US510233A - Method of making concrete pavements - Google Patents

Description

(No Model.)

(1.11. 131111110011. METHOD 0E MAKING CONCRETE PAVEMENTS. No. 510,233.

Patented Dec. 5, 1893.l

FIG 2*.

buren tor. fr? 4. fai/fm@ i NITED STATES GEORGE A. BEDGOOD,

PATENT OFFICE.

METHOD OF MAKING CON-CRETE PAVEMENTS.

SPECIFICATION forming part of Letters Patent No. 510,233, dated December 5, 1893.

Application filed .T une 29, 1893. Serial No. 479,165. (No model.)

To aZZ whom/.it may concern:

Be it known that I, GEORGE A. BEDGooD, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvementsin Methods of' Making Concrete Pavements; and I do hereby declare the following to be a full, clear, and exact description of the invention.

ro My invention comprises a novel method of f constructing non freezing concrete pavements, sidewalks, roadways, &c., the princi` pal steps in this method being shown in the accompanying drawings, in whichi 5 Figure l is a cross section of an excavation within which the base of a pavement is to be laid. Fig. 2 is a similar section of' a complete pavement.

In order to illustrate my method of making zo pavements, I will suppose that a sidewalk is to be constructed, in which event the first step will be the digging of an excavation A,

of the same length and width as the pavement, and of any suitable depth. The dis- 2 5 tance the excavation is carried down will be determined by the nature of the ground, but need not exceed six or eight inches, unless the sidewalk is to be laid where frost penetrates a great way. After the'excavation is 3o made, its bottom is 4thoroughly saturated with oil, as indicated at B, crude petroleum being preferred on account of its cheapness, although the invention is not limited in this respect. The oil is poured into the trench without preparing t-he latter in any manner, so as to preserve a natural foundation for the pavement, which base cannot be injured by frost. The next step consists in filling the trench or excavation almost full of a con- 4o crete or grouting O, prepared as follows: I-

has hardened, I ram it very thoroughly, so as to produce an even, upper surface, which ramming causes some oil to lwork up through the interstices of said filling. The concrete 5o O is now covered with a finishing layer of cement 'mixed with the above-described brine, which last coatD may be two or three inches thick. Portland cement is generally used for this finishing coat, and when it is dried, the pavement is saturated with as much crude petroleum as it will absorb. This act completes the method of construction, and af'- fords a safe pavement to walk upon, as the final coat of oil prevents frost and ice form- 6o ing on the wearing surface D, and rendering it slippery.

The first or lower coat of oil B performs an important part in preservingthe pavement, as it renders it impossible for frost to penetrate the base of the structure.

In preparing roadways for heavy traffic, the excavation A may be two or three feet deep, and the filling rammed therein may be made of rubble instead of gravel.` Finally,4 the 7o .cement coating D may be mixed with a coloring medium, so as to add to the finished appearance of the pavement.

I claim as my invention--V l. The Within-described ymethod of laying pavements &c., which method consists in making an excavation in the ground, then saturating the bottom of said excavation Vwith oil, and finally packing said excavation with a concrete filling, for the purpose stated. 8o

2. The Within-described method ot laying pavements o., which method consists in making an excavation in the ground, then saturating the bottom of said excavation with oil, then packing said excavation with a con- 85 crete iilling, then covering this filling with a cement coat, and finally saturating said coat with oil, for the purpose stated.

In testimony whereof I aiix my signature in presence of two witnesses.

GEORGE A. BEDGOOD. Witnesses:

JAMES H. LAYMAN, HENRY VARwIe.

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