Title: Proportioning for Non-Air-Entrained RCCP

Author(s): Richard Gagne

Publication: Concrete International

Volume: 21

Issue: 5

Appears on pages(s): 37-41

Keywords: aggregate gradation; compressive strength; durability; mix proportioning; pavements; roller compacted concrete; workability

DOI:

Date: 5/1/1999

Abstract:
The optimal paste volume method can be used to design non-air-entrained roller-compacted concrete for pavement (RCCP) mixtures having a wide range of compressive strengths of 35 MPa (5000 psi) to more than 60 MPa (8700 psi) at 28 days. It includes three major steps. The first step is to select an aggregate grading that contains a minimal volume of voids for a given compaction energy. The next step consists in adjusting the volumetric dosage of paste to obtain the required workability. The third step involves selecting the water/binder ratio (W/B) of the paste and the proportions of cement and mineral admixture to produce a paste with enough binding capacity to satisfy the strength requirements.