Batimix Anti-Frost M-850

Description

BATIMIX Anti-Frost M-850 is a liquid admixture designed to reduce/eliminate frost attacks in mortars and grouts during cold weather works. It does not contain calcium chloride or added chloride ions that can potentially attack embedded steel reinforcements.

Main Purpose

BATIMIX Anti-Frost M-850 is designed to enable mortar to be placed at sub-freezing temperatures by promoting cement hydration. It increases early strength development, thus reducing cold-weather protective measures and construction costs. It is to be noted that air entrainment up to 10% is crucial to ensure the long service life of mortars exposed to moisture and freezing temperatures.

Applications using BATIMIX Anti-Frost M-850 include all types of mortars and grouts used for masonry and repair in cold weather conditions, containing or not steel reinforcements.

Features

Mortars prepared with BATIMIX Anti-Frost M-850 are characterized by the following:

In the plastic state:

• Reduced frost attack during cold weather
• Minimized bleeding and segregation
• Densified and cohesive skeleton
• Decreased overtime, allowing same-day finishing

In the hardened state:

• Reduced construction costs – no cold weather delays
• Increased early compressive and flexural strengths

Properties

• Appearance: brown liquid
• Specific gravity: around 1.25 at 23 ºC
• Chloride content: nil
• Alkali content: typically less than 1% as Na₂O
• Air entrainment: typically less than 1% at normal dosages
• Solid content: minimum 25%
• Freezing point: around -10 ºC

Health and Safety

BATIMIX Anti-Frost M-850 is not a hazardous material. 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 Anti-Frost M-850 complies with EN 934 Part 3.

Dosage Rates

The optimum dosage of BATIMIX Anti-Frost M-850 to meet specific requirements is best determined by trials using the actual mix formulation with site materials under conditions that will be experienced in use. This allows better optimization of admixture dosage and provides complete assessment of mortar properties. As a guide to such trials, the addition rates shall vary from 2% to 5% of the cementitious materials.

When designing mortar mixes with BATIMIX Anti-Frost M-850, it is necessary to reduce the free water content to maintain constant workability and compressive strength.

Effect of Overdosing

In general, an overdose of BATIMIX Anti-Frost M-850 will produce a highly cohesive material with significant loss in workability and increased early strength as compared to that normally obtained. The rapid initial acceleration of the cement hydration process will generally lead to slightly reduced 28-day compressive strength.

Compatibility

BATIMIX Anti-Frost M-850 is compatible with all types of Portland cement, replacement materials such as silica fume, and other Holderchem admixtures incorporated in the same mortar. During batching, all admixtures should be added separately to the mortar mix. The performance of various admixtures on the fresh and hardened properties should be assessed using trial tests.

Dispensing

BATIMIX Anti-Frost M-850 should not be directly added on the dry cement. It should rather be added after incorporating around 2/3 of the mixing water, however, prior to introducing other chemicals such as water-reducers.

Technical Support

Holderchem provides, upon request, technical advisory services pertaining to mix design, admixture selection, and materials evaluation.

Storage

BATIMIX Anti-Frost M-850 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