scholarly journals Experimental Consideration on Gas Permeability in Concrete Subjected to the Split Tensile Strength Test

2003 ◽  
Vol 52 (9) ◽  
pp. 1049-1054 ◽  
Author(s):  
Takafumi SUGIYAMA ◽  
Masaki MINATOYA ◽  
Yukikazu TSUJI
Keyword(s):  
Tensile Strength ◽  
Gas Permeability ◽  
Strength Test ◽  
Split Tensile Strength ◽  
Tensile Strength Test

scholarly journals Demonstration of Retrofitted Concrete Cubes, Cylinders and Prisms using Basalt and Glass Wrap

2019 ◽  
Vol 8 (12S) ◽  
pp. 1212-1218
Keyword(s):  
Tensile Strength ◽  
Loading Condition ◽  
Strength Test ◽  
Basalt Fibre ◽  
Split Tensile Strength ◽  
Tensile Strength Test ◽  
Strength Enhancement ◽  
Reinforced Masonry ◽  
Compressive Strength Test ◽  
Concrete Cylinders

Nowadays improvement in infrastructure construction is raising its place in the present scenario. But around the globe many reinforced masonry and concrete buildings are constructed annually. There are massive numbers of structures which become worse due to adjustments in use, adjustments in loading condition and modifications in design configuration, inferior construction, and material used or natural calamities. Thus, repairing and retrofitting of this structure for secure usage of has a top notch marketplace. There are several conditions wherein a civil structure might require retrofitting. In this paper an attempt has been taken to study the strength enhancement of concrete cylinders and prisms using Basalt fibre wrap, Nitro wrap and nylon wrap.. Cubes, cylinders and prisms are tested for compressive strength test, split tensile strength test, flexural strength. Then the conventional specimens and synthetic wrapped results are compared

scholarly journals Strength of Concrete using Clay as a Partial Replacement of Binder Content with and Without Lime

2021 ◽  
Vol 10 (3) ◽  
pp. 1-6
Author(s):  
S. B. Kandekar ◽  
◽  
S. K. Wakchaure ◽  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Hydrated Lime ◽  
Strength Test ◽  
Binder Content ◽  
Partial Replacement ◽  
Split Tensile Strength ◽  
Tensile Strength Test ◽  
Compressive Strength Test

Materials are the most important component of building construction. The demands of construction material are increasing day by day significantly. This demand is increasing the material prices and scarcity of material in construction industry. To achieve economical and eco-friendly criteria naturally occurring material is selected. Clay is a natural material and it can be available easily. This paper interprets the experimental investigation on strength of concrete using clay as a partial replacement to binder content (cement) in concrete. The replacement percentages are grouped as 0%, 10%, 20%, 30%, 40% of clay and 5% of hydrated lime with cement in each series in M25 grade of concrete. To achieve the pozzolanic property of clay hydrated lime was added. Different tests are performed to determine the optimum percentage of clay as a replacement for binder content (cement) in concrete. The Compressive strength test, split tensile strength test and flexural strength test were performed on the specimens. Total 90 cubes of size 150 mm were prepared for compressive strength test, 30 cylinders of 150 mm diameter and 300 mm height were prepared for split tensile strength test and 30 beams of size 150 mm x 150 mm x 1000 mm were prepared to carry out the flexural strength test. The results are compared to find the ideal proportion of clay as a replacement for cement. It is found that 10% replacement with 5% hydrated lime gives satisfactory results.

scholarly journals PENGARUH LAMA PENGERINGAN BETON SERAT PANDAN PUNDAK DURI (PANDANUS TECTORIUS) TERHADAP KUAT TARIK BELAH BETON

2019 ◽  
Vol 11 (1) ◽  
pp. 1-6
Author(s):  
Faizal Hadi ◽  
Agustin Gunawan
Keyword(s):  
Tensile Strength ◽  
Strength Test ◽  
Mix Design ◽  
Normal Concrete ◽  
Split Tensile Strength ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Tensile Strength Test ◽  
Pandanus Tectorius

Concrete is a material that have the strength to compression, but it is weak against tensile strength. The weakness of the tensile strength of concrete can be minimized by adding pandanus tectorius fiber. This study was aimed to determine the effect of adding pandanus tectorius fiber to split- tensile strength of concrete and percentage of the fiber in concrete that shows the highest split- tensile strength. The specimens used in this study is cylindrical with dimensions of 30 cm in height and 15 cm in diameter (SNI 03-4810-1998). Total of specimens is 32 that consist of 8 normal concretes and 24 variation concretes. An addition of pandanus tectorius fiber with the variation of 0,25%, 0,5%, and 0,75% was based on volume of the specimen. The mix design of concrete used water-cement ratio of 0.5 and slump of 60-100 mm. The splittensile strength of concrete was tested at 7 days and 14 days of dryng after immersing for 27 days. The result of split-tensile strength test of concrete with a variation of pandanus tectorius fiber showed a decreasing. The decreasing of split-tensile strength of concrete at 41 days was smaller than at 34 days to normal concrete. The highest decreasing percentage of split-tensile strength of variation concrete to normal concrete was respectively 9,249% (variation 0,25 tested at 41 days) and 14,518% (variation 0,75% tested at 34 days) .

Modeling of Concrete Composite Induced by Multi-Walled Carbon Nanotubes Using Response Surface Methodology

2015 ◽  
Vol 17 ◽  
pp. 8-13 ◽  
Author(s):  
R.S. Rimal Isaac ◽  
S. Subin ◽  
P. Prakash ◽  
P.K. Praseetha
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Response Surface ◽  
Strength Test ◽  
Split Tensile Strength ◽  
Tensile Strength Test ◽  
Response Surface Optimization ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this present work a response surface optimization was done to study the effect of the variables curing days, Multi-Walled Carbon Nanotube (MWCNT) and plasticizer on the strength of concrete. The variables were varied in three levels and a total of 15 cylindrical specimens were fabricated based on the experimental design. For measuring the effect of the variables, split tensile strength test was carried out on the specimens. For proper mixing of the MWCNT, sonication is carried out with plasticizer and then this mixture is added with water and the specimens are fabricated. Only the terms with p < 0.05 are chosen as significant. The results shows that an increase in MWCNT %, increased the split tensile strength of the concrete.

scholarly journals STUDI KELAYAKAN MATERIAL GUNUNG DAERAH ALIRAN SUNGAI ARAH MALANG-KOTA BATU DALAM PENGGUNAANNYA SEBAGAI SALAH SATU MATERIAL BETON

2021 ◽  
Vol 14 (2) ◽  
pp. 30
Author(s):  
Armin Naibaho ◽  
Agus Sugiarto ◽  
Purnama Dewi
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Building Materials ◽  
High Efficiency ◽  
Coarse Aggregate ◽  
Strength Test ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
Tensile Strength Test ◽  
Compressive Strength Test

Abstract The use of the mountain seal used as a building block for concrete should be considered, based on current usage apart from being a light construction material for housing, mountain materials from these two places are used as the main aggregate material for building construction, water structures (dams), roads. and bridges located in the surrounding Malang-Kota Batu area To determine the size of the aggregate, the coarse aggregate is sieved using a vibrating sieve, while the fine aggregate is sieved by a hydraulic sieve. In the screening process, about 70% of the filtered must pass so that high efficiency and capacity can be achieved. The compressive strength test results obtained the average compressive strength value at 28 days of concrete for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Batu City area is equivalent to 35.65 MPa. The results of the split tensile strength test showed that the average split strength value at the age of 28 days for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Kota Batu area is equivalent to 2.51 MPa. The compressive strength value for normal concrete is 35.65 MPa, it should produce split tensile strength = 4.179 MPa according to the provisions of SNI T-15-1991-03 Article 3.2.5 (fr = 0.70√fc '). Even though the split tensile strength value obtained in the laboratory is only 2.51 MPa, this means that the quality of materials (sand and broken stone) from Batu City is not suitable for use as building materials. Because the number 2.51 MPa is relatively much smaller than the value of 4.179 MPa, it is only one of the factors outlined in the SNI T-15-1991-03 article 3.2.5. Keywords: Mountain Material, Concrete, Concrete Compressive Strength Test, Concrete Tensile Strength Test

scholarly journals The Effect of Using White Sand As Material High Quality Concrete Mix

2021 ◽  
Vol 3 (3) ◽  
pp. 49-61
Author(s):  
Meisye Mitha Siranga ◽  
Suryanti Rapang Tonapa ◽  
Frans Phengkarsa
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Fresh Concrete ◽  
High Strength ◽  
Strength Test ◽  
Split Tensile Strength ◽  
White Sand ◽  
Tensile Strength Test ◽  
Test Objects

The use of concrete in Indonesia cannot be separated from skyscrapers, bridges with long spans, and underground buildings which generally have a larger load, so the use of high-strength concrete is necessary. This study aims to determine the value of compressive strength, split tensile strength, flexural strength, modulus of elasticity of concrete and determine the workability of fresh concrete with the addition of 0.8% superplaticizer. The test objects used in the form of cylinders with a diameter of 15 cm and a height of 30 cm as many as 15 pieces, and 3 pieces of blocks measuring 15 cm × 15 cm × 60 cm. From the results of the study, the compressive strength value was 43,007 MPa. The split tensile strength test is 3.584 MPa. The flexural strength test is 4,340 MPa. The elastic modulus test is 28447.956 MPa. From the slump test on fresh concrete with the addition of a superplaticizer, it is obtained by 10 cm.

scholarly journals STUDI PEMANFAATAN ABU TERBANG LIMBAH HASIL PEMBAKARAN CAMPURAN CANGKANG DAN SERABUT KELAPA SAWIT SEBAGAI SUBSTITUSI SEMEN PADA PEMBUATAN BETON NORMAL DI LAHAN BASAH

INFO-TEKNIK ◽  
2020 ◽  
Vol 21 (2) ◽  
pp. 227
Author(s):  
Fauzi Rahman ◽  
Gawit Hidayat ◽  
Novita Bertiani
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fly Ash ◽  
Oil Palm ◽  
Combustion Process ◽  
Strength Test ◽  
Strength Analysis ◽  
Normal Concrete ◽  
Split Tensile Strength ◽  
Tensile Strength Test

According to the Badan Pusat Statistik data in 2018, the total area of oil palm plantations in Indonesia currently reaches around 12.3 million hectares. Solid waste is the most waste, which is around 35-40% of the total Fresh Fruit Bunches (FFB) which is processed in the form of empty fruit bunches, fiber, fruit shells, and burnt ash. PT. Hasnur Citra Terpadu in Rantau, Tapin Regency, South Kalimantan is one of the Palm Oil Mill which in the combustion process of a boiler engine using oil palm shells and fibers is burned simultaneously. The result of the combustion process produces waste in the form of boiler crust ash which is fine textured (fly ash) and coarse textured (bottom ash). This study uses fly ash as a cement substitution for concrete mixtures. The making of mortar specimens was varied with fly ash with a percentage of 0%, 10%, 15%, 20% and 25% which will be tested for compressive strength at the age of 3 days, 7 days, 14 days, 21 days, and 28 days. Then the making of concrete specimens is planned with a quality of 25 MPa and the concrete compressive strength is tested at the age of 3 days, 7 days, 14 days, 28 days and 56 days and the split tensile strength test of the concrete at 28 days. Based on the results of the mortar compressive strength analysis, the optimum mixture of fly ash is 10% which is used for making concrete. The average compressive strength of normal concrete at 28 days is 26.33 MPa and the compressive strength of concrete with 10% fly ash (optimum concrete) is 26.14 MPa exceeding the design compressive strength of 25 MPa. Based on the results of the split tensile strength test of concrete at the age of 28 days, it was obtained 3,914 MPa for normal concrete and 3,466 MPa for optimum concrete.

scholarly journals Permeability of a Macro-Cracked Concrete Effect of Confining Pressure and Modelling

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 862
Author(s):  
Wei Chen ◽  
Yixuan Han ◽  
Franck Agostini ◽  
Frederic Skoczylas ◽  
Didier Corbeel
Keyword(s):  
Tensile Strength ◽  
Physical Model ◽  
Crack Closure ◽  
Gas Permeability ◽  
Confining Pressure ◽  
Strength Test ◽  
Linear Variable Differential Transformer ◽  
Cracked Concrete ◽  
Tensile Strength Test ◽  
Two Samples

The effects of confining pressure are investigated for two samples of a macro-cracked concrete. Samples are first macro-cracked with a splitting tensile strength test (Brazilian) technique. Gas permeability is continually measured under increasing (or decreasing) confining pressure, whereas crack closure (or opening) is recorded with an LVDT (Linear Variable Differential Transformer) device. Despite a mechanical closure of the macro-crack, identified at around 20 MPa confining pressure, gas permeability continues to decrease as confinement is increased. This means that a model of the macro-crack by two parallel planes (using Poiseuille law) cannot be used to represent permeability variations during closure (or opening) of cracks. As a consequence, a physical model is designed in order to simulate with a better consistency the real behaviour of the macro-crack. This simple modelling allows both behaviours, mechanical and hydraulic, under confining pressure, to be simulated with the same set of parameters.

scholarly journals STUDI KELAYAKAN MATERIAL GUNUNG DAERAH ALIRAN SUNGAI ARAH MALANG-KOTA BATU DALAM PENGGUNAANNYA SEBAGAI SALAH SATU MATERIAL BETON

2020 ◽  
Vol 14 (2) ◽  
pp. 30
Author(s):  
Armin Naibaho ◽  
Agus Sugiarto ◽  
Purnama Dewi
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Building Materials ◽  
High Efficiency ◽  
Coarse Aggregate ◽  
Strength Test ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
Tensile Strength Test ◽  
Compressive Strength Test

Abstract The use of the mountain seal used as a building block for concrete should be considered, based on current usage apart from being a light construction material for housing, mountain materials from these two places are used as the main aggregate material for building construction, water structures (dams), roads. and bridges located in the surrounding Malang-Kota Batu area To determine the size of the aggregate, the coarse aggregate is sieved using a vibrating sieve, while the fine aggregate is sieved by a hydraulic sieve. In the screening process, about 70% of the filtered must pass so that high efficiency and capacity can be achieved. The compressive strength test results obtained the average compressive strength value at 28 days of concrete for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Batu City area is equivalent to 35.65 MPa. The results of the split tensile strength test showed that the average split strength value at the age of 28 days for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Kota Batu area is equivalent to 2.51 MPa. The compressive strength value for normal concrete is 35.65 MPa, it should produce split tensile strength = 4.179 MPa according to the provisions of SNI T-15-1991-03 Article 3.2.5 (fr = 0.70√fc '). Even though the split tensile strength value obtained in the laboratory is only 2.51 MPa, this means that the quality of materials (sand and broken stone) from Batu City is not suitable for use as building materials. Because the number 2.51 MPa is relatively much smaller than the value of 4.179 MPa, it is only one of the factors outlined in the SNI T-15-1991-03 article 3.2.5. Keywords: Mountain Material, Concrete, Concrete Compressive Strength Test, Concrete Tensile Strength Test

scholarly journals PENGARUH PENGGUNAAN LIMBAH PLASTIK POLYPROPYLENE (PP) SEBAGAI CAMPURAN AGREGAT KASAR TERHADAP KUAT TEKAN DAN TARIK PADA BETON FC’ 25 MPA

2019 ◽  
Vol 3 (2) ◽  
pp. 81-89
Author(s):  
Angga Pirman Firdaus ◽  
Jonbi
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Strength Test ◽  
Plastic Waste ◽  
Concrete Mixture ◽  
Strength Testing ◽  
Concrete Compressive Strength ◽  
Tensile Strength Test ◽  
Compressive Strength Test ◽  
Waste Mixture

Indonesia ranks second in the world's largest plastic waste producer after China. Each year, Indonesia can contributeup to 187.2 million tons of plastic waste, while China reaches 262.9 million tons of plastic waste. Based on the data, one way to utilize plastic waste by using plastic waste as a mixture of concrete, where the plastic used is polypropylene (PP) plastic with different percentage of concrete mixture, the test includes compressive strength test and tensile concrete. The results of concrete compressive strength testing with polypropylene (PP) plastic waste mixture of 5%, 10% and 15% at age 28 in aggregate aggregate mixture decreased by 5.15%, 6.89% and 13.53%. As for the result of concrete tensile strength test with polypropylene (PP) plastic waste mixture of 5%, 10% and 15% at age 28 in crude aggregate mixture decreased 17,61%, 24,13% dan 23,24%.

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