LIESEN Bitumen – Bituminous Products & Road Maintenance

LIESEN Bitumen – German expertise for Mzansi’s roads

German Expertise for Mzansi’s Roads

Bituminous binders in the Road Construction Industry

Transport infrastructure: “SA’s most valuable public asset” (C. Ramaphosa, 2015)

This asset is best maintained and rehabilitated with bituminous products. LIESEN’s comprehensive supply programme of bituminous road construction materials offers the right solution for your requirements.

Bituminous materials are adhesive, waterproof, strong, durable, versatile & economical.

In many road construction applications bitumen emulsions provide a safe and environmentally friendly system since the risks of fire, burns and emissions are avoided and the processes use less energy.

Bitumen emulsions are often used in methods for labour intensive & enhanced construction of bituminous surfacing.

SHEQ – Safety, Health, Environment and Quality

At LIESEN Bitumen, we commit ourselves to all standards relating to safety, health, environment and quality. As a member of SABITA, we stay abreast of the latest developments in each area and regard improvements as a priority.

Bituminous Products

Penetration grade bitumen
35/50
50/70
70/100

Cutback bitumen
MC10
MC30
MC3000

Bitumen emulsion
Cationic
– Stable grade (CSS 60)
– Premix (CMS 60, CMS 65)
– Spray grade (CRS 60, CRS 65, CRS 70)
– Quick set
Anionic
– Stable mix (SS 60)
Inverted
Modified
– SC-E1, AC-E1
– SC-E2, AC-E2
– CC-E1

Modified bitumen
Cationic
– Stable grade (CSS 60)
– Premix (CMS 60, CMS 65)
– Spray grade (CRS 60, CRS 65, CRS 70)
– Quick set
Anionic
– Stable mix (SS 60)
Polymers
– S-E1, A-E1, C-E1
– S-E2, A-E2
Hydrocarbons
– A-H1
– A-H2

Road Applications

Prime

A prime coat is a spray application of a suitable bituminous binder to a non-bituminous (granular) layer prior to the application of further bituminous materials or layers.

Cutback bitumen	MC10, MC30, MC3000	SANS 4001-BT2
Spray grade emulsion	Inverted emulsion	SANS 4001-BT5

Bond (Tack) Coat

Bond coats (also known as tack coats) are sprayed bituminous binders applied either to a primed granular substrate or a bituminous layer to promote adhesion between the existing surface and an asphalt layer being placed on it. Usually stable mix (anionic or cationic) bitumen emulsion is diluted 1:1 with water to achieve full coverage of the underlying layer with a thin residual bitumen film.

Stable mix grade emulsion	SS60	SANS 4001-BT3
Stable mix grade emulsion	CSS60	SANS 4001-BT4

Slurries

A slurry is in fact a cold-prepared asphalt mixture used as either a maintenance measure or as a surfacing – or part thereof – in new construction. “Microsurfacings” are slurries that are specially prepared and applied in thicker layers (say > 10 mm) and incorporate purpose-made rapid setting emulsions.

Quick set

Modified cationic emulsion	AC-E1	specified in TG1
Modified cationic emulsion	AC-E2	specified in TG1

Slow set

Stable mix grade emulsion	SS 60	SANS 4001-BT3
Stable mix grade emulsion	CSS 60	SANS 4001-BT4

Crack Sealants

Seals

Spray seals:

e.g. Sand/ Grit seals, Single stone seals (including single stone and sand blinding layer), Multiple stone seals (Double or Triple stone seals) and Graded aggregate seals e.g. Otta seals.

Combination seals:

e.g. Cape Seals (Single stone seal with one or two layers of slurry) and Slurry-bound Macadam seals.

Cover spray

Application of emulsion or diluted emulsion covering the aggregate and forming part of the initial seal design. A cationic spray grade emulsion is normally used for this purpose.

Fog spray or rejuvenation spray

Application of anionic emulsion, diluted anionic emulsion or invert emulsion rejuvenator for purposes of adding additional binder to the seal or rejuvenating the seal at a later stage of the seal life.

The selection of binders should always be based on specific needs and particular constraints and should never be regarded as a substitute for good design and construction practice.

Spray seals consist of ordered applications of one or more bituminous products and aggregates. A wide range of bituminous binders is used for spray seals, such as:

Penetration grade bitumen	70/100	SANS 4001-BT1
Penetration grade bitumen	150/200	SANS 4001-BT1
Cutback bitumen	MC 3000	SANS 4001-BT2
Elastomer modified bitumen	S-E1	specified in TG1
Spray grade emulsion	CRS 60, CRS 65, CRS 70	SANS 4001-BT4
Modified bitumen emulsion	SC-E1 (65)	specified in TG1
Modified bitumen emulsion	SC-E2 (70)	specified in TG1
Bitumen rubber	S-R1	specified in TG1

Premixed Asphalt

Cold mixes use less energy and produce fewer emissions than hot mixes. Cold mix plants are lower cost, simpler and more mobile than hot mix plants and emulsion mixes lend themselves to on-site and in-place manufacture. The ability to stockpile material for future use leads to less waste and reworking than with hot mix.

Premix grade emulsion	CMS 60	SANS 4001-BT4
Premix grade emulsion	CMS 65	SANS 4001-BT4

Stabilisation

Bitumen stabilisation normally entails the upgrading of the quality of readily available pavement materials by treatment with relatively low concentrations of bitumen (normally < 3% by mass). The use of stable mix grade enables proper mixing of the binder with dense graded materials with high fines content and extended workability periods for good dispersion.

Stable mix grade emulsion	SS 60	SANS 4001-BT3
Stable mix grade emulsion	CSS 60	SANS 4001-BT4
Foam bitumen	70/100	SANS 4001-BT1

LIESEN Specialities

LIESEN-Bitunaht is specifically used in hot mix asphalt applications as bonding agent in the longitudinal joint. In “cold joint” situations optimum bonding is achieved between existing and newly laid hot mats. The LIESEN-Bitunaht provides maximum protection against parting or splitting of the joint.

Bitunaht H: roads carrying low to medium volume traffic
Bitunaht HP: heavily loaded roads

LIESEN-Bituplast L is a ready-to-use, cold applied and fast curing polymer-modified bitumen compound with fibre and mineral reinforcement. As a joint sealant LIESEN-Bituplast L is very pliable due to its adhesive and solvent–based constituent materials and therefore also fills pores and depressions. Once applied, the compound is almost immediately waterproof, even if it has not yet set completely. LIESEN-Bituplast L is particularly suitable for joints in asphalt surface layers (both longitudinal and transverse).

LIESEN-BITUREP: Rainy periods often signal the onset of road damage. To repair such damage we can offer you our cold-applied repair material – BITUREP-E (emulsion-based) and BITUREP-L (solvent-based) for smaller repair works.

Profile

Established in 1953 as a coal merchant, LIESEN is a family owned company with its origin in Germany. LIESEN looks back at more than 30 years experience as a specialised manufacturer of bituminous road construction materials.

Reliability and entrepreneurship built an international company which constantly adds innovative products to its portfolio and forges long-term partnerships with selected market leaders.

Contact

Please call us on 043 004 0041 or send us an email on info(at)liesen.co.za to find out more about LIESEN Bitumen and its products.

LIESEN Bitumen – German expertise for Mzansi’s roads

German Expertise for Mzansi’s Roads

Bituminous binders in the Road Construction Industry

Transport infrastructure: “SA’s most valuable public asset” (C. Ramaphosa, 2015)

SHEQ – Safety, Health, Environment and Quality

Safety:

Health:

Environment:

Quality:

Bituminous Products

Road Applications

Profile

Contact