Stone Mastic Asphalt - SMA

Stone Mastic Asphalt - SMA

Specifications in Germany

19841994

1998

2001

2007

2007

Specifications in Germany

ZTV Asphalt-StB 07/13,
German Additional TechnicalConditions of Contract andDirectives for the Construction ofRoad Asphalt Pavements,
updated according to „ARS
11/2012“ published by the Federal
Ministry of Transport, Buildingand Urban Development

Specifications in Germany

TL Asphalt-StB 07/13, German
Technical Conditions of Deliveryfor Asphalt Mixtures for theConstruction of Road Pavements,
updated according to „ARS
11/2012“ published by the Federal
Ministry of Transport, Buildingand Urban Development

Specifications in Germany

Specifications in Germany

Aggregate Requirements

Aggregate Requirements
Properties

Requirements

Main Influence on

Crushed Surface

C 100/0 (100% crushedsurface)

Void content
StabilityHardness

LA < 20

No particle sizes’ destruction
during compaction

Resistance to Polishing

PSV > 51

Roughness
Skid resistance

Shape Index

3:1 (min. 80%)

Void content
Degree of filling
Compaction degree
Stability

Fines

ECS 35

Void content
Stability

FillerLimestone

Void content

Oversize/Undersize

See separate chart

Void content
Stability

Aggregate Requirements

Fraction

CategoryOversizeUndersize

8.0 / 11.2 mm

GC 90/10

10 %

10 %

5.6 / 8.0 mm

GC 90/10

10 %

10 %

2.0 / 5.6 mm

GC 90/10

10 %

10 %

0.0 / 2.0 mm

GF 85

15 %

1.0 / 3.0 mm*

GC 90/10

10 %* Gritting material for early life skid resistance

10 %Aggregate Requirements
Good Coarse Aggregate Skeleton
Coarse Aggregate

Fine AggregateAggregate Requirements
Bad Coarse Aggregate Skeleton
Coarse Aggregate

Fine AggregateSpecifications in Germany

Specifications in Germany
SMA 11 S

Specifications in Germany
SMA 8 S

Specifications in Germany
SMA 5 S

Specifications in Germany

Specifications in GermanyPaving and Compaction - Gritting

Chippings 1 to 3 mm
0.5 – 1.0 kg/m2

Applications

Argentina

Applications

Argentina

Argentina

Applications

Australia

Australia

Applications

BrazilApplications

BrazilBrazil

Applications

India

Applications

India

IndiaApplications

IsraelApplications

IsraelIsraelApplications

Korea

Applications

Korea

Applications
For road construction engineers, connections between two islands
separated by saltwater have always been a big challenge. Careful andsophisticated planning is essential, as is choosing the best material toensure that this connection is long lasting and safe.
In Korea, the engineers who designed the Seohae Grand Bridge whichconnects the island of Pyongtaek (Gyeonggi-do) with Dangjin(Chungcheongnam-do) at mainland South Korea, conducted extensive
studies, and finally decided to use SMA with VIATOP® as the bestsolution for the surface layer for this important connection.
Today, after 16 years in service they have received confirmation that theirdecision was the correct one, as the surface layer of SMA with VIATOP ®
is still there, and still offers an excellent performance.Korea

Applications

MexicoApplications

MexicoMexicoApplications

Philippines

Applications

Philippines

Applications

Philippines

Applications

Philippines

Philippines

Applications

Spain

Applications

Spain

Applications

SpainSpainSpainSpain has two basic climatic areas:▪ The coasts (both Mediterranean and Atlantic):
average minimum temperatures around 10 ºC, andaverage maximum temperatures around 30-35 ºC▪ The inside with a mild continental climate with cold
winters: average minimum temperatures around -5 ºC,
and average maximum temperatures around 40 ºC (thisis the case of Madrid)Applications

TaiwanApplications

TaiwanTaiwanTaiwanNoisePercentage ofpopulation
suffering from noise

Source: Eurostat

Combining PA and SMA
PASMA plus
• Process reliable• Easy to apply and to handle• Simple drainage system• Longer life time (x -> 20 years)• Lower life-cycle costs• Noise reduction

SMA

Noise Reducing SMA

Requirements for SMA plus

Requirements for SMA plus

Source: Extract of E LA D, FGSV 2014

Requirements for SMA plus
SMA plus 8Requirements for SMA plus
SMA plus 5

Applications

Applications

Applications

Applications

Applications

Noise Reducing Asphalt Pavements
PA 8

SMA plus 8Yes
PSV (min. 53)
SI 3:1 min. 92%

No
PSV (min. 51)
SI 3:1 min. 80%

40/100-65 A

40/100-65 A≥ 6.5%≥ 6.6%≥ 0.5 % by weight≥ 0.3 % by weight≤ 3 mm≤ 4 mm

AC 22 B S, AC 16 B S
AC 16 B S - Typ SMA

AC 16 B S
SMA 16 B C

Tack coat

2,000 g/m²

350 – 500 g/m²

Layer thickness

4.5 – 5.5 cm

2.5 – 3.5 cm

Initial costs incl. tack coat€ 15.00 / m²

€ 6.50 / m²

Life time

8 – 10 years

14 – 16 years

Special requirements foraggregates

BinderBindercontent
FibersEvenness binder course
Binder course

180%
162%

140%
120%

80%
60%
40%

100%

SMA LAOPAPA100%

SMA plus(normiert) [%]Nutzungsdauer
Life time

160%

20%

0%
SMA LAOPA

Applications

Applications

Applications

Applications

SMA Binder CourseCurrent Situation in Germany

Distribution Of Loads

Surface Course

Resistence to wear, density

Shearing Strength

Binder Course

Base Course

Stress - truck
Shear - Passenger Car
Shear - truck

Bearing Capacity

Disadvantages
Deformation / Rutting

Disadvantages
Water Immersion

DisadvantagesBlisteringDisadvantages
CrackingRequirements for SMA B CRequirements for SMA B CRequirements for SMA B C
SMA 16 B CRequirements for SMA B C
SMA 22 B C

Characteristics of Layer
Asphalt Binder Courses SMA B CApplications

Applications

Applications

Applications

Applications