ČSN EN 13170+A1 - Tepelněizolační výrobky pro budovy - Průmyslově vyráběné výrobky z expandovaného korku (ICB) - Specifikace

3.1.10 multi-layered insulation product

αp

is the practical sound absorption coefficient

—

αw

is the weighted sound absorption coefficient

—

b

is the width

mm

c

is the compressibility

mm

d

is the thickness under a load of (250 ± 5) Pa

mm

dB

is the thickness under a load of 2 kPa after removal of an additional load of 48 kPa

mm

dL

is the thickness under a load of 250 Pa

mm

dN

is the nominal thickness of the product

mm

dS

is the thickness of the test specimen

mm

Δεb

is the relative change in width

%

Δεd

is the relative change in thickness

%

Δεl

is the relative change in length

%

Δεs

is the relative change in flatness

mm/m

ε

is the deformation under specified compressive load and temperature

mm

εct

is the compressive creep

%

εt

is the total relative thickness reduction

%

Fp

is the compressive force at critical point

kN

H

is the moisture content

%

k

is a factor related to the number of test results available

—

l

is the length

mm

λ90/90

is the 90 % fractile with a confidence level of 90 % for the thermal conductivity

W/(m⋅K)

λD

is the declared thermal conductivity

W/(m⋅K)

λi

is one test result of thermal conductivity

W/(m⋅K)

λmean

is the mean thermal conductivity

W/(m⋅K)

λU

is the design thermal conductivity

W/(m⋅K)

n

is the number of test results

—

R90/90

is the 90 % fractile with a confidence level of 90 % for the thermal resistance

m2⋅K/W

RD

is the declared thermal resistance

m2⋅K/W

Ri

is one test result of thermal resistance

m2⋅K/W

Rmean

is the mean thermal resistance

m2⋅K/W

RU

is the design thermal resistance

m2⋅K/W

ρa

is the apparent density

kg/m3

Sb

is the deviation from squareness on length and width

mm/m

Sd

is the deviation from squareness on thickness

mm

Smax

is the deviation from flatness

mm

X0

is the initial deformation

%

Xt

is the total thickness reduction

%

Xct

Is the compressive creep

%

sR

is the estimate of the standard deviation of the thermal resistance

m2⋅K/W

sλ

is the estimate of the standard deviation of the thermal conductivity

W/(m⋅K)

s′

is the dynamic stiffness

MN/m3

σ10

is the compressive stress at 10 % deformation

kPa

σb

is the bending strength

kPa

σc

is the declared compressive stress (for compressive creep)

kPa

σmt

is the tensile strength perpendicular to faces

kPa

Wp

is the short-term water absorption

kg/m2

τ

is the shear strength

kPa

Z

is the water vapour resistance

m2⋅h⋅Pa/mg

AFr

is the symbol of the declared level of air flow resistivity

AP

is the symbol of the declared level of practical sound absorption coefficient

AW

is the symbol of the declared level of weighted sound absorption coefficient

CC(i1/i2/y) σc

is the symbol of the declared level for compressive creep

CP

is the symbol of the declared level for compressibility

CS(10)

is the symbol of the declared level for compressive stress at 10 % deformation

DS(23,90) or DS(70,90)

is the symbol of the level for dimensional stability under specified temperature and humidity conditions

DS(70,-)

is the symbol of the declared value for dimensional stability at specified temperature

DLT

is the symbol of the declared value for the deformation under specified load and temperature

L

is the symbol of the declared class for length tolerances

MU

is the symbol of the declared value for water vapour diffusion resistance factor

PL(P)

is the symbol of the declared level of point load at the critical point

SD

SS

is the symbol of the declared level for dynamic stiffness

is the symbol of the declared value for shear strength

Ti

is the symbol of the declared class for thickness tolerances

TR

is the symbol of the declared level for tensile strength perpendicular to faces

W

is the symbol of the declared class for width tolerances

WS

is the declared value for short term water absorption

Z

is the symbol of the declared value for water vapour resistance