Batimix HWR 1204

Description

BATIMIX HWR 1204 is a liquid high-range water-reducing (superplasticizer) admixture with enhanced properties for high-performance concrete. It is based on refined naphthalene-sulphonate and carefully selected chemical materials.

Main Purpose

BATIMIX HWR 1204 is designed to significantly enhance concrete workability and/or facilitate an effective reduction in free water content. This product is a highly potent dispersant that primarily operates through electrostatic repulsion, breaking up aggregates within the concrete mix. This allows for the attainment of specified concrete strength grades with a substantial reduction in cement content and/or improved workability.

Applications utilizing BATIMIX HWR 1204 encompass all types of concrete casting, including plain, reinforced, precast, ready-mixed, lightweight, pumped, and shotcrete.

Features

Concrete prepared with BATIMIX HWR 1204 is characterized by the following:

In the plastic state:

• Improved workability without adding extra water
• Reduced water content up to 38% with minimum secondary effects
• Enhanced homogeneity, cohesion, and ability to pump the mix
• Normal setting characteristics under cold conditions

In the hardened state:

• Increased mechanical strengths – compressive, flexural, and bonding
• Reduced shrinkage, creep, and water permeability
• Enhanced concrete durability and surface appearance

Properties

• Appearance: brown liquid
• Specific gravity: 1.14 ± 0.02 at 23 ºC
• Chloride content: nil
• Alkali content : typically less than 2.5% as Na₂O
• Air entrainment: less than 1% increase at normal dosages

Health and Safety

BATIMIX HWR 1204 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

Standard Compliance

BATIMIX HWR 1204 complies with:

• EN 934-2 : T3.1/3.2
• ASTM C 494 Types F and G

Dosage Rates

The most effective application of BATIMIX HWR 1204 to enhance fresh and hardened concrete properties, including slump, slump retention, and early strength gain, should ideally be determined through practical trials. These trials should involve testing the product using the chosen concrete mix design and on-site materials under real field conditions.

As a general guideline, BATIMIX HWR 1204 is typically applied at dosage rates ranging from 0.3% to 2.3% of the cementitious materials for reference purposes.

Effect of Overdosing

Concrete mixtures overdosed with BATIMIX HWR 1204 will display distinct indications of bleeding and segregation, especially when the water-cement (W/C) ratios exceed 0.45. This will be accompanied by a substantial increase in slump. Nevertheless, the consequences of overdosing will result in a minor increase in air entrainment and a delay in setting times compared to concrete prepared with the standard dosage. As long as proper curing is administered, the ultimate strength of the concrete will not be compromised by this delay in setting.

Compatibility

BATIMIX HWR 1204 seamlessly integrates with all other Batimix admixtures when utilised together in the same concrete mixture. It is essential not to pre-mix BATIMIX HWR 1204 with other admixtures, as doing so could potentially impact its performance. During the batching process, it is strongly recommended to dispense and add each admixture separately to the concrete mix. To evaluate the influence of various admixtures on fresh and hardened concrete properties, including setting times and air entrainment, conducting trial tests is imperative.

Moreover, BATIMIX HWR 1204 exhibits compatibility with all types of Portland cement and substitute materials such as silica fume, fly ash, and blast furnace slag.

Dispensing

To ensure consistency in dosage and prevent variations, it is imperative to employ precise and dependable automatic dispensing systems when introducing BATIMIX HWR 1204 into the concrete mixer. It is essential not to add this product directly onto dry cementitious particles. Instead, it should be introduced after incorporating approximately 2/3 of the mixing water. This approach enhances its effectiveness and dispersing properties.

Technical Support

Holderchem offers comprehensive technical support and on-site assistance upon request, ensuring the proper and effective utilization of its products.

Storage

BATIMIX HWR 1204 has a minimum shelf life of 12 months if kept unopened and stored at temperatures ranging from 2 to 50 ºC.

Packages

• Bulk
• 1T IBC
• 200 kg drum