DETAILED TABLE OF CONTENTS. 



METHODS OF TESTING. Page. 



French coefficient of wear of rock or slag 27 



Toughness of rock 27 



Weight per cubic foot of broken slag 28 



Size, grading or mechanical analysis of broken stone, broken slag, or gravel 28 



Elutriation test of sand 30 



Mechanical analysis or grading of sand or fine aggregate 30 



Washing test and grading or mechanical analysis of road gravel 31 



Cementing value of gravel, sand clay, or topsoil 31 



Washing test and grading or mechanical analysis of sand clay or topsoil 33 



Tests for Portland cement 33 



Mortar tensile strength test for sand - 33 



Battler test for paving brick ^ 34 



SAMPLES AND SAMPLING. 



General directions 35 



Information accompanying samples 35 



Time and plant of sampling 35 



Broken stone ; 35 



Broken slag 36 



Gravel 36 



Sand 37 



Mineral filler 37 



Total mineral aggregate 37 



Sand clay or topsoil 37 



Portland cement , 37 



Paving brick 38 



Stone block ■ 38 



SPECIFICATIONS. 



RW-1. Broken stone for water-bound macadam 4 



R W-2. Broken stone for water-bound base 5 



RS-l. Coarse broken stone for bituminous surface treatment 5 



R S-2. Fine broken stone or gravel for bituminous siurface treatment 6 



RB-1. Broken stone for bituminous macadam 6 



RB-2. Broken stone for bituminous macadam wearing surface 7 



RBC-1. Broken stone for one size stone bituminous concrete •. 8 



RBC-2. Broken stone, sand, and filler for coarse aggregate bituminous concrete wearing course . 9 



RBC^3. Broken stone, sand, and filler for fine aggregate bituminous concrete wearing course 10 



RBC-4. Broken stone, sand, and filler for binder course and sheet asphalt wearing course 11 



RC-1. Broken stone and sand for one course Portland cement concrete pavement 13 



RC-2, Broken stone or gravel, and sand for Portland cement concre'te base 14 



GW-1. Gravel for water-bound gravel road 16 



GBC-2. Gravel, sand, and filler for coarse aggregate bituminous concrete wearing course 17 



SgW-2. Slag for water-bound base , 18 



Sd-1. Natural sand clay or topsoil mixture for road surfacing 19 



Ct-1. Portland cement 20 



Br-1. Vitrified paving brick, cushion sand, and grouting sand for brick pavement , 21 



Br-2. Vitrified paving brick, cushion sand, and grouting sand for brick pavement 23 



R-1. Granite block, graval and sand for stone block pavement 25 



39 



