Ultrafine Cement K700 (800 mesh)
Suitable for complex geotechnical environments such as tunnel face, dam foundation, and fractured zones.
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Keywords： Ultrafine Cement K700 (800 mesh)
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Product Overview
The ultrafine cement brand “Panlongshan,” produced by Kangjing, is made by physical grinding of ultrafine particles with a particle size ranging from 1 to 10 μm. This product series features strong permeability, early high strength, and dense consolidation, making it suitable for complex geotechnical environments such as tunnel face areas, dam foundations, and fractured zones.
Technical Features
(1) Capable of penetrating microcracks (1–10 μm) to achieve deep-set consolidation;
(2) Compressive strength at 28 days ≥ 80 MPa;
(3) The water-cement ratio and setting time are adjustable;
(4) Highly adaptable to construction conditions, with a seepage-proofing and sealing rate of up to 99.9%;
(5) It causes no environmental pollution, offers high cost-effectiveness in construction, and can effectively shorten the project duration.
Main parameters
Parameter | Model | |||||||
K700 (800 mesh) | K1000 (1000 grit) | K1300 (1340 mesh) | K2000 (2000 mesh) | |||||
Requirements | Measured value | Requirements | Measured value | Requirements | Measured value | Requirements | Measured value | |
Particle size D50 (μm) | ≤8 | 5.67 | ≤6 | 5.17 | ≤5 | 4.31 | ≤3 | 2.16 |
Particle size D90 (μm) | ≤20 | 17.83 | ≤13 | 12.57 | ≤10 | 9.77 | ≤6.5 | 6.39 |
Initial setting time min | ≥30 | 181 | ≥30 | 149 | ≥30 | 129 | ≥30 | 45 |
Final setting time min | ≤600 | 233 | ≤600 | 211 | ≤600 | 195 | ≤600 | 89 |
3-day compressive strength MPa | ≥23 | 42.6 | ≥40 | 50.3 | ≥23 | 52.3 | ≥50 | 59.3 |
3-day flexural strength MPa | ≥4 | 7.1 | ≥5.5 | 7.2 | ≥4 | 7.7 | ≥6.0 | 8.3 |
28-day compressive strength, MPa | ≥52.5 | 77.8 | ≥62.5 | 72.6 | ≥52.5 | 79.6 | ≥75 | 87.9 |
28-day flexural strength, MPa | ≥7 | 9.5 | ≥8 | 8.9 | ≥7 | 9.6 | ≥9 | 10.2 |
Packaging specifications | 25 kg/bag or 1000 kg/bag | 15 kg/bag or 500 kg/bag | ||||||
Testing standards | The data verification method requirements are: Q/KJ 0001 or GB/T 35161. | |||||||
Friendly reminder: This table is not the sole basis for compliance; the inspection data for each batch of products upon factory release shall prevail.
The K700, K1000, K1340, and K2000 each have different particle size distributions and coagulation properties as follows.
(1) K700: Suitable for tunnel/metro, hydropower, and shallow geological engineering projects.
(2) K1000: Suitable for mining, hydropower, petroleum, and deep geological engineering projects.
(3) K1340: Suitable for mining, hydropower, petroleum, and deep geological engineering projects;
(4) K2000: Suitable for engineering projects involving deep foundations in complex rock formations and high-end composite chemical processes.
This product has been widely used in waterproof grouting for subways and tunnels, treatment of fractured zones in mines, dam and groundwater sealing, concrete substrates for electromagnetic and neutron shielding, as well as leak-proof repair in oil wells and geothermal wells. It can significantly enhance the impermeability and stability of underground structures and is suitable for reinforcement and seepage control operations under complex geological conditions.
Application areas
● Metro and tunnel surrounding rock reinforcement and waterproofing works;
● Foundation reinforcement and grouting treatment for structural defects such as cracks in buildings, highways, bridges, and other structures;
● Foundation reinforcement and seepage control works for reservoir dams, as well as seepage prevention and leakage-stopping treatments for fractures and fissures in the bedrock surrounding the reservoir;
● Mine and roadway surrounding rock reinforcement and seepage control projects;
● Groundwater plugging and sealing works for underground mining in mines;
● Concrete substrate with large electromagnetic and neutron shielding properties;
● Leak repair for oil wells and geothermal wells;
● Applications in areas such as wellbore stabilization, leak sealing, and hole plugging for geological drilling operations.
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