Laboratory Instructions for Tests of Cement, Mortar and Concrete
University of California, Berkeley. College of Engineering. Division of Civil Engineering. Testing Laboratory, Charles Derleth, Arthur Carl Alvarez
1912 - Building materials - 78 pages
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amount of water Apply the load arm floating throughout balance with scoop Batch number beam bottom boxes of capacities briquettes broken stone Calculate cent of voids COMPRESSION TEST CONCRETE Apparatus cubes cubic centimeters cubic foot Determine directions for operation dry crushed rock dry sand elastic limit fill the cylinder Fill the mould funnel immersed inch Keep the poise kerosene kinds and proportions laboratory Masonry Construction maximum load measuring cylinder mixing pan mortar operation of testing party number percentage of voids plaster of Paris plate poise arm floating Portland Cement pounds per cubic Principles of Reinforced proportions of materials Read the directions Reinforced Concrete required to fill sand and crushed sieve analysis specific gravity student tabular form tamping rods Taylor and Thompson TENSILE STRENGTH tension Testing Cement Testing machine equipped Treatise on Masonry trowel Turneaure and Maurer Voids in Sand water pail Weigh the amount weight in grams weight in pounds
Page 5 - Before leaving a machine or when a test is finished be sure that the clutches are properly thrown out and that the machine has stopped running. CAUTION. — At times machines have been left running by operators with the result that usually some part of the machine was broken.
Page 6 - Method of Test. Describe all operations which have any bearing on the performance or success of the test. Data. Submit a tabular transcript of the essential data from the laboratory log book.
Page 11 - The per cent of voids equals the ratio of the volume of water added to the volume of the pail, times 100.
Page 4 - Should any apparatus be broken, it should be reported immediately. Breakages due to carelessness will be charged to the student responsible for the damage.
Page 5 - The machines in the laboratory are in operation daily and students are welcome to witness the tests at any time. Do not operate a machine for the first time without the assistance of the instructor. Do not start a machine without determining the direction and speed with which it will move. Do not start a machine too suddenly as there is danger of stripping...
Page 3 - PREFACE This manual has been prepared for Civil Engineering students who take the course in cement testing at the University of California.
Page 4 - GENERAL RULES FOR LABORATORY WORK Prompt and regular attendance is required of every student.
Page 3 - The chief objects of the course are to acquaint the student with the methods of testing cement and cement products, and to cultivate habits of accurate observation and clear description of phenomena.