYDOSMR
Set retarding/high range water reducing/superplasticizing 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. Set retarding / high range water reducing / superplasticizing admixture; admixture which produces the combined effects of a water reducing/plasticizing admixture (primary function) and a set retarding admixture (secondary function).

Description

Is a multi-purpose water reducing, mid-range plasticizing and setting retardant concrete admixture that is suitable for use especially in hot climatic conditions, gives fluidity to concrete or reduces the amount of mixture water of concrete by offering the same fluidity, improves final strengths of concrete, shows properties almost similar to superplasticizers at low, normal and high doses and prolongs the workability duration of concrete.

Chemical Properties
EN 934-2 Çizelge 1 - General requirements

Performance requirements
EN 934-2 Table 10 Specific requirements for set retarding / water reducing / plasticizing admixtures (at equal consistence)

Areas Of Application

• • In production of concrete at high temperatures where it is desired to delay the setting of the concrete for long periods,
• • In production of ready-mix concretes where transportation to long distances is required under hot climatic conditions,
• • In concretes where high early strength is required due to hot climatic conditions,
• • In concretes that are required to have compact and smooth surface,
• • In production of light or regular-weight concrete with thin and compact reinforcements or without reinforcements for difficult compacting,
• • Prestressed, precast and ready-mixed concrete applications,
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Properties / Advantages

• • Prevents the concrete from losing its viscosity fast, provides for extended viscosity protection depending on the type of cement used.
• • Significantly improves the early high strength.
• • Significantly reduces the mixing water of concrete.
• • Eliminates the risk of segregation.
• • Reduces carbonation rate of concrete, improves its mechanical properties such as shrinkage and creep.
• • Significantly improves the workability of a concrete therefore reducing placing time.
• • Improves water tightness of concrete thanks to low water/cement ratio.
• • Ensures achieving less porous and less pervious concretes with a good surface appearance.
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Application / Warning

• • Isused 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 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.
• • Concrete components may differ by their structures. The admixture to be added into the mixture to prevent segregation of the concrete should be applied in the suitable doses. Prior tests should be performed to check whether the admixture is suitable for the design of a certain concrete.
• • 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.
• • does not contain chloride or any other components that result in corrosion in the reinforcements. Therefore, it is suitable for use in reinforced concrete structures.
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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
• • It is not recommended to use the product together with products that contain polycarboxylate.
• • Products that contain polycarboxylate.
• • The product is used together with Concrete antifreeze in order to speed up the setting time by increasing the hydration temperature of concrete under cold weather conditions.
• • The product is used together with Stabilizer at worksites in order to increase viscosity of concrete.
• • At high temperatures and in case of drafts, make sure to prevent the mixture water within the concrete from evaporating. At the curing stage, curing may be used to prevent fast evaporation of the humidity within the concrete and formation of cracks.
• • 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.
• • Admixtures should not be stored by mixing together.
• • Mixing and storage equipment should be properly cleaned.
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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.