Concrete Inspection Flashcards
6 cards from real FDOT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Concrete Inspection flashcards as text
According to FDOT specifications, what is the minimum compressive strength (f'c) required for Class I concrete?
Answer: 3,000 psi
FDOT Class I concrete requires a minimum compressive strength of 3,000 psi as specified in Standard Specifications Section 346.
What FDOT specification section governs portland cement concrete for structures?
Answer: Section 346
FDOT Section 346 covers portland cement concrete materials and mix design requirements for structural concrete.
When testing concrete slump on an FDOT project, how long after taking the sample must the test be completed?
Answer: 5 minutes
Per AASHTO T 119 referenced in FDOT specifications, the slump test must be completed within 5 minutes of obtaining the composite sample.
What is the maximum water-cementitious material (w/cm) ratio allowed for FDOT Class IV concrete?
Answer: 0.44
FDOT Class IV concrete, used in structures exposed to seawater, has a maximum w/cm ratio of 0.44 to ensure durability.
According to FDOT specifications, what minimum curing period is required for concrete structures using water curing?
Answer: 7 days
FDOT requires a minimum of 7 days of water curing for concrete structures to ensure adequate strength gain and durability.
Which FDOT test method is used to determine the air content of freshly mixed concrete by the pressure method?
Answer: FM 1-T 152
FM 1-T 152 is the FDOT Florida Method for determining air content of freshly mixed concrete using the pressure meter.