1. The material used for UHPC provides compressive strengths up to __________
a) 17000 psi
b) 20000 psi
c) 25000 psi
d) 29000 psi
Explanation: The material provides compressive strengths of up to 29000 pounds per square inch.
2. The material used for UHPC provides flexural strengths up to _________
a) 2000 psi
b) 5000 psi
c) 7000 psi
d) 10000 psi
Explanation: The material used for UHPC provides flexural strengths up to 7000 pounds per square inch.
3. Range of modulus of elasticity for UHPC ___________
a) 30-35 GPa
b) 35-40 GPa
c) 40-45 GPa
d) 45-50 GPa
Explanation: 45-50 GPa or 6500 to 7300 ksi is the range of modulus of elasticity for ultra-high performance concrete.
4. What is the compressive strength for UHPC?
a) 10-20 MPa
b) 60-100 MPa
c) 100-150 MPa
d) >150 MPa
Explanation: 28 days compressive strength for UHPC is 100-150MPa and for HPC, it’s 60-100 MPa.
5. What is the percentage of water by weight in UHPC?
a) 28.5
b) 4.4
c) 1.2
d) 6.2
Explanation: 4.4 is the percentage of water by weight in UHPC according to the typical composition of Ductal.
6. What is the percentage of PC by weight in UHPC?
a) 28.5
b) 4.4
c) 1.2
d) 6.2
Explanation: 28.5 is the percentage of PC by weight in UHPC according to the typical composition of Ductal.
7. What is the percentage of steel fibre by weight in UHPC?
a) 28.5
b) 4.4
c) 1.2
d) 6.2
Explanation: 6.5 is the percentage of steel fibre by weight in UHPC according to the typical composition of Ductal.
8. What is the percentage of the accelerator by weight in UHPC?
a) 28.5
b) 4.4
c) 1.2
d) 6.2
Explanation: 1.2 is the percentage of the accelerator by weight in UHPC according to typical composition of Ductal.
9. Clay minerals are found in most _________
a) Igneous Environment
b) Sedimentary environment
c) Metamorphic environment
d) In all environment
Explanation: Clay minerals are common in sedimentary formations and seismic measurements are our main tools for studying sub-surface lithology.
10. Theoretical value for bulk modulus of clay __________
a) 20 and 50 GPa
b) 30 and 40 GPa
c) 100-150 GPa
d) 200 GPa
Explanation: Theoretical value for bulk modulus of clay are reported between 20 and 50 GPa.