SikaPlast®-178 KH

SikaPlast®-178 KH
PCE BASED SUPERPLASTICIZING AND SET RETARDING CONCRETE ADMIXTURE
DESCRIPTION
SikaPlast®-178 KH is a 3rd generation polymer based
high performance superplasticizer for producing soft
con- sistency concrete.
USES
SikaPlast®-178 KH mainly suitable for the manufacture
of concrete for RMC plants and site batch concrete.
SikaPlast®-178 KH is used for the following types of
concrete:
▪ Bored piles
▪ Barrette foundations and diaphragm walls
▪ Ground and suspended slabs
▪ Columns and walls
CHARACTERISTICS / ADVANTAGES
SikaPlast®-178 KH combines different modes of actions. By adsorption on the surface of the fines and
keeping them apart while the hydration is in progress,
SikaPlast®-178 KH effects the following concrete properties:
▪ Long slump keeping and high water reduction
High flowability (considerably reduced placing and
compacting work)
▪
▪ Faster evolution of early strength development
Workability can be maintained up to 3-6 hours (still
depends on admixture dosage, cement type, temperature)
▪
Improved creep and shrinkage resistance characteristics
▪
When used at higher dosages, SikaPlast®-178 KH can
give extended working time
▪
APPROVALS / CERTIFICATES
SikaPlast®-178 KH meets the requirements of ASTM C
494 Type D & G.
SikaPlast®-178 KH conforms to type G when used at
0.8 – 1.0% dosage, depending on cement type used.
PRODUCT INFORMATION
Composition Modified Poly carboxylate in water
Packaging 200 L /1000 L
Shelf life 12 months if stored properly in original unopened packaging
Storage conditions Stored in dry conditions, protected from direct sunlight and at temperatures between +5 °C and +30 °C
Density 1.095 – 1.115 kg/L (At 20°C)
pH-Value 4.50 – 6.50 (At 25°C)
Concrete placing: With the use of SikaPlast®-178 KH, concrete of highest
quality is being produced, however state of the art concrete technology,
such as mixing, placing vibrating and curing must be respected and apConcreting Guidance
1 / 2
plied.
Curing: Effective measures for concrete curing must be followed.
Specific Advice SikaPlast®-178 KH is added to the gauging water prior to its addition to the
dry mix or added separately to the wetted concrete mix.
For optimum utilization of the ultra-high range water reducer we recommend a minimum wet mixing time of 60 seconds.
When adding the balance of the batching water to adjust concrete consistency this should be done after a minimum of 2/3 of the wet mixing time to
avoid surplus water in the concrete.
Recommended Dosage 0.5 – 2 L per 100 kg of cement/binder
Typical dosage: 0.8 to 1.2 L per 100 kg of cement/binder
Compatibility SikaPlast®-178 KH may be combined with all Sikament, Sika® Aer,
Sika®Pump, Sikacrete® PP-1 products, but must be added separately to the
mix and not pre-mixed prior its addition. SikaPlast®-178 KH is compatible
with all Portland Cement types.