A system provides building materials including a packaging, a lifting device and a mixing and conveying device. The packaging can be positioned by the lifting device via the mixing and conveying device in such a way that a total height of the system is less than 230 cm.

A system for applying a building material, including: a first component of the building material, including a first constituent and a second constituent; a second component of the building material; a first mixer for mixing the first constituent and the second constituent; a supply device for supplying the first constituent to the mixer; a movement device for modifying a site of application in a space; and a second mixer for mixing the first component and the second component.

Compositions and methods are provided for a system in which liquid carbon dioxide, or a mixture of liquid and gaseous carbon dioxide, is converted to solid carbon dioxide by exiting an orifice at a sufficient pressure drop, e.g., for delivery of carbon dioxide to a concrete mixture in a mixer.

A mobile aggregate hopper for a volumetric and gravimetric mixer having arcuate longitudinal walls for holding and isolating aggregate. The mobile aggregate hopper has a base integral with the arcuate longitudinal walls with an aggregate transfer conveyor capable of attachment to a trailer or chassis having wheels. The single sheet structure of the longitudinal arcuate side walls minimizes welding and mechanical joints during manufacturing and provides a hopper with high strength and capacity and low overall weight.

The present disclosure is related to filter elements and more specifically to filter elements for removing dust from air. In an embodiment, an inventive filter element includes a housing having a first side and a second side, filter material in the housing, a space between the filter material and the first side of the housing for forming a suction chamber, and at least one hole in the first side, whereby the area within the circumference of the side of the filter material facing the first side of the housing is larger than the area of at least one hole.

A time-varying detecting device and method for concrete rheological parameters, in which the double-covered cylinder has top and bottom covers (11, 12), both of which can be freely opened, is configured to contain a concrete sample, and a lifting frame includes a pair of vertical supports (21) extending in parallel with each other. The double-covered cylindrical container is held between the pair of vertical supports (21) by means of connecting members (30) in such a manner that it can be flipped 180? about a straight line along which the connecting members (30) extend under the action of an external force. To perform a test, the top cover (11) is opened and a concrete mix is filled in, followed by detecting initial rheological parameters. The top cover (11) is closed, and the concrete mix is left for a predetermined period of time. The double-covered cylindrical container is lifted to a predetermined height by raising the connecting members (30), flipped 180? and lowered back onto the floor. The bottom cover (12) is opened, and the concrete mix is re-mixed and homogenized, followed by finally detecting the time-varying rheological parameters of the concrete mix.

Compositions and methods are provided for a system in which liquid carbon dioxide, or a mixture of liquid and gaseous carbon dioxide, is converted to solid carbon dioxide by exiting an orifice at a sufficient pressure drop, e.g., for delivery of carbon dioxide to a concrete mixture in a mixer.

A method for improving the stability of a soil sample comprises a steps of: a) acquiring the soil sample, b) acquiring a cement, c) forming a cement powder (nano-cement) with an average particle size of between 2 nm and 150 nm, optionally preparing a suspension of the nano-cement in water, d) mixing the cement powder or the suspension of the cement powder in water with the soil sample in a weight ratio of between 1:100 and 1:1 of the cement powder to the soil sample, respectively, e) applying the mixture obtained in step d) to the required construction site, optionally by applying the PWS mixture.

There is provided an apparatus (100) for manufacturing a cementitious slurry comprising foam, the apparatus (100) comprising: a mixing chamber (101) for mixing a cementitious material and water to form a cementitious slurry, a channel (103) fluidly connected to the mixing chamber (101) at a first end (111), the channel (103) for receiving the cementitious slurry from the mixing chamber (101), the channel (103) extending from the first end (111) and terminating at a second end (112); the channel (103) comprising a foam inlet (106) for introducing foam into the channel (103); wherein the channel (103) comprises a mixing cross section, the mixing cross section comprising a first dimension and a second dimension; the first dimension perpendicular to the second dimension; the first dimension being longer than the second dimension; wherein the foam inlet (106) is configured to introduce foam into the channel (103) in a direction generally parallel to the second dimension. A channel (103) for a cementitious slurry and a method are also provided.

According to the present invention, there is provided an apparatus (100) for manufacturing a cementitious slurry comprising foam, the apparatus comprising: a mixing chamber (101) for mixing a cementitious material and water to form a cementitious slurry, a channel (103) fluidly connected to the mixing chamber (101) at a first end (111), the channel (103) for receiving a cementitious slurry from the mixing chamber (101). In the apparatus (100), the channel (103) extends from the first end (111) and terminates at at least one second end (112). The channel (103) comprises a first foam inlet (106) for introducing foam into the channel (103). The channel (103) further comprises a second foam inlet for introducing foam into the channel (103). The first foam inlet (106) and the second foam inlet are offset along the length of the channel (103). A method using the apparatus (100) is also described.