Expanding Grout Admixture
Description An expanding grout admixture in powder form. By introducing micro bubbles into
the mix, it produces wet volume expansion and increased fluidity without
Uses Intraplast Z is used to increase cohesion in cement grouts and is suitable for use in
the grouting of :
■ Pre-stressed cable ducts.
■ Rock and soil anchoring.
■ Bearing plates.
■ Pre-placed aggregates.
■ Tunnel linings.
■ Pre-cast concrete elements.
■ Tilt construction wall panels.
■ Crack injection.
■ Intraplast Z plasticises the mix with water reduction of up to 20%, thu
improving the strength of the grout.
■ Gas generated during setting distributes bubbles causing expansion to take
place (3%-8% by volume) thus compensating for normal shrinkage.
The initial retarding effect of Intraplast Z improves grout penetration, reduces
water separation and bleeding.
■ The expansive forces generated completely fill voids.
Non toxic, non chloride.
Dosage 1- 2%
Typical Dosage 1.5%
Instructions for Use Add directly to the gauging water and mix with cement.
The mixture must be stirred continuously.
For pre-stressed concrete work, a mixing time of 3 minutes with a w/c ratio of 0.42
has been found to give the best results.
It is not recommended to add sand into the mix.
Bulk density Approx. 0.7 kg / ltr
Shelf life 1 year if stored in unopened original container in dry, cool place
Packaging 20 x 0.75 kg bag
■ High alumina cement and cement containing high content of fly-ash are not
suitable for use with Intraplast Z
■ To obtain optimum results (flowability, expansion, bleeding, etc) the suitable
w/c ratio and Intraplast Z / cement ratio shall be determined through trial mixes.
■ Avoid contact with skin and eyes.
■ Wear protective gloves and eye protection during work.
■ If skin contact occurs, wash skin thoroughly.
■ If in eyes, hold eyes open, flood with warm water and seek medical attention
The information, and, in particular, the recommendations relating to the application and end-use of Sika
products, are given in good faith based on Sika’s current knowledge and experience of the product when
properly stored, handled and applied under normal conditions in accordances with Sika’s
recommendations. In practice, the differences in materials, substrates and actual site conditions are such
that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising
out of any legal relationship whatsoever, can be inferred either from this information, or from any written
recommendations, or from any other advice offered. The user of the product must test the product’s
suitability for the intended application and purpose. Sika reserves the right to change the properties of its
products. The proprietary rights of third parties must be observed. All orders are accepted subject to our
current terms of sale and delivery. Users must always refer to the most recent issue of the local Product
Data Sheet for the product concerned, copies of which will be supplied on request.