"improved foundation" is correct and usable in written English.
You could use it when you want to refer to the basis on which something else is built, or when something has been made better and solidified. For example: "The new CEO's focus on leadership transparency has provided an improved foundation for the company's culture."
With a new, structurally improved foundation, homes were redesigned to be able to withstand another hurricane.
Until the reporting of Aboriginality in disease notification data improves, we recommend that data linkage studies are performed periodically to provide an improved foundation for public health policy.
Multiple-scenario analysis gave Quik-Serv management a better appreciation of the long-term outlook, thus providing an improved foundation for its strategic five-year planning.
Studies of tolerance will provide an improved foundation to describe our interactions with all microbes: pathogenic, commensal, and mutualistic.
The DEM allows a detailed mapping of the shoreline's dimensions and actual distribution and hence provides an improved foundation for interpreting the pronounced features.
Two-dimensional (2D) finite element analyses were performed on floating stone columns using the unit cell concept to investigate the settlement and the consolidation characteristics of an improved foundation system.
The application of geotextiles to improve foundation is described with references to actual projects.
The high cost of these structures has dictated the need for accurate and precise strength measurement as a basis for improving foundation design, efficiency, safety and sediment stability analyses.
It has been proved that the crushed-rock revetment (CRR), used as technique for improving foundation stability in the Qinghai-Tibet Railway (QTR), produces an insufficient cooling effect on warm permafrost; this may affect the stability of the roadbed and pose a threat to its long-term safe operation, particularly in a warming climate.
An improved Winkler foundation model, which could be used to consider the uplift and yield, was employed in the analysis.
Many geotechnical projects today have demonstrated a need for improved soil foundation properties, namely physical and mechanical properties.
