Carpol(M)

DESCRIPTION:

AT-CARPOL (M) is based on unique poly carboxylic ether polymers that greatly improves cement dispersion by the action of conventional electrostatic dispersion forces along with lateral chains linked up with backbone which generate steric-hindrance effects to stabilize the concrete mix and make it highly flow able without any extra water demand.

STANDARDS:

Complies to ASTM C 494 : Type G and BS 5075 : Part 1

USES:

• For Structure and shotcreteing where water reduction with extended workability is of prime importance
• Pre-cast concrete manufacturing – due to strength development characteristics the elimination or reduction of steam curing in precast works may be considered as an economical option.
• Micro silica concrete and where improved surface finish is required
• Ready mix concrete
• Long distance transportation
• In hot weather to extend workability
• Self compacting concrete

ADVANTAGES:

• Reduction of 30% water contents whilst maintain workability, durability & impermeability
• Increased flexural strength
• Higher E modulus
• Improved adhesion to reinforcing and stressing steel
• Better resistance to carbonation
• Lower permeability
• Better resistance to aggressive atmospheric conditions
• Reduced shrinkage and creep
• Increased durability
• Increases early & ultimate compressive strength and other strength developing properties
• Effects economies of concrete mix thereby saving cement
• Compatible with all type of cement including sulphate resisting
• Improves pump-ability of the material
• Improves cohesive properties of concrete to reduce segregation & bleeding
• Reduce the placing problems in hot weather concrete
• Improve trowel ability & surface finish
• Ready mix concrete where workability retention coupled with retardation in initial set

DOSAGE:

• 0.4% – 1% for 100 kg cement. Exact dosage rates are dependent on the type of effect & retardation sought, quality of cement & aggregates, W/C ratio and ambient temperature. Actual dosage to be finalised on the basis of site trials.

INSTRUCTIONS FOR USE:

• SETTING TIME:
  • AT-CARPOL (M) ensures that rheoplastic concrete remains workable in excess of 3 hours at +20°C. Workability loss is dependent on temperature, and on the type of cement, the nature of aggregates, the method of transport and initial workability. It is strongly recommended that concrete should be properly cured particularly in hot and dry climates.

• COMPATABILITY:
  • AT-CARPOL (M) is compatible with all types of cement complying with international standards. It can be used in combination with the following admixtures and additives:
    • Air entraining admixtures
    • Anti freezing admixture
    • Pozzolanz ( Micro Silica, Flyash, GGBFS)
    • Synthetic fibers
    • Alkali silica reaction control admixture
    • Waterproofing admixture

• EFFECT OF OVER DOSAGE:
  • Retardation of initial set
  • Increase in air contents
  • Increase in workability

• MIXING:
  • AT-CARPOL (M) should be added to the gauging water or simultaneously to be poured into mixer. Never add AT-CARPOL (M) to the dry cement. For optimum utilization of the high water reduction we recommend thorough mixing at a minimal wet mixing time of 60 seconds. The addition of the remaining gauging water to fine-tune the concrete consistency – may only be started after 2/3 minutes of the wet mixing time to, to avoid surplus water in the concrete.

• CURING:
  • Fresh poured concrete must be cured properly, particularly at high temperatures in order to prevent plastic and drying shrinkages and cracks. Use of ADO Curing Compounds recommended for achieving best results. Conventional method of wet hessian is also applicable.

TECHNICAL DATA:

(All technical data stated herein is based on tests carried out under laboratory condition)

PACKAGING & STORAGE:

• AT-CARPOL (M) is available in the following pack:
  • 200 kg HDPE container
• Shelf life is 12 months from date of production if stored properly in undamaged, unopened, original sealed packaging, in dry conditions at temperatures between +5°C and +30°C
• Keep containers sealed and away from heat and cold in a well ventilated area
• Protect from direct sunlight and frost
• Stir material well before use

HEALTH & SAFETY:

• Protect hands with rubber gloves and eyes with goggles.
• This chemical is harmless to human body.
• Accidental splashes to the skin or eyes must be rinsed immediately with clean water.
• Store in well-labeled containers.
• Non dangerous goods, please observe Material Safety datasheet.