Highly Efficient Set Retarding Concrete Admixture

SWRR -381 is a highly efficient set retarding concrete admixture. SWRR -381 is used as retarding admixture in concrete where a controlled extention of setting time is required.
Use

• Large volume pours
• Long haul
• Avoiding of cold joints
• Construction joints
• Difficult placing conditions
• Elevated temperature
• Revibrated concrete
• Ready mix concrete

Advantages
SWRR -381 provides the followings beneficial properties :

• Increased setting time in hot weather
• Accelerated hardening after setting
• Increased ultimate strenghts
• Long lasting control over slump loss.
• Better surface finish
• Chloride free : does not attack reinforcement
• Improves work ability : Cohesion and extends setting time. Provde protection against delay.
• Larger pours : Possible with extended placing and compaction times and avoidance of 'cold joint'.
• Cement savings : Can be obtained by maintaining original strength and work ability.

Appearance : Yellowish liquid
Chemical Base : Poly hydroxyl Compound
Packaging : SWRR-381 is available in 230 kg Non Returnable Drums.
Storage & Shelf Life
12 months from date of production if stored property in undamaged unopened, original sealed packaging, in dry conditions at temperatures between +10^oC and +40^oC. Protect from direct sunlight and frost.
Dosage
SWRR-381 0.20-0.6% by weight of cement. The retardation rate achieved is directly dependent on the dosage rate which in turn is nfluenced by quality of cement and aggregates, w/c ratio and temperatures. It is trials should be carried out to determine optimum dosage rate.
Applications conditions Instructions for use
By use SWRR-381 concrete of highest quality can be produced. The standard rules of good concreting practice, concerning production, placing and testing are to be followed. Fresh concrete must be cured as per the relevant standard.
Important Notes
When accidental overdosing of normal setting SWRR-381 occure the setting time will be retarded.
During this period the concrete must be kept moist to prevent premature drying out.
Other products catagories available.