Product Data Sheet Show all documents

EQIOM Spinor® A12 Microcement

Ultra-fine microcement for soil and rock grouting, structural rehabilitation and high-performance applications

EQIOM Spinor® A12 Microcement is an ultra-fine hydraulic binder based on blast furnace slag designed for injection applications. Its maximum particle size of 12 μm and highly controlled particle size distribution provides consistent and reliable performance. 

EQIOM Spinor® A12 Microcement provides the following characteristics and benefits:
  • Ultra-fine hydraulic binder based on blast furnace slag, providing a durable and sustainable solution
  • Controlled particle size distribution for consistent performance and reliable results
  • Outstanding injectability and penetrability due to its very low viscosity and yield value
  • Excellent grout stability and long-term durability, with no loss of strength over time
  • High resistance to aggressive environments, including sulphates, chlorides, acids, and leaching
  • Improves soil watertightness and provides effective water sealing in fractured ground
  • Capable of penetrating finer voids and microcracks than conventional Portland cement grouts
  • Effective for the stabilization and consolidation of soils, sands, gravels, and other unstable ground conditions
  • Suitable for the rehabilitation and strengthening of deteriorated mortar, concrete, and masonry structures
  • Cost-effective and environmentally friendly alternative to silicate gels and certain injection resins
  • Compatible with a wide range of admixtures, including set accelerators such as SikaSet® NC, to meet specific application and project requirements
  • Highly versatile and adaptable to a broad range of grouting applications and mix designs
Product Data Sheet Show all documents

Usage

EQIOM Spinor® A12 Microcement can be used in the following applications, but is not limited to:
  • Consolidation and sealing of underground works, foundations and cut-off walls
  • Injection of soils, rock fissures, annular voids, and under-slab cavities
  • Creation of waterproof barriers, and groundwater control systems
  • Rehabilitation and strengthening of deteriorated masonry, concrete and mortar structures
  • Consolidation and regeneration of wells, mines and weakened ground
 

Advantages

EQIOM Spinor® A12 Microcement provides the following characteristics and benefits:
  • Ultra-fine hydraulic binder based on blast furnace slag, providing a durable and sustainable solution
  • Controlled particle size distribution for consistent performance and reliable results
  • Outstanding injectability and penetrability due to its very low viscosity and yield value
  • Excellent grout stability and long-term durability, with no loss of strength over time
  • High resistance to aggressive environments, including sulphates, chlorides, acids, and leaching
  • Improves soil watertightness and provides effective water sealing in fractured ground
  • Capable of penetrating finer voids and microcracks than conventional Portland cement grouts
  • Effective for the stabilization and consolidation of soils, sands, gravels, and other unstable ground conditions
  • Suitable for the rehabilitation and strengthening of deteriorated mortar, concrete, and masonry structures
  • Cost-effective and environmentally friendly alternative to silicate gels and certain injection resins
  • Compatible with a wide range of admixtures, including set accelerators such as SikaSet® NC, to meet specific application and project requirements
  • Highly versatile and adaptable to a broad range of grouting applications and mix designs

Packaging

25 kg bag

Product Details

Product Information

Composition / Manufacturing

Ultra-fine hydraulic binder based on blast furnace slag

Shelf Life

12 months from date of production

Storage Conditions

Store in a cool, dry location, protected from moisture and adverse weather conditions, in the original sealed and unopened bag

Density

Specific gravity

2,940 kg/m3

Granulometry

D100 (100% passing)

12 µm

Bulk Density

700 kg/m3

Surface

Blaine Fineness

> 10,000 cm²/g
System information

System Structure

W/C

0.8

1.0

1.2

  

Density

Fresh Grout Density

1.58 kg/L

1.50 kg/L

1.45 kg/L

   

Viscosity

Flow Time

45 s

33 s

30 s

Note: Marsh cone with a 4.76 mm inside outlet diameter

  

Bleeding

3 hours

0.5 %

1.5 %

2.5 %

  

 

W/C

0.8

1.0

1.2

  

Gelation

Gel Time

3 h 30

4 h 00

5 h 00

With use of set accelerator SikaSet® NC:

Gel Time

2 h 45

3 h 004 h 30

Note: Loss of grout horizontality upon tilting a transparent cylinder

  

Compressive Strength

7 days

22 MPa

17 MPa

14 MPa

28 days

30 MPa

20 MPa

15 MPa

With use of set accelerator SikaSet® NC:

7 days

26 MPa

18 MPa

16 MPa

28 days

32 MPa

23 MPa

21 MPa

  
Technical Information

Specific Advice

EQIOM Spinor® A12 Microcement requires the use of a dispersing agent, such as Sikament®-300N, to ensure proper particle deflocculation and optimum performance. The data presented in this Technical Data Sheet were obtained using 350 mL of Sikament®-300N per 100 kg of EQIOM Spinor® A12 Microcement, corresponding to the minimum recommended dosage for this admixture.

  

To accelerate setting and strength development, a set accelerator such as SikaSet® NC may be used. The data presented in this Technical Data Sheet were obtained using a dosage of 2,940 mL of SikaSet® NC per 100 kg of EQIOM Spinor® A12 Microcement, corresponding to the maximum recommended dosage for this admixture.

  

Actual dosage requirements may vary depending on the application and site conditions, and should be verified through appropriate testing prior to use.

  

The following table presents the properties achieved with EQIOM Spinor® A12 Microcement based on three typical mix designs with water-to-cement ratios of 0.8, 1.0, and 1.2, incorporating Sikament®-300N. Results obtained with the addition of SikaSet®NC are also presented, where applicable.

  

Application

Application steps

EQUIPMENT

EQIOM Spinor® A12 Microcement can be used with the same on-site equipment as conventional cementitious grouts, including:

  • Grouting pump or press
  • High energy mixer (1500 rpm), turbo mixer, or high speed colloidal mixer
  • Low agitation tank (approx. 60 rpm) to keep grout at low viscosity and prevent sedimentation

MIXING

Admixtures, such as the Sikament®-300N superplasticizer, are typically added to the mixing water prior to the introduction of EQIOM Spinor® A12 Microcement. When required, the SikaSet® NC set accelerator is added after an initial mixing period of at least five (5) minutes to ensure complete particle dispersion.

  

The grout should be mixed using high-energy mixing and maintained under low agitation throughout the injection operations. A minimum mixing time of five (5) minutes is recommended. Batch sizes should not exceed 80 % of the total mixing container capacity to ensure optimal grout homogenization.

  

Note:

  • Handling of EQIOM Spinor® A12 Microcement requires the same precautions as ordinary Portland cement.
  • For bulk applications, use clean, dry, and watertight silos.
  • Turbo mixers are recommended. High-speed grout recirculation by a centrifugal pump ensures optimal particle dispersion and excellent grout homogeneity.
  • Colloidal mixers may cause an increase in grout temperature due to the energy generated during particle dispersion. This temperature rise can accelerate grout setting. Adequate temperature control is therefore recommended.

CLEANING

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

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