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How to make quick masonry fixings
Civil work
Edification
SoluciónHow to make quick masonry fixings
Descripción sistema
Masonry work such as grouting, small anchorages, fixing door and window frames, fixing clamps, sanitary fittings, hinges… requires the use of very fast hardening mortars, capable of providing very high mechanical resistance in just a few minutes.
The solution is to usePROPAM® REPAR 20R, i.e. a mortar formulated on the basis of high-strength cements and special quick-setting and hardening additives.
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Solution
PREPARATION OF THE SUBSTRATE
The substrate must be firm (minimum tensile strength of 1N/mm2), rough and free of oils, old paint residues, release agents, dust, cement slurry, etc.
Moisten the substrate with water before applyingPROPAM® REPAR 20R.This operation must be carried out with particular care if the surfaces are very absorbent (mixed walls, bricks) and if they are exposed to the sun.
The substrate temperature must be a minimum of +5°C and a maximum of +30C and care must be taken to ensure uniform temperatures during application and curing.
APPLICATION
MixPROPAM® REPAR 20R according to the instructions given in its data sheet.Mix with a trowel or spatula until a homogeneous, lump-free paste is obtained.It is possible to prepare a larger quantity and in this case it is advisable to use an electric mixer.Prepare each time the quantity of paste that can be used.Apply quickly, as it sets very fast.
OncePROPAM® REPAR 20Rhas been kneaded, it can be applied by trowel or trowel.The application time is approximately 10 minutes.
Curing is indispensable when the material is applied in conditions of strong sunshine, dryness, etc. This can be done with plastics, watering, wet burlap, etc.
UsePROPAM® PRONTO, a ready-to-use rapid-setting thick mortar for filling thicker voids.
BASIC COMPARATIVE
| Applications | PROPAM® PRONTO | PROPAM® REPAR 20R |
| Aristados | X | X |
| Small anchorages | X | X |
| Framing | X | X |
| Revoked in cold weather | X | X |
| Rapid assembly of partition walls | X | X |
| Laying manhole covers | X | X |
| Fixing of clamps, pipes, sanitary fittings and hinges | X | X |
| Installation of electrical installation boxes and regatings | X | X |
| Sealing of concrete pipes | X | |
| Stopping slight water seepage in buried structures, basements, pits… | X | |
| Quick anchoring of pipe penetrations, railings… | X | X |
| Progression of long-term resistances | X | |
| Seawater resistance | X | |
| Resistance to aggressive water (up to pH=4) | X |
TECHNICAL DATA
| Applications | PROPAM® PRONTO | PROPAM® REPAR 20R |
| Life time of the mixture | 20 min | 5 min |
| Initial setting time (20ºC) | 30 min | 10 min |
| Final setting time (20ºC) | 60 min | 20 min |
| Compressive strength at 3 hours | – | > 7 N/mm2 |
| Compressive strength at 6 hours | > 5 N/mm2 | – |
| Compressive strength at 24 hours | – | – |
| Compressive strength at 28 days | > 20 N/mm2 | > 25 N/mm2 |
| Flexural strength at 28 days | > 4 N/mm2 | > 6 N/mm2 |
Recommendations
- In summer it is advisable to protectPROPAM® REPAR 20Rfrom the sun and to use cold water for mixing.
- In winter storePROPAM® REPAR 20Rin heated rooms and use water at 20ºC.
- Do not usePROPAM® REPAR 20Rfor structural repair.
- If more speed is needed use PROPAM® FAST
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