14 04 2020

CEMRESTORE WEBINAR

PROMPT Natural , an historical and modern binder for heritage building restoration

CAPPELLARI Marco Product Development Manager @VICAT

1 Summary

PROMPT Natural Cement “Only one natural stone“

History Production Properties & Quality Restoration application

2 Since 170 years

1855 - Casamaures - (French). A global construction built with Natural Cement : structure and decoration At the beginning

1796 - The first natural cement was discovered by J.Parker : he burned a low temperature, a natural stone (septaria) discovered in Sheppey island (UK).

1817 – The beginning of artificial cement industry, Louis VICAT discovers the theory of hydraulicity.

4 History

In the 19th century, Natural Cement was the most employed hydraulic binder.

• High quality and various setting time

• Low production cost (low burning temperature)

France was one of the main important producer of natural cement

• 1802, Boulogne sur mer

• 1827, In Pouilly-en-Auxois

• 1842, Porte de plant in Grenoble, Isere.

• 1875, La Perelle plant near Grenoble, Isère (J.Vicat)

5 History of Porte de France

In the 19th century and in the beginning of the 20th century, Prompt Natural Cement was used in various applications

Masonry

Architectural & decoration

Restoration of old masonry

Precast industry

6 Architecture & Decoration

In the XIX century, PROMPT Natural Cement was used for the decoration of the façade (artificial and imitation stone, decoration, ornament, run and prefabricated moulding, renders…) 7 Architecture & Decoration

Its color and its natural aesthetic effect allow to reproduce different stone effect.

8 Architecture & Decoration

In Italy, G. Mengoni specified in the drawings to use Natural Cement of Grenoble for the ornament on the principal arch of Vittorio Emmanuele II gallery in Milan.

 Vittorio Emmanuele II gallery - Milan (1867) Arch. G. Mengoni

Quality and properties of the Prompt was required also in other European countries.

9 Restoration of old building

Natural cement was used as a binder for repairing stone The advantages : Quality and compatibility, Color, easy to use

Amiens cathedral Restoration Angers Cathedral Restoration Decoration of old building

10 Precast Industry

Cements of Porte de France Prompt was used in precast industry for its fast setting time and its durability

• Pipeline for water sanitation, • decoration elements, ornaments • Artificial stone

1900 Cuynat plant, Grenoble

1885 – Cement of “Champrond de Rostan”, Grenoble

11 Production

2020 “La Perelle plant” – PROMPT stone at the exit of the vertical kiln Origin

Since 170 years, the “Chartreuse” mountain is at the origin of PROMPT Natural Cement

• One geological rock with a homogenous mineralogy

• A marl, natural argillaceous limestone

• An optimal and constant amount of clay 13 Extraction

A special stone extraction in an underground quarry.

14 Extraction

Stone extracted from the quarry is transported by train at la Perelle plant (1500 meters distance).

15 « La Perelle » plant

1875 – La Perelle is the current Prompt Natural Cement plant. It is located in the heart of Chartreuse mountain and is the oldest plant of Vicat.

1842 – Porte de France is the first plant of Prompt Natural Cement located in Grenoble.

16 Production Process

2016 La Perelle , the same traditional process since 170 years.

Burning in vertical kiln (15 m) with a large spectrum of temperature between 500°C and 1200 °C.

A simple grinding without addition.

17 ProductionProperties & Quality

2019 “Chateau d’If” Marseille France – PROMPT is used for its durability for paving and repointing Aesthetic and workability

Quality and regularity performance

Color • Ochre • Natural effect

Fineness Blaine • Rheological behavior • Surface aspect

19 Mineralogy & Quality

Unique mineralogy with high Belite C2S proportion A mineralogy close to the NHL limes

ETA – 07 /0019 CE Marking NF P 15-314 Prompt Natural Cement Standard NF P 15 – 317 See work standard

20 Rapid Hardening

Prompt / Sand Acide Citric Quick-setting time and hardening Volume 7g par Liter 10°C 20°C 30°C

2/1 Non 4 min 2 min 1 min • At 20°C the initial setting time is 2 minutes 2/1 Yes 30 min 15 min 10 min

1/1 Yes 50 min 25 min 15 min • At 20°C, Rc> 4 MPa after 15 minutes 1/2 Yes 80 min 40 min 20 min

1/3 Yes 110 min 60 min 30 min Adjusted setting time with retarder agent (citric acid)

30 Rapid set and hardening is beneficial for various 25 applications (moulding, fixing, blocking..) especially in

20 cold conditions.

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Résistance 5 1:3 mortie E/C=0.5 0

0 20 40 60 80 100 à la à compression [MPa] Temps [jours]

21 Lime Mortar Compatibility

Main advantages of adding Prompt in lime based mortars

• To reduce delay of application

• To increase durability of mortar in cold conditions

• Vapor permeability of lime mortar could be unchanged

1000 • Reduce the shrinkage of lime based mortar

900 1,5 volume Lime 3,5 NHL )

Total CNP NHL Water vapor Water vapor 800

Binder [kg] 3.5 permeability permeability (µm/m kg/m3 [kg] CNP-NHL 100% NHL 700 (g/m2.h.mm.Hg) (g/m2.h.mm.Hg) 600 1 volume Lime 3,5 NHL Shrinkage 0,5 Volume PROMPT Natural Cement 280 70 210 0,92 0,76 500

400 340 100 240 0,78 0,73 300 360 200 160 0,60 0,57 0 100 200 300 400 Time (day)

22 MainApplications Applications

2019 “Villa Maria Serena” Nice – France – PROMPT is used with NHL for external renders

Hadlow Tower - UK Run Moulding

Run moulding application 1. Preparing support surface : stainless steel fixing, Palazzo Lambertini – Bologna – Italia a layer Prompt slurry Crédit photo / Leonardo SRL 2. Core coat : Mortar layers are applied fresh on fresh and Running mould was passed several times to cut off excesses 3. Finish coat, a slurry consistency to fill fine edges

http://ateliers.paysage.free.fr/chantiermadeleine.htm

24 Cast Moulding

Hadlow Tower - UK

• Precast element produced using a smooth rubber mold • Elements are mechanically fixed in support with a stainless steel • Prompt dosage and mix-design will depend of the Hadlow Tower - UK element geometry

25 Imitation stone

Hadlow Tower - UK

Hadlow Tower - UK

26 Global Restoration

Hadlow Tower - UK

 Repair mortar  Precast Molded elements  Run moulding  Render

27 Paving

Château d’If – Marseille – France. Paving with composed by of NHL 5 and PROMPT Natural Cement  Increase the durability of mortar in aggressive condition (sea spray)

28 ChâteauPaving d’Ifjoint – Marseille – France

2018 “St Cirq Lapopie” – France PROMPT is used for the paving joint (aesthetic aspect) Château d’If - France Repoint mortar joint

Château d’If – Marseille – France Repointing with mortar of lime and natural cement Prompt

30 Thank you for your attention

CAPPELLARI Marco Product Development Manager @VICAT

[email protected]

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