JW ultra-high strength micro-expansion (coal mine special) grouting agent
Classification:
Detailed introduction
JW ultra-high strength micro-expansion (special for coal mines) grouting agent is a kind of high-tech special product which is specially suitable for all kinds of grouting and grouting in coal mines under the guidance and support of relevant leaders and experts of Cement Science and New Building Materials Research Institute of China Building Materials Science Research Institute and relying on the technical strength and product characteristics of the company.
Performance characteristics:
According to the needs of the industry, with large liquidity, 30 minutes to maintain its liquidity in more than 300mm.
The setting time can be adjusted according to the customer's engineering needs, and can be adjusted freely within 90 minutes.
The final setting strength is rapidly exerted, and the early strength is particularly high.
With no shrinkage, micro expansion, waterproof, impermeability, crack resistance and other special properties.
| Model | Unit | Type I | Type II |
| Water-material ratio | 0.14~0.17 | 0.13~0.15 | |
| initial coagulation | min | 15 | 40 |
| Final setting | min | 20 | 60 |
| original fluidity | min | 30 | 340 |
| 30 minute fluidity | min | / | 320 |
| Compressive strength MPa | 2h | ≥ 20.0 | ≥ 15.0 |
| 12h | ≥ 40.0 | ≥ 40.0 | |
| 1d | ≥ 48.0 | ≥ 50.0 | |
| 3d | ≥ 54.0 | ≥ 55.0 | |
| 28d | ≥ 64.0 | ≥ 66.0 | |
| flexural strength MPa | 2h | ≥ 3.5 | ≥ 3.0 |
| 12h | ≥ 5.5 | ≥ 5.5 | |
| 1d | ≥ 6.5 | ≥ 7.0 | |
| 3d | ≥ 7.5 | ≥ 8.0 | |
| 28d | ≥ 8.5 | ≥ 9.0 |
Scope of application:
Especially suitable for coal mine underground and underground engineering waterproof, plugging, grouting, repair and other conditions are more complex engineering needs.
Packaging and storage:
Using moisture-proof packaging, each bag net weight 25~50kg, sealed storage in a dry environment, shelf life of 6 months, open the bag once used up.
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