Monday, September 25, 2017

Product Report - MC-Bauchemie (India) Pvt Ltd

CENTRILIT NC

 

Concrete Additive based on Pozzolanic Alumosilicate Centrilit NC (nano-crystallizer) is a pozzolanic concrete additive based on amorphous alumosilicate. It concerns a synthetically manufactured material, not an industrial by-product. Apart from a high uniformity a long-term availability is also ensured. New generation materials like Centrilit NC based on special nano-crystallizers have been recently developed. These new materials improve the properties that are crucial for the durability of high-performance concrete. In addition to reducing chloride migration, an exceptional chemical and acid resistance of the high-performance concrete can be achieved with Centrilit NC.

 

The concrete structure is simultaneously reinforced right down to Nano scale, density is improved and compressive and flexural strength as well as abrasion resistance of the high-performance concrete is increased. The unique properties of Centrilit NC can be utilised in all areas of ready-made and pre-cast concrete production that need high durability, e.g.: pre-cast concrete, HPC in the energy, wastewater and chemical industry. Due to high homogeneity and reduced tackiness compared with microsilica-based concrete, workability is improved significantly. In many instances this even enables the production of high-performance concrete that can be pumped. A distinct improvement of the building structure’s aesthetics is gained due to the fair appearance of the concrete surface. Centrilit NC performs over the some of the disadvantages of other superfine pozzolans:

  • Graded for dispersion in concrete 
  • Graded particle size
  • Optimizes mixing time within concrete
  • Good dispersion reduces unreacted material in the mix and increases passivation by C-S-H gel on aggregate surface
  • Reduces risk of Alkali Silica Reaction by agglomeration of aluminosilicate particles
  • General Advantages of using Centrilit NC in Concrete
  • Increased compressive and flexural strengths
  • Reduced permeability (including chloride permeability), Increased resistance to chemical attack and hence Increased durability
  • Reduced potential for efflorescence, which occurs when calcium is transported by water to the surface where it combines with carbon dioxide from the atmosphere to make calcium carbonate, which precipitates on the surface as a white residue.
  • Reduced effects of alkali-silica reactivity (ASR)
  • Enhanced workability, Better pumpabilty and finishing of concrete
  • Reduced shrinkage in concrete, due to "particle packing" making concrete denser
  • Improved color by lightening the color of concrete making it possible to tint lighter integral
  • Endless quantities as it is a Factory made Homogenous product
  • Reduced dosage of superplasticizer

 

 

CRACK INJECTION SYSTEM

 

As a principle, the grouting injections systems should be selected based on the crack or cavity width. The following materials can be selected from the MC-Bauchemie Range:

 

a) For cracks ≥ 2 mm width – Centricrete

 

b) For cracks > 0.2 to 2 mm width – MC-DUR 1264 Epoxy System

 

Centicrete is a ready to use, hydraulically setting, polymer modified waterproof grout for injection and filling of cracks and cavities. Centricrete injection grout is produced with carefully selected water repellent and silicifying chemical compounds and inert fillers to achieve varied characteristics like water impermeability, non-shrinkage, free flow etc.

It creates an integral waterproof barrier and prevents water penetration and rising dampness. Centicrete injection grout is suitable for gravity as well as pressure grouting. This grout is pumpable when the water-powder ratio is about 0.45 to 0.50 i.e. for 30 kg Centricrete, 13.5 to 15 litre of water.

MC-DUR 1264 is a two component, low viscosity Epoxy injection resin for structural repair of cracks. This method of application varies from simple brush treatment to sophisticated two component pressure injection machines. The application time of MC-DUR 1264 depends on the amount of resin mixed and the ambient temperature. The mixing ratio of resin to hardener is 100: 18 Pbw.

MC-Bauchemie (India) Pvt. Ltd. manufactures this product along with a host of other construction chemicals in technical and financial collaboration with MC-Bauchemie, Germany. MC-Bauchemie (India) Pvt. Ltd. Is an ISO 9001:2008 certified company.

 

For more information please contact: 

Email: info.india@mc-bauchemie.com;

            mcbindia@yahoo.co.in

Web: www.mc-bauchemie.com

 




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