rock test News
-
RSK merges with Structural Soils to become the UK’s number one site investigation company
A merger with the 130-strong site investigation contractor Structural Soils, a major player in the geotechnical industry with over 40 years of experience, has transformed RSK Group into the largest, most technically proficient geotechnical service provider in the UK. The merger – the largest in the company’s history – represents RSK’s first major strategic business decision since ...
-
Withdrawn Standard: ASTM D420-98(2003) Standard Guide to Site Characterization for Engineering Design and Construction Purposes (Withdrawn 2012)
This guide refers to ASTM methods by which soil, rock, and ground water conditions may be determined. The objective of the investigation should be to identify and locate, both horizontally and vertically, significant soil and rock types and ground water ...
-
PG&E Ranked Among Top Utilities For Sustainability Efforts
Pacific Gas and Electric Company (PG&E) announced today that it has been named one of the nation's three most sustainable large utilities by Target Rock Advisors, and has also been included in Target Rock's 2013 Sustainable Utility Leaders Index (SULI). This is the second time the utility has been included in the annual index, which is based on performance in three categories of ...
-
ASTM D2726 - 11 Standard Test Method for Bulk Specific Gravity and Density of Non-Absorptive Compacted Bituminous Mixtures
The results obtained from this test method can be used to determine the unit weight of compacted dense bituminous mixtures and in conjunction with Test Method D3203, to obtain percent air voids. These values in turn may be used in determining the relative degree of compaction. Since specific gravity has no units, it must be converted to density in order to do ...
-
ASTM C586 - 11 standard test method for potential alkali reactivity of carbonate rocks as concrete aggregates (Rock-Cylinder Method)
This test method is intended to give a relatively rapid indication of the potential expansive reactivity of certain carbonate rocks that may be used as concrete aggregates. The test method has been successfully used in (1) research and (2) preliminary screening of aggregate sources to indicate the presence of material with a potential for ...
-
ASTM D3744 / D3744M - 11a Standard Test Method for Aggregate Durability Index
This test method assigns an empirical value to the relative amount, fineness, and character of clay-like material that may be generated in an aggregate when subjected to mechanical degradation. The procedure has been used in limited geographical areas of the United States and the results have been correlated with aggregate performance in various ...
-
ASTM D806 - 11 Standard Test Method for Cement Content of Hardened Soil-Cement Mixtures
This test method determines cement content in mixtures of cement with soil or aggregate by chemical analysis. It was developed primarily for testing samples for which a significant degree of cement hydration or hardening has taken place. Test Methods D 2901 or D 5982 may be used for determining cement content of freshly mixed soil-cement ...
-
ASTM D4829 - 11 standard test method for expansion index of soils
The expansion index, EI, provides an indication of swelling potential of a compacted soil. The EI test is not used to duplicate any particular field conditions such as soil density, water content, loading, in-place soil structure, or soil water chemistry. However, consistent test conditions are used in preparation of ...
-
ASTM D3999 - 11 Standard Test Methods for the Determination of the Modulus and Damping Properties of Soils Using the Cyclic Triaxial Apparatus
The cyclic triaxial modulus and damping test provides parameters that may be considered for use in dynamic, linear and non-linear analytical methods. These test methods are used for the performance evaluation of both natural and engineered structures under dynamic of cyclic loads such as caused by earthquakes, ocean ...
-
ASTM D4511 - 11 Standard Test Method for Hydraulic Conductivity of Essentially Saturated Peat
Values of hydraulic conductivity determined by this test method may be useful in making rough preliminary estimates of the initial rates of drainage and compression of peat deposits when the only effective stress increase on the deposit is that resulting from a moderate, gradual lowering of the water table. ...
-
ASTM D7100 - 11 Standard Test Method for Hydraulic Conductivity Compatibility Testing of Soils with Aqueous Solutions
1. Scope 1.1 This test method covers hydraulic conductivity compatibility testing of saturated soils in the laboratory with aqueous solutions that may alter hydraulic conductivity (for example, waste related liquids) using a flexible-wall permeameter. A hydraulic conductivity test is ...
-
ASTM D5311 - 11 Standard Test Method for Load Controlled Cyclic Triaxial Strength of Soil
Cyclic triaxial strength test results are used for evaluating the ability of a soil to resist the shear stresses induced in a soil mass due to earthquake or other cyclic loading. Cyclic triaxial strength tests may be performed at different values of effective confining pressure on isotropically consolidated ...
-
Wind drives oxygen transport in Arctic waste rock
The growth of the diamond mining industry in Canada’s Northwest Territories has led to significant economic benefit to the region with three operating mines producing approximately 13% of the world’s diamonds in 2008, according to the Mining Association of Canada. However, the long-term benefit to northern communities will depend on careful environmental management of mining activities. The ...
-
ASTM D6459 - 11 standard test method for determination of Rolled Erosion Control Product (RECP) performance in protecting hillslopes from rainfall-induced erosion
This test method evaluates RECPs and their means of installation to 5.1.1 Reduce soil loss and sediment concentrations in stormwater runoff under conditions of varying rainfall intensity and soil type, and; 5.1.2 Improve water quality exiting the area disturbed by earthwork activity by reducing suspended solids. This test method models and ...
-
ASTM D7698 - 11a Standard Test Method for In-Place Estimation of Density and Water Content of Soil and Aggregate by Correlation with Complex Impedance Method
The test method is a procedure for estimating in-place values of density and water content of soils and soil-aggregates based on electrical measurements. The test method may be used for quality control and acceptance testing of compacted soil and soil aggregate mixtures as used in ...
-
ASTM D5777 - 00(2011)e1 standard guide for using the seismic refraction method for subsurface investigation
This guide summarizes the equipment, field procedures, and interpretation methods used for the determination of the depth, thickness and the seismic velocity of subsurface soil and rock or engineered materials, using the seismic refraction method. Measurement of subsurface conditions by the seismic refraction method requires a seismic energy source, trigger cable (or radio link), geophones, ...
-
ASTM D6066 - 11 Standard Practice for Determining the Normalized Penetration Resistance of Sands for Evaluation of Liquefaction Potential
Normalization of penetration resistance data is a frequently used method to evaluate the liquefaction susceptibility of sands. A large case history database from many countries has been accumulated to estimate instability of saturated sands during earthquakes (1,2,3,4). This test is used extensively for a great variety of geotechnical exploration programs where ...
-
ASTM D6429 - 99(2011)e1 standard guide for selecting surface geophysical methods
This guide applies to commonly used surface geophysical methods for those applications listed in Table 1. The rating system used in Table 1 is based upon the ability of each method to produce results under average field conditions when compared to other methods applied to the same application. An “A” rating implies a preferred method and a “B” rating implies an alternate ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you