Asphalt Paving Inspection Flashcards
6 cards from real CTQP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Asphalt Paving Inspection flashcards as text
What instrument is used to measure the thickness of an asphalt core sample in the field?
Answer: Digital caliper
A digital or vernier caliper is used to measure the thickness of asphalt core samples taken from the compacted mat to verify thickness compliance.
What is 'ride quality' or 'smoothness' measured with on FDOT asphalt projects?
Answer: An inertial profiler or profilograph
Inertial profilers or profilographs are used to measure pavement smoothness and produce an International Roughness Index (IRI) or Profile Index (PI) value.
What is the maximum allowable deviation from design elevation for a finished asphalt surface per typical FDOT specifications?
Answer: 1/4 inch
FDOT typically allows a maximum deviation of ±1/4 inch from design grade for finished asphalt pavement surfaces.
What does 'joint density' refer to in asphalt paving?
Answer: The density of the asphalt at longitudinal or transverse construction joints
Joint density refers to the compacted density achieved at longitudinal or transverse construction joints, which are typically the weakest areas of a pavement mat.
What is a 'string line' used for during asphalt paving operations?
Answer: Controlling the elevation and alignment of the paver screed
A string line or wire reference is used to guide the paver's automatic grade and slope controls, ensuring the finished mat meets design elevation and cross-slope requirements.
What condition requires the inspector to stop paving operations immediately?
Answer: Ambient temperature drops below 50°F during paving
FDOT specifications prohibit paving when the ambient temperature is below 50°F (or the pavement surface temperature is below 50°F) because cold temperatures prevent adequate compaction.