In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Development of an Appropriate Grout for the Consolidation of the Column Foundations in Our Lady’s Basilica at Tongeren (B)
Author(s): R. Keersmaekers, L. Schueremans, F. Van Rickstal, and D. Van Gemert
Publication: Special Publication
Appears on pages(s): 51-68
Keywords: ancient masonry; binary grout; calcium hydrate; consolidation injection; physical compatibility
Abstract:Archaeological excavations inside Our Lady’s Basilica at Tongeren (Belgium), one of the most beautiful religious monuments in Belgium, are made possible through an adequate consolidation of the columns masonry foundations. The project includes a large archaeological excavation of the central nave up to a depth of more than three meters. To prevent instability of the columns, the foundation masonry is injected with a hydraulic grout. For the preservation of the archaeological remains, possibly available in the soil, the penetration of the grout into the layered soil must be prevented. Specific properties of the grout are thus required. The fluidity of the grout must be sufficient during injection, but has to decrease rapidly after a pre-determined period. Combined with an effective injection procedure, only the foundation masonry will be filled. The archaeological artifacts will thus be preserved. The grout has to be stable and bleeding must be under control. The compressive and bending strength must be sufficient and secured in time. The injectability of the grout in the foundations must be assured. The development of an appropriate grout for the injection of the columns foundation masonry will be described in this paper. The selections of the grout composition, as well as the design of an effective injection procedure are based on laboratory and on site tests. It is demonstrated that a grout containing a mixture of slaked lime and hydraulic cement performed excellently within the preset boundary conditions.
Click here to become an online Journal subscriber