摘要:
A method produces a composite material using a mixing system. The composite material comprises at least one aggregate, e.g. rock and/or glass, and the reaction product of a two-component polymeric binder composition comprising a first component, e.g. an isocyanate component, and a second component, e.g. an isocyanate-reactive component. The mixing system includes a mixing apparatus. The method includes the step of providing the aggregate, the first component and the second component into the mixing apparatus. The method further includes the step of mixing the first and second components to produce the reaction product of the two-component polymeric binder composition, and the step of applying the reaction product of the two-component polymeric binder composition to the aggregate within the mixing apparatus to produce the composite material. The composite material can be used for forming a paved structure, such as a sidewalk or a roadway.
摘要:
A process method for producing modified asphalt binder compositions that involves mixing an asphalt binder and at least one asphalt additive and/or asphalt modifier in a stirred ball mill so as to subject the mixture to mixing, shearing, impacting and grinding.
摘要:
A method produces a composite material using a mixing system. The composite material comprises at least one aggregate, e.g. rock and/or glass, and the reaction product of a two-component polymeric binder composition comprising a first component, e.g. an isocyanate component, and a second component, e.g. an isocyanate-reactive component. The mixing system includes a mixing apparatus. The method includes the step of providing the aggregate, the first component and the second component into the mixing apparatus. The method further includes the step of mixing the first and second components to produce the reaction product of the two-component polymeric binder composition, and the step of applying the reaction product of the two-component polymeric binder composition to the aggregate within the mixing apparatus to produce the composite material. The composite material can be used for forming a paved structure, such as a sidewalk or a roadway.
摘要:
Bitumen or asphalt for producing a road topping, whereby the bitumen or asphalt contains a proportion of paraffin obtained by Fischer-Tropsch synthesis (FT paraffin). A road topping with the bitumen and a method for producing a corresponding road topping or roadway covering using the bitumen.
摘要:
The invention relates to bitumen or asphalt for producing a road topping, whereby said bitumen or asphalt contains a proportion of paraffin obtained by Fischer-Tropsch synthesis (FT paraffin). The invention also relates to a road topping with said bitumen and to a method for producing a corresponding road topping or roadway/covering using said bitumen.
摘要:
An asphalt paver having a remixing conveyor system that is adapted to substantially or entirely eliminating segregation in hot mix asphalt material delivered to the asphalt paver. The remixing conveying system includes at least one pair of parallelly spaced, oppositely pitched, counter-rotating hydraulically driven feed augers having remixing blades that intermittently displace portions of the hot mix asphalt material generally transversely to the direction that the feed augers convey the hot mix asphalt material from a hopper of the asphalt paver to spreading augers near the rear of the machine. Elongate members over the feed augers provide protection from impact forces and overloading and enhancing lateral extraction of hot mix asphalt material from the hopper. An optional feed screen provides flow control of the hot mix asphalt material in the hopper. A kit is provided for converting existing asphalt paving machines to have desegregating capability. A method is provided for substantially or entirely eliminating segregation in hot mix asphalt material delivered to an asphalt paver.
摘要:
An improved sulfur-extended asphalt composition and method for use in making compacted bituminous concrete, whereby solid sulfur, preferably in powdered form, is added to liquid asphalt on substantially a 1:1 weight basis, the asphalt comprising less than 3.1% of the weight of the total bituminous concrete mixture. The solid sulfur is melted by the heat present in the molten asphalt thereby lessening the overall energy consumption and eliminating the need for any liquid sulfur-related heating equipment. The overall binder content of the resultant bituminous concrete is varied so as to both maintain the 1:1 sulfur-replacement-of-asphalt relationship utilized with this invention, and to reduce the occurrence of air voids. Such a 1:1 replacement relationship provides economic efficiencies in bituminous concrete production not previously obtainable. The resultant sulfur-extended bituminous concrete when compacted provides substantially increased mechanical strengths over conventional asphalt mix designs. A solid sulfur mixing and blending apparatus is disclosed for use with asphalt batch plants to accommodate the present sulfur-extended asphalt composition and method.
摘要:
A method and apparatus for manufacturing a coating mass for road constructions are disclosed wherein stone minerals of different grain size ranges are dosed, dried, heated, dusted off and supplemented with a binding agent and other flux materials. The stone minerals of the various grain size ranges are separated from each other and are predosed, dried and heated. This divides the stone minerals of each grain size range into a stone fraction and a respectively absorbed fine grain size material, which is divided into a sand fraction and a self filler fraction by means of filtering. The sand fraction is thereafter added again to the stone fraction of the respective grain size range, and the self filler fractions of all grain size ranges are combined and weighted. All of the heated stone and sand fractions are also weighted and combined and are mixed together with the combined and weighted self filler fractions and the binding agent in order to provide the coating mass.
摘要:
A bituminous concrete mixing and applying apparatus is disclosed which is constructed in an entirely self-contained and mobile fashion whereby bituminous concrete can be mixed and applied at the job site. The apparatus comprises an elongated mobile frame, such as a truck frame, upon which storage compartments are disposed for separately storing aggregates such as sand, stone, gravel, and the like, as well as liquid bitumens, such as asphalt, tar, or the like. A conveyor means is provided beneath the storage compartments for the aggregates for conveying such aggregates out from the storage compartment through a metering device and into a heating and drying mechanism whereat the aggregates are heated, dried and agitated. The dry aggregates as well as the liquid bitumens which similarly have been heated are discharged into a discharge mechanism or hopper assembly disposed on the mobile frame whereat bituminous concrete is formed. This bituminous concrete is applied to an underlying road surface to provide a covering commonly termed macadam, blacktop, or asphalt, by means of a spreader mechanism which, in the preferred inventive embodiment, constitutes a heating chamber, a plurality of spreading auger conveyors, a vibrator, and a roller compactor. In essence, the instant invention constitutes a mobile bituminous concrete plant which can be sent directly to a job site to mix and apply the bituminous concrete.