RureGold 2019 Update

2. Introduction to Laterlite

3. Laterlite S.p.A. was founded in 1964 in Rubbiano (PR) Italy
by a group of investors who were interested in bringing the Italian
construction market a very innovative aggregate:
EXPANDED CLAY
From this aggregate Laterlite manufactures many lightweight insulating
products for construction, civil and geotechnical engineering, industrial and
horticultural applications
Rubbiano Factory in 1966 Rubbiano Factory TODAY
Laterlite: 55 years of activity

4. Laterlite is owned by the Giovannini family, Beldi S.p.A and
Buzzi Unicem S.p.A.
Laterlite: Shareholders
30%
Buzzi
Unicem
S.p.A.
70%
Subalpina
Leasing
S.p.A.
33,3%
Buzzi
Unicem
S.p.A.
33,3%
Beldì
S.p.A.
33,3%
Famiglia
Giovannini
Buzzi Unicem S.p.A has an annual production capacity of over 41 million tons
of cement, 41 production plants, over 500 readymix batch plants, 12.000
employees and a turnover of 3.205 million Euro, our shareholder Buzzi
Unicem, listed on the Milan Stock Exchange, is one of the world’s leading
cement companies.

5. Laterlite: Offices and Production Plants
Offices:
• Milan, Italy - Headquarters
• Chasselay, France
• Barcelona, Spain
Production Plants:
• Bojano, Italy
• Lentella, Italy
• Enna, Italy
• Rubbiano di Fornovo, Italy

6. Laterlite: Products and Key Markets
- Product Offer:
- Expanded clay aggregates
- “Ultra” light concretes for fills and substrates
- Lightweight screeds
- Screeds and levelling compounds
- Lightweight structural concretes
- Slab connection systems & deck strengthening
- Insulating mortars and plasters
- Special aggregates for agriculture and landscaping
- Ancillary products (primers, acoustic mats, etc..)
- Key Markets:
- Building, both new construction and renovation
- Geotechnical engineering and infrastructures
- Green roofs

7. Laterlite: Ruregold Acquisition
Ruregold FRCM
“vertical”
reinforcement
solutions
compliment
Laterlite’s
multiple
renovation and
reinforcement
“horizontal”
solutions

8. • Laterlite
• LecaSistemi
• Gras Calce
• Ruregold
Laterlite Group: 4 Divisions

9. Ruregold Innovation

10. Ruregold: Innovation as a Driver
Ruregold was established in 2018 from Ruredil, an Italian company
focused on specialty products for the construction industry
• In 1995 Ruredil offered FRP (Fiber Reinforced Polymer)
composite strengthening system for the Italian market.
• In 1998 Ruredil began researching the use of an inorganic
adhesive as a substitution of the epoxy resin, thus introducing the
innovative FRCM (Fabric Reinforced Cementitious Matrix)
system.
• In 2000 the first FRCM field test was completed and a patent
applied.
• Since 2000 3 Million sq.ft of Ruredil’s FRCM have been
applied worldwide
Ruregold’s FRCM systems are innovative and match most
stringent strengthening requirements.
• Ruregold FRCM systems are in compliance with requirement
from ACI 549.4R-13 Guidelines.
• Ruregold FRCM systems are ICC-ES certified. The extensive
testing per AC 434 was carried out at University of Miami.
Ruregold: “Innovation and
Safety in the Genetic Code”

11. Ruregold FRCM Systems:
o Technology
o Advantages
o Installation
o Performance Properties

12. FRCM: Fabric Reinforced Cementitious Matrix
Composite system for structural strengthening
• High strength PBO or Carbon mesh works as continuous reinforcement
• Cement-based adhesive anchors the mesh to the concrete or masonry support
• One or more plies of PBO or Carbon mesh allow to reach the required increase
of load capacity.
Ruregold FRCM Technology

13. PoliparafenilenBenzobisOxazolo
(PBO) bi-directional
Cement-based
Adhesive
PBO-Mesh Gold
70/18 + PBO MX
GOLD Concrete
FRCM Composite Systems: U.S.A. certified
For Concrete
Carbon Mesh
Cement-based
Adhesive
C-Mesh Gold 84/84
+ C MX GOLD 25
For Masonry

14. Type of Fiber
Ultimate Tensile
Strength
Tensile Modulus
Elasticity
Ultimate
Elongation
Density Heat Resistance
Coefficient
Thermal
Expansion
Ksi / (MPa) Ksi / (GPa) %
lb/ft3 / (gr/
cm3)
°F / (°C)
10 –6
°F –1 /
(10 –6
°C –1
)
PBO 840 / (5,800) 40,000 / (270) 2.15 97.4 / (1.56) 1200 / (650) -3.4 / (-6)
Carbon
550 - 700
(3,500 - 4,800)
35,000 - 55,000
(230 - 375)
0.9 - 2.1 109 / (1.75) 2,550 / (1,400) -80.6 / (-145)
Aramidic
(Hi-Mod)
290 - 400
(2,000 - 2,800)
15,000 - 17,000
(109 - 120)
1.7 - 2.4 90.5 / (1.45) 1020 / (550) -1.1 / (-2)
Aramidic
(Low-Mod)
95 / (650) 2,500 / (17) 2.2 86.2 / (1.38) 750 / (400) -1.1 / (-2)
Glass
220 - 500
(1,500 - 3,500)
4,500 – 11,500
(30 - 80)
2.1 - 4.5 156 / (2.5) 2200 / (1200) 3 / (5.4)
Construc.
Steel
50 - 90
(400 - 600)
30,000
(206)
20-30 487 / (7.8) NA 58 / (10.4)
PBO Mesh Vs Alternatives
PBO mesh uniquely combines the tensile proper5es of Carbon fibers with the
elonga5on characteris5cs of Aramidic fibers.

15. PBO: the perfect fiber for FRCM systems
MATRIX
MATRIX
PBO MESH
CHEMICAL BONDS
CHEMICAL BONDS
MOLECULAR STRUCTURE
WHY?

16. Ruregold FRCM Advantages
Easy & Fast Application
o Lightweight material, ideal for vertical and
overhead applications
o Does not require dry substrate, works well
on damp substrates
o Does not require highly specialized crew
Compatibility with Concrete and
Masonry Substrates
o Cement-based adhesive of the FRCM
system provides similar response under
stress as the substrate
o Same response to fire as concrete and
masonry: does not require fire protection
o Aesthetics, same gray color as concrete
Non-toxic
o Safe for applicators with minimal respirator
requirements
o Environmental friendly: non corrosive, does
not contaminate ground
Structural Upgrade
o Increases flexural, shear and axial strength of
structural elements, both concrete and masonry
o Supplements, or replaces, cross sectional loss of
corroded reinforcing steel
o Seismic retrofit. Significant increase of ductility
allows energy dissipation in the event of seismic
forces.
Durability
o Not affected by high service temperatures
o Breathability
o Not affected by UV rays
o Not affected by alkalis
o Does not corrode
Prediction of Failure
o Slippage of fibers after multiple cracking provides
advanced visual prediction of potential failure

17. Installation - Fabric Preparation
PBO and Carbon Fiber mesh come in rolls:
3.3 ft (1 m) wide
49.2 ft (15 m) long
161.4 ft2 (15 m2) surface
PBO Mesh can be cut using Kevlar shears or an angle grinder with a
diamond cutting disk

18. Installation - Mixing
• Precondition the adhesive, PBO-MX Gold Concrete for concrete applications
or C-MX Gold for masonry applications, to 70 ⁰F.
• Mix in a pail using hand-held slow-speed drill or a cement mixer.
• Pour potable water into mixer. Use max 1.7 gal of water (90% of total water
requirement) for 55 lb. bag of adhesive.
• Add the powder to the water while continuously mixing for minimum 2 minutes.
• Add 1.5 pint of water (the remaining 10%) and mix for additional 2 minutes.
• Let the mix rest for 2-3 minutes.
• Mix again for 2-3 minutes.
• Total mix time: 8 to 10 minutes

19. Installation - Initial Layer
Apply the adhesive over concrete or masonry substrate with a steel trowel
at a thin thickness, not exceeding 3/16 in.

20. Installation – Mesh
• Lay a ply of PBO or Carbon mesh with the correct fiber orientation over
the adhesive.
• Lightly press the mesh into the thickness of adhesive using a metal
trowel.
• Each ply of PBO or Carbon mesh must be totally encapsulated in the
thickness of adhesive.

21. Installation - Final Layer
• Complete the installation adding a final layer of the cement-based adhesive
at approx. 1/8 in. thickness when the previous layer of the adhesive is still
wet.
• The mesh must be totally encapsulated into the adhesive.
• The mesh must be lapped 6 in. minimum in the primary direction of fiber
orientation. No lapping of the mesh is required in the secondary direction.
• In hot and dry weather conditions, protect with a curing compound.

22. ICC-ES Testing Report
The AC 434 testing for ICC-ES was carried out by the University of Miami under
the supervision of Prof. Antonio Nanni, who also signed the Design Manual
Prof. Antonio Nanni is the chair of ACI 549.4R – 13

23. ICC-ES: Load Capacity Tests
Concrete Strengthening
• Flexural Tests Beam and slab
– Tests with low and high concrete
– 1 ply and 4 plies
• Shear Tests Beam
– Tests with low and high concrete
– 1 ply and 4 plies
• Columns – pure axial tests
– Tests with small and large specimen
– Circular, rectangular and square cross –
section
– 1 ply and 4 plies
The report also includes product
characterization (shrinkage, void
content, compression, bond and tensile
strength) and environmental tests
(freeze-thaw, aging-alkali exposure)

24. ICC-ES: Load Capacity Tests
Masonry Strengthening
• Flexural Strength (in plane and out
of plane)
– Brick Walls
– CMU Walls
• Shear Strength (in plane)
– Brick Walls
– CMU Walls

25. PBO: Flexural Stregthening
From the AC 434 ICC-ES Report:
“X Mesh Gold FRCM strengthening system provided an increase in capacity for
both structural elements, beams and slabs, that was consistently higher than the
theoretical (design) value.”

26. PBO: Flexural Strengthening - Slab
Control 1 ply 4 plies
When testing the high strength concrete slab, PBO-Mesh Gold increased
flexural strength more than 30% with 1 ply and more than 100% with 4 plies.
Slab:
0, 1, 4 plies
Low Strength Concrete: 4225 psi
High Strength Concrete: 6224 psi
Beams:
0, 1, 4 plies
Low Strength Concrete: 4225 psi
High Strength Concrete: 6224 psi
+ 30%
+ 100%
Source: AC 434 ICC-ES Report

27. PBO: Shear Strengthening
From the AC 434 ICC-ES Report:
“The FRCM strengthening system provided an increase in capacity for both beams,
high and low strength concrete, which was consistently higher than the theoretical
(design) value.”

28. PBO: Shear Strengthening - Beam
When testing the high strength concrete beam, PBO-Mesh Gold increased shear strength more than
30% with 1 ply and more than 65% with 4 plies.
Source: AC 434 ICC Report
Control 1 ply 4 plies
Beam:
0, 1, 4 plies
Low Strength Concrete: 4225 psi
High Strength Concrete: 6224 psi
+ 30%
+ 65%

29. PBO: Axial Confinement
From the AC 434 ICC-ES Report:
“The FRCM strengthening system provided an increase in capacity for all
specimens strengthened with 1 and 4 plies being consistently higher than the
theoretical (design) value.”

30. PBO: Axial Confinement – Circular Column
On large scale circular columns, 1 ply of PBO-Mesh Gold increased elastic deformation and
strength . 4 plies substantially increased both strength and ductility.
1 ply 4 pliesControl
Column Samples:
• Small Scale Circular: 0, 1, 4 plies
• Small Scale Square: 0, 1, 4 plies
• Small Scale Rectangular: 0, 1, 4 plies
• Large Circular: 0, 1, 4 plies
• Large Square: 0, 1, 4 plies
+ Elastic Response
+ Ductility
Source: AC 434 ICC Report

31. Masonry Wall: Flexural (out of plane)

32. Masonry Walls: Flexural Strength Increase
Brick
CMU
1 ply of C-Mesh Gold changed the response of masonry walls to flexural load, from fragile to ductile.
Control
Control 1 ply
1 ply 4 plies
4 plies
+ Ductility
+ Ductility
+ Strength
+ Strength
Source: AC 434 ICC Report

33. Masonry Wall Tests – Shear (in plane)

34. Masonry Walls: Shear Strength Increase
1 ply of C-Mesh Gold provided ductility to the walls while 4 plies increased the strength, especially for
brick walls
1 ply
1 ply 4 plies
+ Ductility
+ Ductility
+ Strength
+ Strength
Source: AC 434 ICC Report

35. o References
o Certifications & Approvals

36. PBO-Mesh Gold: US References
2002: Pittsburgh, PA – Parking Garage, Shera Retrofitting of Girders
2008: ADM Cedar Rapids, IA - Tank Base Confinement (High Ambient Temperature)
2008: Maple Leaf Foods Brandon, MB - Strengthening Around Openings (High Ambient Temperature)
2009: Port of Oakland Pipe Oakland, CA, - Strengthening Inside of Pipe (always wet)
2010: Metro North Railroad, NYS - Confining Trestle Tower Base (Breathable)
2010: Red Star Yeast Cedar Rapids, IA -Tank Base Confinement (High Ambient Temperature)
2010: University of Missouri Columbia, MO - Confining Monument Tower Base (Breathable)
2011: ADM Cedar Rapids, IA, Tank Base Confinement (High Ambient Temperature)
2017: Post Food Plant, MI -Reinforcement of the Ceilings (Jammed Surface with Fasteners)

37. Metro North Railroad: Cornwall Station, NYS
Confinement of the
plinths damaged by
freeze-thaw

38. PBO-Mesh Gold: Bridge and Viaduct References
2007: Ponte Tre Archi, Castropignano (Campobasso)
Restoration and static consolidation
2010: Railway line Rome-Formia – Naples
Restoration and strengthening of a railway bridge
2011: Lerici Viaduct (La Spezia)
Restoration and strengthening
2012: Gemignani Viaduct, A7 Highway
Restoration and strengthening
2012: Road Bridge, Urbania (Pesaro Urbino)
Static consolidation
2013: Biddemi Bridge, Marina di Ragusa
Static repair gridwork deck
2016: SS-4 Salaria Viaduct, Roma
Safety and restoration work, reinforced concrete viaduct
The viaduct, stressed by the seismic events occured in 2016, remained intact
2016: At km 4+756 metres on Provincial Highwa 78 Picena - Abbazia di Fiastra · Tolentino (MC)
Structural reinforcement of a brick bridge
2017: Railway Santa Palomba Viaduct, Latina
Restoration and strengthening

39. PBO-Mesh Gold: Bridge and Viaduct References
2017: Railway Capranica Viaduct, Latina
Restoration and strengthening
2017: Railway Campoleone Viaduct, Latina
Restoration and strengthening
2018: Railway Tre Croci, Latina – Rome – Chiusi line, Rieti
Restoration and strengthening
2018: Goriano Sicoli Gallery, Railway station Anversa degli Abruzzi, Loc. Villalgo (L’Aquila)
Restoration and strengthening
2018: Railway Farfa Viaduct, Line Latina-Rome-Chiusi, Rieti
Restoration and strengthening

40. Ponte Tre Archi, Castropignano (Campobasso)
PBO-Mesh Gold: Bridge and Viaduct References

41. Lerici Viaduct (La Spezia)
PBO-Mesh Gold: Bridge and Viaduct References

42. Gemignani Viaduct, A7 Highway
PBO-Mesh Gold: Bridge and Viaduct References

43. Road Bridge, Urbania (Pesaro Urbino)
PBO-Mesh Gold: Bridge and Viaduct References

44. SS-4 Salaria Viaduct, Roma
PBO-Mesh Gold: Bridge and Viaduct References
The bridge, stressed by the
seismic events occured in 2016,
remained intact

45. At km 4+756 metres on Provincial Highwa 78 Picena - Abbazia di Fiastra · Tolentino (MC)
PBO-Mesh Gold: Bridge and Viaduct References
The bridge, stressed by the seismic events
occured in 2016, remained intact

46. Railway bridges and viaducts
PBO-Mesh Gold: Bridge and Viaduct References
Railway Santa Palomba Viaduct, Latina
Railway Farfa Viaduct, Line Latina-Rome-Chiusi, Rieti

47. Certifications & Approvals
Product Certifications
USA
• E.S.R. NO. 3265: ICC-ES Evaluation Report.
Italy:
• CVT July 2018: Certificate of Technical Evaluation pursuant to Chapter 11,
point 11.1 letter c) of the Ministerial Decree of 17.1.2018.
• CVT: Certificate of Technical Evaluation in the approval phase.
Product Approvals
USA
NYC Buildings for NYC Construction Codes:
• BC 1901; BC 703; BC 704.3; BC 803; BC 1704.14
• BC Chapter 14; AC 28-103.8