Amines and amine derivatives that improve the buffering range, and/or reduce the chelation and other negative interactions of the buffer and the system to be buffered. The reaction of amines or polyamines with various molecules to form polyamines with differing pKa's will extend the buffering range, derivatives that result in polyamines that have the same pKa yields a greater buffering capacity. Derivatives that result in zwitterionic buffers improve yield by allowing a greater range of stability.

The present invention relates to a co-solubilization process for preparation of a polymer modified bitumen/asphalt and emulsified polymer modified bitumen/asphalt from bitumen, polymer, emulsifier etc. The present invention further relates to a polymer modified bitumen comprising bitumen and styrene-butadiene-styrene (SBS) linear co-polymer having high softening point. The present invention also relates to the use of the polymer modified bitumen and its emulsion in in micro-surfacing for maintenance of pavements.

An emulsified drilling fluid additive includes an emulsion of asphalt, at least one emulsifier, cellulose ether, and water. The asphalt has a softening point of 160 to 212 F., a penetration depth of 0 to 45 mm, and a viscosity of 200 to 800 cP at 350 F. The drilling fluid additive has an average particle size of 0.1-10 microns. The drilling fluid has an API fluid loss at 7.5 minutes of 0 to 0.5 mL and an API fluid loss at 30 minutes of 0 to 3.5 mL. A method of making the drilling fluid additive includes mixing at least one emulsifier, cellulose ether, and water to form a solution, heating a water-dispersible asphalt to above 300 F. and adding the asphalt to the water-based solution in a colloid mill to form an emulsion.

Disclosed is a preparation method of a renewable epoxy asphalt material and a regeneration process. The preparation method comprises: I Vanillin and 4-aminophenol are reacted in water with stirring to obtain VAN-AP; II. VAN-AP is mixed with epichlorohydrin, to which tetrabutylammonium bromide is added and heated at 80 to 90 C. for reaction; sodium hydroxide solution is then added dropwise for reaction; the mixture is concentrated to obtain GE-VAN-AP; III. Preheated asphalt is mixed with a polyetheramine curing agent and a polyetheramine accelerator to form component A; GE-VAN-AP is melted as component B; the component A is evenly mixed with the component B to obtain a renewable epoxy asphalt material. During the regeneration, the resin phase structure in the epoxy asphalt is gradually depolymerized, whereby asphalt regenerant is used to restore the properties of the aged asphalt phase and reshape the resin phase structure to complete the regeneration.

Systems, components, apparatuses and methodologies of the present invention are directed to techniques that ensure that all deck-to-wall, roof-to-wall and other constructions properly protect the home from the environment, particularly along the wetter coastal regions by forming a layered, waterproof seal of metal, plastic and bitumen. A modularized system of components, that overlap each other either over and or under to create a system that meets the design criteria of critical flashing components, each with waterproofing capability either built-in or applied onsite in use, are employed to cover critical building areas prone to water infiltration and damage.

The invention relates to a method for manufacturing a road pavement comprising pipes of a device for a heat exchanger, comprising the following steps: a) digging a course to create grooves extending in a same direction and strips connecting the grooves, then b) laying the pipe having a crushing strength higher than 2 000N per linear metre of pipe at 100 C. into the grooves created in step a); and then c) filling the empty space left free by the pipe in the grooves with an asphalt mix having a working temperature lower than 160 C., based on: a hydrocarbon binder, at least 90% by weight, with respect to the total weight of the asphalt mix, of an aggregate fraction the elements of which have dimensions less than 10 mm, and comprising from 30% to 60% by weight, with respect to the total weight of the aggregate fraction, of sand, d) applying a surface course for a road pavement.

The present description relates to asphalt coating compositions, and methods of application, for coating asphalt paving surfaces. In particular, sprayable coating compositions are provided, and methods of application, for coating asphalt paving surfaces. In the coating composition, a lightweight aggregate material of sprayable particle size is stably suspended in a sprayable asphalt emulsion in an amount sufficient to increase the micro-texture surface roughness of the cured coating.

A water extraction process for separating bitumen from tar sands comprises slurrying tar sands in water, mixing the aqueous slurry with a magnetic substance for a time sufficient to release bitumen from tar sands and to uniformly disperse the magnetic substance with the bitumen, and subjecting the resulting slurry to froth flotation for recovery of a bitumen product and production of sand tails. The magnetic substance may comprise a magnetic surfactant. Alternatively, the magnetic substance comprises a magnetic nanoparticle together with a frother having the characteristics of methyl-isobutyl-carbinol and can be mixed with the aqueous slurry by attrition scrubbing or by flotation cell mixing. The magnetic substance may be recovered for further reuse by applying a magnetic or electromagnetic field to the tailings. The process may suitably applied in both so-called hot water extraction processes as well in an ambient temperature (from about freezing to 35 C.) process.

The present technology relates to an anti-stripping agent for an asphalt mixture, which includes a refined slowly-cooled slag obtained by processing slag, generated in ironmaking and steelmaking processes, using a specific method, and to a method for preparing the same, an asphalt mixture including the same, and a method for preparing the asphalt mixture. The refined slowly-cooled slag may include 55 to 65 mass % of CaO, 5 to 10 mass % of SiO.sub.2, 1 to 5 mass % of Al.sub.2O.sub.3, and 1 to 5 mass % of MgO.

A void filling asphalt emulsion and a method of using the void filling asphalt emulsion to fill voids below the surface of an asphalt pavement. The void filling emulsion is prepared by forming a base asphalt emulsion having about 45 to 75 wt. % of an asphalt content, and combining the base asphalt emulsion with a surface tension reducing solution to produce a void filling asphalt emulsion that has about 25 to 50 wt. % of an asphalt content. When applied to an asphalt pavement the void filling emulsion penetrates into the asphalt pavement and fills voids in the asphalt pavement. The void filling emulation further being water resistant so as not to be washed off a pavement surface by water after being applied to the pavement.