Batimix Accelerator 310

Description

BATIMIX Accelerator 310 is a chloride-based admixture designed to accelerate the setting times of concrete.

Main Purpose

BATIMIX Accelerator 310 reduces the initial and final setting times of concrete. It is particularly effective in cold temperatures and unfavorable cold weather conditions. Formwork systems can be removed earlier as a result of the increase in early strength.

BATIMIX Accelerator 310 can be used in all types of plain (i.e. non-reinforced) concrete elements.

Features

Concrete prepared with BATIMIX Accelerator 310 is characterized by the following:

In the plastic state:

• Reduced initial and final setting times
• 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: 1.25 ± 0.02 at 23 ºC
• Chloride content: nil
• Air entrainment: typically, less than 1.5% at normal dosages
• Alkali content: typically, less than 1.5% as Na₂O

Health and Safety

BATIMIX Accelerator 310 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 Accelerator 310 complies with the following standards:

• EN 934-2:T6
• ASTM C 494 Type C

Dosage Rates

The optimum dosage of BATIMIX Accelerator 310 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. For cold weather concreting, follow the ACI 306 recommendations as specific procedures may be required. As a guide to the trial tests, the addition rates shall vary from 0.8% to 4% of the cementitious materials. Dosages outside the specified range may be used if necessary to meet particular mix requirements.

It is to be noted that the free water content should be reduced when designing concrete mixes with BATIMIX Accelerator 310 to maintain similar W/C.

Effect of Overdosing

In general, an overdose of BATIMIX Accelerator 310 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 due to overdosing will generally lead to slightly reduced 28-day compressive strength.

Compatibility

BATIMIX Accelerator 310 is compatible with all other Batimix admixtures incorporated in the same concrete. During batching, all admixtures should be added separately to the concrete mix as this may alter their performances. Concrete mixtures based on Portland cement with or without replacement materials such as silica fume, fly ash, and blast furnace slag are compatible with BATIMIX Accelerator 310. It is to be noted that the presence of chloride materials may potentially attack steel, aluminium, or zinc embedments.

Dispensing

Automatic dispensing systems should preferably be used to introduce the correct quantity of BATIMIX Accelerator 310 in the concrete mixer. This admixture should not be directly introduced 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. Make sure to agitate well the product prior to use.

Technical Support

Holderchem provides, upon request, technical advisory services pertaining to the concrete mix design, admixture selection, materials testing, and dispensing system.

Storage

BATIMIX Accelerator 310 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 drum
• 20 kg pail
• 4 kg pail