ويركزمعهد بحوثالعامة لليمينغ الصناعة الثقيلةفي مجال البحوث وتطوير التكنولوجيا المتقدمة والمنتجات الموجهة لصالح العملاء، فضلا عن بناءالقدرة التنافسية الجوهريةليجعل يمينغالصناعة الثقيلةرائدةفي هذه الصناعة.من خلال توفيرنتائج البحوثالأساسية، ويدعم المعهديمينغالصناعة الثقيلةالتكنولوجيا والمنتجات لتكون أعلىمنهافي العالمالقائمة.
معهد بحوثالعامة لليمينغ الصناعة الثقيلةهيقسم البحث والتطويرالأوليةللبحوثالتقنيةوالإدارة التقنية. وهي مسؤولة عنتطوير التكنولوجياالمطبقة علىيمينغجميع المنتجات، وإجراء البحوث الفنيةمقدمةعلى المنتجات الجديدةووضعالمعايير؛البحثالاهتزاز، والأثر، والضوضاء، والتكنولوجيا الهيدروليكية، والمطابقة الطاقةوتوفير الطاقة، والمواد الجديدة، وأنظمة التحكم، وخلق تكنولوجياتمبتكرة ومنتجاتحمليوبناءمنصة علىشبكة خاصةوعامةللتجاربوالاختباراتوذلك لتبادل التجربةالعامة ونتائج الاختبار.
Compaction Factor Value= (W1W) / (W2W) Result of Compaction Factor Compaction factor of the concrete = The Compaction factor The slump and compacting factor test values shown below are of concretes with 20mm or 40mm maximum size of aggregates Read More: Various Concrete Slump and Compacting Factor Test Values
4 行Compaction Factor Value Standard of Workability: 095: Good 092 Medium: 085: LowThe standard cubes (150mmX150mmX150mm), cylinders (150mmdiaX300mm height) and prisms Concrete, Strength and Portland Cement ResearchGate, the professional Slump and Compaction factor values of M40 and M50 grades
The slump test to BS 1881: Part 102/BS EN 123502 and the flow table test to BS 1881: Part 105/BS EN 123505 involve measurement of the concrete when deformation under a 4 行Standard of Workability Value of Compaction Factor Slump Value (mm) Good/High: 095: 100Compaction Factor Test For Concrete Workability Civil
This is how the compaction factor test is conducted and its value is calculated The value of this factor ranges between 07 and 095 According to the Similarly, estimating the MDD through laboratory tests is crucial in order to calculate the relative compaction value and make sure that the field dry density The Estimation of the compaction parameters of aggregate base
If you are checking the field compaction of a layer of soil and the compaction curve for the soil is shown in Figure 1 From the specifications, the dry density of the compacted soil should be at least 95% of the maximum value and within ±1% of the optimum water content When you did the sand cone test, the volume of the soil excavated wasValue of Max dry density (MDD) = 2221 gram/cc = 2221 Kg/ cubic metre Compaction Factor = (MaxDry Density/Density of Blended Aggregate ) =2221/ 170 =1307 = 130 Hence compaction factor = Granular Subbase Base (GSB) quantity / Compaction
Value of Max Dry Density (MDD) = 2441 gram/cc = 2441 Kg/cubic metre Compaction Factor = (MaxDry Density/Density of Blended Aggregate ) =2441/ 180 =13561= 136 Hence compaction factor = 136 3 How much loose thickness should be taken to get proper compacted layer thickness ? Compaction factor = 136 Thickness of Fig 2: Compaction Factor Apparatus with Allied Tools Compacting Factor Apparatus, Trowel, Scoop about 150 mm long, Tamper (16 mm in diameter and 600 mm length), Ruler, etc Fig 3: Dimensions of Compaction Factor Apparatus: 3 reference IS 1199:1959 Methods of Sampling and Analysis of Concrete (Eleventh revision)Workability of Concrete by Compaction factor Test
Standard of the test We carry out test as per IS 1199:1959 Method of Sampling and analysis of Concrete (Eleventh Revision) Reaffirmed If the compaction factor value is close to 07, this concrete is suitable for road pavement and value of about 095 shows highly strengthened concreteIS 27208 (1983) is a standard for methods of test for soils, Part 8: Determination of water contentdry density relation using heavy compaction It specifies the procedure and equipment for obtaining the maximum dry density and optimum moisture content of soils by heavy compaction This test is suitable for soils with maximum particle size of 19 mm IS 27208 (1983): Methods of test for soils, Part 8: Determination of
Factors that can affect compaction factor result 1 Material used for filling is not same as which we had tested in third party lab or own lab for MDD and OMC 2 If doing sand replacement test, the density of standard sand need to be verify before each test and also the value of mass of sand in cone should be reverified 3The deviation value was used to demonstrate the deviation degree of the test value from the standard value when the detection spacing was increased from 10 m to 20 m, 50 m and 100 m It was expected to be as close to zero as possible, which would imply that there were only a slight degree of deviation The calculation results are shown Research on Distribution Model and Detection Spacing of Compaction
IS 5515 : 1983 is a standard for the specification of high tensile strength deformed steel bars and wires for concrete reinforcement It covers the requirements, methods of sampling and testing, and marking of the products It also provides guidance on the selection and use of these materials for various types of structures This standard is a revision of IS: 5515 Disadvantages The disadvantage of compaction factor test is as follows; Due to the large and bulky nature of the device, its use reduces in the field This method requires a balance to measure the mass of the concrete in the cylinder In this method, there is no use of vibration and it is used paction Factor Test Civil Concept
The required soil compaction factor (according to SNiP 3020187) for backfill or embankment is presented in table 1 Table 1 Soil compaction factor For example, the value of the compaction coefficient of the backfill soil made of sand, the filling capacity of 25 m and the load on the embankment of 03 MPa is 95 %Similarly, estimating the MDD through laboratory tests is crucial in order to calculate the relative compaction value and make sure that the field dry density The developed ANNs can be used for the prediction of the compaction parameters instead of the standard Proctor test with high accuracy (R 2 = 0911 and 0826 for OMCEstimation of the compaction parameters of aggregate base
Wet mix macadam (WMM) act as a base course just below the bituminous layer (bitumen base course or surface course) The thickness of a single compacted Wet mix macadam (WMM) layer shall not be less 40 08495 The mix with 40% PETFA has almost 2 mm slump while it has a compact factor of about 085 (hard concrete) The compact factor test is more sensitive to mix with low slump value, that is, low workability Other researchers were also investigated about effect of PET fine aggregate on slump of pacting Factor Test an overview ScienceDirect Topics
Compacting factor test is adopted to determine the workability of concrete where the nominal size of the aggregate does not exceed 40 mm It is based on the definition, that workability is that property of concrete, which determines the amount of work required to produce full compaction The test consists essentially of applying a standardCompacting factor Use for which concrete is suitable Small apparatus Large apparatus Very low078 080 Roads vibrated by poweroperated machines At the more workable end of this group, concrete may be compacted in certain cases with handoperated machines Low 25 75 085 087 Roads vibrated by handoperated machinesConcrete Slump and Compacting Factor Test Values and Uses
The compacting factor test was established in the United Kingdom and documented in BS 1881103: 1993 It is suitable for aggregate sizes up to 40mm This test operates on the principle of determining the amount of compaction achieved by a standard amount of effort done by letting the concrete to fall through a specified heightSoil compaction factor indicates the level of soil compaction Its value ranges from 0 to 1 For a concrete base strip foundation an indicator of> 098 points is considered the norm Specificity of determining the compaction coefficient The density of the skeleton of the soil, when the subgrade is amenable to standard compaction, is calculatedCompaction coefficient of sand and gravel table Technological
Changes in the value of slump obtained during job may indicate From what we have learned in this experiment is that we can determine the workability of concrete mix by finding the compaction factor The standard quantity of work is provided simply by allowing the concrete to fall under gravity through a standard distance from the
