Split tensile test

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Study on the performance and durability of hemp concrete

Study on the performance and durability of hemp concrete

Determination of split tensile strength of concrete specimens, and the cylinder specimens of diameter to length ratio1:2 was selected, with diameter as 150 mm and the length as 300 mm. After the specimens are dried in open air, subjected to split tensile test under universal testing machine. The rate of loading was adjusted as 0.11 to 0.023 MPa/sec as per ASTM C496- 90.while testing the specimens, plywood pieces one at the top and the other at the bottom. The split

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Fibre Reinforced Concrete Using Glass Wool

Fibre Reinforced Concrete Using Glass Wool

The test specimens shall consist of concrete cylinder of 150mm diameter and 300mm long. It consists of applying a compressive line load along a concrete cylinder placed with its axis horizontal between the compressive platens using compression testing machine. This test is conducted on specimens cured for 7 , 14 and 28 days. Fig 6 shows split tensile test done on concrete cylindrical specimen.

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Mechanical Properties of Cane Reinforced Concrete by Using Crushed Granite Fines (CGF) As Fine Aggregate

Mechanical Properties of Cane Reinforced Concrete by Using Crushed Granite Fines (CGF) As Fine Aggregate

ABSTRACT: The use of steel reinforced concrete facade is gradually becoming unpopular because of the damage caused to the elements as a result of corrosion of the steel reinforcement. The possibilities of cane as a support material in concrete beam were explored. The essential goal was to determine the flexural behaviour of cane reinforced concrete beams. And also the crushed granite fine powder to be replaced river sand in concrete. Crushed granite fine powder is replaced to the level of 10%, 20%, and 30% in ordinary river sand. To adding spandex fiber as a crack arresting material in concrete. In the direction experimental investigation of Compressive strength of cube, Split tensile test for cylinder and Flexural strength test for beams at different curing periods like 7, 14 and 28 days. Finally the structural properties cane reinforced concrete will be compared with ordinary reinforced concrete.
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Performance of Concrete Using Paper Sludge Ash and Foundry Sand

Performance of Concrete Using Paper Sludge Ash and Foundry Sand

The split tensile test is an indirect method to determine the tensile strength of concrete. The tests were carried for different replacement level of cement by Paper Sludge Ash(5%, 10% and 15%) and fine aggregate by foundry sand (20%, 40% and 60%) for different curing periods i.e., 7 ,14 and 28 days. The strength of 14 mixes for 7, 14 and 28 days is shown in table 12 and these results were graphically represented in figure 5.

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Experimental Study of Concrete with Excavated Soil as a Fine Aggregate

Experimental Study of Concrete with Excavated Soil as a Fine Aggregate

Concrete is the most commonly used construction material in construction industry. Concrete is used for many applications such as superstructures, sub structures, waste water and water treatment facilities, parking structures, floor construction and exterior surface. Fine aggregate is the basic component for making concrete. Mining of river sand causing many problems deepening of the river courses, loosing water retaining sand strata, disturbs the aquatic life, lowering the underground water table etc. Nowadays good sand is not readily available. It is transported from long distance due to the scarcity of river sand and no guarantee for its consistent supply. So it is a time to find some substitute to natural river sand. The alternatives for river sand are granite powder, iron powder, copper slag, wood waste, fly ash, waste foundry sand, brick waste, quarry waste, crushed concrete waste etc. The idea of the investigation is to use the excavated soil available at a construction site and unused soil as a fine aggregate in concrete because this will conserve the natural resources and protect the ecological imbalance on environment. The excavated soil is taken from the Anna University campus, Tirunelveli, Tamilnadu. Concrete of 25 Mpa with mix proportion of 1:1.3:2.58 and water cement ratio of 0.4(as per IS 456: 2000) was adopted for the excavated soil concrete. Mix design was evaluated as per IS 10262:2009. Cubes, cylinders and beams were cast for conventional concrete and excavated soil concrete. The specimens were tested after 28 days of water curing to evaluate the strength of the concrete. The compression strength test, flexural strength test and split tensile strength test was conducted for the concrete specimens. The main objective of the study is to investigate the mechanical properties of excavated soil concrete.
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Analysis of Behaviour of Rice Husk Ash Cement Concrete on Addition of Polypropylene Fiber

Analysis of Behaviour of Rice Husk Ash Cement Concrete on Addition of Polypropylene Fiber

The compressive strength test for concrete specimens has been performed in Compression Testing Machine (CTM) having maximum loading capacity of 2000KN. 30 concrete specimens were tested for 7 days compressive strength and 30 concrete specimens were tested for 28 days compressive strength.

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Effect of Rapid Fluctuation in Temperature on Hybrid Fibre Reinforced Concrete

Effect of Rapid Fluctuation in Temperature on Hybrid Fibre Reinforced Concrete

Polypropylene (PP) is a thermoplastic polymer used in a huge variety of applications including packaging and labeling, textiles, stationery and reusable containers of various types, laboratory equipment, automotive components and polymer banknotes. Polypropylene (PP) fibre puts effect on various properties of concrete in fresh and hardened state such as compressive strength, tensile strength, flexural strength, workability, bond strength, fracture properties, creep strain, impact and chloride penetration. It is chemically inert and any chemical that can harm these fibres will probably be much more detrimental to the concrete matrix.
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Flyash Enriched with Selected Microorganism B...

Flyash Enriched with Selected Microorganism B...

Varenyam Achal, et al. (2010) in the present study Bacillus sp.CT-5, isolated from cement, was used to study compressive strength and water absorption test. The highest compressive strength was obtained with mortar cubes prepared with Bacillus sp. CT-5 that were incubated for 28 days(31MPa) as compared to those with water(23 Mpa) and NBU medium(24 Mpa).There was about 36.15% increase in the compressive strength of mortar specimens at 28 days, prepared with bacterial cells compared to control . The deposition of a layer of calcium carbonate crystal on the surface resulted in a decrease of the permeation properties. As a consequence the ingress of harmful substances may be limited.
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Performance Study on Various Industrial Waste Utilization in Concrete

Performance Study on Various Industrial Waste Utilization in Concrete

The concrete slump test is an empirical test that measure the workability of fresh concrete. More specifically, it is also used to determined consistency of between individual batches. The test is popular due to the simplicity of apparatus used and simple unfortunately, the simplicity of the test often allows a wide variability in the manner that the test is performed. The slump measured should be recorded in mm of subsidence of the specimen during the test. The slump concrete takes various shapes, and according to the profile of slumped concrete the slump is termed as true slump shear slump or collapse slump. If a shear or collapse slump is achieved a fresh sample should be taken and the test procedure. Unfortunately, the simplicity of the test often allows a wide variability in the manner that the test is performed.
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Strength and Durability Study of Recycled Aggregate Concrete Containing Silica Fume as Partial Replacement for Cement

Strength and Durability Study of Recycled Aggregate Concrete Containing Silica Fume as Partial Replacement for Cement

Cube specimens of size 150 mm x 150 mm x 150 mm were used for Initial Surface absorption Test, Ultrasonic pulse velocity (UPV) measurement, Acid resistance test and alkalinity resistant test. Whereas cylinder specimens with 100 mm diameter and 50mm depth sliced from 200 mm long cylinders were used for capillary suction test. Cubes of size 100 mm x 100 mm x 100 mm were used for obtaining compressive strength and split tensile strength of the various mixes.

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Partial Replacement of Course and Fine Aggregate by Mossiac Tile Chips and Granite Powder

Partial Replacement of Course and Fine Aggregate by Mossiac Tile Chips and Granite Powder

Julia Garcia-González, Desire Rodríguez-Robles, Andrés Juan-Valdés, Julia Ma Morán-del Pozo and M. Ignacio Guerra-Romero et al(2014)[4] : The study concentrates on the ceramic waste from industries in Spain. The concrete design is done as per the Spanish concrete code and the recycled ceramic aggregates met all the technical requirements imposed by current Spanish legislation. The ceramic aggregates are replaced up to 100% replacement of coarse aggregate. Flexural strength test for different concrete mixes decreases. The concrete was shows the property similar to normal stones.
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Enhancement of Properties of Recycled Coarse Aggregate Concrete Using Ureolytic Bacteria

Enhancement of Properties of Recycled Coarse Aggregate Concrete Using Ureolytic Bacteria

The tensile strength of concrete is much lower than the compressive strength, due to the simplicity with which splits can spread under tensile loads, and is generally not considered in plan. Usually thought to be zero. Nonetheless, it is a vital property, since splitting in concrete is most by and large because of the tensile burdens that happen under load, or because of natural changes. The disappointment of concrete in strain is represented by miniaturized scale splitting, related especially with the interfacial district between the total particles and the cement, additionally called interfacial progress zone. The tensile strength of the concrete can be resolved tentatively by the accompanying three strategies:
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Application of Capital Asset Pricing Model in Indian Stock Market

Application of Capital Asset Pricing Model in Indian Stock Market

Rui Zhong, Key Wille (2015) presented a paper on “Material design and characterization of high performance pervious concrete. “In this paper 12 mixture were proportioned with various matrix and compressive and flexural strength test were conducted. This research results show that compressive strength and elastic modulus increase by upto 150% and 100% respectively. In this research highlight that the development and characterization of high performance pervious concrete aiming at improved mechanical and advanced durability properties. It was observed that incorporation of appropriate amount of fibre reinforcement could further improve the durability of pervious concrete.
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Experimental Investigation on Concrete Considering Different Types of Steel Fibers

Experimental Investigation on Concrete Considering Different Types of Steel Fibers

1) Compressive Strength Test: It has been seen that compressive strength of the concrete increase 52.84% compare to conventional concrete for 3% of Hooked steel fiber, compressive strength of the concrete increase 43.59% compare to conventional concrete for 3% of long Crimped steel fiber and compressive strength of the concrete increase 36.23% compare to conventional concrete for 3% of long Straight steel fiber.

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Study on Behaviour of Concrete Beams Containing Granite Powder

Study on Behaviour of Concrete Beams Containing Granite Powder

The experimental investigation carried out in this study showed that partial replacement of sand in concrete with granite powder improves its compressive strength, flexural strength, and tensile strength. The particle size is vital for the physical and chemical contributions of granite powder in concrete. As the particle size of granite powder is smaller than sand, they were able to fill the voids between sand particles comparable to the way sand particles fill the void among coarser aggregates thus resulting in less voids and higher density and strength. Moreover, because the particle size is smaller than sand, the surface area will be greater. Because of the greater surface area of granite powder compared to sand, the concrete is anticipated to have greater strength due to more bonded areas with hydrating cement. Even though the granite powder normally has a reduced amount of silicon oxide content as compared to sand and not all granite powder may react chemically with cement, the filler effect will bring improvements in the concrete. The test results showed that the greatest gain in compressive strength and flexural strength was with 15% granite powder concrete ratio. Beyond 15%, the increase was less. It appears that beyond this percentage, the filling effect of granite powder is not optimized and hinders the strength of concrete. It means that as the surface area expands, additional hydrating cement is needed to bond these areas. If the water-cement ratio and added admixtures are not enough to hydrate sufficient cement, then the enlarged surface area of granite powder would not all be bonded and consequently less strength was observed with increased ratios of granite powder.
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A PROFICIENT LOW COMPLEXITY ALGORITHM FOR PREEMINENT TASK SCHEDULING INTENDED 
FOR HETEROGENEOUS ENVIRONMENT

A PROFICIENT LOW COMPLEXITY ALGORITHM FOR PREEMINENT TASK SCHEDULING INTENDED FOR HETEROGENEOUS ENVIRONMENT

All the concrete mixtures were mixed for 5mins in a laboratory mixer. Before casting, a variety of tests were conducted on the concrete mixtures to determine their properties at it fresh state including the slump flow, flow time, segregation resistance and wet density. For each concrete mixture, 9 numbers of 150mm cubes were cast for the determination of compressive strength, 9 numbers of 150 ɸ x300mm cylinder were cast for the determination of split tensile strength. Furthermore, 3 numbers of 150mm x 150mm x 700mm prisms were cast for measuring the flexural strength. After casting, all the specimens were covered with plastic sheets in the laboratory at 27 ̊ C until the time of testing.
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An Expermental Study on Self Compacting Concrete by Replacing by Marble Sludge Powder and Quarry Rock Dust

An Expermental Study on Self Compacting Concrete by Replacing by Marble Sludge Powder and Quarry Rock Dust

 The partial replacement of fine aggregate with marble sludge and Crusher dust gives an excellent result in strength aspect and quality aspect. It induced higher compressive strength, higher splitting tensile strength as compared to ordinary SCC.

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Study on Strength of Concrete (M 30 Grade) by Partial Replacement of Cement with Appropriate % of Ground Granulated Blast Furnace Slag (GGBS), Calcium Carbide Residue (CCR) and Fly Ash(FA)

Study on Strength of Concrete (M 30 Grade) by Partial Replacement of Cement with Appropriate % of Ground Granulated Blast Furnace Slag (GGBS), Calcium Carbide Residue (CCR) and Fly Ash(FA)

In this study three specimens were tested at 7 days and 28 days. The tests for Compressive strength of cube was performed on CTM (Compression Testing Machine), and flexure strength of beam and splitting tensile strength of Cylinder Test were performed on a UTM (Universal Testing Machine) of capacity 1000 kN.

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Management of pumicecrete as lwc/lwa construction material with fly ash as part cement substitute

Management of pumicecrete as lwc/lwa construction material with fly ash as part cement substitute

Parhizkar et al., (2011) have reported that the compressive strength, tensile strength and drying shrinkage properties of lightweight concretes are compatible with the requirements of normal concrete when pumice were used as lightweight fine and coarse aggregates. Rao et al., (2013) reported that the fiber reinforced natural pumice stone used as LW aggregate have strength as that of M 20 concrete by (20% and 1.5%) or (40% and 0.5%) replacement of pumice aggregate and fibber respectively. Taylor (Banthia, 1994) reported that addition of fly ash enhances the compressive strength and splitting tensile strength by >20% and addition of silica fume enhances the compressive strength by 25%. Calaveri et al have noted that lightweight pumice stone concrete (LWPSC) can be an alternative to common artificial light weight aggregates using loading tests. Desai et al., [16] stated that 30% replacement of conventional granite chips by light weight aggregate with 15% replacement of cement (metakoline + pumice powder and silica fume + flyash) the strengths were found to be of standard and cost effective.
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Experimental Study on Utilization of Red Mud and Used Foundry Sand in Cement Concrete

Experimental Study on Utilization of Red Mud and Used Foundry Sand in Cement Concrete

possibility of replacing the part of Portland cement by Red mud and Fine Aggregates by Used foundry sand. Because of storing issues, the waste negatively affects the environment. To solve this problem, an attempt was made to check the effectiveness of Red mud as a partial replacement of Portland cement. Portland cement was replaced up to 30 % Red mud by the weight of cement and checking the compressive strength of mortar. Fine aggregate was replaced up to 60% Used foundry sand and evaluating its compressive and split tensile strength of Red mud concrete. The optimum gained after 7 and 28 days curing period was found to be 20% Red mud (for mortar) and for the combination of both Red mud and Used foundry sand was found to be 20% Red mud + 40% Used foundry sand(for concrete).
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