2020-01-27 · Many researches focus on the effect of interfacial friction on Split Hopkinson Pressure Bar (SHPB) tests of concrete materials, in which SHPB is one of the most widely used techniques for determination of the dynamic stress–strain response.
The SHPB system (see Fig. 2) utilized in this experiment is located in the State Key Lab for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing. The bar used in this SHPB system is a 35 CrMn steel pressure bar with an elastic modulus of 206GPa and a density of 7800 kg/m 3.
2017-04-07 · Experimental Investigation based on Natural Fibres Banana and Jute in Concrete M.Dilipan1 S.Ramkumar2 S.Karthick3 1,2PG Student 3Assistant Professor 1,2,3Department of Civil Engineering 1,2,3Valliammai Engineering College, Chennai India Abstract—generally concrete is good in compression and weak in tension.
The incident wave and transmission wave varying with the time have been obtained by SHPB experiment. The relationship curve for stress and strain of material concrete has also been obtained. The Weibull function is used to describe the damage factor of the concrete.
2020-04-18 · It reveals that currently-used DIF formulae based on SHPB tests greatly over-estimate the dynamic compressive strength of concrete-like materials at strain-rates between 101 and 103 s-1 due to the significant contributions from inertia-induced radial confinement. 2 Numerical SHPB experiment based on FEA
SHPB is listed in the World's largest and most authoritative dictionary database of ... Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size. studied the effects of JMC and spatial geometries of the joint on wave transmission by the modified SHPB experiment ...
experimental research with the rapid development in SFRC technology. Mohammadi and Bischoff et al. ,  respectively using a drop-hammer machine and SHPB studied the impact resistance and dynamic mechanical properties of SFRC by experimental test. It had been observed that the concrete containing fibres at 2.0%
Use of Blast Furnace Slag Aggregate in Concrete K.G. Hiraskar and Chetan Patil Abstract-The Iron industries produce a huge quantity of blast furnace slag as by–product, which is a non–biodegradable waste material from that only a small percentage of it is used by cement industries to manufacture cement.
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2.2 Experimental apparatus of SHPB and its basic principles. Dynamic compressive and tensile strength tests on the outburst‐prone and outburst‐resistant coals were conducted using the SHPB system at the State Key Laboratory for GeoMechanics and Deep Underground Engineering.
The dynamic compressive behavior of concrete is investigated using a Φ 74-mm variable cross section straight taper split Hopkinson pressure bar (SHPB) apparatus in this study. In order to reduce and eliminate the waveform dispersion effect, two pulse shaping techniques are adopted to improve the incident wave shape.
It is an experimental device that can be used to effectively study the dynamic constitutive relations of different materials at high stress–strain rates and was invented by Kolsky in 1950 (Kolsky 1949). The SHPB is also a powerful technique for evaluating different types of material damage.
The dynamic behaviour of normal strength concrete-filled steel tubes (CFT) at elevated temperatures up to 800 °C under axial impact loading was experimentally studied by using a newly developed spilt Hopkinson pressure bar (SHPB) together with an electrical furnace. The effects of high temperature, impact velocity, steel ratio and slenderness ratio on the impact behaviour of CFT at ...
The experimental results presented here, obtained as part of a research investigation carried out at the Politecnico di Milano, aim to highlight the performance of a composite material, generally known as Textile Reinforced Concrete, for use in precast structures.
Zhou et al. , conducted experimental and numerical investigations on the dynamic characteristics of concrete and mortar at strain rates up to order of 10 4 s −1 and pressures up to 1.5 GPa, where the split Hopkinson pressure bar (SHPB) technique and the plate impact technique as well as the dynamic finite element (FE) simulations were ...
Experimental Investigation on Strength of Glass Powder Replacement by Cement in Concrete with Different Dosages Rakesh Sakale Sourabh Jain HOD M. Tech Scholar Department of Civil Engineering Department of Civil Engineering Patel Institute of Technology Bhopal Patel Institute of Technology Bhopal Seema Singh M. Tech Scholar
Experimental investigations into sacrificial support for containment of rockburst damage A Mudau et al. 436 Deep Mining 2017, Perth, Australia the compressive seismic wave passes through the rock/concrete contact and then reflects at the concrete/air interface, since air cannot sustain the passage of compressive waves. On reflection, the
Abstract: This paper presents an experimental study on the dynamic compressive behaviour of polypropylene (PP) ﬁbre reinforced concrete under various strain rates using split Hopkinson pressure bar (SHPB) equipment. The e ects of PP ﬁbre content and strain rate on the dynamic compressive
“AN EXPERIMENTAL INVESTIGATION OF SELF CURING CONCRETE NORPORAT WT POLY TYLN LYOL AS S L URN A NT” Shikha Tyagi M.Tech (Structure Engineering & Construction) Student, Roorkee Institute of Technology, (UTTRAKHAND) -----***-----Abstract: Concrete is most widely used construction materials due to its strength, permanence and durability.
The split Hopkinson pressure bar (SHPB) test is widely used for the characterisation of materials through dynamic stress measurement. A persistent problem with this technology is a lack of refined ...
Experimental Study of Compressive Strength of Recycled Aggregate Concrete - written by Yati R. Tank, Jigar P. Parmar, Darpan H. Gadhiya published on 2014/04/25 …
EXPERIMENTAL INVESTIGATION Several experimental investigation are carried out to check the performance of concrete by using sludge waste replacement with coarse and fine aggregate WASTE WATER SLUDGE DRY IN AIR AND SUNLIGHT SIEVING TO REQUIRED GRADE MIX WITH REPLACING DIFFERENT INGREDIENTS OF CONCRETE NEW SLUDGE-CRETE FOUND
paper reports the preliminary results of an experimental investigation on the use of glass powder to partially replace cement in concrete applications. Although there is strength reaction in the presence of glass powder, however, glass powder can be used to replace 30% of the cement in a concrete mix with satisfactory strength
2016-11-17 · paper reports the preliminary results of an experimental investigation on the use of glass powder to partially replace cement in concrete applications. Although there is strength reaction in the presence of glass powder, however, glass powder can be used to replace 30% of the cement in a concrete mix with satisfactory strength
Aiming at the determination of the rational loading waveform for rock materials, the comparative impact tests under the loadings of rectangular and half-sine stress waves were performed on red sandstone using an Ø50 mm SHPB apparatus. Experimental results with the rectangular stress wave affirm that the waveform dispersion and stress-strain curve oscillation frequently exist during the test ...
May 21, 2014 · Fine Crushers are widely used in the fine crushing of granite, basalt, limestone, pebble, cement clinker, quartz, iron ore and bauxite and having earned obvious economical benefit. Learn more info ...
An experimental investigation on the dynamic mechanical properties of the reactive powder concrete (RPC) was conducted using the Split-Hopkinson Pressure Bar (SHPB) . The compressive behavior of recycled aggregate concrete (RAC) with different recycled coarse aggregate (RCA) replacement percentages was experimentally investigated under quasi-static to high strain rates  .
investigation about quasistatic and dynamic fracture ... correlation technique for concrete and rock-like mate- ... Physical map of the SHPB experimental system.
2015-06-05 · Experimental Investigation Of Coarse Aggregate With Steel Slag In Concrete International organization of Scientific Research 66 | P a g e 3.3 Propertiy Of Course Aggregate Crushed granite aggregate with specific gravity of 2.77 and passing through 4.75 mm sieve and will be used …
2.3 Experimental program For obtaining dynamic increase factors (DIF) for HPC in a wide range of strain rates, two different Split Hopkinson Pressure Bars has been used in this test. A 50 mm SHPB for strain rates in the range of 100 sec-1 to 300 sec-1 and a 22 mm SHPB for strain rates in the range of 600 sec-1 to 700 sec-1. Dimen-
ACI 318-14 Chapter 5 Code & Commentary, Approved Version, Revised 2013-01-18 3 65 For design of special moment frames and special structural walls used to resist earthquake 66 forces, the Code limits the maximum specified compressive strength of lightweight concrete to 67 5000 psi.
Apr 16, 2014 · The mix proportion of concrete used is given in Table 1, where Type 42.5R Portland cement was used in all mixes. The mixes contained fly ash to save cement and reduce the heat of hydration for practical application.
Details of an experimental investigation using a 75-mm-diameter split Hopkinson pressure bar (SHPB) are outlined. The investigation focuses on recorded data and results in distinguishing the strain rate that mobilizes ductility of steel fiber reinforced concrete.
EXPERIMENTAL INVESTIGATION ON THE BEHAVIOR OF ARAMID FIBER REINFORCED POLYMER CONFINED CONCRETE SUBJECTED TO HIGH STRAIN-RATE COMPRESSION Hengwen Song 1(*), Hui Yang 1 1Department of Airfield and Building Engineering, Air Force Engineering University Aeronautics and Astronautics Engineering College, Xi’an 710038. PR China
May 12, 2015 · This paper presents an experimental investigation of the behavior of high-strength concrete (f c28 = 80 MPa) under very high pressure and quasi-static and dynamic loadings. Concrete specimen is inserted in an elastic, high-strength steel ring and subjected to an axial compression.
The SHPB device has primarily been used to test the dynamic performance of homogenous metal materials. In 1989, Ross first applied SHPB to test the impact properties of concrete materials within a strain rate range from 10 s −1 to 10 2 s −1 with a bar diameter of 51 mm .
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To attain the setout objectives of the present investigation, Partial Replacement Of Cement With Fly Ash And Sand With Bottom Ash And Glass Used In Concrete by 30, 40, and 50 % to produce Concrete. Reinforced Concrete (RC) is tested for Compression, split tension and flexural strengths.
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