摘要:
Plastomer-modified asphalt binders meeting MSCR specifications, asphalt paving materials with such asphalt binders, and methods for fabricating such asphalt binders are provided. The asphalt binder contains a base asphalt and a plastomer. If the plastomer has a drop point no greater than about 139° C., the asphalt binder further contains sulfur; sulfur-containing compounds, such as hydrocarbyl polysulfides and thiuram disulfides; phenolic resins; metal oxides; or a combination thereof. The asphalt binder is substantially free of elastomer.
摘要:
Plastomer-modified asphalt binders meeting MSCR specifications, asphalt paving materials with such asphalt binders, and methods for fabricating such asphalt binders are provided. The asphalt binder contains a base asphalt and a plastomer. If the plastomer has a drop point no greater than about 139° C., the asphalt binder further contains sulfur; sulfur-containing compounds, such as hydrocarbyl polysulfides and thiuram disulfides; phenolic resins; metal oxides; or a combination thereof. The asphalt binder is substantially free of elastomer.
摘要:
The present invention provides compositions and materials displaying luminescent and light-reflecting properties and their uses in the construction, maintenance or repair of roads, bridges, annexed structures and buildings.
摘要:
A mineral substance substantially prevented from undergoing a reaction with a base, obtained by bringing a mineral substance containing silica and/or silicate and being reactive with a basic component into contact with hydrogen peroxide and/or ozone in the presence of water to thereby modify the reaction site(s) of the mineral substance. Said reactive mineral substance is exemplified by an aggregate for hydraulic cement and silicate ceramics. A similar effect can be attained by incorporating hydrogen peroxide and/or ozone in a cement concrete material composed of an aggregate reactive with a base, hydraulic cement and water. The invention is useful for the prolonged stabilization and prevention of contamination of the reactive mineral substance coexistent with a basic component.
摘要:
Erhärtender, anorganischer Baustoff auf der Basis von Flugasche und Wasserglas. Als Ausblühverhinderer wird Kalziumaluminat und/oder Kalziumaluminatsilikat zugesetzt. Als Porenbildner wird Ferrosilizium eingesetzt.
摘要:
The invention relates to a group of performance additives for bitumen or bituminous compositions, comprising an acid adjuvant and a H 2 S scavenger selected from among organic or inorganic copper salts. The invention also relates to the use of the H 2 S scavenger in order to reduce H 2 S emissions from bitumen or a bituminous composition treated with the acid adjuvant. The invention also relates to a method for producing a bituminous composition. The production method of the invention can be used to obtain bitumen/crosslinked polymer compositions having improved mechanical and dynamic properties compared to bitumen/crosslinked polymer compositions of the prior art, while substantially reducing hydrogen sulphide (H 2 S) emissions.
摘要:
An exhaust gas purifying device using a honeycomb structure body used as a filter for collecting particulates in an exhaust gas discharged from an internal combustion engine such as a diesel engine or used as a carrier of a catalyst for purifying the exhaust gas. The honeycomb structure body is constructed by using a composite material formed from ceramic particles and crystalline silicon. Particulates etc. collected by the honeycomb structure body are burnt in the temperature range of 250 to 800°C and removed. Accordingly, even when there is distribution of relatively low temperatures or when long term cold cycles are repeated, thermal stress is restricted from accumulating and cracks are prevented from occurring, resulting in improvement of thermal shock resistance.
摘要:
The invention relates to the use of at least one functional olefinic polymer P for improving the resistance of a bitumen/polymer compounds to petroleum solvents which comprises per weight of bitumen: (1) at least one type of bitumen, and (2) from 0.3 to 20 % of a cross-linkable elastomer, (3) an efficient quantity of a coupling agent Ac which is capable to supply free sulfur in a quantity ranging from 0.1 to 20 % per weight of the cross-linkable elastomer E contained in a reaction medium. Said functional olefinic polymer P is used in a quantity ranging from 0.05 to 15 % per weight of the used bitumen (1).
摘要:
A refractory liquid formed by subjecting powdered or granular potassium hydroxide, powdered or granular sodium carbonate (soda ash), mass of metal silicon and water to a reaction, and a method of manufacturing the same. A refractory material obtained by mixing one or a plurality of kinds of materials selected from paper, rice hulls, fibrous materials, wood chips and sawdust with the refractory liquid, dehydrating the resultant mixture, and then pressure molding the product. A refractory building material obtained by coating one or both surfaces of a wooden plate, a paper plate, a metal plate or a synthetic plate with a viscous liquid produced by mixing bentonite and fibers with the refractory liquid, and then molding the product. A refractory building material obtained by bonding a noninflammable cotton plate to a base plate via a mixture formed by adding bentonite and Chinese cotton to the refractory liquid, and then molding the product. A refractory adhesive formed by adding bentonite, Chinese cotton and Bengal (31) to the refractory liquid, and mixing and agitating the product.