Concrete

Question 1

AB: Why would you fill a hollow CMU

Answer 1

Grout: easy-flowing cementitious material poured into a CMU wall

• used for compressive strength
• horizontal rebar and vertical rebar added for tensile strength
• used for load bearing walls (including those that resist seismic)
  -https://imiweb.org/wp-content/uploads/2015/10/02.410.0132.pdf

Question 2

What is a better insulator hollow CMU or grout filled CMU?

Answer 2

Hollow CMU blocks are better insulators than grout filled
But weaker than grout filled reinforced block

Question 3

What is Vermiculate - filled CMU?

Answer 3

Vermiculite - is a loose granular mineral poured into the cavities for increased thermal resistance
-in older construction may contain asbestos

Question 4

What is perlite?

Answer 4

Perkite is used to pour into CMU walls for increased thermal resistance
- slightly better than vermiculite

Question 5

Polystyrene bead insulation

Answer 5

-syrofoam beads poured into the top of CMU block

Question 6

Injection foam filled

Answer 6

increases thermal resistance
can be inject from either the inside or outside and doesnt need to be poured at top of wall if not accessible

Question 7

TYPE I Portland Cement

Answer 7

General Purpose
preferred for typical application
no unique needs exist

Question 8

TYPE II Portland cement

Answer 8

Generates less heat and cures slower, good option for warm weather