A permeable pavement and cured fiber composition and a related method are provided. The permeable pavement composition includes a quantity of pavement material, and a quantity of cured carbon fiber composite material (CCFCM) configured to be added to the pavement material to produce a reinforced composition having improved characteristics. An example of pavement material includes a pervious concrete material. The method includes providing a quantity of pavement material, and adding a quantity of cured carbon fiber composite material to the pavement material to produce a reinforced composition having improved characteristics.

A permeable pavement and cured fiber composition and a related method are provided. The permeable pavement composition includes a quantity of pavement material, and a quantity of cured carbon fiber composite material (CCFCM) configured to be added to the pavement material to produce a reinforced composition having improved characteristics. An example of pavement material includes a pervious concrete material. The method includes providing a quantity of pavement material and adding a quantity of cured carbon fiber composite material to the pavement material to produce a reinforced composition having improved characteristics.

A permeable pavement and cured fiber composition and a related method are provided. The permeable pavement composition includes a quantity of pavement material, and a quantity of cured carbon fiber composite material (CCFCM) configured to be added to the pavement material to produce a reinforced composition having improved characteristics. An example of pavement material includes a pervious concrete material. The method includes providing a quantity of pavement material and adding a quantity of cured carbon fiber composite material to the pavement material to produce a reinforced composition having improved characteristics.

The present invention relates generally to beneficiation of inorganic matrices via addition of nano-materials without altering the production conditions of the inorganic matrix, and more specifically it relates to enhancement of concrete with wet graphite nanoplatelets using conventional concrete production equipment and procedures without any need for extra measures such as sonication, use of surfactants or functionalization of nanomaterials for dispersion of nanoplatelets.

To provide a concrete-reinforcing shaped body containing concrete-reinforcing fibers and having a plate-like shape. The concrete-reinforcing fibers each preferably have a diameter of 0.3 mm or smaller and a length of 5 mm or larger and 25 mm or smaller.

A method in which a stream of dry cementitious powder from a dry powder feeder passes through a dry cementitious powder inlet conduit to feed a first feed section of a fiber-slurry mixer. An aqueous medium stream passes through at least one aqueous medium stream conduit to feed a first mixing section the fiber-slurry mixer. A stream of reinforcing fibers passes from a fiber feeder through a reinforcing fibers stream conduit to feed a second mixing section of the fiber-slurry mixer. The stream of dry cementitious powder, aqueous medium stream, and stream of reinforcing fibers combine in the fiber-slurry mixer to make a stream of fiber-cement mixture which discharges through a discharge conduit at a downstream end of the mixer.

A method in which a stream of dry cementitious powder from a dry powder feeder passes through a dry cementitious powder inlet conduit to feed a first feed section of a fiber-slurry mixer. An aqueous medium stream passes through at least one aqueous medium stream conduit to feed a first mixing section the fiber-slurry mixer. A stream of reinforcing fibers passes from a fiber feeder through a reinforcing fibers stream conduit to feed a second mixing section of the fiber-slurry mixer. The stream of dry cementitious powder, aqueous medium stream, and stream of reinforcing fibers combine in the fiber-slurry mixer to make a stream of fiber-cement mixture which discharges through a discharge conduit at a downstream end of the mixer.

The fiber boxes (60) each contain fiber (62) and are removably mounted to a fiber injector (9) for injecting the fiber (62) into a material flow stream. The fiber boxes (60) each have an enclosure (61) for containing the fiber (62), preferably a single fiber (62). An aperture 70 provides a feed hole (70) for passing the fiber (62) from an interior of the enclosure (61) to an exterior of the enclosure (61). Contacts (64) having ends disposed on an exterior of the enclosure (61), spaced apart for registering with mating contacts (54) on a fiber distribution ring (40). A frangible element (68) extends between the contacts (64) and provides electrical continuity between the two contacts (64), such that when the fiber (62) is fully withdrawn from within the enclosure (61) the frangible element (68) separates and breaks electrical continuity between the two contacts (64).

The fiber boxes (60) each contain fiber (62) and are removably mounted to a fiber injector (9) for injecting the fiber (62) into a material flow stream. The fiber boxes (60) each have an enclosure (61) for containing the fiber (62), preferably a single fiber (62). An aperture 70 provides a feed hole (70) for passing the fiber (62) from an interior of the enclosure (61) to an exterior of the enclosure (61). Contacts (64) having ends disposed on an exterior of the enclosure (61), spaced apart for registering with mating contacts (54) on a fiber distribution ring (40). A frangible element (68) extends between the contacts (64) and provides electrical continuity between the two contacts (64), such that when the fiber (62) is fully withdrawn from within the enclosure (61) the frangible element (68) separates and breaks electrical continuity between the two contacts (64).

A method of preparing a gypsum-based product comprises the steps of mixing calcined gypsum with polymer particles and water to provide a slurry. The polymer particles comprise principally polyvinyl acetate, and have a particle size distribution, measured using laser diffractometry, such that particles having a diameter of 4.5 ?m or less provide at least 90% of the total particle volume.