Compaction Factor Test – Workability of Concrete. 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. The compacting factor test has been developed at the Road Research Laboratory in United Kingdom.
Fundamentals of Compaction: The fundamentals of compaction were first time presented by RR. Proctor in 1933, in his honor; the standard laboratory compaction test which is developed is commonly called the Standard Proctor Test. According to Proctor, the compaction of a soil mass is dependent on the following four major factors: 1. Soil type, 2.
Figure 4 Effects of compactive effort on compaction curves It can be seen from this figure that the compaction curve is not a unique soil characteristic. It depends on the compaction energy. For this reason it is important when giving values of (γdry)max and mopt to also specify the compaction procedure (for example, standard or modified).
compaction to determine if any significant particle breakage occurred during the compaction process. Several soils were selected for additional testing to determine the amount of compression produced when the soils were subjected to load and, subse-quently, inundated with water. The objective of these tests was to determine what compaction levels
Oct 29, 2015· Fill in the cylinder with fresh concrete in layers not exceeding 5 cm in thickness and compact each layer till 100 percent compaction is achievd. Wipe off and clean the outside surface of the cylinder and weigh the cylinder with fully compacted concrete nearest to 10 g. Calculate the value of compaction factor using the following formula.
SOIL COMPACTION HANDBOOK 3 What is soil? ... The soil reference value is expressed as a percentage of density. These values are determined before any compaction takes place to develop the compaction specifications. Modified Proctor values are higher because they take into account
Dec 27, 2014· This is a continuation of the previous article I posted How to do a compaction test or In-situ density test, about the calculation of the compaction test report.Here we are going to compute the bulk density of sand down to the degree of compaction of soil.. I would really want to pursue this article just to completely show the full process of getting the results of the test from taking the ...
Table 10-1 lists conversion factors for various types of soils. These factors should be used when you are preparing a table of cumulative yardage for a mass diagram. Cuts are indicated by a rise in the curve and are considered positive; fills are indicated by a drop in the curve and are considered negative.
How to Calculate the Soil Compaction Factor By Jack Burton. SAVE; Proper soil compaction ensures that things stay in place after they are built. Whether it's an underground pipe, a sidewalk, a home, or a skyscraper, it all depends upon the soil being stable, and not moving due to water or further compression. Various machines compress soil, but ...
Compaction factor is a ratio of the weight of partially compacted concrete to the weight of fully compacted concrete, which is directly correlated with workability. Similar to slump, the compaction factor also decreased with the increase of PVC fibres content. Nidhish and Arunima (2017) observed a decrease of the compaction factor by about 6.67% at 0.25% fibre content (Fig. 17.4).
Recommended Compaction Requirements for Placement of Uniform Fine Sand Backfill Materials Objective and Scope of Project The objective of this project was to develop recommendations for com-paction of cohesionless soils used as backfill materials. The Texas Department of Transportation (TxDOT) utilizes a number of sources of cohesionless soils ...
Jan 27, 2019· However, the compaction effort does not have any significant effect on the value of optimum moisture content. Now that I have explained the basics of soil compaction and background of the standard proctor test, so let's move on to the procedure. Standard Proctor Test and Optimum Moisture Content Standard proctor test is carried out to
Compaction: Increasing density 6. Disposal Productivity Factors A. Job conditions Material type Water level and moisture content Job size Length of haul Haul road condition (accessibility and load restrictions) Productivity Factors (cont.) B. Management conditions Equipment conditions and maintenance practices Skills of work force and ...
Soil and rock expansion - or swell - after mining. Related Topics . Miscellaneous - Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more; Related Documents . Conveyors - Maximum Inclination - Maximum conveyor slopes for various materials ; Densities of Common Materials - Densities of common products in both Imperial and SI-units
standard value of compaction factor. ... Calculation of Compaction Factor Value The compaction factor is defined as the ratio of the weight of partially compacted concrete to the weight of fully compacted concrete. It shall normally to be stated to the nearest second decimal place.
Jun 15, 2014· Compacting Factor = =11.3/13.4 = 0.843. Comments: For the normal range of concrete the compaction factor lies between (0.8 – 0.92 ). The value of compactness factor tells us that the workability of concrete is Low but the slump value tells us that the workability is Medium.
content achieved by standard Proctor Tests (ASTM D698) with plastic limit (PL) and liquid limit (LL). This is a key figure to consult when compacting expansive clay soils. Taken from "Factors Influencing Compaction" (1962), HRB Report 319.
Guidelines for Earthwork Construction Control Testing of Gravelly Soils 2 given in standard procedure USBR 7255  where percent compaction is defined as: For soils containing about 10 to 15 percent more fines and where water is required for adequate compaction, the laboratory maximum density is evaluated by the
D698-12e2 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12 400 ft-lbf/ft3 (600 kN-m/m3)) density~ water content~ particle size~
Mar 22, 2018· By this, I assume you mean 95% RELATIVE compaction. What is meant by this is the field-tested material, after placement and subgrade improvement, has a density equal to or greater than 95% of the laboratory density, as determined using the Standar...
Following tables shows the degree of concrete workability based on the results of slump tests and compacting factor tests. The range of results of each these tests indicates the suitable uses of concrete work. The slump and compacting factor test values shown below are of concretes with 20mm or 40mm maximum size of aggregates.
Oct 28, 2014· Generally we specify workability of concrete in terms of its slump test value. But sometimes it is also specified by another test called compaction factor. The relation between slump and compaction factor is roughly as follows. Relation Between Slump & Compaction factor Workability Slump in mm Compaction factor Very stiff – 0.70 Stiff 0 to […]
Compaction is a process that brings about an increase in soil density or unit weight, accompanied by a decrease in air volume.There is usually no change in water content.The degree of compaction is measured by dry unit weight and depends on the water content and compactive effort (weight of hammer, number of impacts, weight of roller, number of passes).
compact layers of soil in a standard mold. The test is used to define the ... density, both values have to be determined. A separate radioactive source is necessary for each technique. The nuclear gauge may have a radioactive source ... Soil and Aggregate Compaction
Backfill Specification MRWA Specification 04-03.2 ... Correct trench backfill and compaction is a critical success factor for the projects requiring backfill. Incorrect backfill and compaction by contractors causes the Water Agency to incur ... a controlled laboratory compaction process, e.g. Standard Compaction, AS 12126.96.36.199. Dry
Experiment :- To determine the workability of Fresh Concrete of given proportions by Slump Test and Compacting Factor Test. 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 ...
Nov 15, 2017· Compaction factor test of concrete:-The compacting factor test is performed to find out the workability of concrete. Slump test doesn't give accurate results for the low workability of concrete when the slump is <50mm. Here to dealt with Compaction factor test used for …
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.The test is named in honor of Ralph R. 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 compaction.
COMPACTING FACTOR. Compacting factor of fresh concrete is done to determine the workability of fresh concrete by compacting factor test as per IS: 1199 – 1959. The apparatus used is Compacting factor apparatus. Procedure to determine workability of fresh concrete by compacting factor test.
Compaction Factor Test for Concrete Workability. Compaction factor test is the workability test for concrete conducted in laboratory. The compaction factor is the ratio of weights of partially compacted to fully compacted concrete. It was developed by Road Research Laboratory in United Kingdom and is used to determine the workability of concrete.
Workability Of Fresh Concrete By Compaction Factor Test: Compaction Factor Test Machine Theory: 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.