The invention relates to an additive composition, which comprises a thickener and a thixotropic agent and is characterized in that the thickener is cellulose or a derivative thereof and that the thixotropic agent is a pyrogenically produced silicic acid, the surface of which is modified with groups of general formula (I) SiR.sub.aR.sup.1.sub.bOR.sup.2.sub.c (I), in which a can equal 1, 2, or 3, b can equal 0, 1, or 2, and c can equal 0, 1, or 2, wherein a+b+c=3, and R can be a monovalent, optionally monounsaturated or polyunsaturated, optionally branched hydrocarbon group having 1 to 24 carbon atoms, R.sup.1 can be a likewise monovalent, optionally monounsaturated or polyunsaturated, optionally branched hydrocarbon group having 1 to 20 carbon atoms, and R.sup.2 can be a hydrogen atom, a monovalent, optionally monounsaturated or polyunsaturated, optionally branched hydrocarbon group having 1 to 20 carbon atoms, or a bond to another Si atom, with the stipulation that at least one of the groups R or R.sup.1 is a hydrocarbon group having more than 3 carbon atoms.

The invention relates to an additive composition, which comprises a thickener and a thixotropic agent and is characterized in that the thickener is cellulose or a derivative thereof and that the thixotropic agent is a pyrogenically produced silicic acid, the surface of which is modified with groups of general formula (I) SiR.sub.aR.sup.1.sub.bOR.sup.2.sub.c (I), in which a can equal 1, 2, or 3, b can equal 0, 1, or 2, and c can equal 0, 1, or 2, wherein a+b+c=3, and R can be a monovalent, optionally monounsaturated or polyunsaturated, optionally branched hydrocarbon group having 1 to 24 carbon atoms, R.sup.1 can be a likewise monovalent, optionally monounsaturated or polyunsaturated, optionally branched hydrocarbon group having 1 to 20 carbon atoms, and R.sup.2 can be a hydrogen atom, a monovalent, optionally monounsaturated or polyunsaturated, optionally branched hydrocarbon group having 1 to 20 carbon atoms, or a bond to another Si atom, with the stipulation that at least one of the groups R or R.sup.1 is a hydrocarbon group having more than 3 carbon atoms.

A resin mixture is described, comprising at least one compound that can be radically polymerized, at least one reactive diluent selected from 1,3-dicarbonyl compounds, and at least one polymerization inhibitor, selected from stable N-oxyl-radicals or 4-hydroxy-3,5-di-tert-butyl toluene, with the molar ratio of at least one 1,3-dicarbonyl compound and the polymerization inhibitor ranging from 30:1 to 150:1, a reaction resin mortar comprising said resin mixture, a two-component or multi-component system, as well as the use for construction purposes, particularly for the chemical fastening in mineral undergrounds.

A resin mixture is described, comprising at least one compound that can be radically polymerized, at least one reactive diluent selected from 1,3-dicarbonyl compounds, and at least one polymerization inhibitor, selected from stable N-oxyl-radicals or 4-hydroxy-3,5-di-tert-butyl toluene, with the molar ratio of at least one 1,3-dicarbonyl compound and the polymerization inhibitor ranging from 30:1 to 150:1, a reaction resin mortar comprising said resin mixture, a two-component or multi-component system, as well as the use for construction purposes, particularly for the chemical fastening in mineral undergrounds.

Mineral binder compositions with accelerated setting and/or curing including a mineral binder, at least one free-radical initiator, and at least one catalyst for the at least one free-radical initiator. The mineral binder compositions accelerated setting and hardening and are especially useful for applications at low temperatures and even below 0? C.

Mineral binder compositions with accelerated setting and/or curing including a mineral binder, at least one free-radical initiator, and at least one catalyst for the at least one free-radical initiator. The mineral binder compositions accelerated setting and hardening and are especially useful for applications at low temperatures and even below 0? C.

A packaging system can process a curable multi-component mass. The packaging system includes a plastic container, and a reactive component of the multi-component mass, which is present in the plastic container. The plastic container is a foldable plastic container with at least one closable opening, and the reactive component is present as powder and fills only part of a total volume of the plastic container.

A packaging system can process a curable multi-component mass. The packaging system includes a plastic container, and a reactive component of the multi-component mass, which is present in the plastic container. The plastic container is a foldable plastic container with at least one closable opening, and the reactive component is present as powder and fills only part of a total volume of the plastic container.

Synthetic aggregates are fabricated from greater than approximately 70 wt % waste starting materials. Starting materials may be selected from granulated ground blast furnace slag, waste concrete fines, or sewage sludge ash, and mixtures thereof. The starting materials are bound together by a hydraulic cementitious binder either added to the starting materials or formed in situ. The waste starting materials, binder, and water are formed into pellets and subjected to a hydraulic reaction and carbonation in an atmosphere of greater than approximately 50% carbon dioxide at temperatures less than approximately 100 C. The resulting synthetic aggregate has a crush strength after a period of hardening equal to or greater than approximately 0.5 MPa.

Synthetic aggregates are fabricated from greater than approximately 70 wt % waste starting materials. Starting materials may be selected from granulated ground blast furnace slag, waste concrete fines, or sewage sludge ash, and mixtures thereof. The starting materials are bound together by a hydraulic cementitious binder either added to the starting materials or formed in situ. The waste starting materials, binder, and water are formed into pellets and subjected to a hydraulic reaction and carbonation in an atmosphere of greater than approximately 50% carbon dioxide at temperatures less than approximately 100 C. The resulting synthetic aggregate has a crush strength after a period of hardening equal to or greater than approximately 0.5 MPa.