Nur-Ranji Jajurie Lab Report 3: Standard Proctor Test for Soils Abstract Soil Compaction is the process in which stress is applied to a soil which causes densification as the voids are filled with solids.
This is a laboratory procedure to determine the amount of water Ww present in a quantity of soil in terms of its dry weight Ws. The water content w is usually expressed in percent.
Although it ia a simple experiment to perform, there are several sources of error that can occur. The most significant is the oven temperature. Many soil-forming minerals are hydrous, meaning they contain water within their crystal structures.
This temperature is used because it is high enough to evaporate all the water present in the pore spaces of the soil but is not so large that it drives water out of the structure of most minerals. Other sources of error include: Three to five moisture cans tin or aluminum with their lids; Temperature controlled oven a forced-draft type.
Weigh each of the empty moisture cans with their lids and record their weight W1 and its number; you may have to mark it with a felt tip pen Take the sample of soil under g collected from the field and place a sample of it into a can.
If you are not testing a field sample, then moisten the sample given to you 20 to 40 g with a small amount of water and thoroughly mix it with a spatula. Place the cap on the can and, weigh and record the can with the lid and the moist soil weight W2; Always use the same scale, and always check to see that they read zero; Remove the lid, place it underneath the can, and put the can into the drying oven Repeat these steps for the two other cans.
There should be three moisture cans in the oven. This procedure is adequate for small amounts of soil 10 to grams. Much larger soil samples may require occasional stirring so that a uniform drying takes place; Remove from the oven with tongs or heat-treated loves and weigh immediately; some manuals claim that convection currents affect the result, but this writer has never found this to be true; The total weight difference between W3 and W2 is the weight of the water that was evaporated from the soil.
This weight loss will be then used to calculate the percentage of water content w in the soil. Report the water content to the nearest 0.Moisture vs. Soil Density Moisture content of the soil is vital to proper compaction.
The Standard Proctor Test is a laboratory test used to determine the optimum water for a CIVLnotes Soil plombier-nemours.com [Compatibility Mode] Author: Administrator. Moisture content 2 Electrical conductivity 2 pH 2 Soluble chloride 3 Carbon 4 Nitrogen 5 Carbon/Nitrogen ratio 7 Phosphorus 7 Sulfur 9 Gypsum 9 have been specified for methods used by some suppliers of laboratory soil test data to SALIS that are not contained in this publication.
In addition a number of submethods have been defined for. Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture), rock, ceramics, crops, or wood.
Water content is used in a wide range of scientific and technical areas, and is expressed as a ratio, which can range from 0 (completely dry) to the value of the materials' porosity at saturation.
The water-content determination is a routine laboratory procedure. ASTM has designeated it with a Standard, ASTM D which can be found in “ASTM Standards vol. ”, and also AASHTO T, found under “AASHTO Materials: Part II: Tests”. This is a laboratory procedure to determine the amount of water Ww present in a quantity of soil in terms of its.
The Proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density. The test is named in honor of Ralph R. Proctor, who in. Designation: D − 10 Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass1 This standard is issued under the ﬁxed designation D; the number immediately following the designation indicates the year of.