Summary of measured R and C-values of plastered straw bale walls.
|Study||Procedure||Wall thickness [m]||Orientation of fibres||C-value [W/ m2K]||Comments|
|Watts (1995)||Heat flow monitoring||0.467||Parallel||0.2||–|
|Christian (1996)||Guarded hot box, full wall, to ASTM C236||0.47||Parallel||0.33||Deficiencies on the sample have been noted. The test was conducted again in 1998|
|Stone (1997)||Guarded hot box, full wall, to ASTM C236||n/a||Perpendicular||0.172||Not reliable results: the test was stuffed with loose straw to cover gaps and the was performed before the plaster completely dried off|
|Christian (1998)||Guarded hot box, full wall, to ASTM C236||0.483||Parallel||0.206||–|
|Wimmer (2000)||n/a||0.42||n/a||0.12||Method and fibres orientation in unknown|
|Andersen (2001)||Hot box, full wall, to ISO 8990||0.461||Parallel||0.203||Problems occurred during the tests. Values cannot be reliable|
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