Cement and concrete compositions for controlling alkali-silica reaction in concrete

A cement which stabilizes concrete against alkali-silica reactivity (ASR) from alkali containing components produced by a process which comprises:

• heating a mixture of cement starting materials and lithium bearing ores for a time and temperature sufficient to chemically react the cement starting materials and incorporate the lithium bearing ores, thus forming a cement clinker, wherein the lithium bearing ores are present in an amount sufficient to minimize ASR in the concrete.

A cement which stabilizes concrete against alkali-silica reactivity (ASR) from alkali containing components produced by a process which comprises:

• heating a mixture of cement starting materials and lithium salts for a time and temperature sufficient to chemically react the cement starting materials and incorporate the lithium salts, thus forming a cement clinker, wherein the lithium salts are present in an amount sufficient to minimize ASR in the concrete.

A concrete stabilized against alkali-silica reactivity (ASR) from alkali containing components produced by a process which comprises:

• mixing together cement, aggregate and water, said cement being produced by heating a mixture of cement starting materials and lithium containing materials for a time and temperature sufficient to chemically react the cement starting materials and incorporate the lithium containing materials, wherein the lithium containing materials are present in an amount sufficient to minimize ASR in the concrete.

A concrete stabilized against alkali-silica reactivity (ASR) from alkali containing components produced by a process which comprises:

• mixing together cement, aggregate and water, said cement being produced by heating a mixture of cement starting materials and lithium bearing ores for a time and temperature sufficient to chemically react the cement starting materials and incorporate the lithium bearing ores, wherein the lithium bearing ores are present in an amount sufficient to minimize ASR in the concrete.

A concrete stabilized against alkali-silica reactivity (ASR) from alkali containing components produced by a process which comprises:

• mixing together cement, aggregate and water, said cement produced by heating a mixture of cement starting materials and lithium salts for a time and temperature sufficient to chemically react the cement starting materials and incorporate the lithium salts, wherein the lithium salts are present in an amount sufficient to minimize ASR in the concrete.

Cement comprising a plurality of crystalline phases, at least some of said crystalline phases comprising lithium as a component thereof.

Concrete comprising cement, said cement comprising a plurality of crystalline phases, at least some of said crystalline phases comprising lithium as a component thereof.

A cement starting material comprising a lithium containing material and at least one material selected from the group consisting of carbonates, silica, clays, shales, slates, and mixtures thereof, wherein the lithium containing material is present in an amount sufficient to minimize ASR in concrete.