SEMMATERIALS, L.P. Patent applications |
Patent application number | Title | Published |
20100222469 | A CRACK RESISTANT LAYER WITH GOOD BINDER FRACTURE ENERGY PROPERTIES AND METHOD OF SELECTING SAME - A method of selecting a crack resistant layer to be applied to an existing surface, the method comprising the steps of: selecting at least one bituminous binder to examine, where the bituminous binder comprises bitumen and one or more polymers, where the one or more polymers include a sufficient amount of conjugated diene such that at least 2.5% of the bituminous binder's weight comprises conjugated diene, preferably at least 3.0%. more preferably at least 3.5%, and most preferably 4.0%; forming at least one bituminous mixture comprising the bituminous binder and an aggregate; testing each bituminous binder for binder fracture energy properties; and selecting a bituminous binder for use in the crack resistant layer. The method may further comprise the steps of testing the bituminous mixture for fatigue properties and selecting the bituminous binder for use in the crack resistant layer based on fatigue properties and binder fracture energy properties, and/or testing the bituminous mixture for fracture energy and selecting the bituminous binder for use in the crack resistant layer based on mixture fracture energy properties and bituminous binder fracture energy properties. | 09-02-2010 |
20100222468 | CRACK RESISTANT LAYER WITH GOOD BEAM FATIGUE PROPERTIES AND METHOD OF SELECTING SAME - A method of selecting a crack resistant layer to be applied to an existing surface, the method comprising the steps of: selecting at least one bituminous binder to examine, where the bituminous binder comprises bitumen and one or more polymers, where the one or more polymers include a sufficient amount of conjugated diene such that at least 2.5% of the bituminous binder's weight comprises conjugated diene, preferably at least 3.0%, more preferably at least 3.5%, and most preferably 4.0%; forming at least one bituminous mixture comprising the bituminous binder and an aggregate; testing each bituminous mixture for fatigue properties; and selecting a bituminous binder for use in the crack resistant layer. The method may further comprise the steps of testing the bituminous mixture for fracture energy and selecting the bituminous binder for use in the crack resistant layer based on fatigue properties and fracture energy properties, and/or testing the bituminous binder for fracture energy and selecting the bituminous binder for use in the crack resistant layer based on fatigue properties and bituminous binder fracture energy properties. | 09-02-2010 |
20100222467 | CRACK RESISTENT LAYER WITH GOOD MIXTURE FRACTURE ENERGY MADE FROM AN EMULSION OF A POLYMER MODIFIED BITUMINOUS BINDER AND METHOD OF SELECTING SAME - A method of selecting a crack resistant layer to be applied to an existing surface, the method comprising the steps of: selecting at least one emulsified bituminous binder to examine, where the emulsified bituminous binder comprises bitumen, one or more emulsifier, and one or more polymers, where the one or more polymers, the one or more emulsifier, or both include a sufficient amount of conjugated diene such that at least 2.5% of the emulsified bituminous binder residuum weight comprises conjugated diene, preferably at least 3.0%, more preferably at least 3.5%, and most preferably 4.0%; forming at least one bituminous mixture comprising the emulsified bituminous binder and an aggregate; testing each bituminous mixture for mixture fracture energy properties; and selecting a emulsified bituminous binder for use in the crack resistant layer. The method may further comprise the steps of testing the bituminous mixture for fatigue properties and selecting the emulsified bituminous binder for use in the crack resistant layer based on fatigue properties and mixture fracture energy properties, and/or testing the emulsified bituminous binder residuum for fracture energy and selecting the emulsified bituminous binder for use in the crack resistant layer based on mixture fracture energy properties and bituminous binder fracture residuum energy properties. | 09-02-2010 |
20100222466 | CRACK RESISTANT LAYER WITH GOOD BEAM FATIGUE PROPERTIES MADE FROM AN EMULSION OF A POLYMER MODIFIED BITUMINOUS BINDER AND METHOD OF SELECTING SAME - A method of selecting a crack resistant layer to be applied to an existing surface, the method comprising the steps of: selecting at least one emulsified bituminous binder to examine, where the emulsified bituminous binder comprises bitumen, one or more emulsifier, and one or more polymers, where the one or more polymers, the one or more emulsifier, or both include a sufficient amount of conjugated diene such that at least 2.5% of the weight of the emulsified bituminous binder residuum comprises conjugated diene, preferably at least 3.0%, more preferably at least 3.5%, and most preferably 4.0%; forming at least one bituminous mixture comprising the emulsified bituminous binder and an aggregate; testing each bituminous mixture for fatigue properties; and selecting a bituminous binder for use in the crack resistant layer. The method may further comprise the steps of testing the bituminous mixture for fracture energy and selecting the emulsified bituminous binder for use in the crack resistant layer based on fatigue properties and fracture energy properties, and/or testing the emulsified bituminous binder residuum for fracture energy and selecting the emulsified bituminous binder for use in the crack resistant layer based on fatigue properties and bituminous binder residuum fracture energy properties. | 09-02-2010 |
20100222465 | CRACK RESISTANT LAYER WITH GOOD MIXTURE FRACTURE ENERGY AND METHOD OF SELECTING SAME - A method of selecting a crack resistant layer to be applied to an existing surface, the method comprising the steps of: selecting at least one bituminous binder to examine, where the bituminous binder comprises bitumen and one or more polymers, where the one or more polymers include a sufficient amount of conjugated diene such that at least 2.5% of the bituminous binder's weight comprises conjugated diene, preferably at least 3.0%, more preferably at least 3.5%, and most preferably 4.0%; forming at least one bituminous mixture comprising the bituminous binder and an aggregate; testing each bituminous mixture for mixture fracture energy properties; and selecting a bituminous binder for use in the crack resistant layer. The method may further comprise the steps of testing the bituminous mixture for fatigue properties and selecting the bituminous binder for use in the crack resistant layer based on fatigue properties and mixture fracture energy properties, and/or testing the bituminous binder for fracture energy and selecting the bituminous binder for use in the crack resistant layer based on mixture fracture energy properties and bituminous binder fracture energy properties. | 09-02-2010 |
20100222464 | EMULSION OF A POLYMER MODIFIED ASPHALT - A method for formulating an emulsified polymer modified asphalt, and the emulsion thus created. The method includes mixing at least one polymer and a first binder in a high shear device to produce a polymer-binder composite; mixing the polymer-binder composite with a second binder to form a polymer modified asphalt; and emulsifying the polymer modified asphalt by combining effective amounts of an emulsifying agent and of water with the polymer modified asphalt. | 09-02-2010 |
20090137690 | Delinked Polymer Modified Bitumen and Method of Producing Same - A delinked polymer modified bitumen comprising a delinked polymer-bitumen composite and additional bituminous material. The delinked polymer-bitumen composite comprises sulfur-cured elastomeric material having a vulcanized network and a plurality of polymer backbones; at least one rubber accelerator and at least one activator in sufficient quantities to delink the vulcanized network of the sulfur-cured elastomeric material; and at least one bituminous material, where the sulfur-cured elastomeric material, the rubber accelerator, the activator, and the bituminous material are mixed under high shear conditions at a temperature greater than 70° C. to produce the delinked polymer-bitumen composite. | 05-28-2009 |