Patent ID: 8557036

Claim:
A method of cementing comprising: providing a settable composition comprising: wollastonite; pumice; a calcium-ion source in an amount in a range of from about 0.1% to about 25% by combined weight of the wollastonite and pumice; and water in an amount in a range of from about 40% to about 200% by combined weight of the wollastonite and pumice; wherein the wollastonite is present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice; and wherein the pumice is present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice; introducing the settable composition into a subterranean formation; and allowing the settable composition to set.