scholarly journals Tinjauan Ulang Mengenai Kadar Maksimum Pipih dan Memanjang Agregat Kasar dalam Campuran Beton Cara SNI. (Hal. 107-115)

2019 ◽  
Vol 5 (2) ◽  
pp. 107
Author(s):  
Decka Chaniago Sukanli ◽  
Priyanto Saelan
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Cylindrical Specimen ◽  
Maximum Level ◽  
Strength Test ◽  
Concrete Mixture ◽  
Concrete Compressive Strength ◽  
Slump Test ◽  
Coarse Aggregates ◽  
Compressive Strength Test

ABSTRAKDalam campuran beton, agregat kasar memiliki 70% sampai 80% pengaruh terhadap kuat tekan beton. Agregat kasar memiliki bentuk yang berbeda seperti membulat, pipih, dan memanjang tergantung pada sumbernya. Dalam penelitian ini, dilakukan penyelidikan pada kadar maksimum bentuk pipih dan memanjang agregat kasar dalam campuran beton. Pada penelitian kadar bentuk pipih dan memanjang agregat kasar ini menggunakan benda uji silinder dengan ukuran diameter 10 cm dan tinggi 20 cm. Pengujian dilakukan dengan uji slump dan uji kuat tekan beton yang mengacu pada SNI. Slump rencana yang digunakan yaitu (30-60) mm dan (60-180) mm dengan kuat tekan beton rencana yaitu 30 MPa usia 28 hari. Hasil pengujian ini dapat diketahui bahwa kadar pipih dan memanjang agregat kasar melebihi 20% tidak berpengaruh terhadap kuat tekan beton selama kadar pipih dan memanjang agregat kasar tidak melebihi 45% dari total agregat batu pecah.Kata kunci: bentuk pipih dan memanjang, agregat kasar, kuat tekan beton, uji slump ABSTRACTIn concrete mixture, coarse aggregate has 70% to 80% influence on concrete compressive strength. The coarse aggregate have different shape like rounded, angular, flaky and elongated depending on the source. In this study, we investigated the maximum level of flat and elongated coarse aggregate in concrete mixture. In the study of the level of flat and elongated forms coarse aggregates using cylindrical specimen with a diameter of 10 cm and a height of 20 cm. Testing was conducted with slump and concrete compressive strength test which refers to SNI. The slump plan used is (30-60) mm and (60-180) mm with a 30 MPa concrete compressive strength of 28 days. The results of this test can be seen that the flat and elongated of coarse aggregates exceeding 20% does not effect compressive strength of the concrete as long as the flat and elongated of coarse aggregates not exceed at 45% of the total aggregates.Keywords: flat and elongated shape, coarse aggregates, compressive strength, slump test

scholarly journals PENGARUH CANGKANG KEMIRI SEBAGAI PENGGANTI AGREGAT KASAR TERHADAP SIFAT MEKANIK BETON (EFFECT OF CANDLENUT SHELL AS SUBTITUTE COARSE AGGREGATE TO THE MECHANICAL PROPERTIES OF CONCRETE)

2018 ◽  
Author(s):  
Erniati Bachtiar
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Concrete Mixture ◽  
Construction Technology ◽  
Concrete Compressive Strength ◽  
Coarse Aggregates ◽  
Volume Weight ◽  
Compressive Strength Test

Concrete construction technology is directed to be sustainable and ecofriendly. The waste of the candlenut shell as a substitute for the coarse aggregate of concrete mixture is known that the candlenut shell has a hard texture so it may be used as a substitute for coarse aggregates in concrete. The purpose of the research was to determine the effect of Candlenut shell as a substitute of coarse aggregate on physical properties (slump test, bleeding, segregation, volume weight) and mechanical properties (compressive strength and tensile strength) of concrete using Candlenut shell as replacement material of the coarse aggregate. The variation of the research was percentage of the Candlenut shell in the concrete mixture, that was 0%, 25%, 50%, 75% and 100% to the coarse aggregate volume in the concrete mixture. Number of specimens in reseach was each 5 pieces each variation. Testing of mechanical properties of concrete (compressive strength and tensile strength) was performed at 28 days. Testing of the concrete for compressive strength test and tensile strength on age 28 days. Concrete using candlenut shell as a substitute of coarse aggregates has decreased compressive strength respectively 11.72 MPa (37.71%) for 25% candlenut shell; 15.54 MPa (50.00%) for 50% candlenut shell; 18.35 MPa (59.02%) for 75% candlenut shell; And 18,85 MPa (60,66%) for 100% candlenut shell from of the 0% candlenut shell with compressive strength of 31.08 Mpa. Concrete using for 25% candlenut shell as a substitute for coarse aggregates decreased tensile strength respectively of 0.95 MPa (28.70%) for 25% candlenut shell; 1.21 MPa (36.56%) for 50% candlenut shell; 1.27 MPa (38.37%) for 75% candlenut shell; And 1.40 MPa (42.30%) for 100% candlenut shell from of the 0% candlenut shell with the tensile strength of BN of 3.31 MPa. The decrease in the value of compressive strength and tensile strength is strongly influenced by the increasing percentage of Candlenut shells on concrete

scholarly journals EFFECT OF CANDLENUT SHELL AS SUBTITUTE COARSE AGGREGATE TO THE MECHANICAL PROPERTIES OF CONCRETE

2018 ◽  
Author(s):  
Erniati Bachtiar
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Concrete Mixture ◽  
Construction Technology ◽  
Concrete Compressive Strength ◽  
Coarse Aggregates ◽  
Volume Weight ◽  
Compressive Strength Test

Concrete construction technology is directed to be sustainable and ecofriendly. The waste of the candlenut shell as a substitute for the coarse aggregate of concrete mixture is known that the candlenut shell has a hard texture so it may be used as a substitute for coarse aggregates in concrete. The purpose of the research was to determine the effect of Candlenut shell as a substitute of coarse aggregate on physical properties (slump test, bleeding, segregation, volume weight) and mechanical properties (compressive strength and tensile strength) of concrete using Candlenut shell as replacement material of the coarse aggregate. The variation of the research was percentage of the Candlenut shell in the concrete mixture, that was 0%, 25%, 50%, 75% and 100% to the coarse aggregate volume in the concrete mixture. Number of specimens in reseach was each 5 pieces each variation. Testing of mechanical properties of concrete (compressive strength and tensile strength) was performed at 28 days. Testing of the concrete for compressive strength test and tensile strength on age 28 days. Concrete using candlenut shell as a substitute of coarse aggregates has decreased compressive strength respectively 11.72 MPa (37.71%) for 25% candlenut shell; 15.54 MPa (50.00%) for 50% candlenut shell; 18.35 MPa (59.02%) for 75% candlenut shell; And 18,85 MPa (60,66%) for 100% candlenut shell from of the 0% candlenut shell with compressive strength of 31.08 Mpa. Concrete using for 25% candlenut shell as a substitute for coarse aggregates decreased tensile strength respectively of 0.95 MPa (28.70%) for 25% candlenut shell; 1.21 MPa (36.56%) for 50% candlenut shell; 1.27 MPa (38.37%) for 75% candlenut shell; And 1.40 MPa (42.30%) for 100% candlenut shell from of the 0% candlenut shell with the tensile strength of BN of 3.31 MPa. The decrease in the value of compressive strength and tensile strength is strongly influenced by the increasing percentage of Candlenut shells on concrete.

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%.

scholarly journals Pengaruh Penambahan Sat Additive Addition H.E Terhadap Kuat Tekan Beton

2020 ◽  
Vol 2 (1) ◽  
pp. 31-57
Author(s):  
Ni Ketut Sri Astati Sukawati
Keyword(s):  
Compressive Strength ◽  
Concrete Mixture ◽  
Partial Replacement ◽  
Work Related ◽  
Coarse Aggregates ◽  
Alternative Ingredients ◽  
Fine Aggregates ◽  
Compressive Strength Test ◽  
Compressive Strength Of Concrete ◽  
Artificial Stone

Concrete with various variants is a basic requirement in building a building. The concrete mixture is diverse depending on the planning made beforehand. The cement mixture is usually in the form of a mixture of artificial stone, cement, water and fine aggregates and coarse aggregates. Aggregates (fine aggregates and coarse aggregates) function as fillers in concrete mixtures. (Subakti, A., 1994). However, in building construction, additives are often added, but there is still a sense of uncertainty at the time of dismantling the mold and the reference before the concrete reaches sufficient strength to carry its own weight and the carrying loads acting on it. To overcome the time of carrying out work related to concrete, it is necessary to find an alternative solution, for example by looking for alternative ingredients of concrete mixture on the basis of consideration without reducing the quality of the concrete. From the results of previous studies it was stated that due to the partial replacement of cement with Fly Ash, the strength of the pressure and tensile strength of the concrete had increased (Budhi Saputro, A., 2008). Based on the description above, the author seeks to examine how the compressive strength of concrete characteristics that occur by adding additives Addition H.E in the concrete mixture and is there any additive Additon H.E effect on the increase in the compressive strength characteristic of the concrete. From the results of the study, it was found that the compressive strength of the concrete with the addition of additives HE was that after the compressive strength test of the concrete cube was carried out and the analysis of concrete compressive strength of 10 specimens, in each experiment a cube specimen was made with the addition of additons. HE with a dose of 80 cc, 120 cc, and 200 cc can accelerate and increase the compressive strength of concrete characteristics.

Utilization of Brine Sludge in Controlled Low Strength Materials (CLSM)

2019 ◽  
Vol 801 ◽  
pp. 436-441
Author(s):  
Shin Jen Chen ◽  
Chao Shi Chen ◽  
Jyun Yong Jhan ◽  
Ruei Fu Chen
Keyword(s):  
Compressive Strength ◽  
Bearing Capacity ◽  
Strength Test ◽  
Drop Test ◽  
Coarse Aggregates ◽  
Fine Aggregates ◽  
Compressive Strength Test ◽  
Early Strength ◽  
Low Strength ◽  
Brine Sludge

Controlled low-strength materials (CLSM) have begun to apply in a lot of countries because CLSM could distribute randomly in complex sites. Manufacturing from chlor-alkali industry, the brine sludge was used to replace the composition in CLSM for resource application. In this study, the mix composition of brine sludge replaced only the fine aggregates or all of the aggregates. Examining the suitable composition, the ball drop test and the compressive strength test were carried out. The ball drop test was applied to determine the readiness of the CLSM to accept loads prior, and the bearing capacity at different ages were measured by the compressive strength test. The results of the ball drop test in different replacements was 7 - 11.5 cm. The replacement of fine aggregates satisified the rule of CLSM. Replacing all of the aggregates, the mixtures were over 7.6 cm, which meant that the early strength at 1 day were not sufficient. The value of compressive strength at 28 days was 1.709 - 21.37 kgf/cm2, conforming the requirement of CLSM. Overall, the mixture which replaced the fine aggregates met all the specified values of CLSM. In particular, the composition of coarse aggregates reduce to 250 kg/m3, the utalization of the brine sludge could be the most.

Low Strength Self Compacting Concrete Compressive Strength Test

2013 ◽  
Vol 275-277 ◽  
pp. 2041-2044
Author(s):  
Feng Yan ◽  
Nan Pang
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Compression Strength ◽  
Strength Test ◽  
The Self ◽  
Concrete Compressive Strength ◽  
Self Compacting Concrete ◽  
Intensity Index ◽  
Compressive Strength Test ◽  
Low Strength

In this paper,the mechanical properties were studied,the self compacting concrete cubic compression strength,prismatic compressive strength test,discussed two kinds of relationship between intensity index.

Effect of Mixing Steel Dust and Shred-Like Steel Fibres on the Properties of Concrete

2019 ◽  
Vol 7 (1) ◽  
pp. 24-29
Author(s):  
A. Ajwad ◽  
N. Khadim ◽  
Abdullah ◽  
U. Ilyas ◽  
M. U. Rashid ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Strength Test ◽  
Hardened Concrete ◽  
Normal Concrete ◽  
Steel Fibres ◽  
Coarse Aggregates ◽  
Mix Proportion ◽  
Steel Dust

In this research, fine and coarse aggregates present in the concrete are replaced with steel dust and shred-like steel fibres, respectively in different ratios and its effect on the properties of concrete is studied. Eight batches of concrete were mixed, each with the mix proportion of 1:2:4 and water cement ratio of 0.52. Batch A was of normal concrete. In batches B, C, and D, 5%, 10%, and 15% of sand was replaced with steel dust. In batches, E, F, and G, 2%, 5%, and 8% of coarse aggregate were replaced with steel fibres. In the last batch H, both 5% of sand and 5% of coarse aggregate were replaced with steel fine and steel fibres respectively. British as well as American standards were followed during the research. Slump test was performed in a fresh state of each mix to find the effect of these replacements on workability. 12 cubes of 150mm x 150mm x 150mm for compressive strength test and 12 cylinders of 150mm diameter and 300mm height of each, for tensile strength test were made for each batch to check these strength after 3, 7, 14, 28 days. It was found that the workability of fresh concrete decreases while density of fresh as well as hardened concrete increases with these replacements. It also results in an increase in initial compressive strength and a decrease in final compressive strength as compared to those of normal concrete. As far as tensile strength is concerned an increase in initial as well as final strength was observed.

Influences of Limestone Aggregates on Concrete Strength in Pipe Piles Production

2014 ◽  
Vol 584-586 ◽  
pp. 1370-1374
Author(s):  
Yuan Hai Jiang
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Concrete Strength ◽  
Normal Pressure ◽  
Concrete Compressive Strength ◽  
Steam Curing ◽  
Coarse Aggregates ◽  
Siliceous Rocks ◽  
Pressure Steam ◽  
Autoclave Curing

Taking the limestone and siliceous rocks as coarse aggregates to mix concrete,through normal pressure steam curing and autoclave curing,the concrete compressive strength after demould and compressive strength after autoclave curing are tested.The results indicate that the concrete compressive strength increases obviously after normal pressure steam curing when taking the limestone and granite as coarse aggregates,and the strength increasing laws are basically in accordance.However,the concrete compressive strength is great different after autoclave curing when taking the limestone and granite as coarse aggregates,the concrete strength increases lower with limestone as coarse aggregate,but the concrete strength increases higher with siliceous rocks as coarse aggregate.

scholarly journals Uji Kuat Tekan Beton dengan Menggunakan Pasir Kali Desa Rongi Kec. Sampolawa Kab. Buton Selatan

2020 ◽  
Vol 6 (1) ◽  
pp. 26-34
Author(s):  
Muh. Sayfullah S ◽  
Musrifin Musrifin
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Strength Test ◽  
Fine Aggregate ◽  
Material Characteristics ◽  
Water Factor ◽  
Compressive Strength Test ◽  
The Village ◽  
Aggregate Material

This study aims to determine the characteristics of fine aggregate material characteristics originating from Rongi Village, Sampolawa Subdistrict, coarse aggregate originating from Badene Village, Batauga Subdistrict, and to determine the compressive strength produced by concrete against the mixture of materials using fine aggregate originating from Rongi Village and coarse aggregate comes from the Badene Village of Batauga District. In this study the material was mixed using water with a cement water factor of 0.59. The compressive strength test is carried out at the age of 3 days, 7 days and 28 days, with a slinder size of 15cm x 30cm. The sample of specimens in this study amounted to 15 pieces. From the results of tests carried out the compressive strength value of the concrete produced using fine aggregate material derived from Rongi Village and coarse aggregate originating from the Village of Sangatene that is an average at 3 days of 94.5 kg / cm2, age 7 days is 119.6 kg / Cm2, and age 28 days is 192.5 kg / cm2. Based on the results of the compressive strength test shows that the compressive strength value obtained is increasing with increasing age of the treatment of the test specimens.

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