BASF introduces MasterRoc SLF 50 soil lubricating foam

A next generation soil conditioner for efficient excavation in earth pressure balance tunneling construction


BEACHWOOD, OH, June 5, 2018BASF introduces MasterRoc® SLF 50, a new generation soil lubricant that improves performance and increases tunnel excavation efficiency by helping to control the soil during tunneling operations. The soil conditioner reduces friction and helps to increase the advance rate of the tunnel boring machine (TBM) under challenging soil conditions.

“MasterRoc SLF 50 is an advanced solution for the underground construction market. The system keeps excavated soil stable and workable for longer periods, and contributes to the efficiency of the TBM,” says James Lindsay, Regional Business Segment Manager for the Admixture Systems business of BASF’s Construction Chemicals division. “This new soil lubricating foam was used successfully on the SR-99 Seattle Washington tunnel project. It helped to make the soil more cohesive and significantly more stable from excavation and while in the working chamber and conveyor, ultimately making ‘Bertha’, the TBM on the project, more productive.”

Soil conditioners help TBMs maintain face pressure during operation and lessen power consumption through torque reduction, optimize soil extraction and can decrease wear to the cutterhead and screw conveyor. The innovative technology of MasterRoc SLF 50 soil lubricating foam creates a highly stable foam with superior half-life, up to eight times the standard, making it reliable and useable for extended periods, even during planned or unplanned stoppages.  

BASF will be demonstrating the MasterRoc SLF 50 technology during the 2018 North American Tunneling Conference, booth # 401, June 24-27, 2018 at the Washington Marriott Wardman Park Hotel in Washington, DC.

To learn more about MasterRoc SLF 50 soil lubricating foam, or to locate a local BASF representative, visit

About BASF

BASF Corporation, headquartered in Florham Park, New Jersey, is the North American affiliate of BASF SE, Ludwigshafen, Germany. BASF has more than 18,200 employees in North America, and had sales of $17.9 billion in 2017. For more information about BASF’s North American operations, visit 

At BASF, we create chemistry for a sustainable future. We combine economic success with environmental protection and social responsibility. The more than 115,000 employees in the BASF Group work on contributing to the success of our customers in nearly all sectors and almost every country in the world. Our portfolio is organized into five segments: Chemicals, Performance Products, Functional Materials & Solutions, Agricultural Solutions and Oil & Gas. BASF generated sales of €64.5 billion in 2017. BASF shares are traded on the stock exchanges in Frankfurt (BAS), London (BFA) and Zurich (BAS). Further information at

About the Construction Chemicals division

BASF’s Construction Chemicals division offers advanced chemical solutions under the global umbrella brand Master Builders Solutions for the construction, maintenance, repair and renovation of structures. The brand is built on more than 100 years of experience in the construction industry. Our comprehensive portfolio encompasses concrete admixtures, cement additives, chemical solutions for underground construction, waterproofing systems, sealants, concrete repair & protection systems, performance grouts, performance flooring systems, tile-fixing systems, expansion joints & control systems and wood protection solutions. 

The Construction Chemicals division’s approximately 6,500 employees form a global community of building experts. To solve our customers’ specific construction challenges from conception through to completion of a project, we draw on our specialist know-how, regional expertise and the experience gained in countless constructions projects worldwide. We leverage global BASF technologies and our in-depth knowledge of local building needs to develop innovations that help make our customers more successful and drive sustainable construction.

The division operates production sites and sales offices in more than 60 countries and achieved sales of about €2.4 billion in 2017.