Which of the following statements are true
1
Tests on cement paste to determine initial and final setting times are done at normal consistency condition.
2
Low heat cement has a Low percentage of tri-calcium aluminate.
3
High early strength Portland cement contains a larger percentage of tri-calcium silicate and a lower percentage of di-calcium silicate.
4
High early strength Portland cement contains a larger percentage of di-calcium silicate and a lower percentage of tri-calcium silicate.