Record the level of the liquid in the flask as initial reading.Put a weighted quantity of cement into the flask so that level of kerosene rises to about 22 ml mark,care being taken to avoid splashing . Answer: What are the errors that affected the test results of test specific gravity and absorption of coarse aggregate? DENSITY 2. The density bottle is cleaned and dried at a temperature of 105 to 110 degree celsius and cooled. Fineness of Cement 3. Dry the flask carefully and fill with keroscene or naphtha to a point on the stem between ze. Initial and Final Setting Times of Cement 5. A25, A35, A45, A65, S35, S45,S65=0.99. Specific gravity of water using a hydrometer 1. Lab#2: Specific Gravity and Absorption of Fine Aggregate (FA) - ASTM C128. Specific gravity of liquid sample 1. For good pavement construction, the range of specific gravity of bitumen should be 0.97-1.10. Data Analysis. It is permissible to report the average of two of the sample results if only one falls outside . Lab#1: Specific Gravity and Absorption of Coarse Aggregate (CA) - ASTM C127. Results must fall within: 0.025 for Bulk Specific Gravity (Dry), 0.020 for Apparent Specific Gravity and 0.25% for Absorption. Therefore, the specific gravity of a typical concrete mix is 145/62.4 or 2.32. Specific Gravity of Fine Aggregatehttps://www.youtube.com/watch?v=_nhrZLZQ9M8Specific Gravity of Coarse Aggregatehttps://www.youtube.com/watch?v=EGRn6X1cTqk . 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. Fill half of the flask with cement (about 50 gm) and Measure the weight with its stopper (W2). According to BIS. What Is Specific Gravity of Aggregate? ro and 1 ml. No. 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 ; Introduction to Concrete Technology Laboratory 2. Aggregates with water absorption up to 4.0% are acceptable in base coarse. Reading time: 1 minuteSpecific gravity of fine aggregate (sand) is the ratio of the weight of given volume of aggregates to the weight of equal volume of water. Measure the weight of empty flask (W1). 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. Sand particles composed of quartz have a specific gravity ranging from 2.65 to 2.67. The specific gravity may be expressed as bulk specific gravity (bulk specific gravity, SSD, and bulk specific gravity, OD), or A90 and S90= 0.98. The materials were first dry mixed then with . The coarse aggregate specific gravity test (Figure 1) is used to calculate the specific gravity of a coarse aggregate sample by determining the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. 100 Bureau dr., Gaithersburg MD 20899 . REPORT 7.1 Report specific gravity results to the nearest 0.001, and indicate the type of . 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. Normally nominal mix design is based on the value of specific gravity of cement as 3.15. Personnel . 1444 Words6 Pages. SPECIFIC GRAVITY OF CEMENT (IS: 269 -1989 AND IS: 4031-1988) AIM: To determine the specific gravity of given sample of hydraulic cement. Also you MUST take all the information such as Abstract, Introduction , Background, Methods and Procedures, Results and Discussion, Conclusions . Specific Gravity of Cement. The flask should be totally dry and free of liquid. View LAB-REPORT-4.pptx from BSCE 3 at Cebu Institute of Technology - University. Eng.Abdullah Concrete Lab Report. fraction to the nearest 0.1%. Take this mass be W3. This specific gravity of cement ranging from 3.1 to 3.16 g/cc.By this statement, we may ensure that cement 3.1-3.16 times heavier than this water of this same volume, and it sinks in water.. Because the specific gravity isn't less than 1, every material consists of so . The specific gravity defines that the substance is how much heavier than water or reference substance of the same volume. Fig 3.7: Illustration for determination of Plastic Limit [7] Water was added to the soil and mixed thoroughly. Standard Value of Specific Gravity of Cement. In simple, Cement is 3.10 times heavier than the water. The specific gravity of a good quality cement should vary from 3.1 to 3.6 g/cc. Discharge some of the kerosene out and introduce a weighed superiority of cement (about 59 g) into the bottle. The value for density of hydraulic cement is 2.8 g/cm (gram per cubic centimeter). The quantity of cement, Steel Fibres, sand and coarse aggregate essential for 30 cubes were weighted. Specific Gravity of cement (ASTM C188-87) - Read online for free. APPARATUS: Physical balance, specific gravity bottle of 50ml capacity, clean kerosene. For Nominal mix design, the specific gravity of cement should be 3.15g/cc. Each group is responsible for submitting this write-up for grading. [Expertise: Rheology, Cement, concrete] Mr. Dale Bentz . The specific gravity of cement can be determined by Le Chatelier's Flask method. Directions: The following formal lab write-up will be used to put together your final report for concrete. The primary aim of this test is, you can simply convert material weight to volume an vice versa. Some types of cement such as PPC, Portland Blast furnace slag will have the value near 2.90. It is similar in nature to the fine aggregate specific gravity test. Soundness of Cement 8. The Liquid Limit was computed to be 42%. This is why we take the value for specific gravity of cement 3.15. The specific gravity of the solid substance of most inorganic soils varies between 2.60 and 2.80. 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. Specific Gravity of Cement With the help of Specific Gravity Bottle at site..#CivilPositive#SpecificGravity#Cement#SpecificGravityBottle#CONCRETE MIX DESIG. Specific gravity is not an indication of the quality of cement. This lab is performed to determine the specific gravity of soil by using a pycnometer. Plastic Limit Lab Report. Mar. The specific gravity of cement ranging from 3.1 to 3.16 g/cc. 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. Water absorption value ranges from 0.1 - 2.0% for aggregate normally used in roads surfaces. For most of the cements we use in construction has a specific gravity of cement ranging between 3.1 to 3.16 g/cc and a density of 1440 Kg/m3. The specific gravity of sands is considered to be around 2.65. 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. 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. 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. Contents:Apparatus for Specific Gravity TestProcedure of TestCalculationsQuestion : Apparatus for Specific Gravity Test A balance [] The two most common involve a specific gravity bench or specific gravity flask, also known as a volumetric or le Chatelier flask. Because the specific gravity is greater than 1. Every material consists off so many little pores, which may contain voids in it. 2 likes 2,821 views. DENSITY AND SPECIFIC GRAVITY OF CEMENT CE264-CONSTRUCTION MATERIALS AND TESTING LAB REPORT NO.4 PASSED BY: CANTILA, 3.2.2.2 PLASTIC LIMIT. The average specific gravity of the rocks varies from 2.6 to 2.8 Every material has solid particles and pores which may contain water in it. . Specific Gravity Bottle Essay. Specific Gravity of Cement 6. CONCRETE TECHNOLOGY LAB SYLLABUS Exp. Specific gravity may be expressed as bulk specific gravity, dry (Gsb), bulk specific gravity, saturated surface dry (Gsb SSD), or apparent specific gravity (Gsa). Conduct the density determination on two samples of cement. 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. Procedure Of Test: 1. 301-975 5865 [Expertise: cement, concrete, test methods] . REPORT WRITING: . The weight of a batch of concrete varies with its composition, but a typical concrete mix about 145 pounds per cubic foot (pcf). THEORY: Specific gravity is defined as the ratio between weight of a given volume of material and weight of an equal volume of water. Procedure. Specific gravity of liquid using a hydrometer 1. "True Specific Gravity of Refractory Materials" [7]. Answer (1 of 5): First prepare samples of your concrete. National Institute of Standard and Technology, MS 8615 . IS Code for Specific Gravity of Cement Test:- IS: 4031 (Part 11)-1988, Methods of physical tests for Hydraulic cement for determination of specific gravity of cement From determination point of view it is that water content at which a 3 mm thread of the soil sample does not crumble. 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. Specific Gravity is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. (Numerous.) Consider it as W3. o Report at once to the Lab. You asked about sources of error, not how the test works. Read definition, apparatus, IS code, test procedure, observations, formula,result, lab report about specific gravity of cement by Le-Chatelier method. The specific gravity of solid particles can be determined in a laboratory using a density bottle fitted with a stopper having a hole. If you are testing concrete that has already set, you need to cut out sam. 4. Specific Gravity. Dale.Bentz@nist.gov . Water, at a temperature of 73F (23C) has a specific gravity of 1. 3. INTRODUCTION: Specific gravity is defined as the ratio between weight of a given volume of material and weight of an equal volume of water. But that doesn't mean it stays same for all types of cement we have. 1. APPARATUS: Balance 5 Kg capacity readable to 0.5g. SPECIFIC GRAVITY 4. B. Specific Gravity is important for several reasons. 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. To determine the specific gravity of cement, kerosene is used which does not react with cement. If they do not differ by more than 0.03 g/cm 3, take the average. Fineness Modulus of Fine and Coarse Aggregates 9. List of Experiments 1. 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. 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. Specific gravity of water 1. It is used in the calculation of mix proportion. Standard Le-Chatelier flask conforming to the dimensions shown in figure is used to determine specific gravity of cement. Normal Consistency of Cement 4. APPARATUS: Physical balance, specific gravity bottle of 50ml capacity, clean kerosene. The specific gravity of aggregate is also required in calculating the compacting factor in connection with the workability measurements. Excessive presence of moisture content in cement effects Workability and strength of cement. The cement-specific gravity is greater than one which means the material sinks . Mostly, the standard substance is taken water at 4 C. For gases, the air is taken as standard at 25C. I assume you know that. Gsb and absorption are based on aggregate after soaking in . Mix cement and kerosene properly to remove air bubble from it. By: Sarchia Khursheed. . Urine specific gravity results fall between 1.002 and 1.030 if your kidneys are functioning at a normal level. 2. 2. Compression Strength of Cement 7. Each country is likely to have their own local variant, but the methodology is usually similar. 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. 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. Then fill the flask with kerosene up to the top level of the flask. By this statement, we can ensure that cement 3.1-3.16 times heavier than water of the same volume. 6. Otherwise, run three additional determinations until a pair of valves are obtained within 0.03 g/cm 3. Specific Gravity of Cement. This report will show the materials used and procedure in getting the specific gravity and absorption of coarse aggregates. Where Specific gravity of Kerosene = 0.79 g/cc. The standard method is to sample at random during pouring and make several 15cm cubes in standard moulds, set for 24 hours then cure for a further 6 days under water. Overview. 1980 Words; 8 Pages; Open Document. Rub the dry specific gravity bottle and fill with kerosene and weigh. 10504 Words; 43 Pages; Specific Gravity Bottle Essay. Empty the flask and fill the bottle with kerosene oil up to the tip of the bottle and consider it as a W4. 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. Procedure: 1. Sample container in the form of a wire mesh bucket of capacity 4000 - 7000 cm 3 and not more than 6.3mm mesh. Standard Reference: ASTM D 854-00 - Standard Test for Specific Gravity of Soil . Improved Essays. And it sinks in water. 2. Every material has solid particles and pores which may contain water in it. Record the readings and complete the following data sheet. But in the case of cement water is not used because . Similarly, the specific gravity of aggregate is required to be considered when we deal with lightweight and heavy-weight concrete. Density, p = mass of cement/displaced volume. Helium pycnometers may be a practical replacement or . The value will . W b = Weight of Pycnometer filled with water and soil. The specific gravity of the cement can be calculated from the following formula. Knowing the specific gravity of an aggregate is important since some deleterious particles are lighter than the "good" aggregates. 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? Specific Gravity is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. Fill the bottle to the top with kerosene . Some deleterious particles are lighter than the good aggregates. Essay Sample Check Writing Quality. Engineering. Bowl the bottle gently in inclined position till no further air bubbles rise in to surface. Also report the weighted average for any sample that has more than one size fraction tested. 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. 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. Moreover, specific gravity itself is an important quality control parameter for cements while determining mix design of concrete. You MUST follow the lab manual to understand the way that I want you to do it. Usually, the value lies between 3.10 - 3.16 g/cc. 09, 2017. The density bottle of 50 ml capacity is generally used [IS: 2720 Part 2 1980]. Specific Gravity of Cement is nothing but the ratio between the volume of cement to the volume of the same quantity of water. Normally our nominal mix design is based on the value of specific gravity of cement as 3.15. Specific gravity is ratio of weight of a volume of a particular material to the weight of the same volume of water at a specified temperature. Water, at a temperature of 73.4F (23C) has a specific gravity of 1. However, if your specific gravity is above 1.010, this can indicate mild dehydration. Specific Gravity of Cement. 3.
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