RESTORATION AND DECORATION

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Usage:

Restoring of old structures, renovation of historical monuments and works of art in stone, decoration of new constructions, etc.

Applications

  • Rendering of old buildings
  • Decorative rendering on modern materials
  • Faithful restoration (19th century facades and decors)
  • Mouldings: prefabricated or jig-moulded
  • Repointing and repair of stonework
  • Consolidation of stone structures

Main Advantages

  • Minerology completely compatible with lime
  • Perfectly suitable for old supports due to a low Young’s modulus of elasticity
  • Preservation of the permeance (permeability to vapour) of the walls
  • Excellent durability
  • Fast execution of the task
  • No cracking thanks to low natural shrinkage

Rapid Masonry Usage Solutions


1. Natural Cement Mortar

Suitable for a multitude of restoration works to the facades of the 19th and early 20th centuries: prefabricated mouldings, running moulds, imitation stone, plaster repairs, accelerated setting of lime render base coats, gravity injection grouting.

The advantages

  • Important load in one pass
  • Reduced delays between the base coat and the top coat plaster.

DOSES AND CHARACTERISTICS OF NATURAL CEMENT MORTARS VERSUS NATURAL HYDRAULIC LIMES [NHL]

  Natural cement/sand Natural cement/filer/sand NHL 3.5 NHL 5
Doses in volume 1/1* 1/2 1/2.5 1/3 0.7/0.3/2 0.7/0.3/2.5 1/2.5 1/2.5
Permeance (g/m2.h.mmHg) 0.52 0.42 0.43 0.46 0.61 0.64 0.64 0.60
Young's modulus after 1 year (MPa) 28,000 26,000 19,500 19,500 18,000 16,000 13,600 17,300
Compression strength 6 months in water (MPa) 30 14 10 6 5 3 5 6
Workability time with TEMPO (min) at 20 °C, 1 cap/litre 30 40 40 40 50 50 120 120
*sand<1 mm

DOSES FOR GRAVITY INJECTIONS

Prompt
1 x 25kg bag
Tempo
1 to 2 Bottles
Water
17 - 20 L

2. Lime/natural cement mixtures

For facade plasters on old structure, plaster body, roughing-in coats, rejoining, repair of stones, decorative plasters and rough casting of stones. Cf French DTU 20.1 and 26.1.

For gravity injections

The advantages

  • Speeds up the lime
  • Rapid hardening
  • Large load per pass
  • Reduces delays between passes
  • Allows working in cold weather
  • Satisfies lime characteristics

TYPICAL DOSES OF MORTARS [IN VOLUMES]

Desired mixture Natural Hydraulic Lime (NHL) Natural cement Sand Workability time at 20°C
Thin mortar 4 1 15 25 minutes
Average mortar 3 1 10 20 minutes
Thick mortar 2 2 10 15 minutes

DOSES FOR GRAVITY INJECTIONS

Prompt
3 L
NHL 3.5
6 L
Tempo
1 to 3 Caps
Water
8 L

Usage precautions

  • Do not overdose with water, beat or add water.
  • Correct curing is vital.
  • The open time of the mix can be adapted to fi t your requirements by using the cement setting retarder.

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