Compacting factor test to determine its workability. Civil engineering animated videos, civil engineering videos social media. The compacting factor is the ratio between the weight of the concrete which is partially compacted in the cone to the weight of the fullycompacted concrete in the cylinder. Compacting factor the degree of compaction is also called the compacting factor and is measured with the help of density ratio that is the ratio of density actually achieved in the test to the density of same concrete when it is fully compacted. Compacting factor apparatus consists of two conical hoppers mounted above a cylindrical mould and. They introduced a factor called packing factor pf for aggregate. This test is more appropriate for the concrete mixes of very low workability that is commonly compacted through vibration. The concrete should be filled to the brim of the hopper and level it of with trowel. Proctor soil compaction test procedures, tools and results. The method applies to plain and airentrained concrete, made with.
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. Compaction factor test is classified into two sections viz. Open the trapdoor at the bottom of the upper hopper so that concrete fall into the lower hopper. Compaction factor test is designed in such a way that it can be used only in laboratory but in some cases, it can be used for field concrete tests. Workability of concrete compacting factor test civil4m. The concrete slump test is referred to in several testing and building code, with minor differences in the details of performing the test. The kelly ball test details of the test procedure and the ballpenetration apparatus are given in astm c360. Compaction factor test for concrete workability method. This paper describes a procedure specifically developed to achieve selfcompacting concrete. Concrete compacting factor test free download as powerpoint presentation. Oct 29, 2015 different test methods for workability measurement depending upon the water cement ratio in the concrete mix, the workability may be determined by the following three methods. The compaction factor test gives the behavior of fresh concrete under the action of external force. Compaction factor test, measurement of workability.
Compacting factor apparatus consists of two conical hoppers mounted above a cylindrical mould and fixed to a stand. Lbox test experimental procedure the procedure adopted in the study is as follows 1 using japanese method of mix design, initial mix design was carried out at coarse. Although the most common method of determining workability is the slump test, it does not give an accurate result for the concrete with less workability, especially then the workability is. It states in the procedure that when the cone is removed, it should be lifted up vertically, without any rotational movement at all. With the help of a trowel, fill the freshly prepared concrete in the top upper of the apparatus. Workability test units efnarc guidelines slump flowdia mm 650800 uboxh2h1 mm 030 l boxh2h1 0. The compaction factor test is carried out to measure the degree of workability of fresh concrete with regard to the internal energy required for compacting the concrete thoroughly. It uses super plasticisers and stabilizers to significantly increase the ease and rate of flow. The two tests, compacting factor and degree of compactability are quite different. To determine the workability of concrete mix of given proportions by compacting factor test. Its maximum answer is 1 but practically it is lesser than 1. To assess the workability of concrete using compaction factor test apparatus compaction factor apparatus trowels hand scoop 15. The compaction factor test is used for concrete which have low workability for which slump test is not suitable.
Compacting factor test of concrete we civil engineers. Workability of a concrete signifies the full compaction of concrete using a required or reasonable amount of work which helps to achieve the desired possible density or void of fresh concrete resulting better strength and durable concrete structure and helpful to maintain. Compacting factor apparatus utest material testing equipment. A simple tool has been designed for self compacting concrete scc. Different test methods for workability measurement depending upon the water cement ratio in the concrete mix, the workability may be determined by the following three methods. Compaction factor test workability of concrete the. In addition, the test results for acceptance characteristics for selfcompacting concrete such as slump flow, jring, vfunnel and lbox are presented.
Soil compaction soil compaction is defined as the method of mechanically increasing the density of soil. Seay supervising field engineer research report 902f research study number 266590 sponsored by. Compaction factor test of concrete for low workability. Slump test doesnt give accurate results for the low workability of concrete when the slump is may 18, 2018 this video animation, animated video explains the procedure for determination of workability by compaction factor test. May 10, 20 objective for determination of consistency of concrete where the nominal maximum size of aggregate does not exceed 38 mm using compacting factor test apparatus. Compacting factor apparatus b185 alfa testing equipment. The compacting factor test is performed to find out the workability of concrete.
If performed improperly, settlement of the soil could occur and result in unnecessary maintenance costs or. Although the most common method of determining workability is the slump test, it does not give an accurate result for the concrete with less workability, especially then the workability is less than 50 mm. Pdf workability tests and rheological parameters in self. Compaction of soil is the optimal moisture content at which a given soil type becomes most dense and achieve its maximum dry density by removal of air voids. Hence to overcome these defects the selfcompacting concrete is used. The method applies to plain and airentrained concrete, made with lightweight, normal weight or heavy aggregates having a nominal maximum size of 38 mm or. Sampling concrete mix m15 is blended according to the specified mix design in the laboratory. The selfcompacting concrete flows easily at suitable speed into formwork without blocking through the reinforcement without being heavily vibrated. The apparatus is designed to perform the test in a more precise and accurate way. Properties of fresh concrete university of washington. Selfcompacting concrete is a flowing concrete mixture that is able to consolidate under its own weight. This method is adopted for determining the workability of concrete mix in laboratories. In current scenario of construction industries due to demand in the construction.
Compacting factor apparatus, concrete testing equipment, controls. Proctor test astm d155791 the proctor, or modified proctor test, determines the maximum density of a soil needed for a specific job site. Procedure the sample of concrete to be tested is placed. Workability of concrete compacting factor test nctel. Scope this standard covers the test method for slump flow of self compacting concrete with a maximum coarse aggregate size of 40 mm or less. The compacting factor test is designed primarily for use in the laboratory but it can also be used in the field.
Slump test suitability this method is suitable only for the concrete of high workability. The test is named in honor of ralph roscoe proctor, who in 1933 showed that the dry density of a soil for a given compactive effort depends on the amount of water the soil contains during soil. W is the estimated consistency parameters which include slump, compacting factor and vebe time, corresponding to a given pcfamk concrete mix. Further, the strength characteristics in terms of compressive. It is more precise and sensitive than the slump test and is particularly useful for concrete mixes of very low workability and normally used when concrete is to be compacted by vibration. In 2001, nansu e al conducted experimental studies and tests on concrete for achieving selfcompacting property and finally given a simplest procedure called. 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. Compaction factor test is the workability test for concrete conducted in laboratory. Compaction factor test of concrete for low workability concrete. Compaction test of soil is carried out using proctors test to understand compaction characteristics of different soils with change in moisture content. The compacting factor test is designed primarily for use in the laboratory but it can also be. A similar analysis to slump was carried out for compacting factor based on the standard compacting factor test results as shown in fig. This standard covers the test method for slump flow of selfcompacting concrete with a maximum coarse aggregate size of 40 mm or less. The astm standards also regulate the rigidity of the cone.
Test on fresh concrete by compaction factor year 3 youtube. In this paper presents an experimental procedure for the design of selfcompacting concrete mixes. Slump test doesnt give accurate results for the low workability of concrete when the slump is workability of concrete. The test first determines the maximum density achievable for the materials and uses this figure as a reference. Jan 24, 2018 workability of concrete compacting factor test aim. May 22, 2012 in slump test we have to provide a uniform base and it requires 4 times for compacting the concrete to fill the cone while without disturbing the bottom layer of concrete. Sep 04, 20 workability of concrete compacting factor test nctel. See that the inner surfaces of conical hoppers should be free from moisture and apply grease to it. It was developed by road research laboratory in united kingdom and is used to determine the workability of concrete. Compacting factor of fresh concrete is done to determine the workability of fresh concrete by compacting factor test as per is.
The compaction factor is the ratio of weights of partially compacted to fully compacted concrete. Compaction factor test slump cone test does not give good results in case of stiff or harsh concrete. The procedure totally depends upon the packing factor pf. The line of optimum moisture contents is usually around 85% saturation and the optimum moisture content decreases with increasing compactive effort. Compaction of soil is the optimal moisture content at which a given soil type becomes most dense and achieve its. It is the ratio of mass of aggregates in tightly packed state to the one in loosely packed state.
The compacting factor test is conducted to determine the workability of fresh concrete. For the compacting factor test, the top hopper is filled with concrete. Experimental studies on m30 grade self compacting concrete. In slump test we have to provide a uniform base and it requires 4 times for compacting the concrete to fill the cone while without disturbing the bottom layer of concrete. Compaction tests results vary with the input compactive effort, usually measured in foot pounds per cubic foot of soil. Procedure to determine workability of fresh concrete by compacting factor test. Workability, slump and compacting factor of concrete with 19 or 38 mm 34 or 1 1 2 in maximum size of aggregate. The compacting factor test has been developed at the road research laboratory in united kingdom. Selfcompacting concrete procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta figure 2. The relative proportions of key components are considered by volume rather than by mass. Slump test compaction factor test veebee consistometer test 1. This document describes 61 test methods for measuring concrete. Compacting factor article about compacting factor by the.
The compacting factor apparatus is used to determine the compaction factor of concrete with low, medium and high workability. Compacting factor apparatus, balance, weights, trays, tamping rod and trowels. Slump test and compacting factor test of fresh concrete. If performed improperly, settlement of the soil could occur and result in unnecessary maintenance costs or structure failure. Compacting factor test to determine its workability civil. Harper formerly assistant research engineer william w. Compaction factor test workability test of fresh concrete. The concrete slump test is known as standard test method for slump of hydrauliccement concrete and carries the code astm c 143 or aashto t 119. The utc0580 compacting factor apparatus is used to determine the compaction factor of concrete with low, medium and high workability. In this test, the compaction achieved through a free fall of concrete determines its. Workability of fresh concrete by compacting factor test. What is the different slump test and compacting factor. Selfcompacting concrete scc is a flowing concrete that does not require vibration and, indeed, should not be vibrated. Compacting factor apparatus, concrete testing equipment.
This has now been withdrawn and replaced by bs en 123504. The proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density. Workability tests and rheological parameters in selfcompacting concrete article pdf available in materials and structures 427. Workability of concrete compacting factor test youtube. Compacting factor test lee chun yee 0321748 yee algel 0315890 yong boon xiong 0321754 gan jet foong 0315998 khoo xin yee 0316180 hi i pai ling 0320598 2. Compaction factor test for concrete workability method and. This method was found that it was impractical to measure that the work required to produce a given degree of compaction. Compacting factor test is an experiment that determines the consistency of freshly mixed concrete. Compaction factor test civil engineering lab experiment duration. Nemati winter quarter 2015 5 cm 425 concrete technology 9 slump test cm 425 concrete technology 10 properties of fresh concrete the most important properties of fresh concrete are thus associated with its workability and consistency. May 06, 2016 compaction factor test slump cone test does not give good results in case of stiff or harsh concrete.
Summary of concrete workability test methods the university of. Place the concrete sample gently in the upper hopper to its brim using the hand scoop and level it. Most concrete must be compacted after it has been placed in the. Push the concrete sticking on its sides gently with the road. To determine the workability of fresh concrete of given proportions by slump test and compacting factor test. Objective for determination of consistency of concrete where the nominal maximum size of aggregate does not exceed 38 mm using compacting factor test apparatus. What is the different slump test and compacting factor test. Why is compaction factor test better than slump test for. Comprising two conical hoppers having a hinged trap door attached to the lower end of each hopper, allowing the concrete sample to flow freely into the cylindrical mould.
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