Flashcards in this deck (26)

• The primary purpose of a slump test is to meet which of the following concrete quality requirements? a. Durability b. Surface Quality c. Strength d. Workability
  concrete testing quality
• Consolidation is defined as the process of reducing the volume of entrapped air in a fresh cementitious mixture. Which of the following mechanical inputs does not contribute to consolidation? a. Boning b. Compaction c. Rodding d. Tamping e. Vibration
  concrete consolidation mechanics
• What type of portland cement is employed in the construction of massive concrete structures such as gravity dams? a. Type I: Normal b. Type III: High Early Strength c. Type V: Sulfate Resistant d. Type II: Moderate e. Type IV: Low Heat
  cement types construction
• Concrete left in its natural state after formwork is removed, especially when the concrete surface reflects the texture, joints, and fasteners of a board form is called Architectural concrete or Beton brut.
  concrete finishes architecture
• Concrete that is poured in its final location is known as Cast-in-place concrete.
  concrete construction methods
• With regards to concrete proportioning, which of the following characteristics is of utmost concern if mass concrete is produced? a. Consistency b. Durability c. Heat Generation d. Placeability e. Strength
  concrete proportioning mass
• A steel strand used for prestressing a concrete member is called a Tendon.
  concrete prestressing materials
• Stirrups are placed in concrete beam reinforcement to resist Shear forces.
  concrete reinforcement stirrups
• The correct proportioning of ingredients for the mixture of concrete is done by Weight.
  concrete mixing proportioning
• A steel reinforcing bar that projects from a foundation to tie it to a column or wall is known as a Dowel.
  concrete reinforcement connections
• A vertical loop of steel bar used to reinforce a concrete beam against diagonal tension forces is called a Stirrup.
  concrete reinforcement tension
• Manufacturing cement involves a process starting from raw materials and ending as fine powder. This intermediate material is known as Clinker.
  cement manufacturing materials
• The inherent strength of concrete depends on the quality of its Cement, Aggregate, Admixture, and Water.
  concrete strength quality
• The comparative strength of concrete is primarily dependent on the amount of cement in the mix and the water-cement ratio. More cement than water in the mix produces stronger concrete.
  concrete strength ratios
• What is the purpose of concrete curing? a. To avoid concrete segregation b. To ensure consolidation of concrete c. To allow a time period for removing formworks d. To slow the loss of moisture in concrete
  concrete curing process
• A stiff straightedge of wood or metal that establishes the level the surface to which concrete will be placed is called a Screed.
  concrete tools leveling
• Inserting temporary supports under concrete beams and slabs after the formwork has been removed is known as Shoring.
  concrete support construction
• Which of the following is not a one-way sitecast concrete framing system? a. Ribbed slab b. Solid slab with slab bands c. Wide-module joist system d. Flat plate
  concrete framing systems
• Concrete that is exposed as an interior or exterior surface is known as exposed concrete.
  concrete finishes surfaces
• In concrete terminology, an agent is a general term for a material that may be used as an addition to cement or as an admixture in concrete.
  concrete terminology materials
• Form oil is an example of a bonding agent, curing agent, release agent, surface-active agent, or wetting agent.
  concrete agents materials
• Among the following, vermiculite is a lightweight aggregate.
  concrete aggregates materials
• If concrete pouring is stopped, a retarding admixture is used to address the problem.
  concrete admixtures pouring
• The desired properties of hardened concrete include appearance, durability, strength, and workability, except one.
  concrete properties hardened
• Which of the following is not a two-way sitecast concrete framing system? Ribbed slab, flat plate, flat slab, or waffle slab.
  concrete framing systems
• Voids left in concrete due to failure of the mortar to fill the spaces among coarse-aggregate particles are called bug holes, entrained air, efflorescence, honeycomb, or laitance.
  concrete voids defects