Non-aqueous, hydraulic cement-forming compositions comprise a non-aqueous mixture of (a) a non-hydrated powder composition comprising calcium aluminate powder, and (b) non-aqueous water-miscible liquid. Hardened cements are formed from such hydraulic cement-forming compositions, and methods of producing hardened cements, kits, and articles of manufacture employ such hydraulic cement-forming compositions.

Compounds for stimulating bone formation are provided. The compound consists of a paste or similar material with viscous properties that can be coated on and spread over bone tissue and other surfaces of interest, wherein the compound contains Mg and at least one of the elements Ca, Mn and Zn, and wherein Mg constitutes at least 75 percent by weight of the total quantity of Mg, Ca, Mn and Zn in the compound. Methods for stimulating bone formation, medical kits, and methods for manufacturing the compound are also provided.

The present disclosure is directed to a bioresorbable ceramic composition having a plurality of biocompatible ceramic granules, each of the granules having a coating of a plurality of calcium containing particles, where at least a portion of the particles are bound to at least a portion of an outer surface of each of the granules, and further where the composition is flowable in a dry state. The present disclosure is also directed to a three dimensional scaffold for bone repair that includes the bioresorbable composition, which upon implantation to a locus of repair defines an interconnected pore network between outer walls of the coated granules of the composition. Finally, the present disclosure is directed to methods of forming both the bioresorbable ceramic composition and the three-dimensional ceramic scaffold.

Methods and compositions are provided that related to cementing operations. Methods and compositions that include pumice and/or perlite as a replacement for fly ash.

This invention relates to a macroporous cement composition suitable for use as a bone void filler. The macroporous cement composition comprises hydroxyapatite and -calcium pyrophosphate. The porosity of the composition is 60-80 vol %. The invention also relates to methods of manufacturing such a macroporous cement composition and a putty formulation comprising such a macroporous cement composition.

Methods and compositions are provided that related to cementing operations. Methods and compositions that include pumice and/or perlite as a replacement for fly ash.

A composition and process for the manufacture thereof for use in a hybrid building material comprising at least in part Syngenite (K.sub.2Ca(SO.sub.4).sub.2.H.sub.2O) and Struvite-K (KMgPO.sub.4.6H.sub.2O). Specified constituents, including magnesium oxide (MgO), monopotassium phosphate (MKP) and stucco (calcium sulfate hemihydrate) are mixed in predetermined ratios and the reaction proceeds through multiple phases reactions which at times are proceeding simultaneously and in parallel and reaction may even compete with each other for reagents if the Struvite-K reaction is not buffered to slow down the reaction rate). A number of variable factors, such as water temperature, pH mixing times and rates, have been found to affect resultant reaction products. Preferred ratios of chemical constituents and manufacturing parameters, including predetermined and specified ratios of Struvite-K and Syngenite may be provided for specified purposes, optimized in respect of stoichiometry to reduce the combined heat of formation to non-destructive levels.

Non-aqueous hydraulic cement compositions comprise a non-aqueous mixture of (a) a non-hydrated powder composition comprising calcium silicate powder or calcium aluminate powder, and (b) non-aqueous water-miscible liquid. Hardened cements are formed from such hydraulic cement compositions, and methods of producing hardened cements, kits, and articles of manufacture employ such hydraulic cement compositions.

Non-aqueous hydraulic cement compositions comprise a non-aqueous mixture of (a) a non-hydrated powder composition comprising calcium silicate powder or calcium aluminate powder, and (b) non-aqueous water-miscible liquid. Hardened cements are formed from such hydraulic cement compositions, and methods of producing hardened cements, kits, and articles of manufacture employ such hydraulic cement compositions.

The invention relates to a refractory dry vibratable mix which sets at room temperature when water is added, for use in metallurgical vessels and comprising a refractory main component, a binder and a retarder.