Product Data Sheet Show all documents

SikaTard® R

Set retarding/stabilising admixture

SikaTard® R is a liquid admixture developed for the control of cement hydration. SikaTard® R retards/stabilises sand/cement masonry mortars/Grouts and concrete mixes.

SikaTard® R provides the following beneficial properties:
  • Improvement in open time for backfill grouts in tunnel
  • Increased setting time in hot weather concreting
  • Accelerated hardening after setting
  • Increased ultimate strengths
  • Long lasting control over slump/flow loss.
  • Better surface finish
  • Chloride free: does not attack reinforcement
Product Data Sheet Show all documents

Usage

SikaTard® R is used as retarding/stabilizing admixture in concrete, grout where a controlled extention of setting time is required.
  • Large volume pours
  • Backfill grout stabilization in tunnel
  • Avoiding of cold joints
  • Construction joints
  • Difficult placing conditions
  • Elevated temperature
 

Advantages

SikaTard® R provides the following beneficial properties:
  • Improvement in open time for backfill grouts in tunnel
  • Increased setting time in hot weather concreting
  • Accelerated hardening after setting
  • Increased ultimate strengths
  • Long lasting control over slump/flow loss.
  • Better surface finish
  • Chloride free: does not attack reinforcement

Packaging

230 kg drum

Colour

Clear to light brown liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Conforms to the requirements of BS EN 934-3 Table 3, ASTM C 494 Type B, IS 9103
Product Information

Chemical Base

Special polymer composition

Shelf Life

12 months from date of production if stored properly in undamaged unopened, original sealed packaging.

Storage Conditions

Store in dry conditions at temperatures between +10°C and +40°C. Protect from direct sunlight and frost.

Density

~1.06 kg/l at 25°C

pH-Value

≥ 6

Application

Application Information

Compatibility

SikaTard® R may be combined with many other Sika products.
Important: Always conduct trials before combining products in specific mixes and contact our Technical Service Department for information and advice about any specific combinations.

Compatible with all types of cements and cementitious materials.

DISPENSING

SikaTard® R can be dispensed directly into the mixing water or added simultaneously into the mixer.
Consumption

Recommended Dosage

0.20 – 1.5% by weight of cement. The retardation rate achieved is directly dependent on the dosage rate which in turn is influenced by quality of cement and aggregates, w/c ratio and temperatures.

It is advisable to carry out trial mixes to finalise the optimum dosage rate.
Application steps

APPLICATION INSTRUCTIONS

Documents