The Hidden Science of Strong Roads скачать в хорошем качестве

The Hidden Science of Strong Roads

You are using *Class 2 material* as a cemented material. For a target elastic modulus **E = 2000 MPa**, the typical cement content required is about **3–4% by mass of dry material**. This comes from practice, where: Class 1 crushed rock: 2.5–3.5% cement for 2000–3000 MPa Class 2 natural gravel: 3–4% cement for 1500–2500 MPa Fine gravels: 4–5% cement for 1500–2200 MPa 👉 So, to reach *2000 MPa* with Class 2 material, expect **\~3–4% cement content**. Final confirmation should come from *lab mix design testing* (UCS \~1.0–1.5 MPa at 7 days).