Standard Test Method for Determining the Presence of Expanding Clays in Rock for Erosion Control Using Ethylene Glycol

Importancia y uso:

5.1 Rock for erosion control consists of individual pieces of natural quarried stone or large boulders and cobbles. The ability of these individual pieces of stone to resist deterioration due to weathering action affects the stability of the integral placement of rock for erosion control and hence, the stability of construction projects, structures, shorelines, and stream banks.

5.2 Deterioration of stone in this test is one indicator that similar samples exposed to wet/dry and freeze/thaw cycles may break down in a water-soaked environment condition in service.

5.3 This test method was developed to be used in conjunction with additional test methods listed in Practice D4992. This test method provides a quantitative value indicating potential resistance to weathering; however, the results of this test method are not to be used as the sole basis for the determination of rock durability.

Note 1: The quality of the result produced by this standard is dependent upon the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluation some of those factors.

Subcomité:

D18.17

Referida por:

D4992-22

Volúmen:

04.09

Número ICS:

91.100.15 (Mineral materials and products)

Palabras clave:

armor stone; breakwater stone; climatic setting; erosion control; ethylene glycol; expanding clays; freeze-thaw; gabion-fill; jetty stone; laboratory testing; riprap; rock; rock material properties; Smectite; wet dry;