IP Library Granted Patent US 7,845,879
Granted Patent B2
US 7,845,879 · App. 12/630,324 · Granted Dec 7, 2010

Soil stabilization method

Assignee: Team Laboratory Chemical Corp.
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Quick Facts
Patent No.
US 7,845,879
App. No.
12/630,324
Granted
Dec 7, 2010
Kind
B2
Abstract

A composition comprises a solution of soluble sodium silicate applied at the disclosed application rate to improve the load bearing capacity for a roadway. The method of the invention addresses the application of the disclosed composition to maximize stabilization of road beds.

Claims (42)

1. A method of full-depth road reclamation comprising:

crushing an existing flexible pavement section and predetermined portion of underlying road bed;

pulverizing the crushed flexible pavement section and predetermined portion of underlying road bed;

uniformly blending the pulverized flexible pavement section and predetermined portion of underlying road bed;

providing a soil stabilizer comprising 28-30 percent silicon dioxide by weight and 8.5-9.5 percent sodium oxide by weight in an aqueous solution; and

applying the soil stabilizer to the uniformly blended flexible pavement section and predetermined portion of underlying road bed in two steps, the steps comprising:

(i) a first step of applying a mixture of the crushed, pulverized, and uniformly blended flexible pavement section and underlying road bed and the soil stabilizer to the road bed at a rate of one gallon of the soil stabilizer per every 42-74 square yards of road surface; and

(ii) a second step of applying the soil stabilizer to the road bed at a rate of one gallon of the soil stabilizer per every 275-700 square yards of road surface.

2. The method of claim 1 wherein the road bed is compacted after each of the steps of applying the soil stabilizer.

3. The method of claim 2 wherein the grade and slope of the road bed is finished before the second step of applying the soil stabilizer.

4. The method of claim 3 wherein the road bed is compacted after the second step of applying the soil stabilizer until the surface of the road bed is dry.

5. The method of claim 4 wherein the soil stabilizer is diluted in a ratio of about one 55-gallon drum of the soil stabilizer per 5,000 gallons of water before the two application steps.

6. The method of claim 1 wherein the providing step comprises providing a soil stabilizer comprising about 28.4 percent silicon dioxide by weight and about 8.7 percent sodium oxide by weight in an aqueous solution.

7. A method of full-depth road reclamation comprising:

crushing an existing flexible pavement section and predetermined portion of underlying road bed;

pulverizing the crushed flexible pavement section and predetermined portion of underlying road bed;

uniformly blending the pulverized flexible pavement section and predetermined portion of underlying road bed;

providing a soil stabilizer comprising silicon dioxide and sodium oxide wherein the average weight ratio of silicon dioxide to sodium oxide is between 3.2 and 3.3; and

applying the soil stabilizer to the uniformly blended flexible pavement section and predetermined portion of underlying road bed in two steps, the steps comprising:

(i) a first step of applying a mixture of the crushed, pulverized, and uniformly blended flexible pavement section and underlying road bed and the soil stabilizer to the road bed at a rate of one pound of the soil stabilizer per every 9-18 square yards of road surface; and

(ii) a second step of applying the soil stabilizer to the road bed at a rate of one pound of the soil stabilizer per every 60-160 square yards of road surface.

8. The method of claim 7 wherein the road bed is compacted after each of the steps of applying the soil stabilizer.

9. The method of claim 7 wherein the soil stabilizer is diluted in water before the steps of applying the soil stabilizer.

10. The method of claim 9 wherein the grade and slope of the road bed is finished before the second step of applying the soil stabilizer.

11. The method of claim 10 wherein the road bed is compacted after the second step of applying the soil stabilizer until the surface of the road bed is dry.

12. The method of claim 7 wherein the providing step comprises providing a soil stabilizer comprising about 28.4 percent silicon dioxide by weight and about 8.7 percent sodium oxide by weight in an aqueous solution.

13. A method of full-depth road reclamation comprising:

crushing an existing flexible pavement section and predetermined portion of underlying road bed;

pulverizing the crushed flexible pavement section and predetermined portion of underlying road bed;

uniformly blending the pulverized flexible pavement section and predetermined portion of underlying road bed;

providing a soil stabilizer comprising 28-30 percent silicon dioxide by weight and 8.5-9.5 percent sodium oxide by weight in an aqueous solution; and

applying the soil stabilizer to the uniformly blended flexible pavement section and predetermined portion of underlying road bed at a rate of about 0.005 gallons of the soil stabilizer per square yard per inch thickness of road bed.

14. A kit for full-depth road reclamation comprising:

a soil stabilizer comprising 28-30 percent silicon dioxide by weight and 8.5-9.5 percent sodium oxide by weight in an aqueous solution; and

instructions for a method of full-depth road reclamation, the method comprising:

(i) crushing an existing flexible pavement section and predetermined portion of underlying road bed;

(ii) pulverizing the crushed flexible pavement section and predetermined portion of underlying road bed;

(iii) uniformly blending the pulverized flexible pavement section and predetermined portion of underlying road bed;

(iv) providing a soil stabilizer comprising 28-30 percent silicon dioxide by weight and 8.5-9.5 percent sodium oxide by weight in an aqueous solution; and

(v) applying the soil stabilizer to the uniformly blended flexible pavement section and predetermined portion of underlying road bed in two steps, the steps comprising:

(a) a first step of applying a mixture of the crushed, pulverized, and uniformly blended flexible pavement section and underlying road bed and the soil stabilizer to the road bed at a rate of one gallon of the soil stabilizer per every 42-74 square yards of road surface; and

(b) a second step of applying the soil stabilizer to the road bed at a rate of one gallon of the soil stabilizer per every 275-700 square yards of road surface.

Assignments (5)
CORRECTIVE ASSIGNMENT TO CORRECT THE CORRECT THE ASSIGNEE NAME PREVIOUSLY RECORDED AT REEL: 019226 FRAME: 0642. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Dec 19, 2019
From: MAIER, TERRY L.
To: LAKER CHEMICAL, INC.
Reel/Frame 052002/0729 →
SECURITY INTEREST Recorded Oct 2, 2019
From: TEAM LABORATORY CHEMICAL, LLC
To: SUNFLOWER BANK, N.A.
Reel/Frame 050601/0358 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Oct 2, 2019
From: TEAM LABORATORY CHEMICAL, LLC
To: PLEXUS FUND IV-A, L.P., AS ADMINISTRATIVE AGENT
Reel/Frame 050611/0639 →
NUNC PRO TUNC ASSIGNMENT Recorded Sep 30, 2019
From: LAKER CHEMICAL, INC. (D/B/A "TEAM LABORATORY CHEMICAL CORPORATION", "TEAM LABORATORY CHEMICAL CORP." AND "TEAM LAB")
To: TEAM LABORATORY CHEMICAL, LLC
Reel/Frame 050562/0790 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 31, 2009
From: MAIER, TERRY L.
To: TEAM LABORATORY CHEMICAL CORP.
Reel/Frame 023725/0028 →
Continuity (3)
Division 1173238800 · Apr 3, 2007
Provisional Application 6078964000 · Apr 6, 2006
Related Publication 20100080654A1 · Apr 1, 2010