Tunnel Water Leakage Sealing with Microfine Cement Grouting: K1000 vs K1340 Selection Guide

Release time：2026-01-19

Learn how microfine cement grouting seals tunnel water leakage and consolidates fractured zones. Includes K1000 vs K1340 selection, workflow, and quotation checklist (MOQ 20 tons).

Tunnel water leakage is commonly caused by micro-cracks, joints, and fractured zones. In many cases, conventional cement grout cannot fully penetrate fine fissures, leading to repeated leakage. Microfine cement is designed to improve penetration and build a dense sealing body with high strength and durability.

Why Microfine Cement?

Kangjing’s “Panlongshan” microfine cement is an inorganic mineral grouting material produced through crushing, grinding, shaping, classification, and separation. Typical particle size is 1–10 μm, offering strong penetration, high cured strength, and volume stability—while remaining environmentally friendly compared with chemical grouts.

K1000 vs K1340: Which One Should You Choose?

Use the quick guide below:

K1000 (1000 mesh)Balanced penetration + workability Suitable for mining, hydropower, petroleum, and deep strata projects

K1340 (I grade / 1340 mesh) Finer particle distribution and stronger penetration for more demanding sealing tasks

Key Technical Data (Reference)

Microfine cement grades and typical measured values (for reference; actual batch test data applies):

K1000: D50 ≤ 6 μm (measured 5.17), 3-day compressive 50.3 MPa, 28-day compressive 72.6 MPa

K1340: D50 ≤ 5 μm (measured 4.31), 3-day compressive 52.3 MPa, 28-day compressive 79.6 MPa

Typical Grouting Workflow (Step-by-Step)

1.Assessment: locate leakage points, identify crack/joint/fracture patterns

2.Drilling & Packers: drill injection holes, install packers

3.Mixing: prepare stable grout with controlled water-cement ratio

4.Injection: control pressure and flow to avoid blowouts

5.Observation: monitor grout take and inflow reduction; adjust as needed

6.Curing & Verification: verify sealing effectiveness; apply supplementary injection if required

Applications

Microfine cement can be used for tunnel/metro waterproofing grouting, dam and underground water sealing, fractured zone reinforcement, oil & geothermal well leakage repair, and more.

MOQ & Documents

Recommended MOQ: 20 tons (project-based discussion possible)

Documents available: TDS / MSDS / COA (upon request)

Contact for Selection & Quick Quote

Send your country + application + required quantity + delivery port:

WhatsApp: +86 18809236578

Emeil：jinshipolkmn@gmail.com

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