Disclosed is a vibration device with a vibrating table for a concrete block manufacturing machine for compression of a material to be compressed. The vibration device is at least partially resiliently mounted on a machine frame and driven by at least one electric motor. As a result the vibrating table can be set in a predominantly vertical vibrating movement, wherein the vibration device has a plurality of vibrating table bars arranged parallel to one another and fastened to the vibrating table and impact bars fastened statically to the machine frame. All the impact bars are displaceable relative to the vibrating table bars and along a displacement axis running parallel to the vertical vibrating movement by a plurality of positioning devices connected to one another and driven by at least one common drive unit in order to obtain a synchronous displacement of all the impact bars.

A high toughness inorganic composite artificial stone panel and preparation method are disclosed. The panel includes a surface layer, an intermediate metal fiber toughening layer and a substrate toughening layer. The surface layer includes the following components: 40-70 parts of quartz sand, 10-30 parts of quartz powder, 20-45 parts of inorganic active powder, 0.5-4 parts of pigment, 0.3-1 part of water reducer and 3-10 parts of water. The intermediate metal fiber toughening layer includes the following components: 40-60 parts of inorganic active powder, 45-65 parts of sand, 0.8-1.5 parts of water reducer, 6-14 parts of water and 4-8 parts of metal fiber. The substrate toughening layer includes the following components: 30-50 parts of inorganic active powder, 30-55 parts of quartz sand, 15-20 parts of quartz powder, 0.5-1.2 parts of water reducer, 4-8 parts of water and 0.8-2.5 parts of toughening agent.

Methods, compositions, and apparatuses are provided herein that utilize polystyrene from recycled products to make a high strength composite concrete that can be used for subgrade utility vaults, utility trenches, etc. Polystyrene is a widely-used plastic that can be collected and then densified at particular parameters including temperature to transform the polystyrene to a usable form. Then, the densified polystyrene is combined with other resin materials and dry materials to form a high-strength concrete material. The amount of densified polystyrene that is combined with the other materials is critical to control shrinkage and expansion of the concrete material during manufacturing.

This document describes systems and processes for forming synthetic molded slabs, which may be suitable for use in living or working spaces (e.g., along a countertop, table, floor, or the like).

The present disclosure discloses a method for compression casting concrete by reducing an amount of cement, including: adopting any existing concrete mix proportion designed for concrete of given strength, mixing the concrete, pouring the concrete into a mould, and compressing the concrete at a given pressure, where 28-day strength of the compacted concrete is increased; gradually reducing an amount of cement while keeping amounts of other materials unchanged, where 28-day strength of the concrete is gradually reduced until the concrete meets a design index; proportionally reducing amounts of water and cement in a last mix proportion while keeping amounts of other materials unchanged, where during compression casting of the concrete, discharge of cement paste is gradually reduced until no cement paste is discharged; and compression casting a concrete member according to a final mix proportion.

This document describes systems and processes for forming synthetic molded slabs, which may be suitable for use in living or working spaces (e.g., along a countertop, table, floor, or the like).

The present disclosure discloses a method for compression casting concrete to reduce the amount of cement, including: adopting any existing concrete mix proportion designed for concrete of given strength, mixing the concrete, pouring the concrete into a mould, and compressing the concrete at a given pressure, where 28-day strength of the compacted concrete is increased; gradually reducing the amount of cement while keeping the amounts of other materials unchanged, where 28-day strength of the concrete is gradually reduced until the concrete meets a design index; proportionally reducing amounts of water and cement in a last mix proportion while keeping the amounts of other materials unchanged, where during compression casting of the concrete, discharge of cement paste is gradually reduced until no cement paste is discharged; and compression casting a concrete member according to a final mix proportion.

The equipment for the production of slabs in mineral grits bound with resins, comprises: a support frame, at least one lower plate, locked together with the frame, comprising at least one positioning zone for at least one mold having at least one forming cavity, open at the top, to contain a mix comprising the materials necessary to obtain the slabs, at least one pressing assembly comprising an upper plate movable, with respect to the frame, from an upper position of loading/unloading the mold in/from the positioning zone, to a lower position of pressing the mix inside said forming cavity, vibrating means associated at least with the lower plate, and an airtight chamber, communicating with suction means, adapted to reduce the pressure to a value lower than the atmospheric pressure, containing the mold, where the chamber is interposed between the lower plate and an upper closing element opposite the lower plate.

Plant (2) for the production of slabs made of composite stone material from a mix (M) containing granules of stone or ceramic or glass material and a binder, comprising at least one temporary support or mould (S), a distributor for the mix (M) designed to distribute a layer of mix (M) on the temporary support or mould (S), a station (4) for performing compaction by means of vacuum vibro-compression of the mix (M) arranged on the temporary support or mould (S) and a station for hardening the mix (M) so as to form the finished slabs. The plant (2) comprises a device (1) positioned downstream of the distributor and upstream of the compaction station (4) and comprising means (16) which act on the top surface of the mix (M) for pre-compaction and levelling of the mix (M) arranged on the temporary support or mould (S). The invention also relates to a method for the production of slabs of composite stone material from a mix (M).

A structure construction apparatus according to one embodiment comprises: a frame unit provided on the ground on which a structure is to be constructed; a formwork unit which is mounted on the frame unit, and which maintains structural materials in a form to be constructed; and a compacting unit disposed to be adjacent to the formwork unit so as to compact the structural materials provided in the formwork unit, wherein the formwork unit and the compacting unit are moved by means of the frame unit so that the structure can be automatically constructed.