lab results

Learning Goal: I’m working on a civil engineering report and need an explanation and answer to help me learn.

i need you to do the lab results only .

Concrete lab 6

Insert coarse aggregate , fine aggregate, most water, cement – mix 3 min -cover wait 3 min

Room temp = 23 C

Room humidity =62%

Temp fresh mix = 76 F

>Insert thermometer 3” in mix , cover and wait 2 min

Cast 3 layers

Rod 25 times per layer

Only tamp 25 times

Strike surface and clean plate

Slump = 1”


Mass empty bowl = 8.92 lb

Fill air content measuring bowl in 3 layers

Each layer 25 of rodding and 10-15 times mallet side

Mass of mix and bowl = 44.54 lb

Volume bowl = 0.25 ft^3

Top has air disconnect from bottom concrete

Saturate layer between

See how much air goes to concrete and measure air lost on top

Air content = 3.5%

Throw out used concrete from air content

Cast cylinder

Cylinder diameter 4”

8” height

Fill in layers , each rod 25 times and side tamp 10-15 times

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