A decorative concrete with a very uniform finish surface and a method of fabricating the same is disclosed. A concrete mixture is poured over a subgrade which defines an exposed surface. The exposed surface is finished with any of several techniques, and the surface is then worked with an abrasive material, and additional techniques are used to color and seal the concrete.

A method and an arrangement used in floor surface treatment. Especially the finishing of a concrete, epoxy, dry shake floor or the like is conducted by using a trowel tool fabricated from a substantially plastic-based material and removably connectable to the operating head of a concrete trowel machine, the purpose being to prevent discoloration of a presently treated floor surface while finishing the same. A trowel tool is fastened to the operating head of a concrete trowel machine used in floor surface finishing for final troweling by means of the Velcro attachment principle by making use of attachment surfaces, which are included on the one hand in the operating head of a concrete trowel machine and on the other hand in the trowel tool and which are removably fastenable to each other.

A method for fabricating a concrete slab upon a surface, the concrete slab having a final thickness and having, upon drying, a maximum dry density, the method including steps of providing a body of no-slump concrete, the no-slump concrete including a combination of aggregate and paste; dispensing the no-slump concrete upon the surface in an even depth layer which has an upper surface and includes an air volume, a portion of the paste residing at an upper surface of the even depth layer; removing a portion of the air volume from the no-slump concrete layer by compaction; trowel mulching the paste which resides at the upper surface; and trowel transporting the mulched paste horizontally over the upper surface to form a smooth concrete paste upper slab surface.

A concrete smoothing assembly having a plurality of blades extending radially from a central hub. The central hub is attachable to a rotating power tool to effectively rotate the blades about a vertical axis. The blades are angled at an offset angle with respect to a horizontal axis, each with a lower working edge adapted to sweep imperfections from a surface of partially dried concrete.

An autonomous power trowel includes a frame supported by at least one rotor having a plurality of troweling blades, at least one power source for selectively rotating the rotor to finish an upper surface of the concrete, at least one actuator onboard the frame for selectively tilting the rotor, and a communication system onboard the frame for communicating with at least one remote communication device. Also included are a plurality of sensors onboard the frame for sensing exterior boundaries of the concrete, and at least one inspection camera for viewing the upper surface of the concrete. A controller onboard the frame is configured to selectively operate the power source, to selectively operate the actuator, to receive communications from the remote communication device, to receive signals from the sensors, and to receive signals from the inspection camera to detect any surface blemish in the concrete.

A mounting adapter for rotatably mounting a tool holding body having first and second surfaces on at least one spider arm of a motor driven rotatable spider assembly of a surface processing apparatus, said mounting adapter comprising: bearing means supported by said second surface; a first aperture extending centrally through said first and second surfaces; a rubber flex pad having a second aperture in vertical registry with and beneath said first aperture; means supporting said rubber flex pad along its periphery and having a third aperture in vertical registry with and beneath said second aperture; an end plug within said third aperture for closing the second aperture, said end plug supporting said flex pad from beneath said third aperture; said rotatable hub of said bearing means including attachment means in the upper portion thereof for facilitating non rotatable attachment to a mounting means adapted for attachment to said spider arm.

A concrete processing system (200) for determining an onset of a first time window (301) for a concrete processing operation in a first area (A), the system (200) comprising one or more concrete sensors (220), a data processing system (240) and a timing support tool (250), wherein the one or more concrete sensors (220) are configured to determine a temperature and/or a moisture level of a maturing concrete slab in the first area (A), and to transmit sensor data indicating the temperature and/or moisture level via respective first communication links (230) to the data processing system (240), the data processing system (240) comprising a database (243) and processing circuitry (242) configured to determine a concrete maturity level for the first area (A) based on the sensor data, to estimate the onset of the first time window based on the concrete maturity level and on data associated with the concrete processing operation stored in the database (243), and to transmit timing data indicating the onset of the first time window to the timing support tool via a second communication link (260), wherein the timing support tool (250) is arranged to support timing of the concrete processing operation in the first area (A) based on the timing data.

A conjoining apparatus for connecting first and second rotary machines to treat a surface, such as rotary cement trowels, or machines used to polish, wax or clean flooring. The conjoining apparatus includes a first bracket assembly comprising a first bracket member and a first connecting mechanism, a second bracket assembly comprising a second bracket member and a second connecting mechanism, and a conjoining frame configured for removable attachment to the first and second bracket assemblies via the respective connecting mechanism. A rotary machine assembly includes a first rotary machine and the conjoining apparatus with the first bracket assembly pivotably connected to the conjoining frame. An adaptor kit including the conjoining apparatus is also provided.

A mounting adapter for rotatably mounting a tool holding body having first and second surfaces on at least one spider arm of a motor driven rotatable spider assembly of a surface processing apparatus, said mounting adapter comprising: bearing means supported by said second surface; a first aperture extending centrally through said first and second surfaces; a rubber flex pad having a second aperture in vertical registry with and beneath said first aperture; means supporting said rubber flex pad along its periphery and having a third aperture in vertical registry with and beneath said second aperture; an end plug within said third aperture for closing the second aperture, said end plug supporting said flex pad from beneath said third aperture; said rotatable hub of said bearing means including attachment means in the upper portion thereof for facilitating non rotatable attachment to a mounting means adapted for attachment to said spider arm.

A decorative concrete with a very uniform finish surface and a method of fabricating the same is disclosed. A concrete mixture is poured over a subgrade which defines an exposed surface. The exposed surface is finished with any of several techniques, and the surface is then worked with an abrasive material, and additional techniques are used to color and seal the concrete.