00930578

Component

https://doi.org/10.3141/1787-04

http://scholar.google.com...rand&publication_year=2002

Stabilization of pavement subgrade soils and base materials has traditionally relied on treatment with lime, cement, and sometimes fly ash. Marketed as alternatives to these conventional bulk soil stabilizers, a variety of concentrated liquid chemical products are sold by several companies. Most transportation agencies, however, are hesitant to specify these nontraditional liquid stabilizers without reliable data to support vendor claims of product effectiveness. Standard laboratory soil tests were conducted to measure changes in the engineering properties of five clay soils when treated with three liquid chemical products. The tests involved three reference clays (kaolinite, illite, montmorillonite), two high-plasticity natural clays, and three representative liquid stabilizers (ionic, polymer, enzyme types). Tests were conducted on untreated control soil samples and on samples treated with each product at the suppliers' recommended application rates. All of the test specimens were prepared in accordance with a specified 10-step protocol that allowed objective comparisons of the test results. Each treated and untreated soil was characterized in terms of the Atterberg limits, compacted unit weight, one-dimensional free swell potential, and undrained triaxial shear strength. Given some variation in the test samples, the test results did not show consistent, significant changes in the properties of these soils as a result of treatment with these three products. Higher application rates might yield more favorable results. Clearly, independent laboratory evaluations with project-specific soils are warranted before the use of these proprietary liquid stabilizers in the field.

This paper appears in Transportation Research Record No. 1787, Geomaterials 2002.

English

p. 33-41

2002

Transportation Research Record

0309077125

Figures (7) ; References (17) ; Tables (3)

Atterberg limits; Base course (Pavements); Clay soils; Laboratory tests; New products; Shear strength; Soil stabilization; Soil tests; Subgrade (Pavements); Swelling index; Weight

Liquid chemical stabilizers

Geotechnology; Highways; I42: Soil Mechanics

TRIS, TRB, ATRI

Sep 18 2002 12:00AM

• COLD IN-PLACE RECYCLING AND FULL-DEPTH STRENGTHENING OF CLAY-TILL SUBGRADE SOILS: RESULTS WITH CEMENTITIOUS WASTE PRODUCTS IN NORTHERN CLIMATES
• EFFECT OF WET-DRY CYCLES ON RESILIENT MODULUS OF CLASS C COAL FLY ASH-STABILIZED AGGREGATE BASE
• EFFECTS OF GRADATION, COMPOSITION, AND DEGREE OF COMPACTION ON THE MECHANICAL CHARACTERISTICS OF RECYCLED UNBOUND MATERIALS
• EFFECTS OF PARTICLE AND MIX CHARACTERISTICS ON PERFORMANCE OF SOME GRANULAR MATERIALS
• FEASIBILITY OF GEOSYNTHETIC INCLUSION FOR REDUCING SWELLING OF EXPANSIVE SOILS
• INVESTIGATION OF RECYCLED CONCRETE MADE WITH LIMESTONE AGGREGATE FOR A BASE COURSE IN FLEXIBLE PAVEMENT
• LABORATORY TESTING OF SUCTION AND DEFORMATION PROPERTIES OF BASE COURSE AGGREGATES
• PRECRACKING OF SOIL-CEMENT BASES TO REDUCE REFLECTION CRACKING: FIELD INVESTIGATION
• QUANTIFICATION OF COARSE AGGREGATE ANGULARITY BASED ON IMAGE ANALYSIS
• STABILIZATION OF SILTY SAND WITH NONTRADITIONAL ADDITIVES
• STABILIZING FINE-GRAINED SOILS BY PHOSPHATE ELECTROGROUTING
• WAVELET-BASED THREE-DIMENSIONAL DESCRIPTORS OF AGGREGATE PARTICLES