compressive_properties2: Estimation of compressive properties by Keller and Arvidsson... In soilphysics: Soil Physical Analysis

Description

It calculates the compressive parameters N and lambda using the pedo-transfer function from Keller and Arvidsson (2007)

Usage

 ```1 2``` ``` compressive_properties2(particle.density, bulk.density) ```

Arguments

 `particle.density` a numeric vector containing the values of particle density, Mg m^{-3} `bulk.density` a numeric vector containing the values of bulk density, Mg m^{-3}

Details

In Keller and Arvidsson (2007), the recompression index, kappa, was found as 0.042 for all soil.

Value

 `N` the specific volume at p = 1 kPa, N `CI` the compression index, lambda

Author(s)

Renato Paiva de Lima <renato_agro_@hotmail.com> Anderson Rodrigo da Silva <anderson.agro@hotmail.com>

References

Keller, T., Arvidsson, J., 2007. Compressive properties of some Swedish and Danish structured agricultural soils measured in uniaxial compression tests. European Journal of Soil Science , 58: 1373-1381.

`stressTraffic`
 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13``` ```# EXAMPLE 1 compressive_properties2(particle.density=2.65, bulk.density=1.5) # EXAMPLE 2 BD <- seq(from=1.2,to=1.8, by=0.01) # range of bulk density from 1.2 to 1.8 out <- compressive_properties2(particle.density=2.65, bulk.density=BD) plot(x=BD,y=out\$N, ylab="N", xlab="Bulk density") # for N plot(x=BD,y=out\$CI, ylab="Compression index (CI)", xlab="Bulk density") # for compression index # End (not run) ```