5663results about "In situ pavings" patented technology

A paving machine may include a power source, a traction system, a hopper configured to contain paving material, and one or more conveyors configured to transfer the paving material from the hopper. The paving machine may also include a screed configured to lay a mat of the paving material. The paving machine may further include at least one front sensor mounted on a front portion of the paving machine and configured to measure height from a surface to the front sensor and at least one rear sensor mounted on the paving machine and configured to measure height from a surface of the mat to the rear sensor. The paving machine may also include a controller configured to determine a thickness of the mat by determining a difference between one or more front height measurements taken by the at least one front sensor and one or more rear height measurements taken by the at least one rear sensor.

The present invention relates to a process for manufacturing a construction material by mixing a cementitious material, rubber bits and water. It also extends to a construction material comprising cured cementitious material and rubber bits in which the rubber bits are bonded together in a porous and permeable matrix by the cementitious material. An elastic binding material improves the physical properties of the construction material. The construction material can be cast in place or formed into blocks for transport to a construction site.

There is provided a method for making bituminous compositions comprising water-in-oil bituminous dispersion and aggregate by the steps of: preparing a solvent-free, water-in-oil bituminous dispersion comprising: (1) bitumen, in an amount from about 75.0% to about 95.0% by total weight of the bitumen dispersion; (2) a surfactant in an amount from about 0.05% to about 2.0% by total weight of the bitumen dispersion; and (3) water in an amount to complete the water-in-oil bituminous dispersion, and producing the bituminous composition having a temperature from about 50° C. to about 120° C. by mixing: (1) the water-in-oil bituminous dispersion of step (A), having a temperature from about 75° C. to about 95° C., in an amount from about 2.0% to about 10.0% by total weight of the bituminous composition, and (2) aggregate, having a temperature from about 60° C. to about 140° C., in an amount from about 90.0% to about 98.0% by total weight of the bituminous composition.

A roadway structure comprising from top to bottom: a top layer, at least one rigid foundation layer having a high modulus of rigidity and supporting the top layer, the ground, or an untreated material or a damaged roadway, and in addition particularly having an under layer beneath and adhered to the foundation layer, which under layer has a thickness such that it constitutes a support with a smooth and flat surface for the foundation layer laid thereon.

The invention relates to an environment-friendly road surface ice and snow melt coating material, a preparation method thereof and a using method thereof. Serious consequences such as traffic jam and the like can be caused by snow accumulation in winter; and at present, a snow removal method comprises passive snow removal and active snow removal, wherein in the passive snow removal, the operating efficiency of manual snow removal is low, mechanical snow removal is incomplete relatively in clearing, and for the spreading of a snow melt agent, substances with the snow melt effect are mixed simply only, so the spreading is non-uniform, and the snow melt agent dispersed to peripheral air has the major influence on environment; and the active snow removal is high in cost, and has a certain damage to structures of road surfaces, so the service life of roads is shortened. In the environment-friendly road surface ice and snow melt coating material, after being loaded on a carrier material, the snow melt substances are mixed with emulsified asphalt, water-soluble epoxy resin and a curing agent and sprayed on the road surfaces to form an ice and snow melt coating, so that the roads have the function of melting snow actively. By the environment-friendly road surface ice and snow melt coating material, an ice point of water is reduced to between -5 and -20 DEG C so as to clear the ice and snow of the roads, and the coating material has the sustained-release function, is high in coating adhesivity and wear-resisting effect, low in cost and convenient to maintain, and can prolong the life of the road surfaces effectively.