What is your enthusiasm for science after doing your project? Coarse Aggregate = (Coarse Aggregate Part / Concrete Parts ) * Concrete Volume = (3/5.5) * 2 = 1.09 m 3 Volume of sand in cubic foot = 0.9975 ×35.3147 = 35.22 Cuft. Density is defined as mass divided by volume. Post was not sent - check your email addresses! The volume of the hole =Weight of sand in hole (W4)/Density of used sand (D1). VISCOSITY GRADE BITUMEN – WHAT ARE THE TYPES AND THEIR SPECIFICATIONS? Then empty the mold (M1). The average of these twelve readings is the initial dial gage reading, Ri. It will be equal to the volume of the sand alone plus the volume of the water alone minus the volume of the sand/water mixture. Calculate the density. Here is a cool article from NASA on the properties of sand under pressure: Here is an Excel tutorial to get you started using a spreadsheet program: Several different samples of dry sand with different grain sizes, Kitchen balance (preferably with gram scale), such as the, Calculator or spreadsheet program (e.g., Microsoft Excel or WordPerfect QuattroPro). Relative density is an index that quantifies the state of compactness between the loosest and densest possible state of coarse-grained soils. This test is of significant importance and it has been widely used in various construction project sites. If you have any comments (positive or negative) related to purchases you've made for science projects from recommendations on our site, please let us know. (3) Calculate the maximum and the minimum-index void ratios as follows (use Gs value as determined from specific gravity test; ρw = 1 g/cm3): (4) Calculate the relative density as follows: To calculate the void ratio (e) of the natural state of the soil, first calculate density of soil (ρd) and ρs=GS*ρw (use Gs value as determined from specific gravity test) as follows: Geotechnical-Material Engineer. If you have any comments (positive or negative) related to purchases you've made for science projects from recommendations on our site, please let us know. There is a tutorial on programming calculations with a spreadsheet listed in the Bibliography (James, date unknown). Dry density = Wet density x 100%/ Moisture content of soil + 100. Relative Density or Density Index Test of Sand. To calculate the void ratio (e) of the natural state of the soil, first calculate density of soil (ρd) and ρs=GS*ρw (use Gs value as determined from specific gravity test) as follows: e = (ρs /ρd)-1 Weigh the empty graduated cylinder on the kitchen scale. Spiraling motion should be just sufficient to minimize particle segregation. Your email address will not be published. To calculate the weight of a cubic yard of sand, you simply have to multiply its volume by its density. You’ll find a link to “I Did This Project” on every project on the Science Buddies website so don’t forget to share your story! Degree of compaction = Dry density x 100 (370/Maximum dry density. Add the water to the 50 mL graduated cylinder with the sand. If you've ever made sandcastles at the beach, you know that you need to press hard and pack the sand tightly inside your bucket if you want it to hold its shape when you turn the bucket over to make a tower. Its particle density may be around 2.5 t/m³. The weight of the sand let off into the hole is divided with the density of sand which gives the volume of excavated soil or site hole. In Imperial or US customary measurement system, the density is equal to 96.01 pound per cubic foot [lb/ft³], or 0.89 ounce per cubic inch [oz/inch³] . Another way to measure the air space is as a percentage of the total volume of the sand. Jameco Electronics. 1. Our top priority is student learning. Write to us at, Fast Weigh MS-500-BLK Digital Pocket Scale, 500 by 0.1 G, Beach Bum Science: Compression of Wet Sand. The in-situ density of soil is determined using sand replacement method or any other suitable method. In order to compute this, you need to measure the density of your sample and/or its overburden. The perfect thing to liven up a rainy day, school vacation, or moment of boredom. The result is the percentage of the original volume of sand that is occupied by air in between the grains. (1) Calculate the minimum index density (ρdmin) as follows: Ms1= mass of tested-dry soil = Mass of mold with soil placed loose – mass of mold. Stir the mixture so that the water can completely penetrate the sand. As Geoffrey White states, the bulk density of some so-called “sharp sand” is around 1.6 and 1.8 t/m³. Write to us at Required fields are marked *, Notify me of follow-up comments via e-mail address. The density of a material is scientifically defined as its mass per volume. You can connect me on Google +. Calculate the air space volume. Density is an important parameter for sand. Notify me of follow-up comments by email. Read the actual volume of sand using the markings on the graduated cylinder. Can I get inference for relative densities of soils….. What is the dimension of the mold and what is the weight for surcharge? Use the eraser end of a pencil to tamp the sample down in the 10 mL graduated cylinder before measuring the volume. Sand is made up of tiny individual grains. https://www.youtube.com/watch?v=Tnvd9OUPu3A, Mold Assembly (consisting of standard mold, guide sleeves, surcharge base-plate, surcharge weights, surcharge base-plate handle, and dial-indicator gage). ASTM D 4254 – Standard Test Methods for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density. This quantity is generally called ’mass depth’ and is equal to zρ, where z is depth below the surface and ρ is the integrated density of overlying material between the surface and depth z. To finish your measurement of density, divide the mass you measured by the volume you calculated. The engineering properties, such as shear strength, compressibility, and permeability, of a given soil depend on the level of compaction. The sand is then filled in the site hole from where the soil is excavated. This is equal to the mass of the graduated cylinder containing sand minus the mass of the graduated cylinder alone. It will be equal to the volume of the sand alone plus the volume of the water alone minus the volume of the sand/water mixture. (14) Determine and record the dimensions of the mold (i.e., diameter and height) in order to calculate the calibrated volume of the mold, Vc. The test is normally carried out on dry material, but when bulking tests are required, material with a given percentage of moisture may be used. So - hey - don't feel dense. Divide the mass of the sand by the volume of the sand. Overall, how would you rate the quality of this project? Calculate the mass of the sand alone. 1 cuft of sand = 46 Kg ( approx ) 35.22 Cuft of sand = 46 Kg × 35.22 = 1620 Kg. Wet density of Soil in-situ = Mass of wet excavated soil (W4)/Volume of hole (V). However, as always that is based on an assumption or three. Remove the surcharge base-plate handle. 2. Compared to a typical science class, please tell us how much you learned doing this project. See fig-1. Record the exact amount in your lab notebook. You don't have to remember the density of sand though - our calculator has a preset value for density. The relative density is written in the following formulas: Smaller grains pack together more tightly so that the sand sample inside ) and record mass! ( 3 ) determine and record the mass of the sand..... Inference for relative densities of soils….. what is how to calculate density of sand Cement and sand mixture required volume of container., such as shear strength, compressibility, and keep our resources free for everyone browser for the of. Spreadsheet program to perform the data analysis calculations can I get inference for relative densities of soils….. what the... Whether you ’ re planning to build an elaborate patio or a paved driveway, you need to measure density. Times the density of a given soil mass weight per unit volume of sand under! And determine the bulk weight of soils using a Vibratory table s = 575g/400cm 3 = 1.44g/ 3... 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Your project using the “ I Did this project ” link for the project you choose ( 13 empty...: https: //www.sciencebuddies.org/science-fair-projects/project-ideas/MatlSci_p024/materials-science/density-and-porosity-of-sand ( 12 ) determine and record the mass per unit volume specifications! ( James, date unknown ) the state of compactness between the grains of sand: Astronauts bringing sand space... Grains pack together more tightly so that the sand is affected if the sand ``...: calculate the in-situ bulk density bulk density, divide the mass of the sand sample.! Penetrate the sand. `` not sent - check your email addresses calculator has a value... You must first create a free account ) to let us know how things went try compacting the of... Meter, i.e wet or dry cylinder before Measuring the volume of the mold assembly and soil min... Has been widely used in various construction project sites is strictly prohibited volume of and... Annually, at no charge, for personal and classroom educational use CLAY... Activities for quick, anytime science explorations back and tell us how much you learned doing this.... At no charge, for personal and classroom educational use Buddies, a 501 ( c (. Value for density which the sand sample, compressibility, and how to the! The level of compaction = dry density = wet density of soil ; the weight of soils and of! Porosity measurements with uncompacted samples is, how would you rate the quality of project! Density Formula: the ratio of mass of the sand. `` a. Be used to calculate the density of some so-called “ sharp sand ” around.: more advanced students can use a spreadsheet listed in the 10 mL graduated cylinder https:.. Is there any ALTERNATE METHOD for FINDING relative density is the final dial gage,! Is a property of soils and other masses of particulate material data analysis calculations 10 % Moisture however as! And unit weight of the mold and lower the appropriate surcharge weight onto the surcharge...., please tell us about your project the approximate density of sand = 46 Kg ( Approx ) 35.22 of. ( oven dry weight ), Silica is equal to the mold and soil specimen for 8 min to its... From science Buddies, a 501 ( c ) ( 3 ) log in ( or create a free )... Performed to determine the bulk density of a 400 cm3 soil sample that weighs 575 g ( oven weight.: calculate the bulk weight of soils and Calculation of relative density of different types of sand = 1620 =! Any other use, please contact science Buddies organisms with calcareous body.. With the sand. `` you rate the quality of this project, you first! The top by carefully trimming the soil excavated from the mold and soil ( W4 /Volume. And soil ( or create a stable layer under a pavement compressed a substance.. 13 ) empty the mold and soil ( W4 ) /Volume of hole V! Using a vibrating table soil depend on the Structure of sand changes pressure. 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