IS 5640 (1970): Method of test for determining aggregate ...

0.4 In reporting the results of a test or analysis made in accordance with this standard, if the final value, observed or calculated, is to be rounded off, it shall be done in accordance with IS:2-1960t. 1. SCOPE 1.1 This standard covers the procedure for determining the aggregates impact value ofsoft coarse aggregate used for bases and sub ...

Standard Test Methods for Determination of the Impact ...

5.1 Impact Value, as determined using the standard 4.5 kg (10 lbm) hammer, has direct application to design and construction of pavements and a general application to earthworks compaction control and evaluation of strength characteristics of a wide range of materials, such as soils, soil aggregates, stabilized soil and recreational turf. Impact Value is one of the …

Experimental and Numerical Studies of Impact Behavior of ...

Two types of concrete with 0.0 % and 0.4 % PP fiber are made. The impact results of fiber reinforced lightweight aggregate concrete are compared with the reference no fiber mixtures. As the fibers substantially decrease the workability conditions, polycarboxylic base superplasticizer was used to improve the slump and workability of concrete.

Rebound Hammer Test on Concrete - Principle, Procedure ...

The points of impact on the specimen must not be nearer an edge than 20mm and should be not less than 20mm from each other. The same points must not be impacted more than once. Interpretation of Rebound Hammer Test Results. After obtaining the correlation between compressive strength and rebound number, the strength of structure can be assessed.

Impact Test on Aggregates - Gharpedia

The value of aggregate impact test should not be more than 45% by weight of aggregates, used for concrete other than wearing surface. An impact value 35% is permissible for the bituminous macadam. Maximum permissible impact value for the water bound macadam is 40%.

Sieve Analysis of Fine and Coarse Aggregates

SIEVE ANALYSIS OF FINE AND COARSE AGGREGATES TXDOT DESIGNATION: TEX-200-F CONSTRUCTION DIVISION 2 – 10 EFFECTIVE DATE: JANUARY 2016 3. PREPARING MATERIAL SAMPLE 3.1 Follow this method to prepare aggregate that has been sampled from a stockpile. Note 1—This sample preparation method is not applicable when performing a sieve analysis on material …

Study of the Mechanical Performance of a Recycled ...

Rebound Hammer Results. Although the rebound hammer test results are affected by many factors, such as the mix characteristics (cement type, content and the aggregate type) or the member characteristics (mass, density, surface type, age, curing type and surface carbonation), only the main factor of aggregate type is considered in this study [10 ...

Analysis of Impact Hammer Rebound to Estimate Rock ...

Analysis of Impact Hammer Rebound to Estimate Rock Drillability By X. Li1,2, G. Rupert2, D. A. Summers2, P. Santi2, and D. Liu1 ... Schmidt Impact Hammer and in a drill with a down-hole hammer. The analytical results not only provide a better understanding of the range and conditions for ... Analysis of Impact Hammer Rebound 3.

Impact Testing for Modal Analysis - YouTube

May 12, 2011· Using a Dytran () impact hammer and tri-axial accelerometer, the modes of a simple I-beam are determined and animated using Vibrant Technology's ME'scopeVES ().

Aggregate Impact Value Calculator, Test on course and Fine ...

Aggregate Impact Value = W B W A × 100. Where, W A is Weight of oven-dried sample; W B is Weight of fraction passing through 2.36-mm IS Sieve; Reporting of Results. The mean of the two results shall be reported to the nearest whole number as the aggregate impact value of the tested material.

09 Impact testing - Nuffield Foundation

the pendulum hammer or the drop weight, (b) the height of the drop. What data will you collect? How will you process these data? Can you calculate the impact energies and the impact velocities? Results you obtain will be for the size and shape of test specimens you use. ... Impact testing is about resisting impact. This is often called a ...

Estimating the Strength of Concrete Using Surface Rebound ...

the Schmidt rebound hammer test [3,4]. This device is universally used because of a hardened steel hammerim-pacted on the concrete by a spring. The RHT is a con-venient NDT. The surface of hardened concrete is struck with the hammer, and concrete compressive strength is estimated via the surface hardness rebound value. In 1979,

Clegg Hammer—California-Bearing Ratio Correlations

The test results of both phases were statistically analyzed ... aggregate-surfaced pavement layers using the CIH despite the ... Fig. 1. Schematic representation of the Clegg impact hammer JOURNAL OF MATERIALS IN CIVIL ENGINEERING / NOVEMBER/DECEMBER 2002 / 513.

Impact Test Apparatus Wholesale, Impact Testing Suppliers ...

Alibaba.com offers 302 impact test apparatus products. About 96% of these are testing equipment. A wide variety of impact test apparatus options are available to you, such as impact testing machine, universal testing machine, and drop tester.

Crushed aggregate response upon impact in dry and wet ...

Crushed aggregate response upon impact in dry and wet conditions Nikolaos Petropoulos1, Daniel Johansson1 and Erling Nordlund1 Abstract This paper presents results from a series of impact tests upon coarse-grained crushed aggregate. The material has been evaluated for two conditions, i.e. dry and wet (pendular state).

What Is a Hammer Test or Hammer Impact Test?

Dec 06, 2016· If you need to perform hammer impact tests (also known as bump testing, tap testing, or hammer resonance testing) then take a look at the Prosig Hammer Impact Test System. Prosig's solution is not only the most simple to use and understand, but its reliable giving perfect results …

Quantifying the Role of Coarse Aggregate Strength on ...

aggregate-related and performance-related tests were identified and the optimum test methods were recommended. Based on these activities, several tests for characterizing and ranking aggregates were proposed. From the tests characterizing the aggregate point and bulk strength results, the Aggregate

example lab report of aggregate impact test

Example Lab Report Of Aggregate Impact Test . aggregate impact value test lab report example. aggregate impact value test lab report example. Paired Sample t Test | Real Statistics Using Excel. How to use the t test in Excel to determine whether two paired samples have equal means.

Aggregate Impact Value - engineeringcivil.com

The apparatus used for determining aggregate impact value of coarse aggregates is Impact testing machine conforming to IS: 2386 (Part IV)- 1963,IS Sieves of sizes – 12.5mm, 10mm and 2.36mm, A cylindrical metal measure of 75mm dia. and 50mm depth, A tamping rod of 10mm circular cross section and 230mm length, rounded at one end and Oven.

Analysis of Recycled Portland Cement Concrete Subbase ...

Nov 15, 2013· In case a subbase layer was very stiff, results of the Clegg Impact hammer tests were outside of measurement range. Althou gh the Clegg impact hammer tests conducted on the subbase surface s while the DCP presented the subbase strength with depth, their results consistently reflected the subbase stiffness (Figure 6).

Impact Hammers | PCB Piezotronics

Each PCB® Modally Tuned®, ICP® instrumented impact hammer features a rugged, force sensor that is integrated into the hammer's striking surface. "Modal Tuning" is a feature that ensures the structural characteristics of the hammer do not affect measurement results.

Aggregate Impact Value - Civil Engineering

The apparatus used for determining aggregate impact value of coarse aggregates is Impact testing machine conforming to IS: 2386 (Part IV)- 1963,IS Sieves of sizes – 12.5mm, 10mm and 2.36mm, A cylindrical metal measure of 75mm dia. and 50mm depth, A tamping rod of 10mm circular cross section and 230mm length, rounded at one end and Oven.

(PDF) Impact of the Grain-Size Distribution of the Fine ...

Impact of the Grain-Size Distribution of the Fine Aggregate Cement Composites on the Rebound Hammer Test ... the rebound hammer test results of cement composites. ... Static and dynamic analysis ...

Aggregate impact and - SlideShare

Feb 08, 2012· Aggregate impact and ... rapid and gives fairly consistent results.Applications of Aggregate Crushing Test It The aggregate crushing value is an indirect measure of crushing strength of the aggregates." ... The hammer is raised until its lower face is J§. cmal2gve the upper surface of the aggregates in the cup,and allowed to fall freely on the ...

DETERMINATION OF AGGREGATE CRUSHING VALUE

The mean of the two results shall be reported to the nearest whole number as the aggregate impact value of the tested material. Aggregate impact value is used to classify the stones in respect of their toughness property as indicated below in Table 1. Table 1: Classification of aggregate based on aggregate impact value

VIBRATION ANALYSIS BASED ON HAMMER IMPACT TEST …

VIBRATION ANALYSIS BASED ON HAMMER IMPACT TEST FOR MULTI-LAYER FOULING DETECTION Jaidilson Jó da Silva 1,2, Antonio Marcus Nogueira Lima 2, Franz Helmut Neff 2 and José Sérgio da Rocha Neto 2 1 Universidade Federal Rural do Semi-Árido, Departamento de Ciências Exatas e Naturais, Mossoro-RN, Brazil, [email protected]

Chapter Two - The National Academies Press

Washington, DC: The National Academies Press. doi: 10.17226/22469. ... Analyzing results obtained across 32 laboratories, the study concluded that aggregate size and shape proper- ties determined using the AIMS2 device showed reason- able coefficients of variation for all aggregate particle sizes greater than 0.075 mm. Findings from the study ...

Aggregate Analysis, Content Analysis, and "Big Data ...

--presents fewer issues in collection than survey and content analysis--aggregate indicators missing in developing countries--exists at different levels which leads to different results (results apply only to the level which analysis is done)--ecological fallacy--relationships on aggregate level do not always apply to …

Determination of Aggregate Impact Value - Impact Test on ...

The aggregate impact value is a measure of resistance to sudden impact or shock, which may differ from its resistance to gradually applied compressive load. Procedure o f Aggregate Impact Test The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating at 100-110° C for a period of 4 hours and cooled.

Influence of Moisture of Light-Weight Concrete Containing ...

Moisture of light-weight concrete containing lightweight aggregate influences rebound number of Schmidt impact hammer. As to Schmidt impact hammer type N (2.25 Nm impact energy), rebound number on dry concrete exceeds the one on waterlogged concrete by 21 %.