BFRL Publications - workability field test
workability field test
Modified Slump Test to Measure Rheological Parameters of Fresh Concrete.
Cement,Concrete, and Aggregates, Vol. 20, No. 2, 241-247, December 1998.
Ferraris, C. F.; deLarrard, F.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899