The best slump for lightweight concrete is typically between 3 to 4 inches, balancing workability and strength, and should be adjusted based on specific project requirements.
The best slump for lightweight concrete is typically between 3 to 4 inches. This slump range provides a good balance between workability and strength. A slump that is too low may not be workable, making it difficult to place and finish the concrete. Conversely, a slump that is too high can result in segregation and weakening of the concrete.
The appropriate slump for a given lightweight concrete mixture should be determined based on specific project requirements, taking into consideration factors such as the complexity of the structure, the pumping distance, and the desired surface finish. The reduction of load and excellent thermal insulation properties of modern lightweight concrete increases efficiency in building construction and provides lasting durability.
So, when using lightweight concrete, a slump of 3 to 4 inches is generally recommended to ensure the right balance of workability and structural integrity for most construction applications.