The invention relates to an additive for additive comprising stone powder, in which the particle diameter is 2€•1000 µm, which particles are coated with a substantially water-insoluble surface-active coating agent, and the use of the additive and a method for manufacturing the additive. The invention also relates to a method for improving the freeze-thaw durability of the concrete, and a concrete.

A capacitor charging arrangement to be supplied by a voltage containing network cycles, and having a gate-controlled semiconductor switch (T_ch) arranged for charging the capacitor (C_aux) and generating a control signal of the gate-controlled semiconductor switch. The control signal is generated with a device that includes a clipper, a first integrator, a second integrator, a ...

An eccentric device comprising an eccentric shaft (2), the eccentric pivot (3) of which is adapted to be connected to a linkage (13) for converting a rotary motion into a reciprocating translational motion, the eccentric shaft (2) being arranged at least partially in a frame (6), the eccentric device comprising a first plurality of magnets (5), which are arranged on the eccentric shaft (2) at the ...

The prefabricated module (10) according to the present invention is the elementary living unit, made up with an unlimited number of units of the same type, so as to create spaces of any size (multiples of the size of the single module) usable for living purposes. Each of the unitary modules (10) consists of the easy aggregation of components (16, 18, 20, 22) of limited weight, transportable both b...

A plant adapted to produce plastic containers comprises a loading feed box (1) of preforms (3), an elevator (12) and an aligner (8) of the preforms (3) in order to arrange them according to a regular sequence, so that said preforms could be inserted into e next blower; thanks to an aligner (18) the preforms (3) are falling down from an elevator (12) into a tank (19), whereas an eccentric vane (21)...

A bending machine with a compact bend arm includes in a bend arm (4) being mounted on a rotating spindle (3) a cylinder which is fed with a pressured fluid through hoses (7) being part of a hydraulic circuit connected to a source of pressured fluid and of an electric circuit. Each of the hoses (7), which are side by side, comprises a curved section (7a) around the rotating spindle (3), the curved ...

A bending machine with a controlled-return bending die includes a matrix (2) mounted around a spindle (3) having an axis y, a bend arm (4) being able to turn around on the same axis y, and a vice (5) adapted to clamp a section of a workpiece to be bent. Driving means causes the bend arm (4) and the matrix (2), both being connected together by the vice (5), to rotate around the axis y for a set ang...