Product Data Sheet Show all documents

Sika® ViscoCrete® SC-315 MY

Superplasticiser for conventional and sprayed concrete with long workability retention properties

Sika® ViscoCrete® SC-315 MY is a highly effective superplasticizer with set retarding, long slump retention and mix stabilizing properties. The product meets the requirements for a concrete admixture type FM and VZ according to EN 934-2.

  • Temperature of the fresh concrete
  • Ambient temperature
  • W/C ratio
Product Data Sheet Show all documents

Usage

In shotcrete mixes, Sika® ViscoCrete® SC-315 MY is used in wet spray technology in combination with various Sigunit® accelerators. In conventional concrete mixes, Sika® ViscoCrete® SC-315 MY is used where long slump retention is required in difficult situations like hot climates or poorly shaped coarse and fine aggregates etc. Sika® ViscoCrete® SC-315 MY can be used with:
  • Fine aggregates and sand
  • Crush rock fine / quarry dust
  • Shotcrete and conventional mixes containing Silica Fume or Metakaolin
With the use of Sika® ViscoCrete® SC-315 MY, shotcrete and conventional concrete is retarded and stabilized and can be kept without loss of workability in a transit mixer for more than 3 hours to suit long transit times and site conditions in difficult and remote sites like long tunnels, mines etc. Sika® ViscoCrete® SC-315 MY improved shotcrete and conventional concrete has a long open time and workability, resulting in reduced pump pressure. The combination of Sika® ViscoCrete® SC-315 MY and Sigunit® accelerators greatly increase the early strength development of the concrete.  

Advantages

Sika® ViscoCrete® SC-315 MY strongly plasticizes fresh concrete and allows for a high reduction of the water: cement ratio without negatively influencing the workability of the original concrete mix design. At the same time, cement hydration is retarded for a certain time. Dependent on the dosage, fresh concrete remains stable and retarded for a pre determined time, thus maintaining it’s workability. Stabalised shotcrete can then be accelerated with Sigunit® accelerators at any time without loss of quality. The retardation and retention of workability effects are of course also strongly dependent on the:
  • Temperature of the fresh concrete
  • Ambient temperature
  • W/C ratio
  • Type of cement
  • Cement content
  • Age of cement
Trials for specific projects are absolutely essential. Sika® ViscoCrete® SC-315 MY does not contain chlorides or any other steel corrosion promoting ingredients.  

Packaging

  • Non returnable 220 L steel drums
  • 1 000 L IBC
  • Bulk tanker on request

Colour

Off-white liquid

Product Details

Product Information

Composition

Synthetic dispersing agent and set retarding, stabilizing ingredients

Shelf life

12 months from date of production

Storage conditions

Store in undamaged and unopened original sealed containers, protected from direct sunlight and frost at temperatures between +5 °C and +35 °C.

Density

1.06 ± 0.01

pH-Value

5.0 ± 1.0

Application

Application Information

DISPENSING

Sika® ViscoCrete® SC-315 MY is added to the concrete at the batching plant together with the gauging water. For wet spray concrete a soft concrete consistency (K3) is required. Always make use of the potential water reduction as a result of the plasticizing effect. Batching plant mixing time must be at least 60 seconds for wet plant and 3 minutes for dry plant.

Concrete produced with Sika® ViscoCrete® SC-315 MY should be taken by transit mixer to the point of discharge. During shotcrete applications, Sigunit® is added at the spray nozzle to initiate fast setting.

The standard rules of good concreting practice (in production as well as in placing) must always be observed when using Sika® ViscoCrete® SC-315 MY.
Consumption

Recommended Dosage

0.7–2.0 % of the weight of cement, depend on the required concrete consistency and working time

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