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A solution you can stamp

Your top concern is professional liability: a material only matters if it is designable within your code framework and backed by traceable data. LL-TEQ™ was built for the engineering file.

LL-TEQ-stabilized recycled base layer — texture detail

Designable, not merely "high-performing"

a₂ = 0.21–0.30 — USABLE DIRECTLY IN AASHTO 1993

The AASHTO 1993 structural layer coefficient of the LL30-stabilized base (LL-TM-2026-002) drops straight into AASHTO 1993 design. You design with your usual parameters (SN, aᵢ, Mr).

Your top concern

Reproducible, signed, defensible data

You do not need a promise — you need a chain of evidence. LL-TEQ™ structural values come from ASTM/AASHTO protocols run by independent laboratories, over several years and soil categories, and every numerical value is signed under the professional responsibility of the engineer of record. The design stays yours: the design value always comes from project-specific testing.

a₂ 0.21–0.30AASHTO 1993 layer coefficient (LL-TM-2026-002)
1,310–3,705 PSI16 specimens · 2 labs · 7 years (ASTM C39/C42)
k ≈ 5.99 × 10⁻⁸ cm/shydraulic conductivity (ASTM D5084)
License No. 1349Engineer of record — Kahiigi Raymond

Deployed in sensitive environments

Used near bays, rivers, forests and farmland

Since 2012, the technology has been deployed across 39 countries — including coastal zones, marine environments, farmland, forested areas, and protected biodiversity habitats. The Ravenswood Trail (Menlo Park, California, May 2024) was built directly along the edge of San Francisco Bay, inside a nature reserve. The UNRA pilot project (Lira, Uganda, April 2012) has been monitored under tropical high-rainfall conditions for several years — still in service.

What the technical file contains

Everything needed to justify your selection

Normative framework

Testing under ASTM D698/D1557 (Proctor), D1883 (CBR), C39/C42 (compression), D5084 (permeability), D4318, D2487, D2435; AASHTO T193. Bridge to AASHTO 1993 documented (LL-ENG-LTR-2026-CA-001).

Reproducibility

Corrected UCS 1,310–3,705 PSI across 16 specimens, 2 independent labs, 7 years (2016–2023), 3 soil categories, 1–4% dosages — not a single isolated test.

Designed-in repairability

Saw-cut repair and utility-trench reinstatement protocol on cured slab (LL-TM-2026-003); full-depth re-stabilization of cured material (LL-TM-2026-004).

CH-53 heavy-lift helicopter and Marine formation on a stabilized pad

Validated under real loads

CERTIFIED UNDER THE PCASE 2.09 MILITARY FRAMEWORK

DCP/CBR bearing evaluations under PCASE 2.09 (UFC 3-260-02): Mocoron (Honduras) — C-130 at 155,000 lb: 23,847 passes; C-17 at 450,000 lb: 2,470 passes. ALZ Sandhill — KC-130J at 175,000 lb: 10,000+ passes, surface CBR ≥ 60. The same material, accepted by engineers under U.S. federal authority.

Structural mechanics

A bound slab, not a floating surface

The polymer integrates and binds the wearing course and base into a unified slab. Hydraulic conductivity k ≈ 5.99 × 10⁻⁸ cm/s (ASTM D5084) limits water ingress — hence the driver of crazing and frost heave under our thermal cycles. The mechanism is substrate-independent, subject to preconditions (CBR ≥ 40, no organics, Dmax ≤ 80 mm, unfrozen soil).

LL-TEQ reclaimer with water supply — in-place polymer integration

Request the full technical file

ASTM/AASHTO test reports, LL-TM-2026 memoranda, a₂ derivation, and AASHTO 1993 design notes — provided to engineering firms on request.

Contact LL-TEQ™ See the documentation