Which of the following statements about lightweight concrete is NOT true?

Lightweight concrete is designed to be less dense than traditional concrete, which inherently makes it lighter. This characteristic is beneficial for construction, as it can reduce the overall load on structures. Additionally, lightweight concrete often incorporates materials such as expanded clay, shale, or pumice, which provide insulating properties and thermal benefits.

The claim that lightweight concrete requires less troweling and finishing is generally accurate because its composition can make it easier to handle and work with. The lightweight aggregates can enhance workability, which means that contractors don't need to spend as much time on finishing processes compared to traditional concrete.

The incorrect statement suggests that more troweling and finishing should be performed with lightweight concrete. This is misleading, as the nature of lightweight concrete usually allows for simpler finishing processes, which means that excessive troweling is not typically necessary and may even be counterproductive. For optimal results, it is important to strike a balance during finishing to ensure the surface is smooth without compromising the intrinsic qualities of the lightweight mix.