A mortar composition includes: 15-50 wt.-% of a mineral binder, whereby with respect to 100 parts by weight of the mineral binder, the mineral binder includes 40-70 parts by weight of cement and 30-60 parts by weight of a cement substitute based on clay, limestone and gypsum and whereby, with respect to 100 parts by weight of the cement substitute, the cement substitute includes 35-65 parts by weight of clay, especially calcined clay, 1-20 parts by weight of gypsum, and rest to 100 parts by weight of limestone; 50-80 wt.-%, especially 62-65 wt.-%, of aggregates, especially sand; 0-10 wt.-%, especially 0-6 wt.-% of one or more additives; whereby all of the wt.-% are with respect to the dry weight of the mortar composition.

A two-component mortar system chemically fastens anchors in mineral substrates. The two-component mortar system has a curable aqueous-phase aluminous cement component A and a component B in an aqueous-phase for initiating a curing process. The two-component mortar system is ready-to-use in a method for chemical fastening of anchors in mineral substrates.

A two-component mortar system chemically fastens anchors in mineral substrates. The system has a curable aqueous-phase aluminous cement component A and an initiator component B in an aqueous-phase for initiating a curing process. A ready-for-use two-component system for chemical fastening fastens anchors to metal elements, structures made of brickwork, concrete, pervious concrete or natural stone.

A multi-component mortar system contains a curable aqueous-phase aluminous cement component A and an initiator component B in aqueous-phase for initiating the curing process. Component A further contains at least one plasticizer, water, and at least one blocking agent selected from phosphoric acid, metaphosphoric acid, phosphorous acid, and phosphonic acids. Component B contains an initiator, at least one retarder, at least one mineral filler, and water. A multi-component system is useful, which is ready-for-use, for chemical fastening of anchoring means, preferably of metal elements, in mineral surfaces, such as structures made of brickwork, concrete, pervious concrete or natural stone as well as its use for chemical fastening of anchoring means.

The incorporation of calcium sulfate in an inorganic mortar system for chemical fastening of anchors in mineral substrates increases load values of the inorganic mortar system and reduces shrinkage significantly, guaranteeing a secure anchoring application. The inorganic mortar system has a curable aqueous-phase aluminous cement component A and an initiator component B in aqueous-phase for initiating the curing process. The calcium sulfate containing inorganic mortar system fastens anchors in mineral substrates in a method for chemical fastening of anchors in mineral substrates.

A multi-component mortar system contains a curable aqueous-phase aluminous cement component A and an initiator component B in aqueous-phase for initiating the curing process. Component A further contains at least one plasticizer, water, and at least one blocking agent selected from phosphoric acid, metaphosphoric acid, phosphorous acid, and phosphonic acids. Component B contains an initiator, at least one retarder, at least one mineral filler, and water. A multi-component system is useful, which is ready-for-use, for chemical fastening of anchoring means, preferably of metal elements, in mineral surfaces, such as structures made of brickwork, concrete, pervious concrete or natural stone as well as its use for chemical fastening of anchoring means.

A method of fabricating a concrete slab on ground system includes depositing wet geopolymer cement concrete on a ground substrate to generate a first slab. Wet Portland cement concrete is then deposited on the first slab to generate a second slab.

The present invention relates to a two-component composition consisting of a component A intended to be mixed, in situ, with a component B in order to form an injectable or pumpable organo-mineral compound, in particular for injection-sealing dynamic anchor bolts, comprising at least one alkali metal silicate, at least one polyisocyanate derivative and at least one cement. The component A further contains at least one polyol having a molecular mass of between 50 and 200 g/mol, at least one polymerisation catalyst comprising at least one polar function and at least one gelling agent and the component B further comprises at least one suitable.

A multi-component inorganic capsule anchoring system can be used for chemically fastening anchors, bolts, screw anchors, screw bolts, and post-installed reinforcing bars in mineral substrates. The multi-component inorganic capsule anchoring system contains a curable powdery ground-granulated blast-furnace slag-based component A, and an initiator component B in aqueous-phase for initiating a curing process. The powdery ground-granulated blast-furnace slag-based component A contains further silica dust. The component B contains an alkali-silicate component and optionally a plasticizer.

A method of fabricating a concrete slab on ground system includes depositing wet geopolymer cement concrete on a ground substrate to generate a first slab. Wet Portland cement concrete is then deposited on the first slab to generate a second slab.