Labour-intensive processes to create maximum employment meant that all components for the 1,176 low-level buildings, prefabricated RC beams and 24 million
hollow concrete blocks were handmade on site.
The material can replace up to 40 percent of the ordinary Portland cement in
hollow concrete blocks without affecting quality.
Approximately (100) 8" x 4" x 16" open-core partition-style
hollow concrete blocksHe has found that the gas permeability of
hollow concrete blocks can vary by as much as a factor of 10 depending on how they were made.