scholarly journals ANALISIS KUAT TEKAN BATU BATA DENGAN ONGGOK SEBAGAI BAHAN PENGGANTI SEKAM PADI

Teknika ◽  
2018 ◽  
Vol 13 (1) ◽  
pp. 12
Author(s):  
Ngudi Hari Crista ◽  
Agus Muldiyanto

<em>The most widely used material as a house wall is red brick, which is relatively cheap and safe to weather compared to other materials. Red bricks are usually in the manufacturing process by traditional means and fabrication. In general red bricks require additional materials of rice husk in the process of making. Much of the "starchy" waste material widely found in Klaten that is not currently utilized, is expected to be used instead of rice husk which is one of the red brick material mixtures.This research will be conducted brick test with mechanical behavior test which includes density test, water absorption test and compressive strength test with red brick made from rice husk mixture as comparison with analysis result of mixture of starch onggok waste. The result of this research is compressive strength of brick with mixture of rice husk larger and has a small water absorption compared with compressive strength of brick with mixture of onggok.</em>

2019 ◽  
Vol 958 ◽  
pp. 35-40
Author(s):  
Fernanda C.M. Esmanhotto ◽  
Matheus C. Mota ◽  
Hugo R.A.S. da Silva ◽  
Victor H.P. Moutinho ◽  
Alexandre Zaccaron ◽  
...  

The study aims to evaluate the technical properties of the application of filler element for slab as a hollow ceramic blocks for non-load-bearing masonry. This ceramic product has dimensions of approximately 6.5x25x81.5 cm, and because it presents different geometries of the conventional ceramic block and characteristics different from those required by the norm, this product was submitted to the norms of non-load-bearing masonry and being carried out tests of geometry, water absorption and compressive strength, besides the visual characteristics according to the standard ABNT NBR 15270/2005. Thirteen samples were used for the geometry and compressive strength test, and six for the water absorption test. Some samples presented a great deviation from the square, besides not being within the established limits of the planes and septa. The water absorption is within the established limits and compressive strength is lower than that required by the standard.


2011 ◽  
Vol 2 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Borhan M.M. ◽  
Mohamed Sutan N.

This study investigates the effects of polymer additives namely polyvinyl acetate (PVAc) on water absorption and compressive strength of mortar. Twelve mortar mixtures were investigated for water absorption test and compressive strength test. Results showed that water absorption were inversely proportional to the percentage of PVAc addition. Final analysis showed that addition of PVAc had significant effects on water absorption. Samples with 1%, 3% and 5% addition of PVAc showed an increase of water absorption capacity in comparison to control mortar.


Sand demand is currently very high and constantly increased up to cause problems in the construction industry. In an effort to solve this problem, various studies have been conducted as an alternative to replace the use of sand and among them are the use of quarry dust as a substitute sand. In this study, quarry dust is used as a substitute of sand in the manufacture of interlocking brick cement-sand. However, it has raised questions about the ability of interlocking brick with quarry dust in terms of compressive strength and water absorption compared to interlocking brick with sand that are often used in construction. Interlocking brick made using an appropriate mixture of sand and quarry dust as the main components, cement as a binding agent. Providing 70 samples of interlocking bricks different mixing and all the interlocking brick dimensions are 250mm x 125mm x 100mm. The various percentages of quarry dust that to be used in the experiment. This percentage ratio is required to determine the appropriate percentage to be used in the production of brick in order to produce optimum strength. Interlocking brick will be tested using hydraulic machines for days 7 to days 28 for compressive strength and water absorption test. The results showed that the highest value of compressive strength test is from a sample of 70% quarry dust of 31.07 N/mm ² which consisted ratio of 1 cement: 1.8 sand: 4.2 quarry dust while for water absorption test, the highest reading was recorded by 0 % sample of quarry dust with a ratio of 1 cement mixture: 5.1 sand of 11.8%. As a conclusion, quarry dust content can affect the compressive strength of bricks, thereby increasing the compressive strength of brick and reduce the rate of water absorb.


Author(s):  
AL-AZHAR ZAHIR MOHAMMED AL-RUQAISHI ◽  
Omar R. Khaleel

There are multiple industries that generate ceramic in the world. The ceramic waste ends as a landfill; and there is no it’s recycle. Moreover, palm fibers can be used for various purposes such as it can be mixed with mortar in order to minimize cracks. The objective of this study was to investigate the effects of using ceramic waste powder and palm fiber on properties of mortar. OPC is partially replaced with ceramic waste powder with different percentages such as 10%, 20%, and 30% and palm fiber is added with 10% of replacement only at 0.5%, 1% and 1.5% of the weight of cement. The specimens are compared with the reference mix in the water absorption test under 105co for 24/h and compressive strength test after 7 and 14 days. The results showed that the optimum percentage of cement replacement with ceramic powder was 10%. Regarding the fiber, the percentage of water absorption got increased while increasing the fiber. The compressive strength of mortar with fiber was obtained more than the normal. More percentage of fiber led to more strength of mortar.   


2021 ◽  
Author(s):  
T.F. Awolusi ◽  
D.O Oguntayo ◽  
O.E Babalola ◽  
S.O Ajamu ◽  
F.D Natie ◽  
...  

Abstract This study considers the utilization of bitumen modified with polyethylene terephthalate (PET) bottles waste as an alternative binder in paving blocks. The optimum bitumen content of asphalt concrete was modified with 2%, 4%, 6%, 8%, and 10% of PET waste. The compressive strength test, skid resistance, water absorption, and abrasion test were conducted on the paving block samples. Compressive strength test was conducted to verify the samples' compressive strength performance while water absorption and abrasion test were used to ascertain the durability properties of the samples. Results obtained for PET-modified bitumen concrete paving blocks (PMBCB) show an increase in compressive strength, skid resistance, and a decrease in the water absorption and abrasion loss when compared to unmodified bitumen samples. The maximum compressive strength for the PET-modified bitumen concrete was recorded at 10% PET replacement level. This implies that the utilization of PET-modified bitumen as binders in concrete paving blocks will not only help in waste recycling but also contribute significantly to the protection and preservation of the environment.


2020 ◽  
Vol 5 (1) ◽  
pp. 1-10
Author(s):  
E. A Oluwasola ◽  
A Afolayan ◽  
O. O. Ipindola ◽  
M. O Popoola ◽  
A. O Oginni

Aggregates constitute more than 90% of concrete and significantly determine the strength of concrete. In this study, the shape characteristics such as flakiness and elongation were determined using elongation and thickness gauge. The aggregate used for the study is granite. Aggregate crushing value and aggregate impact value tests were performed on the aggregate while slump test, water absorption test, compressive strength test and flexural strength test were carried out on concrete. A total of one hundred and thirty-two concrete cubes were produced using 1:2:4 and 1:3:6 mix each for the compressive strength test and forty-eight reinforced concrete beams were produced for flexural strength test. The slump for all the samples tested was examined to be true. The compressive strength of the concrete cube was greatly affected by the shape of aggregate used and it was noted that; for lower percentage of flaky and elongated aggregate the compressive strength is moderately high compared to when the percentage is high. The highest obtained compressive strength, 15N/mm2 is in compliance with the concrete compressive strength of normal 1:2:4 mix as stipulated in ASTM C109, Also, with 30% of elongated aggregate and 30% of flaky, the flexural strength of 7.03 N/mm2 was obtained. This shows that aggregate shape is a very important property of coarse aggregate that must be put into consideration in production of quality concrete for construction works.


Jurnal PenSil ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 166-176
Author(s):  
Melinda Putri Haryani ◽  
Kusno Adi Sambowo ◽  
Anisah

Abstrak Penelitian ini bertujuan untuk mengetahui pengaruh dari pemanfaatan limbah plastik PET, limbah plastik PP dan tanah diatomae sebagai bahan pengganti pasir sehingga dapat diketahui mutu yang mampu dicapai dan kesesuaiannya dengan SNI 03-0691-1996 mengenai paving block secara fisis maupun mekanis. Penelitian ini menggunakan metode eksperimen dengan benda uji paving block menggunakan limbah plastik PET, limbah plastik PP dan tanah diatomae sebagai bahan pengganti pasir dalam populasinya terdapat 5 presentase yaitu 0% (control), 5%, 10%, 15%, dan 20% dengan jumlah benda uji setiap variasi adalah 14 buah. Benda uji pada penelitian ini berukuran 210 mm x 105 mm x 80 mm berbentuk balok yang dicetak menggunakan mesin press vibrator. Setelah selesai pencetakan, benda uji dilakukan perawatan (curing) di dalam bak air selama ±28 hari. Kemudian dilakukan pengujian untuk mengetahui mutu benda uji sesuai dengan SNI 03-0691-1996 mengenai paving block, berupa uji tampak dan ukuran, uji kuat tekan, uji daya serap air, dan uji ketahanan terhadap Natrium Sulfat. Berdasarkan penelitian yang telah dilakukan, diperoleh hasil kuat tekan pada substitusi agregat halus buatan dengan variasi 0% (control), 5%, 10%, 15%, dan 20% berturut-turut 17,708 Mpa (Mutu B), 18,479 Mpa (Mutu B), 18,722 Mpa (Mutu B), 17,936 Mpa (Mutu B), dan 14,749 Mpa (Mutu C). Pada uji daya serap air hanya paving block dengan variasi 20% yang masuk ke dalam mutu C, kemudian pada pengujian ketahanan aus seluruh benda uji masuk ke dalam mutu A. Sementara untuk uji ketahanan terhadap Natrium Sulfat, hanya variasi 0% dan 5% yang tidak lolos uji. Dari hasil pengujian menunjukan bahwa penggunaan limbah plastik PET, limbah plastik PP, dan tanah diatomae sebagai agregat halus buatan yang disubstitusi ke agregat halus alami pada variasi 10% mampu mencapai mutu B yang digunakan sebagai peralatan parkir. Kata kunci: Limbah Plastik PET, Limbah Plastik PP, Tanah Diatomae, Agregat Halus, Paving Block, SNI 03-0691-1996   Abstract This study aims to determine the effect of the utilization of PET plastic waste, PP plastic waste and diatomaceous earth as a substitute for sand so that the quality that can be achieved and its conformity with SNI 03-0691-1996 regarding paving blocks physically and mechanically can be determined. This study uses an experimental method with paving block specimens using plastic as a substitute for sand in the population there are 5 percentages, namely 0% (control), 5%, 10%, 15% and 20% with the number of specimens for each variation is 14 pieces. The test object in this study measuring 210 mm x 105 mm x 80 mm in the form of a block printed using a vibrator press machine. After completion of printing, the specimens were treated (cured) in a water bath for ±28 days. Then a test was carried out to determine the quality of the test object in accordance with SNI 03-0691-1996 regarding paving blocks, in the form of appearance and size test, compressive strength test, water absorption test, and resistance test to Sodium Sulfate. Based on the research that has been done, the results of the compressive strength of artificial fine aggregate substitution with variations of 0% (control), 5%, 10%, 15% and 20% respectively 17.708 Mpa (Quality B), 18.479 Mpa (Quality B) , 18,722 Mpa (Quality B), 17,936 Mpa (Quality B), and 14,749 Mpa (Quality C). In the water absorption test, only paving blocks with a variation of 20% were categorized as C quality, then all the paving block are included in quality A in wear resistance testing. Meanwhile, for the sodium sulfate resistance test, only 0% and 5% variations did not pass the test. The test results show that the use of PET plastic waste, PP plastic waste, and diatomaceous earth as artificial fine aggregate which is substituted for natural fine aggregate at a variation of 10% is able to achieve B quality which is used as parking equipment. Keywords: Waste PET Plastic, PP Plastic Waste, Diatomaceous Earth, Fine Aggregate, Paving Block, SNI 03-0691-1996


2013 ◽  
Vol 834-836 ◽  
pp. 749-754 ◽  
Author(s):  
Li Wei Teng ◽  
Ran Huang ◽  
Si Yu Zou ◽  
Hui Mi Hsu

This study was aimed to evaluate the protection effectiveness of various concrete surface treating materials. Four types of surface treating materials and six parameters were selected. Compressive strength test, absorption test and permeability test were performed. Taguchi method was adopted to identify the key factors influencing the protection effectiveness provided by the surface treatment. L16(81Î26) orthogonal array was chosen to reduce the number of experiments. The major sequentially influential factors are type of coating material, w/c ratio of concrete substrate and coating thickness.


2016 ◽  
Vol 857 ◽  
pp. 319-322
Author(s):  
Nur Fitriah Isa ◽  
Khairunnisa Muhammad ◽  
Norhaizura Yahya ◽  
Muhammad Munsif Ahmad ◽  
Mohd Badrul Hisyam Ab Manaf ◽  
...  

Dolomite is a sedimentary rock resulting from the deposition of river or sea takes millions of years. The quarry waste from dolomite production had been used to replace sand in order to study the performance of modified brick sand. The objectives of this research are to determine the density, water absorption rate, and compressive strength of the new dolomite brick (d-brick) and to find out the optimum percentage of sand replacement with the dolomite waste. The bricks sample are then be tested using physical and mechanical approach. The percent of sand replacement is 25%, 50%, 75%, and 100% by weight.The optimum percentage mix of the modified sand brick using dolomite is D50 based on the density, water absorption, and compressive strength test of the sand brick. The result of the density of the D50 sand brick using dolomite is 1701 kg/m3, the water absorption of the sand brick 12%, and 14% at 7 days, and 28 days respectively. Meanwhile, the compressive strength of the D50 sand brick is 7.99 MPa, and 12.28 MPa at 7 days, and 28 days.


2020 ◽  
Vol 39 (3) ◽  
pp. 680-686
Author(s):  
A.S.J. Smith ◽  
G. Xu ◽  
M.J. Garba ◽  
M.Y. Aliyu

This paper presents the findings of a research work conducted on how to improve the mechanical properties of concrete using Date Palm Seed Ash (DPSA) as partial replacement of cement. The DPSA used was obtained by controlled burning of date palm seed in a kiln at a maximum temperature of 630oC for eight hours and air cooled afterwards. The ash obtained was sieved through 75μm sieve and its oxide composition analysed using X-ray fluorescence (XRF) procedures. DoE method of mix design was used to produce concrete ingredients for grade 30N/mm2 giving a water-cement ratio of 0.53. The effect of partial replacement of cement with DPSA on cement paste and concrete using 0, 2.5, 5, 7.5, 10, 15 and 20% DPSA was investigated through consistency and setting times tests, workability test, compressive strength test (at 7, 21, 28 and 56 days curing duration), pozzolanic activity index evaluation and water absorption test. Results show that DPSA has high silicon dioxide (45.50%), aluminum oxide (20.75%) and Iron oxide (7.25%). Findings indicate that the consistency and setting times of cement-DPSA paste increased with increase in the replacement of cement with DPSA. The workability of DPSA concrete decreased with increase in cement replacement. Compressive strength test results show that cement can be replaced with DPSA up to 10% as the compressive strength at 10% replacement is 31.5N/mm2 as against the 31N/mm2 of the normal concrete, at 56 days. The pozzolanic activity index result also show that DPSA concrete meets up the minimum requirement of 75% specified by ASTM C618-15. Also, the water absorption capacity of DPSA concrete at the highest replacement (20%) is 11% less than that at 0%. Keywords: Cement, Compressive strength, Concrete, Date palm seed ash, Partial replacement, Pozzolana


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