CASTECHCAST SET AC 500
Water-Reducing and Accelerating Superplasticizer based on Poly- carboxylate Ether
CASTECH CastSet AC500 is a patented, ready-to-use liquid admixture formulated to reduce water, accelerate time of setting and to increase early concrete strengths.
Overview
About
CASTECH CastSet AC500 is a patented, ready-to-use liquid admixture formulated to reduce water, accelerate time of setting and to increase early concrete strengths. CASTECH CastSet AC500 does not contain calcium chloride and is formulated to comply with ASTM C 494/C 494M Type C & F, accelerating, admixture requirements.
Typical uses
Recommended for use in
- Reinforced, precast, pumped, flowable, lightweight or normal weight concrete and shotcrete (wet mix)
- Concrete placed on galvanized steel floor and roof systems which are left in place
- Prestressed concrete
- Fast-track concrete construction
- Concrete subject to chloride ion constraints
- Self-consolidating concrete (SCC)
- Pervious concrete
- Masonry mortar
Compatibility
CASTECH CastSet AC500 is compatible with all Portland cements that meet recognized international standards. CASTECH CastSet AC500 must not be used in conjunction with any other admixture unless prior approval is received from CASTECH Technical Department. CASTECH CastSet AC500 is suitable for mixes containing: Micro silica, Pulverized fuel ash, Ground granulated blast furnace slag cement.
Benefits
Benefits
- Earlier finishing of slabs — reduced labor costs
- Reduced in-place concrete costs
- Reduced or eliminated heating and protection time in cold weather
- Earlier stripping and reuse of forms
- Superior finishing characteristics for flatwork and cast surfaces
Advantages
Features
- Accelerated setting time across a wide range of temperatures
- Increased early compressive and flexural strengths
Effect of increased early strength
- Earlier stripping and re-use of forms for walls and precast work
- Earlier structural use of concrete, as in lift-slab construction, tilt-up, paving and floors
- Earlier tensioning in post-tensioned concrete based on Poly-
- Earlier de-tensioning in pre-stressed concrete
- Potential energy savings in accelerated steam-cured applications by reducing curing temperatures and/or curing time
- Offsetting the set retardation of stabilised concrete
Technical data
| Consistence | Liquid |
|---|---|
| Colour | Light Brown |
| Chloride According to EN 934-2 | Nil |
| Classification According to | Type C & F ASTM C494 |
| Specific Gravity | 1.09±0.02 @ 25°C |
| Air Entrainment | Less than 1.5% |
| pH (ISO 4316) | 4.0 – 6.0 |
| Alkali Content (EN 480-12) (%) | < 3 |
Typical values. Refer to the TDS for full details and test conditions.
Application
Dosage
The normal dosage for CASTECH CastSet AC500 is between 0.5% and 2.5% per 100 kg of cement (cementitious material). Dosages outside this range are permissible subject to trial mixes.
Application
CASTECH CastSet AC500 is a ready to use admixture that is added to the concrete at the time of batching. The maximum effect is achieved when CASTECH CastSet AC500 is added after the addition of 70% to 80% of the water. CASTECH CastSet AC500 must not be added to the dry materials. Thorough mixing is essential and a minimum mixing cycle, after the addition of CASTECH CastSet AC500, of 90 seconds for forced action mixers is recommended.
Curing
As with all structural concrete, normal curing methods apply.
Packaging & storage
Packaging
CASTECH CastSet AC500 is available in IBC, 210-liter drums and in bulk tanks upon request.
Storage & shelf life
CASTECH CastSet AC500 should be protected from extreme temperature. Should the material become frozen, it must be completely thawed and thoroughly mixed before use. CASTECH CastSet AC500 has a minimum shelf life of 6 months provided temperature is kept within range 5°C to 30°C.
Health & safety
Health & Safety
CASTECH CastSet AC500 is non-toxic. Any splashes to the skin should be washed immediately with water. Splashes to the eyes should be washed immediately with water and medical advice should be sought.