Properties of Marble

 

Properties of Marble

Marble is a highly durable stone and is used for countertops, flooring, stairs. Scientists have tested and documented the full range of granite and all its capabilities. Below is the property range of values for granite. These values determines it’s strength which measures its ability to resist stresses.

properties of marble

Marble Property Range of Values
Compressive Strength (C170) lbs/in² ………………………..6,000-35,000Recommended (min): 7,500
Flexural Strength (C880) lbs/in² ………………………..600-4,900Recommended (min): 1,000
Modulus of Elasticity** (in millions) lbs/in² ………………………..1.5-5.0
Density, lb/ft3 (C97) ………..140-185Recommended (min): 162 (calcite), 175 (dolomite)
Thermal Conductivity “k” Btu/in/hr/ft2/ºF……………..10.45-15.65
Property Range of Values
Water Vapor Permeability Perm-inch …………………….0.324-4.460
Coefficient of Thermal Expansion in/in/ºF…. 3.7 x 10-6 – 5.0 x 10-6
Modulus of Rupture (C99) lbs/in² ……………………….1,000-4,000Recommended (min): 1,000
Absorption, by weight % (C97). 0.060-1.0 Recommended (max): 0.20

Abrasion Resistance Ha(C241)…5.0-50.0Recommended (min): 10 It should be noted that the strength of a marble is the measure of its ability to resist stresses. The strength of marble is dependant on several factors including: the rift and cleavage of the crystals, the degree of cohesion, the interlocking of the crystals, and the nature of any cementing materials present.

Fire Resistance

The marble stone is not considered combustible so, marble is considered to be a fire- resistant material.  However, due to it’s thermal conductivity, heat transfer through marble happens quickly. Marble is not considered a highly rated thermal insulator.

Abrasion Resistance

Due to marble’s uniform wearing qualities, it is desirable and economically practical to use for floors and stairs. Marble with an abrasive hardness rating of 10 or higher is recommended for the use of flooring. When using marble for commercial floors, stair treads, and platforms subjected to heavy foot traffic, it is recommended that there is a minimum abrasive hardness rating of 12.

Factors Affecting Properties

Marble is an ideal material for building because of it’s durability and resistance to weather cycles. Marble is also ideal because it has a low rate of moisture absorption.

Live Chat Software