High Range & Ultra High Range Water Reducers - Sikament®-686

High Range Water Reducing Admixture

Sikament®-686 is a high range water reducing admixture utilizing Sika’s ViscoCrete® Technology. It’s unique formulation is based on polycarboxylate technology. Sikament®-686 meets the requirements for ASTM C-494 Types A and F admixture.

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/cementitious 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 fly ash. 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.

Usage

Sikament®-686 is recommended for use in the production of all high strength concrete products, whenever high plasticity and increased early and ultimate strengths are desired. The superplasticizing action of Sikament®-686 provides excellent workability at low water cementitious ratios.

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/cementitious 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 fly ash. 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

Sikament®-686 is available in 55 gallon drums (208 liter), 275 gallon totes (1040 liters) and bulk delivery.

Color

Brown Liquid

Product Details

Product Information

Shelf Life

Shelf life when stored in dry warehouse conditions between 40 °F and 80 °F (5-27 °C) is 1 year.

Storage Conditions

Sikament®-686 should be stored at above 40 °F (5 °C). 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 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 80-100 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.

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

Consumption

Recommended Dosage

Dosage rates will vary depending on the material used, ambient conditions and the requirements of a specific project. For general concreting applications, Sika recommends a dosage rate between 3-12 fl.oz. /100 lbs. (195-780 ml/100 kg) cementitious materials. If maximum water reduction is required, dosage up to 18 fl.oz./100 lbs. (1170 ml/100 kg) of cementitious materials may be used. In this case, delayed setting times may occur. 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.

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