Slump and kelly ball testing would be performed to investigate workability of mixture. Lab 1 concrete proportioning, mixing, and testing supplemental lab manual prepared by mutlu ozer objectives concepts. Tests on concrete concrete slump test, compression test for. The quantity of cement, standard sand and water required for each cube are as follows cement 200gms 2mm to 1mm 200gms. The compacting factor test is performed to find out the workability of concrete. Concrete technology lab manual pdf ct lab manual pdf. If it felt rough, it indicates adulteration with sand. Lab 1 concrete proportioning, mixing, and testing supplemental lab manual prepared by mutlu ozer objectives concepts background experimental procedure report requirements discussion objectives students make concrete according to the mix design. It helps to identify the usage of cement for different purposes based on its durability and performance. This test covers the determination of the air content of freshly mixed hydraulic cement concrete. Oct 31, 2017 quality tests on cement are carried out to check the strength and quality of the cement used in construction.
The blaine air permeability tester is mainly used to measure the fineness of the cement, which in turn can be an indication of speed of setting and rate of strength development. Checking of materials is an essential part of civil engineering as the life of structure is dependent on the quality of material used. For example, if we need to calculate the amount of water required for a 200 g of cement which has 30% consistency means then we need 20030% 60g water to prepare a standard consistency. Place the lightly oiled mould on a lightly oiled glass sheet and fill it with cement paste formed by gauging cement with 0. Standard consistency of an ordinary portland cement varies between 2535%. The sample should be representative of the concrete supplied. Following tests can be performed on cement in laboratory to check its quality. This should be done as soon as discharge of the concrete commences. Preface in civil engineering, materials used for structure such as cement, fine aggregate, coarse aggregate etc. Compressive strength of concrete cube test pdf, procedure, results the compressive strength of the concrete cube test provides an idea about all the characteristics of concrete. You also gain access to a state of theart chemistry lab for timely and accurate testing, evaluation and recommendations. For getting assurance about the good quality of the structure different laboratory tests are.
Such a test would enable determination of compliance to design specifications and of the uniformity of cement dispersion throughout the concrete mixture. Fe2o3 c4af 58 aluminoferrite tricalcium aluminate 3 cao. The cement of good quality should have less than 10% of wt of cement particles larger than 90 m. How to check quality of cement on site fineness test of cement.
Following are the tests to be conducted to judge the quality of cement. A specially designed flask, called ale chatelier flask, and 300 ml test or 900 ml for a 3 replica of kerosene are required to perform the standard test, producing. This test covers the determination of air content of the entire sample of concrete and is, therefore, only applicable to dense, nonporous aggregates. Large size specimen cubes cannot be made since cement shrinks and cracks may develop. Concrete mix design laboratory procedure 1 follow the procedure detailed in the concrete mix designce330l student lab manual department of civil engineering, the southern illinois university edwardsville school of. Fineness test of cement and its significance tests on cement. Concrete is a mixture of cement, sand, aggregate, water, and possibly an admixture. Chapter 12testing of cement part 1 page 61 a bed of cement is prepared in special permeability cell and have exact porosity e 0,500 weight a quantity of cement. This weight shall not exceed 10% for ordinary cement. Test procedure aashtq t 161 this test is used as an indicator of the amount of clay size material in the in the fine aggregate. A specially designed flask, called ale chatelier flask, and 300 mltest or 900 ml for a 3 replica of kerosene are required to.
Cement consistency test standard consistency of cement. When it comes to concrete testing services, aet is a leading partner for general contractors and their material suppliers. The objective of this lab is to understand the compressive and tensile properties of hardened. Free powerpoint templates page 7 take correctly 100grams of cement on a standard is sieve no. This is a test to estimate the quantity of mixing water to form a paste of normal consistency defined as that percentage water requirement of the cement paste, the viscosity of which will be such that the vicats plunger penetrates up to a point 5 to 7 mm from the bottom of the vicats mould. Pdf cement consistency and setting time akila rajasekaran.
Just click on the names of the tests above to know the entire procedure of how we perform these tests. Sampling the first step is to take a test sample from the large batch of concrete. The results of the slump test indicate the watercement ratio of the concrete. Norling, senior soilcement engineer, portland cement association one of the reasons for the good service record of soilcement has been that standardized laboratory tests have been available for determining control factors for construction. The flask should be free from the liquid that means it should be fully dry.
This test method is intended to be used to determine the amount of water by % weight of dry cement required to prepare hydraulic cement pastes for testing. Plastic property testing shall include test methods for standard consistency and plasticity of lime putty, water retention of hydrated lime, and air entrainment. The current testing standard is time consuming and requires disposal of the chemicals. This test method conforms to the astm standard requirements of specification c187. Inspect all materials used in the construction of concrete work at their source, on the job, or both. Followings are the four steps to be followed to perform specific gravity test of cement. Standard laboratory tests for soil cementdevelopment. Cement testing lab, astm cement tests, cement chemical. Several tests should be performed to determine the characteristics of cement and its compatibility with other materials in the concrete mix design. Test procedure for soilcement testing txdot designation. Cement setting time test initial and final procedure by.
A thick paste of cement with water is made on a piece of a glass plate and it is kept under water for 24 hours. Open the bag and take a good look at the cement, then it should not contain any visible lumps. You also gain access to a stateoftheart chemistry lab for timely and accurate testing, evaluation and recommendations. Home testing cement testing laboratory the heart of concrete lies in the cement. Weigh the material required for each cube separately. Perform a slump test using the procedure given below. The blaine air permeability tester is mainly used to measure the fineness of the cement, which in turn can be an indication of. Quality tests on cement are carried out to check the strength and quality of the cement used in construction. If a small quantity of cement is thrown into the water, it should float some time before finally sinking. The specific gravity test procedure contains only four steps. These test methods cover physical testing of quicklime, hydrated lime, and limestone. We offer independent concrete testing labs for sampling and physical concrete material testing. That means we need 25% of water in volume to make a standard consistency of cement.
A thin paste of cement with water should feel sticky between the fingers. Nov 03, 2017 how to check quality of cement on site fineness test of cement. States which use this test for portland cement concrete specify a minimum sand equivalent between 70 and 80. Aug 08, 2017 how to test initial and final setting time test of cement by vicat apparatus as per is code 4031 part 5, which is done in our established company laboratory. As the sand equivalent number increases it indicates less clay sized material in the sample. Compaction factor test of concrete for low workability. I want to know how to conduct soil and concrete field and lab tests such as cube test,sand replacement and standard penetration test,etc. Norling, senior soilcement engineer, portland cement association one of the reasons for the good service record of soilcement has been that standardized laboratory tests have been available for determining.
The block is then immersed in water for three days. Concrete technology lab viva questions with answers pdf posted on august 19, 2018 april 12, 2019 by engineer 19 comments posted in concrete technology lab viva questions. Survey lab field works 7 surveying 33 testes on cement 7 testes on fresh concrete 5 tests on aggregates 1 tests on hardened concrete 3 traffic engineering 3 transportation engineering 29 transportation engineering lab 7 types of cement 4 uncategorized 11 waste water engineering 8 water resource engineering 16. Free powerpoint templates page 1 free powerpoint templates testing of cement. The use of dirty or contaminated aggregates results in a lower bond strength between the cement paste and the aggregates, thus producing a poorer quality cement paste, thereby reducing concrete strength. Nationally recognized cement and concrete testing labs. Tests on cement at construction site to check quality of cement. This test may only be performed on concrete containing dense aggregates. By this test, the quality and the quantity of concrete can be controlled and the degree of adulteration can be checked. By this single test one judge that whether concreting has been done properly or not. Compressive strength of concrete cube test pdf, procedure. When cement is touched or rubbed in between fingers, it should give a smooth feeling.
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