By this statement, we can ensure that cement 3.1-3.16 times heavier than water of the same volume. Sand particles composed of quartz have a specific gravity ranging from 2.65 to 2.67. How do the calculated specific gravity of water and the liquid sample ( 1, 2) compare to the hydrometer readings ( 3, 4) for water and the liquid sample? If they do not differ by more than 0.03 g/cm 3, take the average. 1. The average specific gravity of the rocks varies from 2.6 to 2.8 According to BIS. 2. Specific gravity of liquid using a hydrometer 1. Introduction to Concrete Technology Laboratory 2. The specific gravity of the solid substance of most inorganic soils varies between 2.60 and 2.80. The relative density (specific gravity) of hydraulic cement is 3150 kg/m, which is equal to 3.15 grams/ml or 3.15 g/cm or 3.15 kg/liter. CE6612 - Concrete and Highway Engineering Lab VVIT Department of Civil Engineering Dharmapuri - 636 703 Regulation : 2013 Branch : B.E.- Civil Engineering Year & Semester : III Year / VI Semester CE6612-CONCRETE AND HIGHWAY ENGINEERING LAB LAB MANUAL. The materials were first dry mixed then with . The value for density of hydraulic cement is 2.8 g/cm (gram per cubic centimeter). The two most common involve a specific gravity bench or specific gravity flask, also known as a volumetric or le Chatelier flask. The Liquid Limit was computed to be 42%. Essay Sample Check Writing Quality. 2 likes 2,821 views. fraction to the nearest 0.1%. REPORT 7.1 Report specific gravity results to the nearest 0.001, and indicate the type of DENSITY You MUST follow the lab manual to understand the way that I want you to do it. According to the Portland Cement Association (PCA), Design and Control of Concrete Mixtures, 1988, the specific gravity of the Ordinary Portland Cement is approximately equal to 3.15 g/cc. Contents:Apparatus for Specific Gravity TestProcedure of TestCalculationsQuestion : Apparatus for Specific Gravity Test A balance [] Every material consists off so many little pores, which may contain voids in it. . Conduct the density determination on two samples of cement. ro and 1 ml. This is why we take the value for specific gravity of cement 3.15. The density bottle is cleaned and dried at a temperature of 105 to 110 degree celsius and cooled. Specific gravity is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. Empty the flask and fill the bottle with kerosene oil up to the tip of the bottle and consider it as a W4. Knowing the specific gravity of an aggregate is important since some deleterious particles are lighter than the "good" aggregates. For good pavement construction, the range of specific gravity of bitumen should be 0.97-1.10. (Numerous.) 09, 2017. And it sinks in water. Specific gravity may be expressed as bulk specific gravity, dry (Gsb), bulk specific gravity, saturated surface dry (Gsb SSD), or apparent specific gravity (Gsa). Rub the dry specific gravity bottle and fill with kerosene and weigh. Some deleterious particles are lighter than the good aggregates. Water, at a temperature of 73.4F (23C) has a specific gravity of 1. Similarly, the specific gravity of aggregate is required to be considered when we deal with lightweight and heavy-weight concrete. B. Excessive presence of moisture content in cement effects Workability and strength of cement. 2. Also report the weighted average for any sample that has more than one size fraction tested. Fig 3.7: Illustration for determination of Plastic Limit [7] Water was added to the soil and mixed thoroughly. The value will . The specific gravity of cement is generally about 3.15, but that of cement manufactured from materials other than limestone and clay, the value may vary. However, if your specific gravity is above 1.010, this can indicate mild dehydration. Plastic Limit Lab Report. Answer: What are the errors that affected the test results of test specific gravity and absorption of coarse aggregate? Initial and Final Setting Times of Cement 5. Tropical iron-rich laterite, as well as some lateritic soils, usually have a specific gravity of between 2.75 and 3.0 but could behigher. Otherwise, run three additional determinations until a pair of valves are obtained within 0.03 g/cm 3. Soundness of Cement 8. Also you MUST take all the information such as Abstract, Introduction , Background, Methods and Procedures, Results and Discussion, Conclusions . THEORY: Specific gravity is defined as the ratio between weight of a given volume of material and weight of an equal volume of water. Lab#1: Specific Gravity and Absorption of Coarse Aggregate (CA) - ASTM C127. Moreover, specific gravity itself is an important quality control parameter for cements while determining mix design of concrete. A25, A35, A45, A65, S35, S45,S65=0.99. [Expertise: Rheology, Cement, concrete] Mr. Dale Bentz . Fineness Modulus of Fine and Coarse Aggregates 9. Dale.Bentz@nist.gov . For Nominal mix design, the specific gravity of cement should be 3.15g/cc. Overview. Calculate the specific gravity of the soil solids using the following formula: Specific Gravity (G s) = W o / (W o + (W a - W b )) W o = Weight of sample of oven-dry soil, g = W ps - W p. W a = Weight of Pycnometer filled with water. Because the specific gravity is greater than 1. Fill half of the flask with cement (about 50 gm) and Measure the weight with its stopper (W2). "True Specific Gravity of Refractory Materials" [7]. The specific gravity of the cement can be calculated from the following formula. Some types of cement such as PPC, Portland Blast furnace slag will have the value near 2.90. Dry the flask carefully and fill with keroscene or naphtha to a point on the stem between ze. Every material has solid particles and pores which may contain water in it. 6.3 Calculate the apparent specific gravity as shown below: (B + A C) A Apparent Specific Gravity = 6.4 Calculate the percent absorption as shown below: x 100 A (S A) Percent Absorption = 7. Measure the weight of empty flask (W1). The specific gravity of any substance may be defined as the ratio of its specific weight of given volume to that of a standard substance of the same volume at a standard temperature. Usually, the value lies between 3.10 - 3.16 g/cc. This lab is performed to determine the specific gravity of soil by using a pycnometer. 6. Improved Essays. INTRODUCTION: Specific gravity is defined as the ratio between weight of a given volume of material and weight of an equal volume of water. 2. Urine specific gravity results fall between 1.002 and 1.030 if your kidneys are functioning at a normal level. Bowl the bottle gently in inclined position till no further air bubbles rise in to surface. Directions: The following formal lab write-up will be used to put together your final report for concrete. Then fill the flask with kerosene up to the top level of the flask. Take this mass be W3. Specific Gravity of cement (ASTM C188-87) - Read online for free. The sample as prepared shall have distilled water added to fill the volumetric flask about three fourths full of the stoppered bottle about half full. Specific gravity is the ratio of the weight of a cubic foot of a material to the weight of a cubic foot of water, which is 62.4 pcf. Specific gravity of water using a hydrometer 1. Specific Gravity of Fine Aggregatehttps://www.youtube.com/watch?v=_nhrZLZQ9M8Specific Gravity of Coarse Aggregatehttps://www.youtube.com/watch?v=EGRn6X1cTqk . Water, at a temperature of 73F (23C) has a specific gravity of 1. The primary aim of this test is, you can simply convert material weight to volume an vice versa. 100 Bureau dr., Gaithersburg MD 20899 . Water absorption value ranges from 0.1 - 2.0% for aggregate normally used in roads surfaces. Specific Gravity of Cement 6. To determine the specific gravity of cement, kerosene is used which does not react with cement. Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance. Concrete Lab Report. Specific Gravity is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. Specific gravity is not an indication of the quality of cement. Each country is likely to have their own local variant, but the methodology is usually similar. Normal Consistency of Cement 4. If the cement has exposed to extreme moisture content then, the specific gravity of cement will differ because of the moisture content present in the pores. SPECIFIC GRAVITY OF CEMENT (IS: 269 -1989 AND IS: 4031-1988) AIM: To determine the specific gravity of given sample of hydraulic cement. Page 2 of 10 Batangas State University College of Industrial Technology Applied Chemistry AST 102 then, the cement is either not minced finely as per the industry standard or it has more moisture content which will affect the mix and bonding. But in the case of cement water is not used because . Experiment Report (02) Specific Gravity and Absorption of Coarse Aggregate (ASTM C 127 88) Introduction: This test method covers the determination of Specific Gravity and Absorption of course aggregates. Specific Gravity is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. Data Analysis. Gsb and absorption are based on aggregate after soaking in . The flask should be totally dry and free of liquid. 4. APPARATUS: Physical balance, specific gravity bottle of 50ml capacity, clean kerosene. Specific gravity of water 1. Specific Gravity of Cement. Every material has solid particles and pores which may contain water in it. Specific gravity of liquid sample 1. Determination of specific gravity of cement ; 10 6 ; Determination of compressive strength of cement ; 12 7 ; Sieve analysis of coarse and fine aggregates ; 16 8 ; Specific gravity and water absorption of fine aggregates ; 21 9 ; The specific gravity of aggregate is also required in calculating the compacting factor in connection with the workability measurements. The weight of a batch of concrete varies with its composition, but a typical concrete mix about 145 pounds per cubic foot (pcf). The specific gravity may be expressed as bulk specific gravity (bulk specific gravity, SSD, and bulk specific gravity, OD), or No. Helium pycnometers may be a practical replacement or . Each group is responsible for submitting this write-up for grading. View LAB-REPORT-4.pptx from BSCE 3 at Cebu Institute of Technology - University. REPORT WRITING: . Procedure. In simple, Cement is 3.10 times heavier than the water. Fineness of Cement 3. But that doesn't mean it stays same for all types of cement we have. Mix cement and kerosene properly to remove air bubble from it. Normally our nominal mix design is based on the value of specific gravity of cement as 3.15. It is similar in nature to the fine aggregate specific gravity test. Discussion: Mix Design Report ORDER NOW FOR CUSTOMIZED AND ORIGINAL ESSAY PAPERS ON Discussion: Mix Design Report I need you to write report about the mix design. APPARATUS: Physical balance, specific gravity bottle of 50ml capacity, clean kerosene. The quantity of cement, Steel Fibres, sand and coarse aggregate essential for 30 cubes were weighted. Specific Gravity of Cement. Specific gravity is the ratio of the mass of unit volume of soil at a stated temperature to the mass of the same volume of gas-free distilled water at a stated temperature. Personnel . W b = Weight of Pycnometer filled with water and soil. The cement-specific gravity is greater than one which means the material sinks . Therefore, the specific gravity of a typical concrete mix is 145/62.4 or 2.32. It is permissible to report the average of two of the sample results if only one falls outside . I assume you know that. Consider it as W3. We know that specific gravity of cement or Density of cement is ranging between 3.1-3.16g/cc by this, cement is 3.16 times heavier than water of the same volume. Results must fall within: 0.025 for Bulk Specific Gravity (Dry), 0.020 for Apparent Specific Gravity and 0.25% for Absorption. Aggregates with water absorption up to 4.0% are acceptable in base coarse. Lab#2: Specific Gravity and Absorption of Fine Aggregate (FA) - ASTM C128. 3. 3. Normally nominal mix design is based on the value of specific gravity of cement as 3.15. 10504 Words; 43 Pages; Specific Gravity Bottle Essay. The specific gravity of sands is considered to be around 2.65. Specific Gravity is important for several reasons. 1980 Words; 8 Pages; Open Document. The specific gravity of a good quality cement should vary from 3.1 to 3.6 g/cc. SPECIFIC GRAVITY 4. DENSITY AND SPECIFIC GRAVITY OF CEMENT CE264-CONSTRUCTION MATERIALS AND TESTING LAB REPORT NO.4 PASSED BY: CANTILA,

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