Coarse aggregate was then replaced with cs in 10 m2, 15 m3, 20 m4 percentages to study effect of cs replacement. Textural characteristics of fine aggregate efficiency on. Download as doc, pdf, txt or read online from scribd. One source of fine aggregate was utilized in this investigation for the high. Physical properties of fine and coarse aggregate uwmilwaukee. Gradation cleanliness hardness abrasion, wear, and degradation aggregate shape. Physical properties of aggregates 1 free download as word doc. Depending on composition, shape, size and other properties of fine aggregate you can have a significant impact on the output. The elongation index is not applicable to sizes smaller than 6. The key physical properties or characteristics are. The current manuscript presents a detailed study on physical properties of aggregates procured from all seventeen districts in gujarat india, having coarse aggregate availability. Physical properties of aggregates 1 porosity sand scribd. Aggregates generally occupy 65 80% of a concretes volume. Pdf the effect of the using waste marble dust as fine sand.
The study revealed that substituting the very fine aggregate passing. Properties of concrete with coconut shells as aggregate replacement 22 2. Bahar 2010 studied the effect of using marble dust waste as a fine material on the mechanical properties of the concrete mix. The physical properties of these specimens were then investigated by compressive strength test, flexural strength test, water absorption test, hot water resistance test, measurement of pore distribution and observation of. In this post, we will see about aggregate properties and its usage. Chemical compositions and physical properties of portland cement kubsia used. Sieve analysis test lab report 1054 words bartleby. Aggregate impact value the aggregate impact value gives relative measure of the resistance of an aggregate to sudden shock or impact. En 933, tests for geometrical properties of aggregates en 67, tests for thermal and weathering properties of aggregates.
The properties of the rock, from which the aggregates are formed, depend on the properties of constituent materials and the nature of bond between them. The elongation index is the total weight of the material. In the first tier, an energybased parameter termed the energy ratio er is calculated using the surface energy measurements. Tests for mechanical and physical properties of aggregates. One of the physical properties of aggregate that influence the property of concrete is the grading of aggregate. A maximum size up to 40 mm is used for coarse aggregate in most structural applications, while for mass concreting purposes such as dams, sizes up to 150 mm may be used. Fine aggregates quality also influence the mixture proportions and hardening properties. Aim and objectives aim to demonstrate the how laboratory test can be used to assess the physical properties of aggregate intended to be used in concrete. The elastic modulus and abrasion resistance of the concrete can be influenced with fine aggregate. Pdf assessment of physical properties of coarse aggregates in. Mix proportions in order to investigate properties of cs concretes, six mixes were employed. The properties of the coarse aggregate used in a concrete mixture affects the modulus for a few reasons.
Materials utilized for this project consisted of cfa, cement, fine aggregate, coarse aggregate, and coal fly ash. Aggregate particles have certain physical and chemical properties which make the aggregate acceptable or unacceptable for specific uses and conditions. A higher aggregate modulus will result in a concrete having a higher modulus. Introduction aggregate is one of the basic constituents of concrete. Various tests are carried out to determine the properties of fresh and harden concrete of m25 grade with. Some natural aggregate deposits, called pitrun gravel, consist of gravel and sand that can be readily used in concrete after minimal processing. Aggregates for concrete bination of gravels or crushed stone with particles predominantly larger than 5 mm 0. Fine aggregates provide dimensional stability to the mixture. Flakiness index the flakiness index of aggregate is the percentage by weight of particles in it whose least dimension thickness is less than threefifths of their mean dimension.
The limitations on the amount of organic impurities allowed in fine. The physical properties of the cement tested according to indian standards procedure constituent material. Concrete is by far the most versatile and most widely used construction material worldwide. Gradation cleanliness hardness abrasion, wear, and degradation aggregate shape the goal of this lesson is that you participate in at least one lab related to each key aggregate characteristic. The flakiness index is taken as the total weight of the. Therefore, current experimental results are applicable for normal, spherical and angular shaped eaf slag fine aggregate concrete irrespective of wc. Aggregates are the most mined materials in the world. High temperature influence on concrete produced by.
Properties of concrete with coconut shells as aggregate. Fine aggregates contain particles in the size range 75 m to 4. Aggregate particles have certain physical and chemical properties which make. It has known and deep settled that, its fine aggregates are used nearly as filling constitutes to reduce the cement percent with the concrete past. Mar 11, 2014 for the love of physics walter lewin may 16, 2011 duration. Assessment of physical properties of coarse aggregates in. Aggregates types of aggregates coarse aggregate, fine. Elongation index the elongation index on an aggregate is the percentage by weight of particles whose greatest dimension length is greater than 1. Based on the origin, natural rocks are classified as igneous, sedimentary and metamorphic rocks. However, aggregate is susceptible to volume change during freezing and thawing cycles. Quartzite, basalt, sintered fly ash sandstone bloated clay aggregates can also be classified on the basis of the size of the aggregates as coarse aggregate and fine aggregate.
Objectives to understand the grading specification of the aggregates. Properties of aggregates also has effect on resulting concrete. J which physical and chemical properties are largely affected by surface area soil structure. Natural sand, crushed stone dust or manufactured sand by crushing rock. The current experimental study indicated that, the textural characteristics of fine aggregate are having a vital role of concrete properties at fixed fmvalues of fine aggregates. The role of fine aggregate can be described in few points. However, it is fact that wc does not influence the loss of physical and mechanical properties of concrete due to high temperature exposure. The effect of some soil physical and chemical properties. An experimental study on the properties of foam concretes, made with a proteinbased foam agent, containing fly ash fa as binder and granulated blast furnace slag gbs as fine aggregate is presented in this paper. Mar 11, 2017 aggregate aggregate is a broad category of coarse particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. The physical and chemical properties of cfa are given in tables 1 and 2, respectively.
Aggregate properties and use of indexes inside aggregate. This parameter is used as a screening tool to select. The test specimens consisted of a 1in cube, a viin cube, and three 0. The test is not applicable to sizes smaller than 6. Aci 2r03 guide for structural lightweight aggregate concrete and astm 169 d lightweight concrete and aggregates both are excellent references. Aggregates coarse aggregates 5 mm fine aggregates physical and mineralogical properties of aggregates must be known before mixing concrete to obtain a desirable mixture. Rocks that undergo volume changes due to wetting and drying are rare. Source almost all natural aggregate materials originate from bed rocks. Fine aggregates are the structural filler that occupies most of the volume of the concrete mix formulas. Each material was characterized for physical and chemical properties in accordance with the appropriate astm standards. One property is the modulus of elasticity of the coarse aggregate. En 932, tests for general properties of aggregates.
Concrete aggregates function, properties, characteristics. Jan 14, 2015 physical properties of aggregates strength hardness toughness durability porosity water absorption 12. Physical properties of structural lightweight concrete the information present in chapter 6 and 7 is also covered in a more general way in. We will also discuss about various indexes, etc that can be used inside aggregate properties. Physical properties of aggregates strength hardness toughness durability porosity water absorption 12. Properties of aggregates and its values for use in construction. High temperature influence on concrete produced by spherical. Physical properties effect soil texture on soil aggregate stability figure 5 and figure 6 showed the sand 23, silt24 and clay fractions 8, 25 have each been cited assoil. Please can you explain why it is necessary to limit the content of gypsum in the manufacture of ordinary portland cement. The detailed data on properties of these materials are reported elsewhere 14. Jan 20, 2020 however, it is fact that wc does not influence the loss of physical and mechanical properties of concrete due to high temperature exposure. Physical properties the physical properties of aggregates are those that refer to the physical structure of the particles that make up the aggregate.
Grading grading is the particlesize distribution of an aggregate as determined by a sieve analysis using wire mesh sieves with square openings. However, sieve test is very important in determining the gradation or aggregate particle presence within a given mixture. Specific gravity and absorption of fine aggregate a modification of aashto designation t 84 1. Aggregation creates intraaggregrate and inter aggregate pore space, thereby changing flow. Fine aggregates provide dimensional stability to the. The quality and fine aggregate density strongly influence the hardened properties of the concrete the concrete or mortar mixture can be made more durable, stronger and cheaper if you made the selection of fine aggregate on basis of grading zone, particle shape and surface texture, abrasion. The properties of the rock, from which the aggregates are formed, depend on the properties of constituent materials and the nature of bond. The effect of the using waste marble dust as fine sand on the mechanical properties of the concrete article pdf available in international journal of physical sciences 59. Currently, only the use of coarse aggregate derived from construction or demolition waste is recommended for use in new concrete construction. In this study tests on physical properties of fine aggregate are carried out in the laboratory for both natural sand and manufactured sand. Physical properties of aggregates 19 fine aggregate angularity traffic depth from surface esals 100 mm. The important characteristics of aggregates for concrete are listed in table 52 and most are discussed in the following. The whole sample is filled into a cylindrical steel cup firmly fixed on the base of the machine. Comparison of physical properties between natural sand and.
The specific gravity may be expressed as bulk oven dry o. Material passing 75 m sieve should not be 4% by weight. Aggregates consisting of materials that can react with alkalies in cement and cause excessive expansion, cracking and. It is based on increasing the amount of fine material without. Organic impurities are the only concern in fine aggregates. The arrangement and organization of soil particles in the soil, and the tendency of individual soil particles to bind together in aggregates. Fresh concrete was then casteconfirms to the requirements of is 12269 and the physical properties are given in table 1. Characteristic studies on the mechanical properties of.
Properties of aggregates construction aggregate porosity. The internal pore characteristics are very important properties of aggregates. Aim of this study is to study the possibility of replacing fine aggregate with mixture of plastic waste and glass waste in cement concrete. Fine aggregate degradation index of aggregate quality. Fine aggregate is the essential ingredient in concrete that consists of natural sand or crushed stone. As expected, a lightweight aggregate will have a lower modulus than.
Gradation cleanliness hardness abrasion, wear, and degradation aggregate shape the goal of this lesson is that you participate in at least one lab related to. Strength of aggregates in practice, majority of normal aggregates are considerably stronger than concrete a good average value of crushing strength of aggregates is 200nmm2. No restrictions are placed on organic impurities in fine aggregate for use in other types of construction. Baied on this finding, calcium aluminate cement and distilled water were mixed with the lunar soil to fabricate test specimens. Data can be simple single value or can be grouped and stored in pages. Freezing can cause internal stresses to build up as water inside the aggregate freezes and expands. The current manuscript presents a detailed study on physical properties of aggregates procured from all seventeen districts in gujarat. The methodology for determining the fractional parts of an aggregate particle, pores versus solids and interstitial voids in the bulk volume are shown. Typically, coarse aggregate sizes are larger than 4. Aggregate aggregate is a broad category of coarse particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates.
It is not possible to predict the strength and other concrete properties solely based on the. Development of a database for surface energy of aggregates. Aggregates coarse aggregates 5 mm fine aggregates pdf available. Physical properties of aggregates 10 fine aggregate angularity measured on 2. Its quality is of considerable importance because about threequarter of the volume of concrete is occupied by aggregates.
Physical properties of polyester polymer concrete composite using rcss fine aggregate p. Coarse aggregate is used to describe particles larger than 4. Test methods for other properties of aggregates will be covered by the following european standards. The properties of the end product depend not only on the various constituent materials listed above but also on the way they are proportioned and mixed, as well as on the methods of placing and curing the composite. Pdf the effect of the using waste marble dust as fine. Physical and mechanical properties of foam concretes. The purpose of the fine aggregate is to fill the voids in the coarse aggregate and to act as a workability agent. Aggregation creates intraaggregrate and interaggregate pore space, thereby changing flow.