K1340 Microfine Portland Cement

Achieve precision and detail in grouting with Panlong Mountain® K1340 microfine cement. This specialized solution is designed for ultra-fine particle injections, making it ideal for stabilizing intricate and delicate rock structures. K1340 ensures superior bonding, refined results, and targeted reinforcement in tunneling and mining applications.

Additional information

Chemical Name

Micorfine Portland Cement





Delivery Time

3 days



Packaging Details

20kg bag, 25kg bag, Customized, Jumbo bag

Free Sample



Gouting, Injecting

Minimum Order Quantity


Product details


Microfine portland cement is a type of cement that has very fine particles and a high specific surface area. It is used for grouting applications in rock and soil injection, where it can penetrate into tight joints, fissures and pore spaces, and provide a watertight and durable seal. Microfine portland cement can also improve the strength and stability of the grouted mass, and resist chemical attacks and corrosion.

There are different grades of microfine portland cement available in the market, depending on the fineness and the setting time. One of the common ways to measure the fineness of cement is by using the mesh size, which indicates the number of openings per inch of a sieve. The higher the mesh size, the finer the cement particles.



  • Ultra-fine particle size for detailed injections.
  • Exceptional surface penetration into microfractures.
  • Ideal for precision grouting in mining and tunneling.
  • Superior bonding for stability in delicate rock structures.
  • Provides a refined result in fine-detail injections.


Technician Data


Grain Size D50<7.4µm<5.7µm<3.9µm<2.4µm
Grain Size D95<22µm<16µm<12µm<5µm
Fineness (Blaine)>609m2/kg>763m2/kg>810m2/kg>970m2/kg
Run out time after mixing31-35s31-35s31-35s31-35s
Initial Set125min91min97min48min
Final Set195min135min101min97min
Rupture, 3days7.1MPa6.7MPa7.0MPa7.2MPa
Rupture, 28days9.1MPa9.2MPa9.6MPa9.8MPa
Compressive, 3days49.8MPa47.8MPa51.6MPa52.7MPa
Compressive, 28days69.7MPa69.7MPa77.3MPa79.5MPa


Applications Filed

  • Precision grouting in intricate geological formations.
  • Fine-detail injection to seal microfractures in rock.
  • Reinforcement of specific areas in tunnel construction.
  • Stabilization of delicate or sensitive rock structures.



Kangjing’s microfine portland cement has a shelf life of six months when stored in sealed bags, kept dry and out of direct sunlight.



Kangjing supplied in 20 kg bags, 25 kg bags or 1000 kg bags.
Any other option can be customized


Pot Life

The mix should be kept under constant agitation prior to injection. Do not keep mix in agitator longer than 30 to 40 minutes.

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