Concrete made of iowa department of transportation standard mix c3 and aggregate gradation no. Some natural aggregate deposits, called pitrun gravel, consist. Coconut shell as partial replacement of coarse aggregate in concrete free download as powerpoint presentation. Coconut shell as partial replacement of coarse aggregate in. Performance of waste coconut shell as partial replacement of. Standard test method for sieve analysis of fine and coarse aggregates1 this standard is issued under the. The fine and coarse aggregates generally occupy 60% to 75% of the.
Aggregates for concrete e sieve and predominantly retained on the 75 m no. The test provides data needed to obtain that portio astm c 1a procedure for testing coarse aggregate larger than the average residual strength is computed for specified beam deflections beginning after the beam has been cracked in a standard manner. Repair material yield will increase with coarse aggregate extension depending upon aggregate size, extension level, air content and specific gravity of aggregate. To conduct a comparative study of plastic aggregate and natural aggregate. The effects of aggregate type, size, and content on the behavior of normal and highstrength concrete, and the relationships between compressive strength, flexural strength, and fracture energy are discussed. To improve the workability, many mixes contain both angular and round particles. Coarse aggregate is also described by its bulk density, which is a property that can easily be tested in the laboratory. All coarse aggregates shall be reasonably free of clay. Crushed granular coconut and palm eechanical properties oiction of 30% and 42% for rnel shell. According en 12620 is fm calculated on the following sieves. Experimental investigation of concrete using coconut shell as. The primary objective of this study is to evaluate the possibility of using plastic aggregate as coarse aggregate in concrete.
Coconut shell as partial replacement for coarse aggregate. An investigation of mechanical properties of recycled coarse. The effect of coarse aggregate gradation and cement content on strength of concrete was studied. Coarse aggregate article about coarse aggregate by the free. Coarse aggregate was then replaced with cs in 10 m2, 15 m3, 20 m4 percentages to study effect of cs replacement. Coarse aggregates all coarse aggregates a special requirement placed on all coarse aggregates deals with the restriction on the number of flat and elongated pieces. October 2019 sieve analysis of fine and coarse aggregates fop for aashto t 27 materials finer than 75 m no.
Performance of coconut shell as coarse aggregate in concrete. The coarser the aggregate, the more economical the mix. Coarse aggregate typically occupies over onethird of the volume of concrete, and. Pdf study of coarse aggregate characteristics on strength. The aggregate of each type is further subdivided into many types and classification based on its size. Approval of mineral aggregate sources shall be in accordance with 62. Properties of concrete with coconut shells as aggregate. The technique of sieve analysis is used for gradation of aggregate for use in concrete and for other applications. The function of the coarse aggregate is to act as the main loadbearing component of the concrete. A flat and elongated piece is defined as one having a ratio of length to thickness greater than five. Coarsegrained aggregates will not pass through a sieve with 4. Pdf laboratory investigation of different coarse aggregate sizes. Pervious concrete using brick chips as coarse aggregate.
Manual mixing by shovel was done to ensure consistent. Some variation in the type, quality, cleanliness, grading, moisture content, and other properties is expected. Senthamarai and devadas 2005 focused on the usage of industrial ceramic waste as replacement of natural coarse aggregate. Types of aggregates include coarse aggregate and fine aggregate. Results revealed that with 40% replacement of conventional coarse aggregate by coconut shell, 7 days compressive strength of concrete decreased by 62. Partial replacement of eplastic waste as coarseaggregate in. The volumes of water for well graded and poorly graded vary along. The percentage of fine to total aggregate is divided by 100 to produce the decimal equivalent, and then multiplied by the total aggregate volume to determine the volume of fine aggregate only.
Apr 28, 20 aggregates whose particles donot pass through 4. Pdf shape and grading of aggregates can influence concrete workability. What is the difference between fine aggregate and coarse. The main objective is to encourage the use of waste products as construction matecost housing. Coarse aggregategravel classification of coarse aggregate uncrushed gravel or stone which is the result of natural disintegration and crushed gravel or stone are usually called the coarse aggregates. Properties of concrete with coconut shells as aggregate replacement 22 2. The fine aggregate serve the purpose of filling all the open space in between the coarse particles. Fine aggregates content usually 35% to 45% by mass or volume of total. The aggregates are usually washed and graded at the pit or plant. Scope a sieve analysis, or gradation, measures distribution of aggregate particle sizes within a given sample. Close to half of the coarse aggregates used in portland cement concrete in north america are gravels. Pdf conventional concrete aggregate consists of sand fine aggregate and various sizes and shapes of gravel or stones coarse aggregate. Feb 01, 2014 the function of the coarse aggregate is to act as the main loadbearing component of the concrete. Perform a volumetric sieve analysis when aggregates with differences in bulk specific gravity greater than 0.
Coarse aggregate may be available in several different size groups, such as 19 to 4. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm h in. Sciencedirect international conference on solid waste management, 5iconswm 2015 partial replacement of eplastic waste as coarse aggregate in concrete ashwini manjunath b t department of. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. The standard testing procedure for this is the american society of testing. Mdot form 1859 coarse aggregate gravity created date. The higher the fm is, the coarser the aggregate is. Updates are made to the electronic file as needed and hard copies are uncontrolled.
As mentioned earlier, coarse aggregates are stones that are retained on 4. Aggregates types of aggregates coarse aggregate, fine. Most commonly used coarseaggregates are crushed stone,gravel. Aggregates are available in nature in different sizes. Compressive strength required for 28 days 20mpa maximum size of aggregate 20mm. Standard test method for sieve analysis of fine and coarse. Those particles that are predominantly retained on the 4. The size of aggregate used may be related to the mix proportions, type of work etc. The crushed stone or crushed gravel aggregate make the asphalt or concrete mix somewhat difficult to place. Jul 26, 2019 a procedure for testing coarse aggregate smaller than astm c inchpound values given in parentheses are for information only. Physical properties of aggregates rowan university. The internal pore characteristics are very important properties of aggregates. Coarse aggregate composed of 80% siliceous aggregates as determined by at least 609, shall be ls tested in a salt scaling test according to ls412 together with either the fine aggregate that the coarse aggregate is intended to be used with, or a fine aggregate from the same geographic area as the coarse aggregate. How much cement, sand and coarse aggregate are required for 1.