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US 6,042,305 AGranted
Fiber-reinforced soil mixtures
AssigneePPG Industries Ohio, Inc.
InventorsBruce E. Novich, Ali Maher, Jeffrey A. Neubauer
Life of this patent
Estimating the term…
Abstract
The present invention provides semi-solid and reinforced soil mixtures formed from aqueous soil mixtures such as dredge material, discrete reinforcing fibers such as glass fibers. The reinforced mixtures can include additives for partially solidifying the aqueous soil mixture, such as calcium-containing materials, cementitious materials, silicon-containing materials, aluminum-containing materials and mixtures thereof. The pH of the reinforced soil mixture can be adjusted to control deterioration of the reinforcing fibers, as desired.
Claims41
A semi-solid reinforced soil mixture, comprising:
- (a) an aqueous soil mixture comprising:
- (i) about 40 to about 70 weight percent mineral soil on a basis of the total weight of the aqueous soil mixture, consisting of:
- (1) about 1 to about 5 weight percent gravel on a basis of the total weight of the mineral soil;
- (2) about 30 to about 60 weight percent sand on a basis of the total weight of the mineral soil;
- (3) about 30 to about 90 weight percent silt on a basis of the total weight of the mineral soil;
- and
- (4) about 10 to about 50 weight percent clay on a basis of the total weight of the mineral soil;
- (ii) about 1 to about 20 weight percent organic material on a basis of total weight of the aqueous soil mixture;
- and
- (iii) about 10 to about 95 weight percent water on a basis of total weight of the aqueous soil mixture;
- and
- (b) about 0.1 to about 15 weight percent of a plurality of discrete glass reinforcing fibers for reinforcing the semi-solid reinforced soil mixture on a basis of total weight of dry mineral soil.
9 more elements
A semi-solid reinforced soil mixture, comprising:
- (a) an aqueous soil mixture comprising:
- (i) about 40 to about 70 weight percent mineral soil on a basis of the total weight of the aqueous soil mixture, consisting of:
- (1) about 1 to about 5 weight percent gravel on a basis of the total weight of the mineral soil;
- (2) about 30 to about 60 weight percent sand on a basis of the total weight of the mineral soil;
- (3) about 30 to about 90 weight percent silt on a basis of the total weight of the mineral soil;
- and
- (4) about 10 to about 50 weight percent clay on a basis of the total weight of the mineral soil;
- (ii) about 1 to about 20 weight percent organic material on a basis of total weight of the aqueous soil mixture;
- and
- (iii) about 10 to about 95 weight percent water on a basis of total weight of the aqueous soil mixture;
- (b) about 0.1 to about 15 weight percent of a plurality of discrete glass reinforcing fibers for reinforcing the semi-solid reinforced soil mixture on a basis of total weight of dry mineral soil;
- and
- (c) an additive for partially solidifying the aqueous soil mixture to form a semi-solid reinforced soil mixture, wherein the semi-solid reinforced soil mixture has a moisture content ranging from about 1 to about 90 weight percent of the total weight of the semi-solid reinforced soil mixture.
10 more elements
A semi-solid reinforced soil mixture, comprising:
- (a) an aqueous soil mixture comprising:
- (i) about 40 to about 70 weight percent mineral soil on a basis of the total weight of the aqueous soil mixture, consisting of:
- (1) about 1 to about 5 weight percent gravel on a basis of the total weight of the mineral soil;
- (2) about 30 to about 60 weight percent sand on a basis of the total weight of the mineral soil;
- (3) about 30 to about 90 weight percent silt on a basis of the total weight of the mineral soil;
- and
- (4) about 10 to about 50 weight percent clay on a basis of the total weight of the mineral soil;
- (ii) about 1 to about 20 weight percent organic material on a basis of total weight of the aqueous soil mixture;
- and
- (iii) about 10 to about 95 weight percent water on a basis of total weight of the aqueous soil mixture;
- and
- (b) about 0.1 to about 15 weight percent of a plurality of discrete glass reinforcing fibers for reinforcing the semi-solid reinforced soil mixture on a basis of total weight of dry mineral soil;
- and
- (c) an additive for partially solidifying the aqueous soil mixture to form a semi-solid reinforced soil mixture, the additive being selected from the group consisting of calcium-containing materials, cementitious materials, silicon-containing materials, aluminum-containing materials and mixtures thereof, wherein the semi-solid reinforced soil mixture has a moisture content ranging from about 25 to about 75 weight percent of the total weight of the semi-solid reinforced soil mixture.
11 more elements
A semi-solid reinforced soil mixture, comprising:
- (a) a soil mixture, consisting of:
- (i) about 1 to about 5 weight percent gravel on a basis of the total weight of the soil mixture;
- (ii) about 30 to about 60 weight percent sand on a basis of the total weight of the soil mixture;
- (iii) about 30 to about 90 weight percent silt on a basis of the total weight of the soil mixture;
- and
- (iv) about 10 to about 50 weight percent clay on a basis of the total weight of the soil mixture;
- (b) an additive selected from the group consisting of calcium-containing materials, cementitious materials, silicon-containing materials, aluminum-containing materials and mixtures thereof, the additive providing the soil mixture with a pH value greater than 7;
- and
- (c) about 0.1 to about 15 weight percent of a plurality of deterioratable discrete glass reinforcing fibers on a basis of total weight of dry soil mixture which deteriorate when in admixture within the soil mixture at a pH value greater than 7.
6 more elements
A method for temporarily reinforcing a soil mixture, comprising the steps of:
- (a) providing an aqueous mixture comprising:
- (i) about 40 to about 70 weight percent mineral soil on a basis of the total weight of the aqueous soil mixture, consisting of:
- (1) about 1 to about 5 weight percent gravel on a basis of the total weight of the mineral soil;
- (2) about 30 to about 60 weight percent sand on a basis of the total weight of the mineral soil;
- (3) about 30 to about 90 weight percent silt on a basis of the total weight of the mineral soil;
- and
- (4) about 10 to about 50 weight percent clay on a basis of the total weight of the mineral soil;
- (ii) about 1 to about 20 weight percent organic material on a basis of total weight of the aqueous soil mixture;
- and
- (iii) about 10 to about 95 weight percent water on a basis of total weight of the aqueous mixture;
- (b) mixing the aqueous mixture with a plurality of discrete reinforcing fibers to form a reinforced mixture;
- and
- (c) mixing the reinforced mixture with an additive which provides the soil mixture with a pH less than 7, such that the reinforcing fibers deteriorate when in admixture within the soil mixture.
10 more elements
A method for temporarily reinforcing a soil mixture, comprising the steps of:
- (a) providing an aqueous soil mixture comprising:
- (i) about 40 to about 70 weight percent mineral soil on a basis of the total weight of the aqueous soil mixture, consisting of:
- (1) about 1 to about 5 weight percent gravel on a basis of the total weight of the mineral soil;
- (2) about 30 to about 60 weight percent sand on a basis of the total weight of the mineral soil;
- (3) about 30 to about 90 weight percent silt on a basis of the total weight of the mineral soil;
- and
- (4) about 10 to about 50 weight percent clay on a basis of the total weight of the mineral soil;
- (ii) about 1 to about 20 weight percent organic material on a basis of total weight of the aqueous soil mixture;
- and
- (iii) about 10 to about 95 weight percent water on a basis of total weight of the aqueous soil mixture;
- (b) premixing the aqueous soil mixture with an additive;
- and
- (c) mixing the premix of step (b) with a plurality of discrete reinforcing fibers to form a semi-solid reinforced soil mixture, wherein the additive provides the semi-solid reinforced soil mixture with a pH less than 7 such that the reinforcing fibers deteriorate when in admixture with the semi-solid reinforced soil mixture.
10 more elements
A semi-solid reinforced soil mixture, comprising:
- (a) a soil mixture, consisting of:
- (i) about 1 to about 5 weight percent gravel on a basis of the total weight of the soil mixture;
- (ii) about 30 to about 60 weight percent sand on a basis of the total weight of the soil mixture,
- (iii) about 30 to about 90 weight percent silt on a basis of the total weight of the soil mixture;
- and
- (iv) about 10 to about 50 weight percent clay on a basis of the total weight of the soil mixture;
- (b) an additive selected from the group consisting of calcium-containing materials, cementitious materials, silicon-containing materials, aluminum-containing materials and mixtures thereof, the additive providing the soil mixture with a pH value less than 7;
- and
- (c) about 0.1 to about 15 weight percent of a plurality of deterioratable discrete glass reinforcing fibers on a basis of total weight of dry soil mixture which deteriorate when in admixture within the soil mixture at a pH value less than 7.
6 more elements
Dependencies are inferred from the claim text.