Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
Opc is made from |
Gypsum and Lime |
|
|
Most appropriate method to specify concrete mix prop |
grade of concrete not Nominal mix or design mix ratio |
|
|
Workability of concrete is improved by adding |
fly ash hydrated lime CaCl2 Bentonite ALL |
|
|
Fineness of cement affects only |
Early gain of strength |
|
|
Expansive cement expands mostly during its |
final hardening period |
|
|
Ferro cement |
1. Reinf meshing in cement mortar 2. 1:2.5 ratio of cement sand 3. 5 to 8 percent reinforcement |
|
|
Prestressing force is |
Compressive force |
|
|
Prestressing tendons :... |
1. Group wires ..horz spacing = 5mm more than MSA or 40mm whichever greater 2. Single wires.. 3x Dia of wire or 1.5x MSA whichever greater 3. Large wires.. same as 1 or Maxm size of cable or bar 4. Vertical spacing =50mm |
|
|
Lime pozolonna initial setting time |
120 minutes |
|
|
basic water depends on |
cement sand ratio |
|
|
preliminary test |
the test done in trial mix of concrete before use |
|
|
preliminary test |
the test done in trial mix of concrete before use |
