Product Data Sheet Show all documents

Sikacrete®-3701 3D

(former MFlow 3D 100)

2/3-PART MICRO-CONCRETE FOR 3D PRINTING

Sikacrete®-3701 3D is low shrinkage 3D Printing mortar. Sikacrete®-3701 3D, when mixed with water and Sika® Plastocrete®-3701 3D, forms a well-pumpable thixotropic mix, which when combined with SikaRapid®-3701 3D at the print head, achieves high values of compressive and flexural strength in a short time. Suitable for use in hot and tropical climatic conditions.

  • High initial and final strength ensures durability and safety in various conditions.
  • Maintains good workability which enables proper application even when printing long sections at high ambient temperatures.
  • High adhesion to steel which increases the level of cohesion between the mixture and the reinforcement.
  • Can be used with different types of 3D Printers by adjusting the dosage of Sika® Plastocrete®-3701 3D and SikaRapid®-3701 3D
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

  • High initial and final strength ensures durability and safety in various conditions.
  • Maintains good workability which enables proper application even when printing long sections at high ambient temperatures.
  • High adhesion to steel which increases the level of cohesion between the mixture and the reinforcement.
  • Can be used with different types of 3D Printers by adjusting the dosage of Sika® Plastocrete®-3701 3D and SikaRapid®-3701 3D

Packaging

25 kg and 1500 kg bag

Colour

Light 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 sealedpackaging in dry conditions at temperatures between +5°C and +30°C. Always refer to packaging.

Maximum grain size

~0.5 mm

 
Technical Information

Compressive strength

+25 °C

1 day

28 days

W/P = 0.17 + 1 % SikaRapid®-3701 3D

~25 N/mm2

~50 N/mm2

Flexural-strength

~7 N/mm2 (28 d / 25°C)

(EN 196-1)

Water penetration under pressure

~22 mm

(EN 12390-8)

Application

Application Information

Fresh mortar density

~2.2 kg/l

Layer thickness

~5 – 50 mm (subject to trials)

Ambient air temperature

+5°C min. / +45°C max.

Mixing ratio

16 – 18 % water (by weight of powder)
Consumption

Yield

~13 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

We recommend mixing Sikacrete®-3701 3D mechanically, for example with a continuous mixer. As the mixture is thixotropic, we do not recommend mixing with a drill fixed with a stirrer or a mixer with a forced circulation. The mixing process may vary depending on the mixing equipment used, however, it is advisable to start by setting a higher dose of water on the continuous mixer and gradually reducing it to the desired initial fluidity. Discard any mixture that has not been used within 30 minutes.
The plasticizer Sika® Plastocrete®-3701 3D should be added to the mixing water to ensure a homogeneous mix is obtained.

APPLICATION

For the application of Sikacrete®-3701 3D, it is necessary to pump the mixture using a screw pump for cement-based mixtures. The selected pump should ensure an uninterrupted supply of application material. The pump should be equipped with a pressure limiter to prevent the pressure from exceeding 2 MPa; all hoses and couplings used should be tested under this pressure before starting the process.

 


Before application, it is essential to cool the hoses and pre-lubricate them; however, before starting the application, the liquid used for this purpose must be blown out or expelled from the hoses.
In a typical arrangement, the inlets for the application material should be at the lowest point and the outlets at the highest point. The consistency of the injection mixture at the outlet should be checked before starting printing work.
SikaRapid®-3701 3D should be used as an accelerator for set ups which can accommodate an accelerator at the printer head. For more information about which accelerator would be more appropriate, please consult our Sika technical department.

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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