Settable compositions comprising interground perlite and hydraulic cement
First Claim
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1. A composition consisting of:
- an interground mixture consisting of unexpanded perlite and Portland cement,wherein the interground mixture has a mean particle size between about 0.5 microns and about 10 microns,wherein the perlite is present in an amount of about 40% to about 80% by weight of the perlite and Portland cement,wherein the Portland cement is present in an amount of about 20% to about 60% by weight of the perlite and Portland cement; and
a hydraulic cement blended with the interground mixture.
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Abstract
Methods and compositions are disclosed that comprise interground perlite and hydraulic cement. An embodiment provides a composition comprising interground perlite and hydraulic cement. Another embodiment provides a composition comprising: interground unexpanded perlite and Portland cement, the interground having a mean particle size of about 0.5 microns to about 10 microns; and water.
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Citations
18 Claims
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1. A composition consisting of:
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an interground mixture consisting of unexpanded perlite and Portland cement, wherein the interground mixture has a mean particle size between about 0.5 microns and about 10 microns, wherein the perlite is present in an amount of about 40% to about 80% by weight of the perlite and Portland cement, wherein the Portland cement is present in an amount of about 20% to about 60% by weight of the perlite and Portland cement; and a hydraulic cement blended with the interground mixture. - View Dependent Claims (2, 8, 18)
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3. A method of preparing a composition comprising:
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intergrinding components consisting of unexpanded perlite and Portland cement to form an interground mixture, wherein the perlite is present in an amount of about 40% to about 80% by weight of the perlite and Portland cement, and wherein the Portland cement is present in an amount of about 20% to about 60% by weight of the perlite and Portland cement; and combining the interground mixture with at least one component comprising water to form the composition, wherein the water is present in an amount of about 100 percent to about 200 percent by weight of cementitious components present in the composition. - View Dependent Claims (4, 5, 6, 7, 12, 13, 14)
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9. A method of preparing a composition comprising:
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intergrinding components consisting of unexpanded perlite and Portland cement to form an interground mixture, wherein the interground mixture has a bimodal particle size distribution with a first peak from about 1 microns to about 7 microns and a second peak from about 7 microns to about 15 microns, wherein the interground mixture has mean particle size between about 0.5 microns and about 10 microns, wherein the perlite is present in an amount of about 40% to about 80% by weight of the perlite and Portland cement, and wherein the Portland cement is present in an amount of about 20% to about 60% by weight of the perlite and Portland cement; blending the interground mixture with hydraulic cement to form a mixture; and combining the mixture with at least water to form the composition, wherein the water is present in an amount of about 100 percent to about 200 percent by weight of cementitious components present in the composition, wherein the composition has a density of about 8 pounds per gallon to about 13 pounds per gallon. - View Dependent Claims (10, 11)
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15. A composition consisting of:
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an interground mixture consisting of unexpanded perlite and Portland cement, wherein the interground mixture has a mean particle size between about 0.5 microns and about 10 microns, wherein the perlite is present in an amount of about 40% to about 80% by weight of the perlite and Portland cement, wherein the Portland cement is present in an amount of about 20% to about 60% by weight of the perlite and Portland cement; a hydraulic cement blended with the interground mixture; and at least one additive selected from the group consisting of a set retarding additive, a strength-retrogression additive, a set accelerator, a weighting agent, a lightweight additive, a gas-generating additive, a mechanical property enhancing additive, a lost-circulation material, a filtration-control additive, a dispersant, a fluid loss control additive, a defoaming agent, a foaming agent, an oil-swellable particle, a water-swellable particle, a thixotropic additive, and any combination thereof. - View Dependent Claims (16, 17)
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Specification