Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions

CCHEMISTRY METALLURGY C04Concrete, cement, ceramics C04BLIME, MAGNESIA SLAG CEMENTS COMPOSITIONS THEREOF

C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions

C04B40/0003making use of electric or wave energy or particle radiation C04B40/0007Electric, magnetic or electromagnetic fields C04B40/001Electromagnetic waves C04B40/0014Microwaves C04B40/0017Irradiation C04B40/0021Sonic or ultrasonic waves C04B40/0025obtaining colloidal mortar C04B40/0028Aspects relating to the mixing step of the mortar preparation C04B40/0032Controlling the process of mixing C04B40/0035Processes characterised by the absence of a mechanical mixing step C04B40/0039Premixtures of ingredients C04B40/0042Powdery mixtures C04B40/0046characterised by their processing C04B40/005High shear mixing; Obtaining macro-defect free materials C04B40/0053Obtaining macro-defect free materials otherwise than by high shear mixing C04B40/0057Energetic mixing C04B40/006involving the elimination of excess water from the mixture C04B40/0064Processes of the Magnini or Hatscheck type C04B40/0067making use of vibrations C04B40/0071making use of a rise in pressure C04B40/0075making use of a decrease in temperature C04B40/0078by freezing C04B40/0082making use of a rise in temperature C04B40/0085involving melting of at least part of the composition C04B40/0089making use of vacuum or reduced pressure C04B40/0092Temporary binders, mortars or concrete, i.e. materials intended to be destroyed or removed after hardening C04B40/0096Provisions for indicating condition of the compositions or the final products C04B40/02Selection of the hardening environment C04B40/0204making use of electric or wave energy or particle radiation C04B40/0209Electric, magnetic or electromagnetic fields C04B40/0213Electromagnetic waves C04B40/0218Microwaves C04B40/0222Irradiation C04B40/0227Sonic or ultrasonic waves C04B40/0231Carbon dioxide hardening C04B40/0236Carbon dioxide post-treatment of already hardened material C04B40/024Steam hardening C04B40/0245including a pre-curing step not involving a steam or autoclave treatment C04B40/025Adiabatic curing or hardening C04B40/0254Hardening in an enclosed space C04B40/0259Hardening promoted by a rise in pressure C04B40/0263Hardening promoted by a rise in temperature C04B40/0268Heating up to sintering temperatures C04B40/0272Hardening under vacuum or reduced pressure C04B40/0277Hardening promoted by using additional water C04B40/0281Hardening in an atmosphere of increased relative humidity C04B40/0286Hardening under water C04B40/029using an aqueous solution or dispersion C04B40/0295Inhomogeneous curing or hardening C04B40/04Preventing evaporation of the mixing water C04B40/06Inhibiting the setting C04B40/0608Dry ready-made mixtures C04B40/0616preformed C04B40/0625Wet ready-made mixtures C04B40/0633Chemical separation of ingredients C04B40/0641Mechanical separation of ingredients C04B40/065Two or more component mortars C04B40/0658Retarder inhibited mortars activated by the addition of accelerators or retarder-neutralising agents C04B40/0666Chemical plugs based on hydraulic hardening materials C04B40/0675Mortars activated by rain, percolating or sucked-up water; Self-healing mortars or concrete C04B40/0683inhibiting by freezing or cooling C04B40/0691Thermally activated mortars