Question

Which group of concrete uses expanded aggregates such as perlite?

1) I
2) II
3) III
4) IV

Answer 1

Lightweight concrete is the group that uses expanded aggregates like perlite, promoting faster construction, durability, and superior thermal insulation.

Step-by-step explanation:

The group of concrete that uses expanded aggregates such as perlite is lightweight concrete. Perlite is one of several lightweight coarse aggregates mixed with fine aggregates like shale, clay, or slate, which contribute to the concrete's reduced mass and improved insulating properties.

The expanded aggregates make the concrete lighter, facilitating faster building rates, endowing the structure with longer-lasting qualities, and greatly enhancing its performance as an excellent thermal protector when compared to traditional materials such as brick.