Sika Intraplast NN — Expansive Cementitious Grouting and Crack Injection Admixture

Sika Intraplast NN

Expansive Cementitious Grouting and Crack Injection Admixture

Authorized Project Distributor — Sika India | Space Arc Engineering, Ghaziabad

Product Overview

Sika Intraplast NN is a specially formulated powder admixture that, when added to cement and water, produces controlled expansion in the fresh state through a chemical gas-generating mechanism. This expansion compensates for the natural settlement and shrinkage of plain cement grouts, ensuring that the cured grout fills voids and cracks completely without leaving unfilled cavities or pull-away gaps. Sika Intraplast NN is used to produce non-shrink cementitious grouts for anchor bolt grouting, void filling behind retaining walls, post-tension duct grouting, structural crack filling, and under-pier grouting. It is a cost-effective admixture that enables site teams to produce non-shrink grout using available cement. Space Arc Engineering distributes Sika Intraplast NN for civil infrastructure, post-tension, and grouting projects across Delhi NCR and UP.

Applications

  • Anchor bolt and holding-down bolt grouting in concrete
  • Post-tension cable duct grouting
  • Void filling behind retaining walls and abutments
  • Structural crack grouting in walls, columns, and foundations
  • Under-pier and bridge bearing grouting
  • Tunnel plug and annular space grouting

Key Advantages

  • Controlled gas expansion compensates for cement shrinkage
  • Non-shrink cementitious grout from site-available materials
  • Cost-effective — uses project cement and sand
  • Fills all voids and cracks completely without cavities
  • Suitable for pressure grouting applications
  • Easy to dose and mix on site

Technical Data

TypeExpansive gas-generating cementitious admixture
FormPowder
Dosage~0.5–1.0% by weight of cement
ExpansionControlled — compensates shrinkage in fresh state
Final StateRigid non-shrink cementitious grout
Pack Size1 kg, 5 kg bags

Get a Quote

📞 +91 9999155255
📧 info@space-arc.com
🏢 Space Arc Engineering, Sahibabad, Ghaziabad

Frequently Asked Questions

How does Sika Intraplast NN create expansion?

Sika Intraplast NN contains chemical agents that react with calcium hydroxide in fresh cement paste to generate fine gas bubbles at a controlled rate. This expansion in the fresh plastic state compensates for the volumetric shrinkage that occurs as cement grout sets and cures, resulting in a net zero-shrinkage or slightly positive expansion grout.

Can Sika Intraplast NN be used for post-tension duct grouting?

Yes. Sika Intraplast NN is suitable for post-tension duct grouting where it produces a non-shrink grout that completely fills the duct around tendons. However, for critical post-tension applications, always check that the grout mix design meets the project specification and engineer requirements.

What is the dosage of Sika Intraplast NN?

Typical dosage is 0.5 to 1.0% by weight of cement. Dosage should be determined by trial mix to achieve the required expansion and strength without over-expansion. Contact Space Arc Engineering for mix design assistance.

Source Sika Intraplast NN for Your Project

Space Arc Engineering is an Authorized Project Distributor for Sika India serving Delhi NCR, Ghaziabad, Noida and Uttar Pradesh.

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