Application of Microbial Biopolymers as an Alternative Construction Binder for Earth Buildings in Underdeveloped Countries

Table 3

Design criteria for earthen structures.

Design criteria	BS EN 1996-3^1	BS EN 771-1^2	IBC 2012^3
Minimum compressive strength [MPa]	2 MPa (for 10% cement : soil); 6 MPa (for 20% cement : soil)	5 MPa (soil brick)	2 MPa (rammed earth brick)

Eurocode 6: design of masonry structures (standard compressive strength for 100 mm × 100 mm × 100 mm cube).
²Specification for compacted clay masonry units (compressive strength of 337.5 mm × 112.5 mm × 112.5 mm brick).
³International Building Code (IBC), International Code Council (ICC) 2012.