hydrometer test procedure pdf

This SOP covers the quantitative determination of the distribution of particle sizes in soils. The hydrometer, invented in the early eighteenth century, is a simple floating device calibrated to measures the specific gravity or density of a liquid. In a widely-used method for particle size analysis of soils, the weight percentages of sand, silt, and clay are calculated from the density of an aqueous soil suspension measured by hydrometer. Before conducting any test, students shall come prepared with theoretical background of the corresponding test (indicated under the … tion as will prevail in the sedimentation (hydrometer) test. Read the specific gravity … D2487 Have two to four reports ready to present with all information required for D2487 reports or 1.1 This test method covers the quantitative determination of the distribution of particle sizes in soils. The investigation has highlighted the differences that can be obtained on a single soil as a function of the variation in test procedures. 10 (2.00-mm) demineralized water and dispersing agent in the same propor- sieve into a series of fractions using the 3-in. 5. The particle size distri-bution is first determined using the standard hydrometer test in which the soil specimen is dispersed in distilled water with a chemical dispersant. The Composite correction (C t – C d) is negative of the hydrometer reading corresponding to the top meniscus. Record the mass of the material passing the 425 m (No. Standard Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method1 This standard is issued under the ﬁxed designation D1298; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. This article was most recently revised and updated by Amy Tikkanen, Corrections Manager. A parallel hydrometer test is then made on a duplicate soil specimen, but with-out a chemical dispersant. 5.4 Since this test method may not identify all dispersive clays, design decisions based solely on this test method may not be conservative. 25 Laboratory Testing Manual Date: 09 08 01 Page 1 of 17 METHOD OF TEST FOR DETERMINATION OF PARTICLE SIZE ANALYSIS OF SOILS 1. Particle Size Analysis II – Hydrometer Analysis GEL 324 Sedimentology Introduction Hydrometer analysis provides an approximate particle-size distribution for particles whose median diameters smaller than 4φ (0.0625mm), which includes silt and clay size particles. Pneumatic tests may be performed only when at least one of the following conditions exists: There are many versions of the procedure, differing in the type of dispersing solution, the volume of the suspension, the time of settling before taking hydrometer readings, or in the method of correcting the … TEST METHOD TYPE. Put room temperature, distilled water into test jar ensuring there is enough for the hydrometer to float freely (see picture 1). for hygroscopic moisture determination, at least 10 g. 5. Take the reading after the immersion. A number in parentheses indicates the year of last reapproval. Determine the volume of the hydrometer (V H) which is equal to the difference between the final and initial readings. The … Take about 800ml of water in one measuring cylinder. A … (50-mm), 11⁄2-in. procedure that increases sieve shaking time 10/29/07 1.0 PURPOSE AND SCOPE . Immerse the hydrometer in the cylinder. 3. The procedure utilizes Stoke’s Law of settling velocity for spherical particles in a fluid; 2 2 ( ) 9 2 − = g D V s f η ρ ρ (1) where; V = settling … Soil samples should be collected from each soil horizon to determine the soil … APPARATUS AND SUPPLIES 2.1Oven: A thermostatically controlled oven capable of maintaining temperatures of 230±9° F (110±5° C) for drying the hydrometer analysis samples. SPECIFIC GRAVITY TEST PROCEDURE (HYDROMETER) 1. 2. B. Bouyoucos (1936) proposed a more rapid and simpler procedure called the hydrometer method. 2. ucts by Hydrometer Method D1657 Test Method for Density or Relative Density of Light Hydrocarbons by Pressure Hydrometer E1 Speciﬁcation for ASTM Liquid-in-Glass Thermometers E77 Test Method for Inspection and Veriﬁcation of Ther-mometers E100 Speciﬁcation for ASTM Hydrometers E344 Terminology Relating to Thermometry and Hydrom-etry E2251 Speciﬁcation for Liquid-in-Glass ASTM … RECORD OF AMENDMENTS. Standard Reference: ASTM D 422 - Standard Test Method for Particle-Size Analysis of Soils . As shown in the video, we investigated the specific gravity of a selection of common household … The procedure uses the Stoke Speed Settlement Act for sieve analysis and hydrometer tests Lab Report - Free download as a PDF file (.pdf), text file (.txt) or read online for free. Stop shaking and allow it to stand. Chapter 14 | Pressure Test Procedures . A hydrometer is an instrument that measures the specific gravity of a liquid. Wear suitable eye protection. smaller than 2 mm (hydrometer method) WARNING This document references other documents normatively. Significance: The distribution of different grain sizes affects the engineering properties of soil. The students shall follow the guidelines indicated for conducting the tests for more effective, for better understanding and for logically interpreting the results. Pneumatic tests are potentially more dangerous than hydrostatic because of the higher level of potential energy. 3.9 Measurement for calibration of hydrometer 41 3.10 Cone penetrometer method 44 3.11 Soil sample before penetration 45 3.12 Plastic limit test 47 3.13 Linear shrinkage test 50 4.1 Particle size curve from hydrometer test and related sieving for soil sample A 54 4.2 Particle size curve from hydrometer test and related sieving for soil sample B 55 4.3 Sedimentation test with hydrometer; Insert a rubber ball or any other suitable cover on the top of the 1000 ml measuring cylinder containing the soil suspension and shake it vigorously end over end. D1140 Have a sample prepared and ready to wash. Be able to demonstrate sample preparation, either method A or B of the washing procedure, and the appropriate calculations. (75-mm), 2-in. It may naturally want to stick to the side of the test jar, so give it a gentle tap to … 2.2 Pneumatic Test Procedure . It is readily available at your local home brew shop, is inexpensive and has several important vinegar making uses. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS Licensed exclusively to SABS. Place the cylinder on a table and observe the initial reading. Soil … Immediately, start the stop watch, and remove the top cover from the cylinder. VERSION NUMBER. This instruction manual guides the students to conduct the test as per Bureau of Indian Standard procedures. No. Procedure 8.1 For referee testing, use the long plain form of hydrom-eter (1H to 10H). The distribution of particle sizes larger than 75 µm (retained on the No. Procedure of Hydrometer Test Part – 1: Calibration of Hydrometer. 3. Search. 1. Ministry of Transportation, Ontario Test Method LS-702 Rev. A hydrometer is an instrument used for measuring the relative density of liquids based on the concept of buoyancy.They are typically calibrated and graduated with one or more scales such as specific gravity.. A hydrometer usually consists of a sealed hollow glass tube with a wider bottom portion for buoyancy, a ballast such as lead or mercury for stability, and a narrow stem with graduations for measuring. Both analytical techniques are sedimentation procedures accepted as standard techniques for particle-size analysis. (25.0-mm), 3⁄4-in.