Product Data Sheet Safety Data Sheet Show all documents

Sikament®-686

HIGH RANGE AND MID RANGE WATER REDUCING ADMIXTURE

Sikament®-686 is a high range water reducing admixture utilizing Sika’s ViscoCrete® Technology. Its unique formulation is based on polycarboxylate technology.

  • High Range Water Reducing Applications: When used as a high range water reducing admixture, water reduction up to 30 % can be obtained. The superplasticizing action allows for the production of high slump flowing concrete with excellent workability that can be placed with minimum vibration even at a low water/cement ratio. The dispersing action of Sikament®-686 maximizes cement hydration efficiency and improves concrete’s early and long term compressive strengths.
  • Mid Range Water Reducing Applications: At a lower dosage, Sikament®-686 can be used as a cost effective mid range water reducing admixture or simply as a water reducing admixture for production of conventional slump concrete.   When used as a mid range water reducing admixture, water reduction up to 15 % can be obtained. This application is ideal for use with lean, harsh concrete mixes or concrete containing flyash. Sikament®-686 will improve workability and finishability.
The combined water reducing and superplasticizing action provide the following benefits:
  • Higher early and ultimate strengths for cost effective high strength concrete and earlier structural use of concrete
  • Higher early strengths allow faster demolding and more efficient use of forms to precast producers
  • Increased slump improves workability and reduces labor costs
  • Full flow action aids in pumping and reduces need for vibration
  • Greater concrete density reduces permeability and increases durability
Sikament®-686 does not contain calcium chloride or any other intentionally added chlorides and will not initiate or contribute to corrosion on steel reinforcement present in the concrete
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Production of all high strength concrete products, whenever high plasticity and increased early and ultimate strengths are desired
  • As a superplasticizer, to provides excellent workability for concrete with low water-cement ratio

Advantages

  • High Range Water Reducing Applications: When used as a high range water reducing admixture, water reduction up to 30 % can be obtained. The superplasticizing action allows for the production of high slump flowing concrete with excellent workability that can be placed with minimum vibration even at a low water/cement ratio. The dispersing action of Sikament®-686 maximizes cement hydration efficiency and improves concrete’s early and long term compressive strengths.
  • Mid Range Water Reducing Applications: At a lower dosage, Sikament®-686 can be used as a cost effective mid range water reducing admixture or simply as a water reducing admixture for production of conventional slump concrete.   When used as a mid range water reducing admixture, water reduction up to 15 % can be obtained. This application is ideal for use with lean, harsh concrete mixes or concrete containing flyash. Sikament®-686 will improve workability and finishability.
The combined water reducing and superplasticizing action provide the following benefits:
  • Higher early and ultimate strengths for cost effective high strength concrete and earlier structural use of concrete
  • Higher early strengths allow faster demolding and more efficient use of forms to precast producers
  • Increased slump improves workability and reduces labor costs
  • Full flow action aids in pumping and reduces need for vibration
  • Greater concrete density reduces permeability and increases durability
Sikament®-686 does not contain calcium chloride or any other intentionally added chlorides and will not initiate or contribute to corrosion on steel reinforcement present in the concrete

Packaging

205 L (54 US gal.) drum
1040 L (275 US gal.) IBC
Bulk delivery

Colour

Liquid / Brown 

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • Meets ASTM C494 Types A and F requirements
  • Ministère des Transports du Québec (MTQ) approved
 
Product Information

Shelf Life

1 year when stored in dry warehouse conditions at temperatures between 5 °C and 27 °C (40 °F and 80 °F).

Storage Conditions

Store at temperatures above 5 °C (40 °F). If frozen, thaw and agitate thoroughly to return to normal state. Protect from direct sunlight.

Specific Gravity

Approx. 1.05

Application

Application Information

Mixing

For best plasticizing results, Sikament®-686 should be added directly to freshly mixed concrete in the concrete mixer or at the end of the batching cycle. Sikament®-686 may also be dispensed as an integral material during the regular admixture batching cycle, or into freshly mixed concrete in a ready-mix truck at the concrete plant or job site. To optimize the superplasticizing effect, Sika recommends that the combined materials be mixed for 60–90 revolutions, either in the concrete mixer or in the ready-mix truck.

Combination with other admixtures: Sikament®-686 is highly effective as a single admixture or in combination with other admixtures in the Sika System. If used in combination with certain Sikament® high range water reducers, it may affect the plastic properties of fresh concrete. Contact your Sika Canada Technical Sales Representative for further information.

Combination with microsilica: Sikament®-686 is particularly well suited for use with microsilica because of its water reduction capability.
Consumption

Recommended Dosage

For general concreting applications, the recommended dosage is 195 – 780 mL/100 kg of cementitious material. Dosage rates will vary depending on the material used, ambient conditions and the requirements of a specific project

If maximum water reduction is required, a dosage up to 1170 mL/100 kg of cementitious material may be used. In this case, delayed setting times may occur.

Note: Dosage rates outside the recommended range may be used where specialized materials such as microsilica are specified, extreme ambient conditions are encountered or unusual project conditions require special consideration. Contact your Sika Canada Technical Sales Representative for further information.

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