Question

what is the component in mortar that acts as the glue that holds cmu, brick, and other types of masonry together?
cement
water
sulfate
aggregate

Explanation:

Cement is a binding agent. When mixed with water, it forms a paste that hardens and adheres to materials like CMU (Concrete Masonry Units) and brick. Water is a medium for the chemical reactions in cement but not the glue - like component. Sulfate can be a component in some cements but is not the main binding agent. Aggregate (like sand) provides bulk but no binding property.

Answer:

cement