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