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X-ORIGINAL-URL:https://texascecon.org/
X-WR-CALNAME:CECON 2026
X-WR-CALDESC:Revitalizing Resiliency
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DTSTART:20260308T030000
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DTSTART:20261101T010000
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CLASS:PUBLIC
UID:MEC-d90e5b6628b4291225cba0bdc643c295@texascecon.org
DTSTART;TZID=America/Chicago:20260918T103000
DTEND;TZID=America/Chicago:20260918T113000
DTSTAMP:20260617T152900Z
CREATED:20260617
LAST-MODIFIED:20260617
PRIORITY:5
SEQUENCE:2
TRANSP:OPAQUE
SUMMARY:High-PI Stabilization for Concrete Pavement Performance
DESCRIPTION:Concrete pavements are widely recognized for their structural capacity and long service life; however, long-term performance is fundamentally dependent on uniform and stable foundation support. Expansive, highly plastic clays (PI ≥ 35) contribute to differential movement, moisture-driven distress, and reduced pavement reliability, underscoring the importance of effective subgrade stabilization in resilient pavement systems.\nThis presentation provides a concrete pavement performance overview with emphasis on foundation engineering and soil treatment strategies. It then examines recent research evaluating the stabilization of low-, medium-, and high-PI soils using cement (Type I/II and IL), lime, and combined lime–cement treatment. Laboratory testing included Atterberg limits, moisture–density relationships, unconfined compressive strength (UCS) under soaked and non-soaked conditions, and CBR, LWD, and DCP to assess strength development, plasticity reduction, and swell mitigation.\nResults indicate that highly plastic clays can be effectively treated with cement, and that as plasticity increases, combined lime–cement stabilization may provide enhanced reductions in PI and swell while maintaining strength. The findings support performance-based stabilization approaches and encourage broader consideration of treatment options to improve foundation uniformity, manage risk, and enhance the long-term performance of concrete pavement systems.\n
URL:https://texascecon.org/cecon/high-pi-stabilization-for-concrete-pavement-performance/
CATEGORIES:General Breakout,Sessions
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