Dromo joined the Pertamina Mandalika International Circuit upgrade in July 2022 to investigate earlier surface failures and engineer a full-track response. The layout itself remained substantially unchanged, but the three-dimensional track design was revised to improve surface evenness, drainage and run-off performance. Dromo developed the racing asphalt in Europe, refined it with local materials on site and supported contractor PT PP through production and paving.
The track’s three-dimensional design was revised without changing its layout, to improve surface evenness and drainage and prevent standing water. The entire track required resurfacing, and the run-off areas at selected corners required enlargement. The promoter, MGPA, appointed general contractor PT PP (Persero) Tbk to carry out the works.
The original works were scheduled for completion by the end of September 2022. Technical difficulties with local aggregate production delayed paving until late October 2022, at the start of Lombok’s rainy season. Dromo developed the asphalt mix in its European laboratories and refined it on site.
An asphalt plant with a production capacity exceeding 240 tonnes per hour produced the bespoke racing mix, Rinjani. Named after Lombok’s volcano, the mix used locally sourced aggregates to improve the sustainability of the works. Production trials established the Job Mix Formula (JMF), followed by paving trials to confirm the mix and its suitability for placement.
Dromo and its partners supported PT PP (Persero) Tbk with equipment, raw materials and production-process requirements, helping the contractor implement the track design and meet the client’s requirements.
COUNTRY:
Indonesia
TEAM LEADER:
Jarno Zaffelli
PROJECT TEAM:
Sanjay Walia (Project Manager),
Federico Vennarucci (Head of design),
Filippo Piccoli (Site Manager),
Francesco Crotti (Pavement specialist),
Elisabetta Maria Terenziani,
Geronimo Aroldi,
Tatiana Rota.
CONTRACTOR:
PT PP (Persero) Tbk
WORK:
Investigate, engineer and resurface
MIX:
Rinjani
YEAR:
2022
Project engineering in detail
Diagnosing a complete pavement system
The work treated the track as more than a wearing course. Levels, water paths, aggregate production, mix behaviour and construction equipment were reviewed together. Because the works moved into Lombok’s rainy season, the relationship between surface geometry, drainage and production control was central to the delivery strategy.
Developing the Rinjani racing asphalt
The bespoke mix was named Rinjani after the Lombok volcano from which local aggregates were sourced. A plant capable of producing more than 240 tonnes per hour supported the programme. Laboratory design was followed by job-mix and paving trials so that the formulation could be adjusted to the available materials and verified before full production.
Technical support from plant to track
Dromo worked with project partners on equipment, raw materials and production procedures, then connected those controls to paving and the final track geometry. This end-to-end involvement reduced the gap between a laboratory specification and the surface actually delivered under tropical site conditions.
Related Dromo capabilities
Project evidence
Develop the Rinjani mix around real local materials.
Connect milling, paving and compaction to the design.
Verify the result under tropical operating conditions.
