00930576

Component

https://doi.org/10.3141/1787-02

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

A laboratory study was undertaken to investigate the effect of wet-dry (W-D) cycles on low-quality aggregates stabilized with Class C coal fly ash (CFA). Resilient modulus (M sub r), unconfined compressive strength, and elastic modulus were used to evaluate this effect. Cylindrical specimens stabilized with 10% CFA, cured for 3 and 28 days, and subjected to different W-D cycles were tested. The M sub r values of 28-day-cured specimens increased as W-D cycles increased up to 12, beyond which a reduction was observed. For 3-day-cured specimens, M sub r increased with the number of W-D cycles. W-D action produced a greater detrimental effect on 28-day-cured specimens than on 3-day-cured specimens. The M sub r values of 28-day-cured specimens subjected to 30 cycles were approximately 5% lower than the corresponding M sub r values of specimens without any W-D cycles. The M sub r values of 3-day-cured specimens subjected to 30 W-D cycles, however, increased approximately 55% compared with the corresponding M sub r values of specimens with no W-D cycles. Also, it was found that 12 to 30 W-D cycles could be considered adequate to have a noticeable negative effect on 28-day-cured specimens; however, more than 30 cycles are needed for 3-day-cured specimens. Additionally, the positive effect of curing time was more dominant on 3-day-cured specimens, and the detrimental effect of W-D cycles was more influential on 28-day-cured specimens.

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

English

p. 13-21

2002

Transportation Research Record

0309077125

Figures (6) ; Photos (1) ; References (17) ; Tables (4)

Aggregates; Base course (Pavements); Fly ash; Laboratory studies; Modulus of resilience; Soil stabilization; Wetting and drying tests

Curing time

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
• 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
• MEASURED EFFECTS OF LIQUID SOIL STABILIZERS ON ENGINEERING PROPERTIES OF CLAY
• 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