St Astier Natural Hydraulic Limes (NHL)
- Conforms to European Norms EN 459 and BS 459
- Strength factor: 3.5 (Moderately hydraulic)
- Residue @ 0.09 mm: 6.5%
- Density (volumetric weight) : typical 650gr / litre
- Available (free) lime after slaking Ca(OH)2: 25% +
- Packing: 25kg. Bags
- Contains no additives.
- Whiteness index: 72
- Surface cover (cm2pergram): 9000
- Expansion : < 1mm
- Residue of quick lime after slaking: < 1%
- Shelf life: 8-12 months kept sealed and dry
| MORTARS |
Compressive strengthN/mm2 |
Elasticity Moduli (Mpa) |
| MIX RATIO |
EN459* |
1 : 2 |
1 : 2.5 |
1 : 3 |
1 : 2 |
1:2.5 |
1 :3 |
| 7 DAYS |
|
0.75 |
0.57 |
0.53 |
|
|
|
| 28 DAYS |
3.5* |
1.88 |
1.47 |
1.34 |
9010 |
9000 |
8070 |
| 6 MONTHS |
|
7.1 |
5.34 |
3.94 |
15260 |
13501 |
13150 |
| 12 MONTHS |
|
7.5 |
5.90 |
3.90 |
15280 |
13620 |
13150 |
| 24 MONTHS |
|
8.63 |
6.00 |
3.97 |
17480 |
13785 |
13670 |
Consumption for 1m3
of mortar Kg. +/- 10% |
|
305 |
244 |
216 |
|
|
|
| EN 459/BS 459 ( mortar ratio 1:1 by volume, with ISO 679 Sand) |
Mixing: can be mixed in cement mixers.
Application by spray gun: possible. Please consult us.
Working temperatures: not below 5oC or above 30oC. Make sure that high suction materials are thoroughly dampened before application. Avoid rapid drying due to high temperatures or strong winds by curing with a light water mist several times a day if necessary.
SUITABLE FOR LATH WORK / LIME CONCRETE/INJECTION/GROUTING See relevant sheets
Reworking: possible within 12 hours
Mortar composition: MASONRY/POINTING/ CAPPING/ BEDDING/ ASHLAR (See Images)
Binder: sand ratio: from 1:1.5 to 1:3 depending on the support/background conditions, the size of the joint and the fineness of the sand. Always use well graded sands ( 3 - 4mm down to 75 microns).
RENDERING
A. Scratch coat (3-5mm) 1 VOLUME OF NHL 3.5 : 1.5 VOLUMES OF SAND - Cast on
B. Undercoat (15-20mm) 1 VOLUME OF NHL 3.5 : 2 VOLUMES OF SAND*
C. Finishing (5-10mm) 1 VOLUME OF NHL 3.5 : 2.5 VOLUMES OF SAND
With very fine sands possibly containing clays the binder content may have to be reduced.
*At this dosage the consumption is approx. 0.35kg. of NHL 3.5 per m2 for each mm thickness.
Call us for more information