Title:
Phosphogypsum-Based Roller Compacted Concrete
Author(s):
Antonio Nanni and Wen F. Chang
Publication:
Concrete International
Volume:
11
Issue:
11
Appears on pages(s):
48-53
Keywords:
calcium sulfates; compressive strength; construction; density (mass/volume); gypsum; joints (junctions); parking facilities; recycling; roller compacted concrete; structural design; thickness; Materials Research
DOI:
Date:
11/1/1989
Abstract:
Reports on a 2000 yd² (1672 m²) surface, 6 in. (127 mm) deep, no-joint parking lot pavement constructed to demonstrate the feasibility of phosphogypsum-based roller compacted concrete. Pavement test results on mechanical properties such as compressive and split-tensile strengths, modulus of elasticity, and abrasion resistance are reported, as are considerations of mix proportions, set retardation, shrinkage, and durability. Three months after its construction, the pavement is still crack-free. This fact and the good quality of the surface prove the project to be very successful