Accelerating Admixture (powder) BC 31

BC31 is an effective agent for accelerating cement initial and final setting and concrete hardening. This quality is important for concreting in cold weather.

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Description

Field of Application

Concreting in cold weather
Repairing and renewing where short setting time needed
Performing slope structures
Producing pre-cast concrete structures
Concreting for making concrete structures impermeable

Properties and Effects

Decreasing the setting time and attaining higher initial and final strength at early ages
Preventing concrete from freezing
Increasing the concrete strength during the first three days up to 30%
Accelerating the final finishing operation and preparation of the concrete surface
Accelerating the mould opening and loading operation
Economizing concreting operation
Reducing the damages caused by ambient temperature fluctuations
Increasing the hydration temperature

Dosage

According to the required setting time, use BC31 up to 2% of cement weight

Instruction for use

To achieve the optimal result, add BC31 directly to the dry concrete ingredients, then add water to the mixture and continue mixing quickly then start concreting operation. At last, continue mixing for more 2 minutes.

Technical Data

Color: Milky
Physical state: Powder
Solubility: In water
Density: 1.2 g/cm3
PH: approx. 11
Chloride: Nill

Storage

Storage: protected against air and moisture, at the maximum temperature of 50°C
Shelf life: 1 year in original package
Packaging: 25 Kg bags

Technical observation and application

If dosage rate is more than 2% of cement weight, the exact dosage rate may be obtained by trial mixes
If the percentage of cement increases, the dosage rate of BC31 varies according to the results of trial mixes
If it meets eyes, wash them immediately with pure water
When simultaneous use of several admixtures in concrete mix is required, consult Research Center of Beton Chimie

Reference Standards

(ASTM C 494, (type C
(ASTM C 1141 (type I, grade 1

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