USRE7997E - Improvement in concrete pavements - Google Patents
Improvement in concrete pavements Download PDFInfo
- Publication number
- USRE7997E USRE7997E US RE7997 E USRE7997 E US RE7997E
- Authority
- US
- United States
- Prior art keywords
- asphalt
- rock
- concrete
- improvement
- tar
- Prior art date
Links
- 239000004567 concrete Substances 0.000 title description 24
- 239000010426 asphalt Substances 0.000 description 28
- 239000011435 rock Substances 0.000 description 22
- 239000011279 mineral tar Substances 0.000 description 16
- 235000019738 Limestone Nutrition 0.000 description 6
- 239000006028 limestone Substances 0.000 description 6
- 229940108066 Coal Tar Drugs 0.000 description 4
- 210000003660 Reticulum Anatomy 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000011280 coal tar Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 229940068124 Pine tar Drugs 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000266 injurious Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011297 pine tar Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229920000638 styrene acrylonitrile Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
Definitions
- Said invention consists, partially, in a pavstances combined with mineral tar and with posed-of concrete embodying earthy bitumirock is hot, and molded under heavy pressure.
- err-Ann is in. Wi-Irrm, TRUSTEE.
- the asphalt of California employed in developing this invention, contains a much usual asphalts of conunerce.
- the asphalt is heated sufiiciently to work it down into a granular mass, and to discharge therefrom the gases and watery vapors.
- the mineral tar is "The previous state of the art. in concrete pavements embraces concretes of asphalt or coal tar, interchangeably employed, andbroken limestone, boiled together and laid in mass, and also formed into flags and blocks, by pouring the same into molds and allowing itto cool, after the manner of casting.
- each particle becomes a prompt absorbentof I the bitumen, and as the mass cools a'practi stone-is cally-perfect union of the asphalt and that the concrete subject of these Letters Pat,
- the calcareous rock is crushed and granulated, preferably, so that all of it will pass through a q'uarter-inch-mesh screen, and such crushing insures a proper proportion'of dust and fine particles.
- the mixing of the vconcrete is efl'ected by means of heated revolving cylinders, preferably provided with interior horizontal rods, or other appliances for tumbling the mass;
- the blocks are best molded under the origi nal heat of the concrete; but it can be done with reheating.
- Paving-concrete containing asphalt, mineral tar, and. granulated calcareous mck, pre viously heated, and; mixed. with the asphalt W113; dthe rock 'is hot, substantially as 1esen 11 may be produced by increasing or 4 reducing the pro'portionof granulatede teining asphalt, mineral tar, an
Description
5T0 all whom it may concern HBONNET" BONNET, of the city and county of San Francisco, in the Stateof California, have fy-invented certain new and useful Improvements in Concrete Pavements; and that the follow- .'--ing specification is a true, clear, and complete '-'=description thereof.
Said invention consists, partially, in a pavstances combined with mineral tar and with posed-of concrete embodying earthy bitumirock is hot, and molded under heavy pressure.
. greater proportion of earthy .rnatter than the employed for properly tempering the asphalt.
' and mineral tar.
err-Ann is in. Wi-Irrm, TRUSTEE.
Iran STATES Pirrnn'r OFF-ICE.
' .eonnii'r "SKINNER m) onner BONNET,'OF SAN FRANCISCO, CALIFORNIA,
nssicnons nr MESNE ASSIGNMENTS, T0 JAMES n.
:M PRO-VEM ENT, m CONCRETE AVEM EKIINTS.
Specification forming part of Letters Patent No. 105,502, dated uly 19, 1 870; Reissue No.. 7,99 7", dated 'Decembcr 18, 1877 applicationfiledNovember 26, 1877.
Be it 'known that we, ROBERT SKINNER- and.
lug-concrete embodying earthy bitlllllillOllS subcalcarcous rock while the latter is thoroughly heated;- and, further, in paving-blocks comnous substances combined with mineral tar and heated calcareous rock, mixed while the The asphalt of California, employed in developing this invention, contains a much usual asphalts of conunerce. The asphalt is heated sufiiciently to work it down into a granular mass, and to discharge therefrom the gases and watery vapors. The mineral tar is "The previous state of the art. in concrete pavements embraces concretes of asphalt or coal tar, interchangeably employed, andbroken limestone, boiled together and laid in mass, and also formed into flags and blocks, by pouring the same into molds and allowing itto cool, after the manner of casting.
Ooncretcs of coal-tar, pine-tar, sand, gravel, and broken stone mixed, and molded into locks under pressure, are also well known. In the preparation of these previous concretes it has been'customa-ry to employ fire-heat for drying the broken rock, sand, and earthy matter, and, although this drying process is essential, it is not enough in accordance with this invention that the calcareous rock be 'well dried; but it fuust be well heated prior to and at the time of compounding it with the asphalt While thus well heated the rocky particles, coarse and fine, are more or less expanded, and the air is largely driven therefrom, so that when in that condition they are mixed with the asphalt and mineral tar, I
attained. I
It'is, therefore, to be distinctly understood- Drvrsiou B.
each particle becomes a prompt absorbentof I the bitumen, and as the mass cools a'practi stone-is cally-perfect union of the asphalt and that the concrete subject of these Letters Pat,
cut is limited not only to a composition con Under no circumstances can the calcareous rock, however dry, be mixed while cold with the. hot asphalt, and good results secured, either as regards absorption by the rockyp'articles or satisfactory working in molds, be cause the degree of heat requisite for properly treating the rock would be positively injurious to the asphalt. Moreover, the-heat contained in the granulated rock secures good r.:-..-;ults while molding the blocks under heavy pressure in hydraulic or, other presses.
Great care should be taken not to burn the limestone in heating it, because quicklime in asphalt-concretes. is, for many reasons, positively objectionable.
The calcareous rockis crushed and granulated, preferably, so that all of it will pass through a q'uarter-inch-mesh screen, and such crushing insures a proper proportion'of dust and fine particles. I
The mixing of the vconcrete is efl'ected by means of heated revolving cylinders, preferably provided with interior horizontal rods, or other appliances for tumbling the mass;
The blocks are best molded under the origi nal heat of the concrete; but it can be done with reheating.
, Eight hundred pounds of California asphalt, twenty gallons of mineral tar, and three hundred pounds of granulated and powdered ca1- careous rock, compounded with three hundred poundsof slag and three hundred-pounds of coke, granulated andheated in like manner as the limestone, constitutes a concrete suitable for molding under pressure for the manufac- NUTTMAN, AND
indurntio rooms roek.- v
What is claimed as new; and to be secured by .these Letters Patent, ie-
.1. Paving-concrete containing asphalt, mineral tar, and. granulated calcareous mck, pre viously heated, and; mixed. with the asphalt W113; dthe rock 'is hot, substantially as 1esen 11 may be produced by increasing or 4 reducing the pro'portionof granulatede teining asphalt, mineral tar, an
calcareous rock, mixeg1- after the rock has been L I well heated and-while hot, substantially as dei ROBERT SKINNER- 2. Compressed 'eonerete pevin Mocks congranulated scribed.
' B. BONNET. Witnesses:
S. M. Tamar,
n. H. Tmuun
Family
ID=
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US109669A (en) | Improvement in the manufacture of artificial stone | |
US8545748B2 (en) | Building bricks including plastics | |
KR102505258B1 (en) | Construction material manufacturing method by capturing carbon dioxide using calcium carbonate generated from steelmaking slag | |
Mills | Materials of construction: Their manufacture and properties | |
US1666936A (en) | Process of manufacturing ceramic products | |
USRE7997E (en) | Improvement in concrete pavements | |
CN113336477B (en) | Self-compaction asphalt mixture | |
JPH03215373A (en) | Production of inorganic porous material | |
US2729570A (en) | Lightweight aggregates and method of making same from clay residues | |
US1727231A (en) | Asphalt paving composition | |
US748019A (en) | Manufacture of artificial asphalt, stone, &c. | |
US1505880A (en) | Pavement composition | |
US1235989A (en) | Plastic surfacing material and the process of producing same. | |
US831296A (en) | Manufacture of artificial stone. | |
NL2028820B1 (en) | A process for the preparation of an asphalt composition. | |
RU2572129C1 (en) | Method to produce modifying additive for hot asphalt-concrete mixtures | |
US903062A (en) | Manufacture of bricks, shaped stones, or blocks, tubes, tiles, and the like. | |
JP2001261425A (en) | Sulfur composition molding raw material and its manufacturing method | |
US283329A (en) | Paving-block | |
USRE16750E (en) | Stephen j | |
RU2160237C1 (en) | Method of asphalt concrete regeneration | |
US1445240A (en) | Process and composition for making roadways | |
KR20010078853A (en) | Isocyanate(resin) fever analysis composition concrete recovery materal of manufacture composition technique | |
US1320672A (en) | Process of making paving compositions and products | |
US205253A (en) | Improvement in the manufacture of hydraulic cement |