| 1. |
_________________ is a mixture of cementitious or non-cementitious material, with or without aggregate, to which sufficient water or other fluid is added to produce a flowing consistency. |
|
|
Grout |
|
|
Lime |
| 2. |
The rapid development of rigidity in a freshly mixed grout without the evolution of much heat is known as a ________________. |
|
|
False Set |
|
|
True Set |
| 3. |
Circuit grouting is a grout that has an artificially induced cohesiveness, or the ability to retain the dispersed solid particles in suspension; i.e., a grout mixture that does not settle or bleed. |
|
|
True |
|
|
False |
| 4. |
_________________ is a clay composed principally of minerals of the montmorillonite group, characterized by high adsorption and very large volume change with wetting. |
|
|
Bentonite |
|
|
Aquitard |
| 5. |
A stratum or zone below the surface of the earth capable of producing water as from a well is called as a _________________. |
|
|
Aquiclude |
|
|
Aquifer |
| 6. |
Quantity of cement contained in a unit volume of grout, expressed as weight or volume is called Cement Factor. |
|
|
True |
|
|
False |
| 7. |
_________________ is defined as the heat generated by chemical reactions of cementitious materials with water, such as that evolved during the setting and hardening of portland cement. |
|
|
Heat of Hydration |
|
|
Final set |
| 8. |
A stage is one complete operational cycle of drilling, cleaning, pressure washing, pressure testing, pressure grouting, and grout cleanout within a zone |
|
|
True |
|
|
False |
| 9. |
_______________ is the rate of discharge of water under laminar flow conditions through a unit cross-sectional area of a porous medium under a unit hydraulic gradient and standard temperature conditions. |
|
|
Permeability |
|
|
Pressure |
| 10. |
Primary Porosity is the porosity that develops during final stages of sedimentation or that was present within the sedimentary particles at the time of deposition. |
|
|
True |
|
|
False |
| 11. |
________________ is the point during grout injection when little or no grout is accepted under the maximum allowable pressure or other specified conditions. |
|
|
Refusal |
|
|
Porosity |
| 12. |
_______________ is defined as the fracturing of an embankment or underground strata by pumping water under a pressure in excess of the tensile strength and minor principal stress. |
|
|
Hydro-fracturing |
|
|
Hydration |
| 13. |
Harmful or deleterious reactions between sulfates in soil or groundwater and grout is called Sulfate Attack. |
|
|
True |
|
|
False |
| 14. |
_______________ is the property of a material that enables it to stiffen in a short period, on standing, and to regain its initial viscosity by mechanical agitation. |
|
|
Thixotropy |
|
|
Tertiary |
| 15. |
_______________ is the ratio of the volume of void space to the volume of solid particles in a given soil ass. |
|
|
Void Ratio |
|
|
Unit Ratio |
| 16. |
Working pressure is the upper surface of a saturation zone, except where that surface is formed by an impermeable body. |
|
|
True |
|
|
False |
| 17. |
The term ______________ refers to the spatial relationships of rocks and their discontinuities and affects engineering projects in many ways. |
|
|
Rock structure |
|
|
Geology |
| 18. |
Faults are fractures along which masses of rock have been moved in a direction parallel to the fault surface. |
|
|
True |
|
|
False |
| 19. |
Any material other than water, fine aggregate, and hydraulic cement added to the grout immediately before or during its mixing to alter its chemical or physical properties to a desired characteristic during its fluid or plastic state is classified as an _________________. |
|
|
Admixture |
|
|
Fillers |
| 20. |
The quality of the groundwater is primarily due to the mineralogical character of the reservoir rocks and their degree of volubility in water. |
|
|
True |
|
|
False |
|
