AP65 is a coarse, high‑strength basecourse aggregate designed for major structural foundations, deep fill, roading projects, and heavy‑traffic areas. With particles up to 65mm, AP65 provides exceptional load‑bearing strength and stability, making it ideal for commercial sites, rural machinery yards, forestry accessways, and large‑scale earthworks. Its coarse grading allows excellent drainage and ground stabilisation, especially on soft or wet soils.
Why AP65 Is Used for Big Jobs
AP65 sits at the largest end of New Zealand’s All Particles (AP) grading system. Its large stone size creates a strong, interlocking base that resists movement, rutting, and pumping under extreme pressure. Contractors choose AP65 when they need a foundation that can support heavy trucks, diggers, loaders, tractors, and industrial equipment.
AP65 is also widely used to stabilise weak ground. Its coarse structure allows water to move through freely, reducing bogging and improving long‑term performance. When topped with AP40 or AP20, AP65 forms a multi‑layer system suitable for high‑traffic driveways, commercial yards, and roading projects.
Typical Uses
Benefits of AP65
Performance & Durability
AP65 is engineered for demanding environments where strength and stability are essential. Its coarse structure provides unmatched durability, making it suitable for trucking depots, mechanical workshop yards, forestry roads, and commercial foundations. When compacted correctly, AP65 forms a long‑lasting base that withstands constant pressure and harsh weather conditions.
Product Specifications
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