High-density cube-shaped crushed stone fraction 5-20 mm
Our 5–20 mm diabase crushed stone is a universally popular aggregate, prized for its use in high-strength concrete mixes and road construction. This intermediate-size fraction combines fine and medium gravel, resulting in well-graded aggregate that enhances mix density and structural performance. Contractors across Kazakhstan rely on 5–20 mm diabase for its balance of workability and strength in critical projects. Request a cost quote by filling out the form with your destination station. We ship directly from our quarry by rail to any location – from Aktobe to Atyrau, Mangystau to Uralsk – including key industrial hubs like Kulsary, Tengiz, and Karachaganak. You can count on efficient delivery to even the most remote sites.
Properties and Applications of 5-20 mm fraction:
Our 5–20 mm crushed stone offers versatile properties that make it one of the most sought-after fractions in construction. It consists of hard diabase rock graded between 5 and 20 mm, with a predominantly cubical shape due to modern crushing techniques. This gives the aggregate low flakiness and high interlock, which improves the stability of concrete and asphalt mixtures. The material’s strength and durability are reflected in its technical specs: M1400 strength class, Category I-1 abrasion resistance, and F300 frost resistance – meaning it can endure heavy loads and harsh freeze-thaw cycles without breaking down. Essentially, 5–20 mm diabase provides the reliability of a granite-class aggregate (diabase is an extremely hard, tough igneous rock, comparable to granite) in a very workable size range.
This fraction’s broad gradation (from fine gravel up to 20 mm) yields a well-packed aggregate matrix. In concrete, having a mix of smaller and mid-sized stones minimizes voids and requires less cement paste, which results in higher strength and reduced shrinkage. In asphalt, the 5–20 mm size ensures a dense grain structure for durability while still achieving good compaction.
Common uses of 5–20 mm diabase include:
Ready-mix and high-strength concrete: 5–20 mm is one of the most in-demand aggregates for concrete production. It’s used in everything from heavy-duty foundation slabs and columns to precast concrete products. The fraction’s mix of particle sizes helps produce concrete with excellent compressive strength and stability, suitable for multistory building frames and industrial structures.
Asphalt pavement layers: This aggregate is widely used in asphalt concrete for highways and airfield runways. It provides a strong skeleton in the asphalt, and the variety of particle sizes (5–20 mm all in one) contributes to a well-compacted, load-resistant pavement. Road bases and surface courses often include 5–20 mm diabase to maximize durability under traffic.
Foundations and infrastructure works: When pouring large foundations (e.g., for residential buildings, warehouses, or bridge abutments), using 5–20 mm crushed stone ensures the concrete can be placed and vibrated around rebar while delivering high strength. It’s also used in bridge deck concrete and other infrastructure elements where a dependable, high-strength aggregate is required.
Beyond its applications, business advantages set our diabase apart. The cube-shaped, clean nature of the stones means better compaction and bonding, translating to fewer voids and higher structural integrity in your projects. Each batch is quality-tested and compliant with industry standards, so you can trust the consistency for mix designs. By purchasing 5–20 mm aggregate straight from our quarry, you benefit from competitive pricing and reliable supply. We coordinate bulk rail shipments to align with your construction schedule, preventing delays. From oil & gas construction to civil infrastructure, this versatile fraction gives engineers and project managers the confidence of using a proven, high-performance aggregate every time.