The sand used for concrete and mortar, for example, contains up to 4% iron, while Portland cement contains between 2 to 5% iron.
(The sand; used; for concrete and mortar) (The sand used for concrete and mortar; contains; up to 4% iron; T:while Portland cement contains between 2 to 5% iron) (Portland cement; contains; between 2 to 5% iron)
The sand The sand used for concrete and mortar Portland cement
used contains contains
for concrete and mortar
up to 4% iron T:while Portland cement contains between 2 to 5% iron
between 2 to 5% iron