A method of slowing an aircraft overrunning a runway, including covering an area adjacent a runway with irregular foamed glass bodies having aspect ratios of about 1:1.9 and diameters of about 10 mm to about 80 mm to define a bed, pouring liquid cement over the foamed glass bodies such that the cement infiltrates at least through the bed, curing the liquid cement to define a composite material of foamed glass bodies in a cementitious matrix, and crushing at least a portion of the composite material with an oncoming aircraft, slowing the aircraft. The composite material is at least 85 volume percent foamed glass bodies. When pouring the cement, the liquid cement flows over and around the foamed glass bodies. The aggregate bodies crush and break up before slip failure occurs when being overrun by an aircraft. The aggregate bodies intersect to define stacking angles of about 35 degrees. The cementitious matrix has a cementitious surface.

An arrestor bed for slowing an aircraft overrunning a runway, including an elongated excavation and a plurality of irregularly shaped foamed glass bodies at least partially filing the excavation. Each respective irregularly shaped foamed glass body has an aspect ratio between 1:1.6 to 1:1.7 and a diameter of about 1 inch. The irregularly shaped foamed glass bodies intersect to define stacking angles of about 35 degrees. Under compression, the irregularly shaped foamed glass bodies crush and break up before slip failure occurs such that the roadbed has a crushing failure mode.

Disclosed are a steel girder pavement structure (100) for high-speed road for bicycle, and a roadbed pavement method therefor. The pavement structure (100) includes a top plate (10), a bottom plate (20), a web (30), stiffening plates (40), and decorative plates (50). A composite roadbed is paved on a surface layer of the top plate (10). The composite roadbed includes, from bottom to top, a substrate, a primer coating and quartz sand (101), a waterproof coating (102), an anti-slip coating and quartz sand (103), a wear-resistant coating (104) and an anti-ultraviolet coating (105). The roadbed pavement method includes: paving various layers of materials on a surface of the steel plate from bottom to top. The high-speed road for bicycle is easy to seamlessly connect to a transportation hub, and has a high comfort degree.

Disclosed are a steel girder pavement structure (100) for high-speed road for bicycle, and a roadbed pavement method therefor. The pavement structure (100) includes a top plate (10), a bottom plate (20), a web (30), stiffening plates (40), and decorative plates (50). A composite roadbed is paved on a surface layer of the top plate (10). The composite roadbed includes, from bottom to top, a substrate, a primer coating and quartz sand (101), a waterproof coating (102), an anti-slip coating and quartz sand (103), a wear-resistant coating (104) and an anti-ultraviolet coating (105). The roadbed pavement method includes: paving various layers of materials on a surface of the steel plate from bottom to top. The high-speed road for bicycle is easy to seamlessly connect to a transportation hub, and has a high comfort degree.

Design and construction method for improving an expansive soil embankment using phosphogypsum and microbes, including the following steps: (1) placing Bacillus pasteurii into a culture medium to prepare a microbial solution, and mixing urea and calcium chloride with water to prepare a cementing fluid; (2) mixing and stirring a mixture, the microbial solution and water, adding the cementing solution well, and mixing the cementing fluid with water to prepare an improved mixture; and (3) leveling and compacting original ground, laying geomembranes, the improved mixture, and geogrids, laying a last layer of geomembrane on the top surface of the embankment after pavement of the embankment, and paving a roadbed. The design and construction method can meet construction requirements of highway embankment projects and roadbed projects of first-grade and other grades of roads, and consume solid waste phosphogypsum.

A support layer for supporting an artificial turf assembly. The support layer being formed of a polymeric foam, preferably having a density of between 20 and 70 grams per liter, such as a polyolefin foam; and having an upper side and a lower side, wherein in use the support layer has been placed with the lower side thereof on a base surface and supports, on the upper side thereof, the artificial turf assembly, the support layer including a plurality of through drainage holes extending from the upper side to the lower side for allowing liquid such as rain water to flow via the plurality of drainage holes from the upper side to the lower side, and also including a plurality of channels at the lower side for allowing liquid such as rain water to flow through the channels along the lower side, wherein each of said plurality of drainage holes debouches into one of the plurality of channels. The support layer is further included in an artificial turf system, that includes an artificial turf assembly with the support layer supported on a base surface such as a layer of sand, wherein the support layer forms, at the upper sides thereof, a closed support surface supporting the artificial turf assembly.

An underlayment layer is configured to support an artificial turf assembly. The underlayment layer comprises a core with a top side and a bottom side. The top side has a plurality of spaced apart, upwardly oriented projections that define channels suitable for fluid flow along the top side of the core when the underlayment layer is positioned beneath an overlying artificial turf assembly.

A plant surface structure includes an array of plastic base elements, each base element having a deck carried by a series of pillar elements. The deck is provided with at least a number of the pillar elements having an open top end in the deck. A membrane is placed over the deck and is provided with slits or cut-outs or water permeable elements, such that they open into at least some of the open top ends of the pillar elements. A growing medium is provided on the membrane and a growing medium is provided in the pillar elements, the growing medium in the pillar elements preferably being in fluid contact with the growing medium on the membrane.

An improved sealant packaging and method for use with sealing joints and cracks in pavement and parking lots is provided. Liquid sealant material is poured by volume into a container draped with a sheet. Container is cooled so that the sealant becomes a solid block, with the sheet adhered to the sides of the sealant block such that the sheet forms a container for the sealant. The sheet also acts a release liner for easily removing the sealant block from the container. Two or more contained blocks are stacked together, forming a package of two or more blocks self-sealed by sheets. When the package is placed in a melting kettle, heat migrates through the spaces between the individual sealant blocks and allows the smaller sealant blocks to melt quickly and evenly. Sheet and film melt with sealant material and are incorporated therein to form the final sealant product.

The invention discloses a method for strengthening and widening subgrade with geocell based on conductive polymer, which belongs to the technical field of road construction. It includes the following steps: slope cutting and bench excavation for the existing embankment slope; leveling for the treated existing subgrade; filling and widening subgrade on the basis of the leveled existing subgrade; compacting the widened subgrade so that the compacted widened subgrade and the leveled existing subgrade are in the same plane; on the widened Subgrade The geocell based on the conductive polymer is tensioned and fixed for the first time; the geocell based on the conductive polymer is compacted to obtain the widened Subgrade of the geocell based on the conductive polymer. It can minimize the possibility of longitudinal cracks between the existing subgrade and the widened subgrade. In addition, it uses the conductivity of geocell based on conductive polymer to provide a material basis for monitoring the risk of cracks at the junction of the existing subgrade and the widened subgrade.