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Setting Accelerator

Setting Accelerator Tasir-SA is a liquid admixture which is added to mortars and concrete during production in order to accelerate their setting and hardening to quickly attain increased mechanical resistance. Uses ■ To accelerate the stiffening and early strength gain of Portland cement......

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Setting Accelerator

Tasir-SA is a liquid admixture which is added to mortars and concrete during production in order to accelerate their setting and hardening to quickly attain increased mechanical resistance.


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Uses

■ To accelerate the stiffening and early strength gain of Portland cement concretes and mortars

■ Typical applications for concrete or mortar placed in cold weather

■ Readymix concrete

■ Precast concrete

■ Pre-stressed concrete

■ Grouts


Advantages

■ Particularly effective in assisting to offset the delaying effect of low temperatures on setting and strength gain

■ If used in conjunction with superplasticisers the combination of early set and strength gains achieved can enable double casting in a single shift

■ Accelerated setting reduces the risk of damage to fresh concrete from freezing

■ Chloride free, safe for use in reinforced concrete

■ The efficiency of Tasir-SA is particularly useful where fast stripping of the moulds is required


Standards compliance

Tasir-SAcomplies with BS EN 934-2, BS 5075 Part 1 and with ASTM C494 Type C.

Taizheng Construction Material Co.,Ltd
Tianda Block, Jianggan District, Hangzhou City, Zhejiang Province, China

Tasir-SA

Hardening Accelerating Admixture EN 934-2:T7

Compressive Strength

Fulfilled

Air Content:

Fulfilled

Corrosion Behaviour

Contains components only from  EN934-1: 2008
Annex A.2. Thiocyanates, Nitrates

Dangerous Substances

NPD

Durability

NPD


Technical support

Tasir provides a technical advisory service for on-site assistance and advice on admixture selection, evaluation trials and dispensing equipment. Technical data and guidance can be provided for admixtures and other products for use with fresh and hardened concrete.


Properties

Tasir-SA acts as a catalyst in the initial hydration reactions of the cement, particularly at low temperatures. The set is accelerated and mechanical resistance develops rapidly, which limits damage to fresh concrete caused by frost.

The use of Tasir-SA does not mean that normal concrete practice when concreting in cold weather can be ignored.


Typical properties

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Typical dosage

The optimum dosage of Tasir-SA to meet specific requirements should always be determined by trials using the materials and conditions that will be experienced in use. This allows the optimisation of admixture dosage and mix design and provides a complete assessment of the concrete mix.

A starting point for such trials is to use a dosage within the normal typical range of 0.50 to 3.00 litres / 100 kg of cement.


Use at other dosages

Dosages outside the typical range quoted above may be used if necessary and suitable to meet particular mix requirements, provided that adequate supervision is available. Compliance with requirements must be assessed through trial mixes. Contact the Tasir Technical Department for advice in these cases.

Typical performance properties at 5°C

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Instructions for use

Compatibility

Tasir-SA is compatible with other Tasir admixtures in the same concrete mix. The admixtures must be added to the concrete separately with the mixing water and must not be directly mixed together prior to addition. The performance of concrete containing more than one admixture should be assessed by trial mixes to ensure the desired combination of effects is obtained.

Tasir-SA is suitable for use with ordinary Portland cement. Contact the Tasir Technical Department for advice on use with sulphate resisting cements and cement replacement materials.


Durability

Tasir-SA is chloride free and therefore can be used in steel reinforced concrete.


Dispensing

The correct quantity of Tasir-SA should be measured by means of a recommended dispenser. The admixture should then be added to the concrete with the mixing water to obtain the best results.

Contact the Tasir Technical Department for advice regarding dispensing suitable equipment and its installation.


Effects of overdosing

An overdose of double the intended amount of Tasir-SA may result in increased acceleration. In common with other accelerators this may slightly reduce the ultimate strength of the concrete.


Curing

As with all structural concrete, good curing practice should be maintained. Water spray, wet hessian or a Concrete cure spray applied curing membrane should be used.


Estimating — packaging

Tasir-SA is available in 20 litre drums. Bulk supply is available for larger volume users.


Storage

Tasir-SA has a shelf life of 12 months under normal warehouse storage conditions.

Tasir-SA is an oxidising agent and should be stored away from reducing agents and combustible materials.

Freezing point: Below -10°C.

If freezing of the product does occur it is important that it is fully reconstituted before use.


Precautions

Health and safety

For further information consult the Product Safety Data Sheet available for this product.


Fire

Tasir-SA is water based and non-flammable but should be stored away from combustible materials.


Tasir Construction Material&Technology Corporate Headquarters

Tianda Block, Jianggan District, Hangzhou City, Zhejiang Province, China

• Tel: +86-571-28119206

• Fax: +86-571-28197878

groutmaterial.com


Tasir and SA are trademarks of Tasir Internatinal Limite

Specifications Subject to Change.

For most current version of datasheet, go to groutmaterial.com

© 2018Tasir Construction Material&TechnologyCp.,Ltd | 08-21-2018 Rev. H | China Owned & Operated


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