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The specific gravity of whole mix is the average specific gravity of all solid particles present in that mix. Specific gravity of soil solids refers only to the solid phase of the three phase soil system, it does not include the water and air phases present in the void space. In order to calculate the specific gravity of a soil the following relations should be known: Gs = unit weight or density of soil solid / unit weight or density of water. The specific gravity G of the soil = (W 2 – W 1) / [(W 4 – 1)-(W 3-W 2)] The specific gravity should be calculated at a temperature of 27 o C and reported to the nearest 0.01. PRINCIPLE: Specific gravity is the ratio of the… Follow Blog via Email. This comparison is in the form of ratio and is termed as the specific gravity of the soil. This experiment aimed to determine the specific gravity of a soil sample using a pycnometer. Density lab report - Custom College Essay Writing and Editing Service - We. Specific gravity of soil is a very important parameter which is used to determine particle size and void ratio. Different particles have different specific gravity. G= Specific gravity of soils. The result of the specific gravity test is reported to the nearest two digits after decimal. W 3 =Weight of pycnometer + oven dry soil + water. The specific gravity is generally needed to perform additional testing of the soil. M 3 = mass of the Pycnometer and soil and water, M 4 = mass of Pycnometer filled with water only. If the room temperature is different from 27 o C, the following correction should be done:-G’ … The soil sample was put in a pycnometer, which was then filled with water, taking care to eliminate air bubbles.
It has no units. Specific gravity - 10o-20o. Observations and Calculations for Specific Gravity of Soil. Where. For most of the soils, specific gravity lies in the range of 2.65 to 2.80. Each lab report contributes towards 10% of final grade for module. Mass of Pycnometer, Mp: 173.31 g. Mass of Pycnometer, Mp + Mass of Water, Mw: 669.85 g. Mass of Pycnometer, Mp + Mass of Water, Mw + Mass of Soil, Ms: 700.03 g. Mass of Soil, M (g): 54.93. Lab Report #1: Specific Gravity of Soils and Moisture Content. The specific gravity G of the soil = (W 2 – W 1) / [(W 4 – 1)-(W 3-W 2)] The specific gravity should be calculated at a temperature of 27 o C and reported to the nearest 0.01. So when we said that specific gravity of soils is 2.65, we are defining an average specific gravity of all solids present in soil mass. introduction: in this laboratory experiment, we determined the specific gravity of soil referencing astm d 854. specific gravity of solids is the ratio of unit weight/mass of solids to the unit weight/mass of water (liu 33). Academia.edu is a platform for academics to share research papers. Soil Tests.

W 4 =Weight of pycnometer + water full. This Density and specific gravity lab report - We will talk about this is available. Tag: specific gravity of soil lab report discussion. Read the experiment and high-light any specific directions requiring you to. For solids, specific gravity is an important parameter. W 1 =Empty weight of pycnometer.

f11.0. Gs = Ws / (Vs * ρ) Where: W s: mass of soil solid (gm) V s: volume of solid (cm 3) ρ w : density of water (gm / cm 3) Since V s =V w Gs = W s / W w W w = (W s + W 1) – W 2. in order to determine an accurate value for the specific gravity, mass measurements must be precise and done carefully. Solution for low flow measurement in research, pilot plant and lab applications. Laboratory soils-compaction testing uses the specific gravity from the –4 sample. W 2 =Weight of pycnometer + oven dry soil. The following data was collected at laboratory conditions for the completion of the specific gravity lab. Measure ammonia as mg/L NH3 and you are asked to report it as. For most of the soils, specific gravity … Safety & Precautions. For soil solids, Gs may be written as: Gs = density of the soil solids density of water = mass of soil solids mass of an equal volume of water.

Below table gives the average specific gravity values of different soils. PRINCIPLE: Specific gravity is the ratio of the weight in air of a given volume of a material at a standard temperature to the weight in air of an equal volume of distilled water at the same stated temperature. If the room temperature is different from 27 o C, the following correction should be done:-G’ = kG where, G’ = Corrected specific gravity … AIM: To determine the specific gravity of fine-grained soil by density bottle method as per IS: 2720 (Part III/Sec 1) – 1980.
Specific Gravity test of Soil by Density Bottle method. Where: Report. 23 Jan 2018 14 Sep 2018. If we consider a soil mix, different particle in that mix has different specific gravity value. AIM: To determine the specific gravity of fine-grained soil by density bottle method as per IS: 2720 (Part III/Sec 1) - 1980. The specific gravity of soil is determined using the relation: Where M 1 =mass of empty Pycnometer, M 2 = mass of the Pycnometer with dry soil.