"Structural lightweight concrete mixtures can be designed to achieve similar strengths as normal weight concrete.The same is true for other mechanical and durability performance requirements" (Concrete in practiceâ€¦, 2003, p. Strucutral lightweight concrete also produces a better strength to weight ratio for structural materials.Increased usage can be attributed to the recent industry-wide insulation shortages and delamination deficiencies" (p. The increase can also be attributed to the economic and environmental advantages that lightweight insulating concrete (LWIC) provides in roof assemblies.
lightweight concrete as a roof decking and insulation system has expanded in the past five years.
It is also used for vessels, roof decks and other applications.
Figure 5 shows some examples of lightweight concrete used in different forms.
Lightweight concrete maintains its large voids and not forming laitance layers or cement films when placed on the wall" (p. A great example of the durability of lightweight concrete is 'The Pantheon' in Rome, which was built over 18 centuries ago.
Sructural lightweight concrete is in high demand for use in construction because of its lower density which results in designers' ability to have a smaller foundation due to the use of smaller load bearing elements or cross sections.