ACI Aggregate Testing Technician - Level 1 - Section 2

ACI Aggregate Testing Technician - Level 1 - Section 2 Unless the procedures recommended here are carried out precisely, a ____ sample can result. Nonrepresentative Generally speaking, small samples are most representative of the total supply. True or False? False; large samples are more representative There are some instances in which ____ between the test samples can't be avoided. Differences When reduction of the field sample before testing isn't recommended, the ____ field sample should be tested. Entire What determines whether large-size particles are equally distributed among test samples that have been reduced? Laws of chance Method A, the ____ method, must be used with fine, dry aggregate. Mechancal·splltter If Method B or C is to be used, ____ the sample. Moisten If Method A is to be used and the sample is wet, ____ the sample. Dry Method C, miniature stockpiling, cannot be used for ____ or mixtures of coarse and fine aggregate. Coarse aggregates Method ____ involves the use of chutes, holding receptacles, and hoppers or straightedge pans. A Sample splitters must have ____ equal width chutes for coarse aggregate and ____ for fine aggregate. 8, 12 The differences or variations in the procedures of Method B are based on the ____ of the floor surface. Evenness In Methods B and C the sample is shoveled into a ____ before it is flattened and divided. Conical pile In using the alternate procedure in Method B, the field sample may be placed on a(n) _____. Canvas blanket or tear-resistant tarp In quartering, retain two ____ quarters and reject the other two. Diagonally opposite