Panlong Mountain® K700 microfine portland cement is a common microfine cement, which has the 7.4μm (800 mesh) average particle size. It is suitable for rock and soil injection in tunnels, caverns, mines, dams, embankments and underground oil storage facilities. It has good permeability, strength and durability properties.
Chemical Name | Micorfine Portland Cement |
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Model | K700 |
Form | Powder |
Delivery Time | 3 days |
Color | Gray |
Packaging Details | 20kg bag, 25kg bag, Customized, Jumbo bag |
Logo | Blank or Customized |
Free Sample | Available |
Usage | Gouting, Injecting |
Minimum Order Quantity | 5,000kg |
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.
Item | K700 | K1000 | K1340 | K2000 |
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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 mixing | 31-35s | 31-35s | 31-35s | 31-35s |
Initial Set | 125min | 91min | 97min | 48min |
Final Set | 195min | 135min | 101min | 97min |
Rupture, 3days | 7.1MPa | 6.7MPa | 7.0MPa | 7.2MPa |
Rupture, 28days | 9.1MPa | 9.2MPa | 9.6MPa | 9.8MPa |
Compressive, 3days | 49.8MPa | 47.8MPa | 51.6MPa | 52.7MPa |
Compressive, 28days | 69.7MPa | 69.7MPa | 77.3MPa | 79.5MPa |
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
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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