Batimix MAC 730

Description

BATIMIX MAC 730 is a multi-purpose admixture, which accelerates the setting times of mortars and grouts. It is free from calcium chloride and added chloride ions, harmful to steel, aluminum, or zinc embedments.

Main Purpose

BATIMIX MAC 730 is designed to reduce the initial and final setting times of mortars. It is particularly effective in cold temperatures. This product is used in all types of mortars and grouts designed for masonry and repair applications such as plastering, rendering, patching, pointing, bricklaying, and screeding.

Features

Mortars prepared with BATIMIX MAC 730 are characterized by the following:

In the plastic state:

• Reduced initial and final setting times
• Minimized bleeding and segregation
• Densified and cohesive skeleton
• Decreased over time, 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 1.15 at 23 ºC
• Chloride content: nil
• Alkali content : typically less than 1.5% as Na₂O
• Air entrainment : typically less than 1% at normal dosages
• Solid content : minimum 25%
• Freezing point : 0 ºC

Health and Safety

BATIMIX MAC 730 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 MAC 730 complies with EN 934 Part 3.

Dosage Rates

The optimum dosage of BATIMIX MAC 730 to meet specific requirements is best determined by trials using the actual mix composition with site materials under conditions that will be experienced in use. As a guide to the trial tests, the addition rates shall vary from 1% to 5% of the cementitious materials. Dosages outside the specified range may be used if necessary to meet particular mix requirements.

When designing mortar mixes with BATIMIX MAC 730, it is necessary to reduce the free water content to maintain similar W/C and compressive strength.

Effect of Overdosing

In general, an overdose of BATIMIX MAC 730 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 MAC 730 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 should be assessed using trial tests as such combinations may alter setting times, air entrainment, and early strength gain.

Dispensing

BATIMIX MAC 730 should not be directly added on the dry cement. It should rather be added after incorporating around 2/3 of the mixing water, and in any case prior to introducing other chemicals such as water-reducers.

Technical Support

Holderchem provides, upon request, technical advisory services for mix design, admixture selection, and evaluation trials.

Storage

BATIMIX MAC 730 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