DL/T 5785-2019 in English
VALIDTest code of chemical grouting materials for hydropower and water conservancy engineering
- Issued on:2019-06-04
- Implemented on:2019-10-01
- File Format:PDF
- Delivery:Via email within 10 business days
Price(USD)：
$1,020.00
$990.00
$990.00
Introduction
Core test method system
| Material type | Key performance indicators | Test method characteristics |
|---|---|---|
| Epoxy resin | Adhesion strength, compressive strength | 28-day standard curing, viscosity control ≤200mPa·s |
| Polyurethane | Foaming rate, water expansion | 7-day rapid curing, water reaction ratio 1:5~1:3000 |
Technical innovation points
Glass capillary anti-extrusion testFor the first time, it standardized the evaluation of the anti-permeability performance of acrylate materials. It used a φ0.3mm capillary to simulate the micro-crack environment, and the pressure gradient was accurate to 0.05MPa/level.
The standard requires that the specimens be cured at 23±2℃ and the relative humidity be controlled at (50±10)% to ensure data comparability.
Implementation suggestions
- The viscosity test must be completed within 5 minutes after mixing, and the rotor of the rotary viscometer should be selected so that the reading is in the range of 20%-90% of the range
- During the strength test of the consolidated body, the degree of curing must be confirmed before the epoxy resin specimen is demolded (no indentation on the fingertips)
- Waste materials should be disposed of in accordance with the GB18597 hazardous waste standard, and direct discharge is prohibited
Sample only — not a preview of DL/T 5785-2019
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