Concrete

Spectrum Details

Modality

NIR

Category

man-made

Material Type

Cement + Gypsum

Sample ID

WTC01-37A

Collection Locality

Fifty meters west of the debris pile created from collapse of the World Trade Center tower 1 on September 18th, 2001.

Spectral Purity

1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Composition / XRD

None # XRF, EPMA, ICP(Trace), WChem

Sample Description

Sample of concrete debris from the World Trade Center Tower 1. Concrete sample is covered in gypsum from WTC debris. It should also be noted that concrete in general can contain small amounts of gypsum although this particular sample appears not to contain any according to the XRD analysis.

XRD Analysis

Quartz (major), albite (major), portlandite (minor), magnesiohornblende (minor), orthoclase (trace), muscovite (trace).

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126