Natural Lime NHL 5 (Chaux 100 naturelle Pure) Product Data
St Astier Natural Hydraulic Limes (NHL)
| Conforms to European Norms EN 459 and BS 459 Strength factor: 5 (Eminently hydraulic) Residue @ 0.09 mm: 7% Density (volumetric weight) typical: 700 gr. / litre Available (free) lime Ca(OH)2 after slaking: 20-22% Shelf life: 8-12 months kept sealed and dry |
Contains no additives. Whiteness index: 67 Surface cover (cm2per gram): 8000 Expansion : < 1mm Residue of quick lime after slaking: < 1% Packing: 25kg. Bags |
| 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 | 1.96 | 1.00 | 0.88 | n/a | n/a | n/a | |
| 28 DAYS | 5* | 2.20 | 2.00 | 1.5 | 10800 | 1100 | 10000 |
| 6 MONTHS | 7.31 | 5.91 | 5.31 | 18000 | 17050 | 16900 | |
| 12 MONTHS | 9.28 | 8.84 | 6.50 | 18510 | 17280 | 16150 | |
| 24 MONTHS | 10.81 | 8.81 | 7.8 | 21500 | 18020 | 17430 | |
| Consumption for 1m3 of mortar Kg. +/- 10% |
350 | 280 | 233 | ||||
| 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. See “Protecting Lime Mortar”.
SUITABLE FOR LATH WORK / LIME CONCRETE/INJECTION/GROUTING See relevant sheets
Reworking: possible within 8 hours
Mortar composition: MASONRY/POINTING/CAPPING/MASS WALL BEDDING/ FOUNDATION/SEA DEFENCE WALLS/CHIMNEY STACS/NEW BUILD (Masonry)
Depending on the conditions of the support/background, the fineness of the sand and the size of the joints, binder : sand ratio values vary between 1: 1.5 to 1: 2.5
Choose well graded sands (3 or 4mm down to 75 microns).
See also “Applications & Good Working Practices – Sands for Lime Mortars”.
RENDERING
A. Scratch coat (3 – 5mm) 1 VOLUME OF NHL 5 : 1.5 VOLUMES OF SAND Cast on recommended
B. Undercoat (15-20mm) 1 VOLUME OF NHL 5 : 2 VOLUMES OF SAND * (1:2.5 max)
*At this dosage the consumption is approx 0.4 kg. of NHL 5 per m2 for each mm of thickness
C. Finishing (5-10mm) USE NHL 3.5 OR NHL 2, see relevant sheets
For further Guidance, contact your St Astier Distributor.
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