A method to correlate splitting tensile strength and compressive strength of pervious concrete cylinders and cores

The skeleton of concrete is determined by aggregate gradation. This paper studies the permeability and mechanical properties of pervious concrete affected by the aggregate gradation. Eight levels of aggregate gradation were selected, which included the single grain grading, double size grain grading and continuous grading. It is found that by series of tests, compared to the pervious concrete with the single grain grading and double size grain grading, the pervious concrete with continuous grading has low porosity, small permeability coefficient, high cubic compressive strength and similar splitting tensile strength and the flexural strength.

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Effect of length of steel fibers of waste tires on splitting tensile strength of concrete

MATEC Web of Conferences ◽

10.1051/matecconf/201927601003 ◽

2019 ◽

Vol 276 ◽

pp. 01003 ◽

Cited By ~ 1

Author(s):

Aneel Kumar Hindu ◽

Tauha Hussain Ali ◽

Agha Faisal Habib

Keyword(s):

Tensile Strength ◽

Splitting Tensile Strength ◽

Steel Fibers ◽

Waste Tires ◽

Concrete Cylinders ◽

Proper Disposal

The increase in volume of vehicles ultimately increases the number of waste tires. The proper disposal or reutilization of waste tires is a challenge. This study is aimed to utilize the steel fibers of waste tires as reinforcement in concrete. Concrete cylinders were cast with addition of different percentages of steel fibers (0-2%) and length (10-20 mm). The fresh and hard properties of concrete reinforced with different percentages of steel fibers and lengths were observed. It is seen that splitting tensile strength of concrete increased with increase in the length of fiber and with the increase in the percentage of fiber. The inclusion of the fibers in concrete causes the reduction in the workability of concrete.

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Material-removing machining wastes as a filler of a polymer concrete (industrial chips as a filler of a polymer concrete)

Science and Engineering of Composite Materials ◽

10.1515/secm-2021-0035 ◽

2021 ◽

Vol 28 (1) ◽

pp. 343-351

Author(s):

Norbert Kępczak ◽

Radosław Rosik ◽

Mariusz Urbaniak

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Young’S Modulus ◽

Industrial Waste ◽

Splitting Tensile Strength ◽

Polymer Concrete ◽

Strength Parameters ◽

Basic Parameters ◽

Natural Fillers

Abstract The paper presents an impact of the addition of industrial machining chips on the mechanical properties of polymer concrete. As an additional filler, six types of industrial waste machining chips were used: steel fine chips, steel medium chips, steel thick chips, aluminium fine chips, aluminium medium chips, and titanium fine chips. During the research, the influence of the addition of chips on the basic parameters of mechanical properties, i.e., tensile strength, compressive strength, splitting tensile strength, and Young’s modulus, was analyzed. On the basis of the obtained results, conclusions were drawn that the addition of chips from machining causes a decrease in the value of the mechanical properties parameters of the polymer concrete even by 30%. The mechanism of cracking of samples, which were subjected to durability tests, was also explored. In addition, it was found that some chip waste can be used as a substitute for natural fillers during preparation of a mineral cast composition without losing much of the strength parameters.

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Compressive strength and splitting tensile strength ofZr-based metallic glass

Procedia Engineering ◽

10.1016/j.proeng.2011.04.141 ◽

2011 ◽

Vol 10 ◽

pp. 857-862

Author(s):

Hidefumi Date ◽

Minako Ishiguro ◽

Masatoshi Futakawa ◽

Takashi Naoe

Keyword(s):

Tensile Strength ◽

Compressive Strength ◽

Metallic Glass ◽

Splitting Tensile Strength

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Effect of using magnetic water on the mechanical properties of concrete exposed to elevated temperature

International Journal of Building Pathology and Adaptation ◽

10.1108/ijbpa-12-2020-0111 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Wasim Barham ◽

Ammar AL-Maabreh ◽

Omar Latayfeh

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Elevated Temperature ◽

Flexural Strength ◽

Tap Water ◽

Splitting Tensile Strength ◽

Content Type ◽

Normal Water ◽

Magnetic Water

PurposeThe influence of using magnetic water instead of tap water in the mechanical properties of the concrete exposed to elevated temperatures was investigated. Two concrete mixes were used and cast with the same ingredients. Tap water was used in the first mix and magnetic water was used in the second mix. A total of 48 specimens were cast and divided as follows: 16 cylinders for the concrete compressive strength test (8 samples for each mix), 16 cylinders for the splitting tensile strength (8 specimens for each mix) and 16 beams to test the influences of magnetized water on the flexural strength of concrete (8 specimens for each mixture). Specimens were exposed to temperatures of (25 °C, 200 °C, 400 °C and 600 °C). The experimental results showed that magnetic water highly affected the mechanical properties of concrete. Specimens cast and curried out with magnetic water show higher compressive strength, splitting tensile strength and flexural strength compared to normal water specimens at all temperatures. The relative strength range between the two types of water used was 110–123% for compressive strength and 110–133% for splitting strength. For the center point loading test, the relative flexural strength range was 118–140%. The use of magnetic water in mixing concrete contribute to a more complete hydration process.Design/methodology/approachExperimental study was carried out on two concrete mixes to investigate the effect of magnetic water. Mix#1 used normal water as the mixing water, and Mix#2 used magnetic water instead of normal water. After 28 days, all the samples were taken out of the tank and left to dry for seven days, then they were divided into different groups. Each group was exposed to a different temperature where it was placed in a large oven for two hours. Three different tests were carried out on the samples, these tests were concrete compressive strength, flexural strength and splitting tensile strength.FindingsExposure of concrete to high temperatures had a significant influence on concrete mechanical properties. Specimens prepared using magnetic water showed higher compressive strength at all temperature levels. The use of magnetic water in casting and curing concrete can increase the compressive strength by 23%. Specimens prepared using magnetic water show higher splitting tensile strength at all temperatures up to 33%. The use of magnetic water in casting and curing can strengthen and increase concrete resistance to high temperatures, a significant enhancement in flexural strength at all temperatures was found with a value up to 40%.Originality/valuePrevious research proved the advantages of using magnetic water for improving the mechanical properties of concrete under normal conditions. The potential of using magnetic water in the concrete industry in the future requires conducting extensive research to study the behavior of magnetized concrete under severe conditions to which concrete structures may be subjected to. These days, there are attempts to obtain stronger concrete with high resistance to harsh environmental conditions without adding new costly ingredients to its main mixture. No research has been carried out to investigate the effect of magnetic water on the mechanical properties of concrete exposed to elevated temperature. The main objective of this study is to evaluate the effect of using magnetic water on the mechanical properties of hardened concrete subjected to elevated temperature.

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Mechanical Properties of Fiber Reinforced Lightweight Aggregate Concrete

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.477.274 ◽

2011 ◽

Vol 477 ◽

pp. 274-279 ◽

Cited By ~ 1

Author(s):

Yi Xu ◽

Lin Hua Jiang ◽

Hong Qiang Chu ◽

Lei Chen

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Water Hyacinth ◽

Steel Fiber ◽

Polypropylene Fiber ◽

Lightweight Aggregate ◽

Splitting Tensile Strength ◽

Lightweight Aggregate Concrete ◽

Fiber Types

In this study, the effects of fiber types on the mechanical properties of lightweight aggregate concretes were investigated. Three types of fibers, namely, polypropylene fiber, steel fiber and water hyacinth (Eichhornia crassipes) fiber, and two types of lightweight aggregates, namely, expanded polystyrene and ceramsite were used. The compressive strength and splitting tensile strength of concretes were tested. The results show that both the compressive strength and the splitting tensile strength were improved by adding a reasonable volume of steel fiber and polypropylene fiber into LWAC. The addition of water hyacinth fiber had little effect on the compressive strength of LWAC, while a little increase was observed in the splitting tensile strength.

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Effect of Curing Method on Properties of Lightweight Foamed Concrete

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i2.29.14285 ◽

2018 ◽

Vol 7 (2.29) ◽

pp. 927 ◽

Cited By ~ 2

Author(s):

Bishir Kado ◽

Shahrin Mohammad ◽

Yeong Huei Lee ◽

Poi Ngian Shek ◽

Mariyana Aida Ab Kadir

Keyword(s):

Tensile Strength ◽

Compressive Strength ◽

Water Absorption ◽

Precast Concrete ◽

Construction Materials ◽

Splitting Tensile Strength ◽

Structural Members ◽

Lightweight Construction ◽

Foamed Concrete ◽

Curing Method

Lightweight construction is aimed to achieve a sustainable feature by reducing transportation frequency and construction materials usage during construction phase. Lightweight precast concrete may serve an alternative for the lightweight construction. There are rarely application can be found for structural members as lightweight panels always to be used for secondary or non-load bearing members. This paper presents an experimental study on properties (compressive strength, splitting tensile strength, water absorption) of lightweight foamed concrete (LFC) at two different curing methods. LFC with densities of 1500, 1700, and 1800 kg/m3, cement-sand ratio of 2:1 and water-cement ratio of 0.5 were investigated. The results showed LFC can be produced with the properties ofdensity range of 1500 to 1800 kg/m3 and corresponding compressive strength of 10 to 39 MPa. The higher the density of LFC, the less the water absorption for all the curing method considered, the highest and the lowest water absorption was 11.3% and 2.0% for 1500 kg/m3 cured in water and 1800 kg/m3 cured in air respectively. Compressive strength of LFC increases with age and density while water cured LFC has high compressive strength. Splitting tensile strength increases with density of LFC, but air cured LFC has more splitting tensile strength than water cured of the same density. The highest splitting tensile strength recorded was 3.92 MPa for 1800 kg/m3 cured in air, which was about 16% of its compressive strength at 28 days of curing age. These properties are important and can be applied to LFC precast structural members with air or water curing method which have less references for LFC in structural usage.

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The Effect of Nano Metakaolin Material on Some Properties of Concrete

Diyala Journal of Engineering Sciences ◽

10.24237/djes.2013.06105 ◽

2013 ◽

Vol 6 (1) ◽

pp. 50-61

Author(s):

Amer M. Ibrahem ◽

Shakir A. Al-Mishhadani ◽

Zeinab H.Naji

Keyword(s):

Tensile Strength ◽

Compressive Strength ◽

Portland Cement ◽

Water Absorption ◽

Thermal Activation ◽

Ordinary Portland Cement ◽

Splitting Tensile Strength ◽

Kaolin Clay ◽

Cement Ratio ◽

Water Cement Ratio

This investigation aimed to study the effect of nano metakaolin ( NMK ) on some properties (compressive strength ,splitting tensile strength & water absorption ) of concrete. The nano metakaolin (NMK) was prepared by thermal activation of kaolin clay for 2 hours at 750 Ċ. The cement used in this investigation consists of ordinary Portland cement (OPC). The OPC was partially substituted by NMK of ( 3, 5 & 10%) by weight of cement. The C45 concrete was prepared , using water/cement ratio ( W/c) of (0.53) .The Water absorption was tested at 28 days while the tests (compressive strength ,splitting tensile strength) were tested at ages of (7, 28, 60,& 90) days . The compressive strength and splitting tensile strength of concrete with NMK were higher than that of reference concrete with the same W/c ratio.The improvement in the compressive strength when using NMK was (42.2, 55.8 , 63.1% ) at age 28 days for ( 3%, 5%, &10% ) replacement of NMK respectively whereas the improvement in the splitting tensile strength was (0% , 36% & 46.8 %) at age of 28 days when using (3%, 5%, &10% ) NMK respectively. The improvement in the water absorption was (16.6%, 21.79%, &25.6 ) when using (3, 5, &10% )NMK.

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Experimental study on the properties of highperformance concrete made with class C fly ash

MATEC Web of Conferences ◽

10.1051/matecconf/201927601014 ◽

2019 ◽

Vol 276 ◽

pp. 01014

Author(s):

I Made Alit Karyawan Salain ◽

I Nyoman Sutarja ◽

Teguh Arifmawan Sudhiarta

Keyword(s):

Experimental Study ◽

Tensile Strength ◽

Compressive Strength ◽

Fly Ash ◽

Permeability Coefficient ◽

Splitting Tensile Strength ◽

Type I ◽

Fine Aggregate ◽

Hydration Time ◽

Class C

This experimental study presents the properties of highperformance concrete (HPC) made by partially replacing type I Portland cement (OPC) with class C fly ash (CFA). The purpose of this study is to examine, with hydration time, the development of the compressive strength, the splitting tensile strength and the permeability of HPC utilizing different quantity of CFA. Four HPC mixtures, C1, C2, C3, and C4, were made by utilizing respectively 10%, 20%, 30% and 40% of CFA as replacement of OPC, by weight. One control mixture, C0, was made with 0% CFA. The mix proportion of HPC was 1.00 binder: 1.67 fine aggregate: 2.15 coarse aggregate with water to binder ratio 0.32. In each mixture, it was added 5% silica fume and 0.6% superplasticizer of the weight of the binder. Tests of HPC properties were realized at the age of 1, 3, 7, 28, and 90 days. The results indicate that CFA used to partially replace OPC in HPC shows adequate cementitious and pozzolanic properties. The compressive strength and the splitting tensile strength of HPC increase while the permeability coefficient decreases with increasing hydration time. It is found that the optimum replacement of OPC with CFA is 10%, however the replacement up to 20% is still acceptable to produce HPC having practically similar harden properties with control mixture. At this optimum replacement and after 90 days of hydration, the compressive strength, the splitting tensile strength and the permeability coefficient can reach 68.9 MPa, 8.3 MPa and 4.6 E-11 cm/sec respectively. These results are 109%, 101%, and 48% respectively of those of control mixture.

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Influence the Carbonation Resistance and Mechanical Properties of Shotcrete by Accelerated Carbonation Test

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1065-1069.1985 ◽

2014 ◽

Vol 1065-1069 ◽

pp. 1985-1989

Author(s):

Jia Bin Wang ◽

Di Tao Niu ◽

Rui Ma ◽

Ze Long Mi

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Steel Fiber ◽

Splitting Tensile Strength ◽

Construction Technology ◽

Accelerated Carbonation ◽

Carbonation Depth ◽

Normal Concrete ◽

Carbonation Resistance

In order to investigate the carbonation resistance of shotcrete and the mechanical properties after carbonation, the accelerated carbonation test was carried out. The results indicate that the carbonation resistance of shotcrete is superior to that of normal concrete. With the increasing of carbonation depth, compressive strength and splitting tensile strength of shotcrete grew rapidly. The admixing of steel fiber can further improve the carbonation resistance, reduce the carbonation rate, and increase the splitting tensile strength of shotcrete greatly. Besides, based on analyzing the effects of construction technology and steel fiber of concrete for the carbonation resistance, a carbonation depth model for shotcrete was established. Key words: shotcrete; carbonation; steel fiber; mechanical properties

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