This invention relates to a vehicle arresting system comprising an arrestor-bed of a compactible foam material having a bulk compressive strength and a longitudinal centre axis extending from a front end to a back end opposite the front end, wherein the arrestor-bed comprises an assembly of prefabricated blocks arranged into an even numbered set of linear lanes of prefabricated blocks, where half of the set is located on a left side and half of the set is located on a right side of the longitudinal centre axis of the arrestor-bed, and where each linear line of prefabricated blocks are angled with an angle , where 0<30, towards the longitudinal centre axis of the arrestor-bed.

Disclosed herein are paver adhesives including dry concrete mixes. The paver adhesive can include cement, silica sand, alumina silicate, and latex or acrylic polymer. The paver adhesive can be configured to be applied to a substrate in a dry state. The paver adhesive can be configured to become hydrated subsequent to pavers being installed over the paver adhesive, and the paver adhesive can be configured to cure and adhere paver tiles to the substrate following the hydrating.

A sidewalk-roadway combined block system with a gap, where side connection portions to which left and right sides of unit assembly blocks are physically inserted and coupled are formed, a gap portion is formed between a front surface and a rear surface of the unit assembly block, a groove portion composed of many grooves is formed on a top, and a hollow portion in which rainwater or a mixture dropping down from the gap portion is collected is formed at a lower portion.

A concrete block is described in the form of a surface covering element. The concrete block is made of at least one multi-layer concrete block body. The multi-layer concrete block body has a concrete block layer arranged on the concrete block top side, at least one second concrete block layer adjoining the first concrete block layer and a third concrete block layer adjoining the second concrete block layer. The third concrete block layer forms the concrete block underside. The second concrete block layer is a non-fines porous core layer. The first concrete block layer has a first porosity, the second concrete block layer has a second porosity, and the third concrete block layer has a third porosity, wherein a mean pore size of the pores in the third concrete block layer is smaller than the mean pore size of the pores in the second concrete block layer.

A permeable, pourable concrete that has water permeability of on average about 1 inch per hour and compressive strength of an average of about 3000 psi, the permeable concrete comprising a mixture comprising blast-furnace slag, sand, gravel and Portland-type or equivalent cement, the concrete mixed with a predetermined ratio of water, poured into a predetermined form as desired, and set to harden until sufficiently strong.

The present invention provides a bidirectional energy-transfer system comprising: a thermally and/or electrically conductive concrete, disposed in a structural object; a location of energy supply or demand that is physically isolated from, but in thermodynamic and/or electromagnetic communication with, the thermally and/or electrically conductive concrete; and a means of transferring energy between the structural object and the location of energy supply or demand. The system can be a single node in a neural network. The thermally and/or electrically conductive concrete includes a conductive, shock-absorbing material, such as graphite. Preferred compositions are disclosed for the thermally and/or electrically conductive concrete. The bidirectional energy-transfer system may be present in a solar-energy collection system, a grade beam, an indoor radiant flooring system, a structural wall or ceiling, a bridge, a roadway, a driveway, a parking lot, a commercial aviation runway, a military runway, a grain silo, or pavers, for example.

The invention relates to a concrete block in the form of a planar element that can be laid in combination in order to create a paving. The concrete block has at least one multi-layer concrete block body having at least one concrete-block lower face suitable for being laid on a foundation layer of an underlying surface, and a concrete-block upper face opposite thereto. The multi-layer concrete block body has at least one first concrete-block layer disposed on the concrete-block upper face and in the form of a face concrete layer, at least one second concrete-block layer in the form of a core concrete layer, as well as a third concrete-block layer. The second concrete-block layers is disposed between the first and the third concrete-block layer. The third concrete-block layer has an increased tensile strength.

A shaped block for floors, including a main body having a top side, an underside and at least one side surface, wherein at least one spacer element for specifying a joint width is arranged on the at least one side surface, the at least one spacer element comprising a first rib and a second rib which is spaced apart from the first rib, the first rib and the second rib both extending from the underside toward the top side of the shaped block. A draining device can be formed by means of the spacer element and another, identically designed spacer element of an additional shaped block, the draining device including a water discharge channel which is delimited by the second rib, and the spacer element includes an additional discharge element for discharging liquids into the water discharge channel.

A permeable paving system with a specific multilayer structure, wherein a sub-base layer of crushed drain rocks, a base layer of granite rocks, a layer of coarse sand, & a top layer overlaid with permeable surface material, is provided to improve storm water management by allowing water to permeate through its specific multi-layered structure, thereby reducing surface runoff and enhancing groundwater recharge.

A precast concrete molded body is provided, which is a cured product of a concrete composition. The concrete composition comprises: a microcapsule; cement; and at least one type of aggregate. The microcapsule is provided with a core-shell structure having i) a core made of a water repellent organosilicon material selected from the group consisting of organosilanes, organosilane partial condensation products, and branched siloxane resins, and ii) a shell made of a silicon-based network polymer containing silica units. The concrete composition contains 0.01 to less than 0.5 parts by weight of microcapsules per 100 parts by weight of cement. Thereby, a precast concrete molded body can be provided, having high strength, as well as at least one of the following properties: air content stability, substance penetration prevention, and freeze-thaw resistance.