Batimix HWR WG7-V2

Description

BATIMIX WG7-V2 is a pumping aid liquid admixture especially recommended for pumped mortars, grouts, and shotcrete materials over short and long distances.

Main Purpose

BATIMIX WG7-V2 is particularly formulated to offer high resistance to forced bleeding so that the de-watering of mortars and grouts under pumping pressure is prevented. It is characterized by long-chain water-soluble polymers of complex forms that can then intertwine and develop attractive forces through hydrogen bonds and polymer entanglements resulting in increased cohesiveness and uniformity of flow during pumping.

BATIMIX WG7-V2 can be used in all types of pumped mortars, grouts, and shotcrete materials.

Features

Concrete prepared with BATIMIX WG7-V2 is characterized by the following:

In the plastic state:

• Sharply reduced bleeding and segregation
• Increased cohesiveness with fewer risks of mixture constituents separating during pumping operations
• Improved stability of fresh mortar during casting and thereafter
• Thixotropic action, providing increased thickness layers and enhanced homogeneity
• Sag-resistance in shotcrete applications

In the hardened state:

• At normal dosages, no detrimental effect on setting time
• Improved durability and better surface quality

Properties

• Appearance : brown liquid
• Specific gravity : around 1.01 at 23ºC
• Chloride content : nil
• Alkali content : typically less than 1% as Na₂O
• Air entrainment : typically less than 1%

Health and Safety

BATIMIX WG7-V2 is not considered a hazardous product. However, it should not be swallowed or allowed to come into contact with skin and eyes. Suitable gloves and goggles should be worn. For additional information, kindly refer to the product’s Material Safety Data Sheet.

Compliance with Standards

BATIMIX WG7-V2 complies with EN 934-2 : T4.

Dosage Rates

BATIMIX WG7-V2 is generally used in conjunction with a superplasticizer to secure the required workability without additional water. Its optimum dosage and its effect on the forced bleeding and uniformity of flow during pumping should be determined by site trials using the actual mix composition. As a guide to such trials, the addition rates shall vary from 0.2% to 1% of the cementitious materials.

Effect of Overdosing

Mixtures overdosed with BATIMIX WG7-V2 will result in a highly sticky and viscous material requiring higher dosages of superplasticizer to ensure the required workability. This, in its turn, will significantly delay setting and decrease strength development especially after 24 hours.

Compatibility

BATIMIX WG7-V2 is compatible with all other Batimix admixtures incorporated in the same mixture. It should not be pre-mixed with other admixture as this may alter its performance. During batching, the admixtures should be dispensed and added separately to the mortar mix. The performance of various admixtures on the fresh and hardened mortar properties should be assessed using trial tests.

BATIMIX WG7-V2 is compatible with all types of Portland cement and replacement materials such as silica fume, fly ash, and blast furnace slag.

Dispensing

Accurate and reliable automatic dispensing systems should be used to introduce the correct quantity of BATIMIX WG7-V2 in the mixer. This product should not be directly added on the dry cementitious particles. It should rather be introduced towards the end of mixing, i.e. after incorporating all of the mixing water and other chemical admixtures.

Technical Support

Holderchem provides, upon request, complete technical support and on-site assistance to enable correct and effective use of its products.

Storage

BATIMIX WG7-V2 has a minimum shelf life of 12 months if kept unopened and stored at temperatures ranging from 2 to 50 ºC.

Packages

• 1 t IBC
• 200 kg metallic drum
• 20 kg metallic pail
• 4 kg metallic pail