US2313199A - Road surface, road foundation, and similar layers - Google Patents

Road surface, road foundation, and similar layers Download PDF

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Publication number
US2313199A
US2313199A US28160339A US2313199A US 2313199 A US2313199 A US 2313199A US 28160339 A US28160339 A US 28160339A US 2313199 A US2313199 A US 2313199A
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United States
Prior art keywords
road
slag
foundation
similar layers
sludge
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Geldolph A Heyning
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Individual
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/08—Slag cements
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • Blast furnace slag has already been employed in the construction of roads and paths, for instance in the form of blocks for footways, or of irregular lumps for road foundations, or of granules for cycling-tracks. Owing to its strength and its valuable wearing properties, said material is very suitable for the purpose stated. However, when employed on road. surfaces exposed to the direct action of sun rays, its coherence dimin ishes in the long run, so that it is liable to crumble and to drift. It has already been proposed to avoid this inconvenience by the addition to the surfacing material of cement or milk of lime as a binder, but this appreciably increases the cost of construction.
  • the present invention has for its object to attain the desired result in a more economical manner, namely by the addition, to the blast furnace slag, of a material that has always been considered as a mere waste product of the blast furnace process.
  • This material is the so-called blast furnace sludge, i. e. the exceedingly fine dust washed from blast furnace gas that has already been treated in dry dust separators.
  • Another advantageous feature of the invention is that it does not offer any difiiculty to mix slag and sludge to form a homogenous mass, and that the mixing operation need not be performed in situ, but can be carried out where said ingredients are produced, since the mixture only hardens or sets under the influence of pressure exerted, for instance, by rollers.
  • the invention is not restricted thereto, since also relatively big lumps are suitable for the purpose under review, for
  • the mixture of slag and sludge may be pressed into blocks, the latter to be used in the construction of road foundations, or as roadsurfacing material.
  • Suitable fillers such as stone-chipping, ravel, sand and the like may be incorporated in the mixture of slag and sludge for the purposes of

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Road Paving Structures (AREA)

Description

Patented Mar. 9, 1943 1 OFFICE ROAD SURFACE, ROAD FOUNDATION, AND SIMILAR LAYERS Geldolph A. Heyning, Velsen,
Netherlands; vested in the Alien Property Custodian No Drawing. Application June 28, 1939, Serial No. 281,603. In the Netherlands June 3, 1937 2 Claims.
Blast furnace slag has already been employed in the construction of roads and paths, for instance in the form of blocks for footways, or of irregular lumps for road foundations, or of granules for cycling-tracks. Owing to its strength and its valuable wearing properties, said material is very suitable for the purpose stated. However, when employed on road. surfaces exposed to the direct action of sun rays, its coherence dimin ishes in the long run, so that it is liable to crumble and to drift. It has already been proposed to avoid this inconvenience by the addition to the surfacing material of cement or milk of lime as a binder, but this appreciably increases the cost of construction.
The present invention has for its object to attain the desired result in a more economical manner, namely by the addition, to the blast furnace slag, of a material that has always been considered as a mere waste product of the blast furnace process. This material is the so-called blast furnace sludge, i. e. the exceedingly fine dust washed from blast furnace gas that has already been treated in dry dust separators.
It has been found in practice that a mixture of suitable proportions of slag and sludge, for instance four parts by volume of slag to onepart by volume of sludge, is a very valuable road surfacing material. The sludge not only prevents the granulated slag from dehydration so as to ensure permanent coherency of the surface, but also has the effect of progressively increasing its strength.
It has already been suggested for dust from the throat of a blast furnace to be briquetted by the addition thereto of a binder such as blast furnace slag, for the purpose of rendering said dust suitable for smelting, but the present invention is not concerned therewith.
Another advantageous feature of the invention is that it does not offer any difiiculty to mix slag and sludge to form a homogenous mass, and that the mixing operation need not be performed in situ, but can be carried out where said ingredients are produced, since the mixture only hardens or sets under the influence of pressure exerted, for instance, by rollers.
Although it is preferred for the slag to be used in granulated form, the invention is not restricted thereto, since also relatively big lumps are suitable for the purpose under review, for
instance, for the making of road foundations.
Alternatively, the mixture of slag and sludge may be pressed into blocks, the latter to be used in the construction of road foundations, or as roadsurfacing material.
Suitable fillers such as stone-chipping, ravel, sand and the like may be incorporated in the mixture of slag and sludge for the purposes of
US28160339 1937-06-03 1939-06-28 Road surface, road foundation, and similar layers Expired - Lifetime US2313199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2313199X 1937-06-03

Publications (1)

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US2313199A true US2313199A (en) 1943-03-09

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ID=19874069

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US28160339 Expired - Lifetime US2313199A (en) 1937-06-03 1939-06-28 Road surface, road foundation, and similar layers

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668121A (en) * 1985-09-16 1987-05-26 Bosich Joseph F Process of making material for and constructing a road
US4793729A (en) * 1985-09-16 1988-12-27 Bosich Joseph F Process of making material for and constructing a road

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668121A (en) * 1985-09-16 1987-05-26 Bosich Joseph F Process of making material for and constructing a road
US4793729A (en) * 1985-09-16 1988-12-27 Bosich Joseph F Process of making material for and constructing a road

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