UNITED STATES DEPARTMENT OF AGRICULTURE 
“Contribution from Office of Public Roadsand Rural ae np ee 
LOGAN WALLER PAGE, Director. 
Washington, D. C. PROFESSIONAL PAPER February 28, 1918 
PROGRESS REPORTS OF EXPERIMENTS IN DUST 
PREVENTION AND ROAD PRESERVATION, 1916. 
CONTENTS. 
Page 
Wiity LOSS DTTC es aoe See Cote PR DE HES CUDC Ee SECC S Joe e EE RR SEER COS ES Ge CED rne DES a nenes Src Sar moe 2 
Russell Road, Alexandria County, Va. (bituminous macadam and bituminous gravel)-......... 2 
Alexandria-Accotink Road, Fairfax County, Va. (bituminous gravel, earth-oil asphait).......- 15 
Gum Spring-Mount Vernon Road, Fairfax County, Va. (bituminous surface treatment on new 
gravel road) -..-.- eS OCC O IC SAREE ROSE COS SCC SRS CE Ede CEE eter Ae. BeRE Hee aE ners 20 
Woexis eos, oad, 1916—Corrugated Metal'Culverts..... 22-22-22 - Sesccts ccecceosecss cceee ee 27 
Supplementary Reports on Experiments Previously Reported................--.------+-------+---- 30 
Mount Vernon Avenue Road, Alexandria County, Va., 1915 (bituminous macadam, bituminous 
RUGS peocaeiedese get oes AS ae Ane AAA SA ROSA CER ECe RR aerial Srmsm pees plat Seis deca 31 
Falls Road, Montgomery County, Md., 1915 (bituminous surface treatment)...................- 37 
Bradley Lane, Montgomery County, Md., 1915 (bituminous macadam)........-..............-. 40 
Nyachinp tony 1C 11915; (bIuuminous|concrele)2. 2c esc eee eco cctesa ees cceetcccietee lec eseee eee 42 
BHenavistasla.-91915 (oil asphalt-coralline rock) 4:2 32 5.24: ssaockesee-be been as es oes Fees 42 
Jupiter, Palm Beach County, Fla., 1915 (oil asphalt-sand)..............----------------+-------- 42 
West Palm Beach, Fla., 1915 (bituminous sand, oil-limestone mixing methods)..............-- 43 
Ocatawwiae1 Oly) (Sand-asphalt) ss sbi bese: s baie bearer ai. 202 See ee ese rare oe uaa 44 
Lemon City, Fla., 1914 (oils, tar preparation, calcium chloride-coralline rock).................- 44 
West Palm Beach, Fla., 1914 (oil, tar, oil asphalt-coralline rock)........................-------- 45 
Miarseet tol (Ol-Coralling Tock): = 5222~ Se aten dace ese te se aces caee ae 2b Let ees sese nn se eee 46 
Rockville Pike, Montgomery County, Md., 1913 (bituminous surface treatment)..............-- 49 
Washington, D. C., 1912 (tar preparation and oil surface treatment).......................--.-- 52 
Chevy Chase, Montgomery County, Md., 1912 (bituminous concrete, cement concrete, oil cement 
concrete, vitrified brick, bituminous surface treatment on concrete)...............-.--------- 55 
Chevy Chase, Montgomery County, Md., 1911 (bituminous construction and surface treatment) - 59 
Jamaica, N. Y., 1911 (oil cement concrete, oil asphalt, tar and fluxed native asphalt)........... 62 
Peiesmow ll GLO (OMMasphalt Gravel) s <= 22 cae oce ae a eae oe See ae sae ao Some ae 67 
Mrpxyiles)onm 1910 (tar and oll preparations)... 2. .2.-/2s22.--cstec-+secccers--2esees see eeee. 69 
Youngstown, Ohio, 1910 (slag, lime, waste sulphite liquor, and tar)....-.-...--............-.-- 71 
Dodge City, Garden City, Bucklin, and Ford, Kans., 1908 (sand-clay)..............-....-.----- 75 
sBowune Green, Ky, 1907 (Kentucky rock asphalt) 25: 25. s2c2c ec ccencccecscceccce ct csssssteee 76 
During the year 1916 the Office of Public Roads and Rural Engi- 
neering undertook three new experimental highway projects and a 
separate investigation of corrugated metal pipe for use in constructing 
highway culverts. All of the highway projects involved the use of 
bituminous materials. The principal purpose of the new road 
experiments has been to develop the most advantageous methods 
of using gravel with bituminous materials in constructing the better 
4588°—18—Bull. 586—1 
