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Admixtures are the ingredients in concrete other than portland cement, water, and aggregate that are added to the mix immediately before or during mixing. Admixtures are Liquid or powder products which modify and improve the properties of fresh and hardened concrete or mortar.
Admixtures play a vital role in production of quality concrete and mortars in all segments of the industry – Ready-mix, Precast and Site-batch. It is the ingredients in concrete other than cement, water and aggregate that is added to the mix immediately before or during mixing.
Products
Plasticisers:Conplast P211
Superplasticisers:Conplast SP430
Corrosion inhibitors:
Air-entrainers
Pumping aids
Retarders
Specialty admixtures
Accelerators:Conplast NC
Why is admixture used?
Over decades, attempts have been made to obtain concrete with certain desired characteristics such as high compressive strength, high workability, and high performance and durability parameters to meet the requirement of complexity of modern structures.
The properties commonly modified are the heat of hydration, accelerate or retard setting time, workability, water reduction, dispersion and air-entrainment, impermeability and durability factors.
Types of Admixtures
Chemical admixtures :
Accelerators, Retarders, Water-reducing agents, Super plasticizers, Air entraining agents etc.
Mineral admixtures:
Fly-ash Blast-furnace slag, Silica fume and Rice husk Ash etc.
Nitobond EP Standard is a two component epoxy bonding agent sup-plied in pre-weighed quantities for ready on-site mixing and use.
1. Can be applied on concrete & mortar substrate
2. Facilitates improvement in mechanical strength
3. Good positive adhesion
4. Helps in bonding old and new cementitious substrates
5. Tools and equipment shall be cleaned thoroughly after use with Nitoflor Sol
1.Excellent durability - high compressive, flexural and tensile strengths ensure a long working life.
2. Cost effective - high early strength gain promotes minimum downtime and early commissioning of plant.
3. User friendly - simple, full pack mixing to ensure that the performance characteristics are achieved
4. Versatile - suitable for a wide range of loading situations including repetitive dynamic loads.
5. Excellent in service performance - non-shrink capability ensures full surface to surface contact
1, Provides good bond to concrete, masonry, stone work, plaster and block work
2. Improves tensile and flexural properties of mortar
3. Compatible with all common hydraulic cements
4. No bleeding and segregation
5. Nitobond AR Std. bonding aid has a shelf life of 12 months
FOSROC
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