Product Data Sheet Show all documents

Sikacrete®-703 3D

1-PART MICRO-CONCRETE FOR 3D PRINTING

Sikacrete®-703 3D is a 1-part micro-concrete for use with 3D robot or gantry printers.
Suitable for use in hot and tropical climatic conditions.

Fast absorbing
  • Suitable for continuous and static mixers
1-part
  • Mix only with water
  • Adjustable consistency
Low viscosity
  • For easy pumping
Thixotropic consistency
  • Maintains shape after extrusion
  • Good buildability
Fast setting
  • For building up layers
  • Print line stability and accuracy
  • Printing at angles
  • Moving objects sooner
Low shrinkage
  • Good crack resistance
Optimised grading
  • For smooth appearance
  • Reduced equipment wear
  • Good durability
Product Data Sheet Show all documents

Usage

For concrete printing of 3D objects and components for:
  • Buildings
  • Civil engineering structures
  • Molds and forms
  • Art, craft and visual displays
  • Interior and exterior use
 

Advantages

Fast absorbing
  • Suitable for continuous and static mixers
1-part
  • Mix only with water
  • Adjustable consistency
Low viscosity
  • For easy pumping
Thixotropic consistency
  • Maintains shape after extrusion
  • Good buildability
Fast setting
  • For building up layers
  • Print line stability and accuracy
  • Printing at angles
  • Moving objects sooner
Low shrinkage
  • Good crack resistance
Optimised grading
  • For smooth appearance
  • Reduced equipment wear
  • Good durability

Packaging

25 kg bag, 1500 kg bag

Colour

Grey powder

Product Details

Product Information

Composition

Portland cement, selected aggregates and additives

Shelf life

6 months from date of production

Storage conditions

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Maximum grain size

~1.5 mm

 
Technical Information

Compressive strength

+25°C

1 day

7 days

28 days

w/p=0.145
(3.625 L water
per 25 kg
bag)

~10 N/mm2

~25 N/mm2

~35 N/mm2

Application

Application Information

Fresh mortar density

~2.3 kg/l (25°C)

Layer thickness

~10 – 50 mm (subject to trials)

Ambient air temperature

+5 °C min. / +45 °C max.

Mixing ratio

13 % – 15 % water (by weight of powder)
Consumption

Yield

~12.5 litres per 25 kg
This figure is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.
Application steps

MIXING

Static Mixers (Small volume quantities)
Mix with an electric single or double paddle mixer (<500 rpm) or using a forced action mixer capable of mixing 2 to 3 bags at a time. Add the recommended amount of clean water in a suitable mixing container.
Stir slowly, add the powder to the water and mix thoroughly for a minimum of 3 minutes. Add more water during the mixing time if necessary to the maximum specified amount to achieve asmooth consistent mix.
If necessary and before pumping, let the material stand to allow the air bubbles from entrained air to finish. Stir gently if required.
Continuous Mixer (High volume quantities)
The mixing ratio shall be determined using a pan test heating method or microwave technique (according to Austrian Standard) to determine the equivalent flowrate/m3 on the equipment. Contact Sika Technical Services for additional information.

 

APPLICATION

Pumping and printing is usually a continuous process.
The application specifics of the extrusion and printing speed must be optimised between the mixer, pump, pump line length and printer head.

CURING TREATMENT

When printing, it is recommended to cure the finished printed element with a suitable Sika® Antisol® curing agent.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with water immediately after use. Hardened material can only be removed mechanically.

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