Method and installation (100) for providing a batch of fresh concrete having a temperature in a predetermined temperature range at a remote point of use, whereby a control unit (140) controls at least one step of cooling of cement and/or aggregate and/or mixing water before mixing and/or of the fresh concrete, during the production of the batch.

A method for producing a composite material includes using an alkaline binder containing alkali silicate glass; an organic gelling agent and SiO.sub.2 particles; and a biological carrier material. The composite material is particularly stable, flame-proof and also suitable for the exterior.

A method for producing a composite material includes using an alkaline binder containing alkali silicate glass; an organic gelling agent and SiO.sub.2 particles; and a biological carrier material. The composite material is particularly stable, flame-proof and also suitable for the exterior.

The device and procedure for cooling fresh concrete at elevated temperatures enable efficient cooling of fresh concrete, which is achieved by the subject device comprising of: cooling station (1) with measuring and regulating equipment (2) and safety equipment (3), solenoid valves (5), pressure transmitter (6), cryogenic shut-off valves (7), collector (17) made of stainless steel pipes with temperature probes (8), concrete mixer (9) and manometer (10) with safety valves (11). The procedure of cooling fresh concrete using liquid nitrogen in the mixer is carried out as follows: first aggregate-separated gravel is added, then cement, then water and finally, if necessary, additives-chemical additives. Mixing of added raw materials lasts from 15-20 seconds, until a homogeneous mixture is obtained, after which liquid nitrogen is added at a pressure of 6 bar, giving cooled fresh concrete on which no surface cracks and fissures appear at external temperatures of 30-35 C.