PEMANFAATAN LIMBAH KOTORAN SAPI SEBAGAI PENGGANTI SEBAGIAN SEMEN DALAM PEMBUATAN BATAKO

2020 ◽  
Vol 15 (2) ◽  
pp. 53-57
Author(s):  
Kiki Kurniawan ◽  
Prihantono Prihantono ◽  
Rosmawita Saleh

The results showed the use of cow dung waste can increase the compressive strength of hollow brick from any composition of waste. Hollow brick with cow dung substitution of 0% has an average compressive strength value 44.75 Kg/Cm2 has an average water absorption of 14.31%, hollow brick with cow dung substitution of 5% has a value of compressive strength average 47.47 Kg/Cm2 has an average water absorption of 15.67%, Batako perforation with cow dung substitution of 7.5% has an average compressive strength value of 51.83 Kg/Cm2 has the absorption water averaging 13.71%, batako perforated with substitution of cow dung waste of 10% has an average compressive strength value 53.81 Kg/Cm2 has an average water absorption of 10.04%, hollow brick with substitution cow dung waste of 12.5% has an average compressive strength value of 50.66 Kg/Cm2 has an average water absorption of 23.6%, hollow brick with cow dung substitution of 15% average 48.84 Kg/Cm2 has an average water absorption of 19.72%. The optimum compressive strength value was obtained from percentage substitution of cow dung waste at 10% with mean value of compressive strength 53,81 Kg/Cm2 with average water absorption 10,04%.

2019 ◽  
Vol 2 (2) ◽  
pp. 287
Author(s):  
Jefrianto Jefrianto ◽  
Sigit Winarto ◽  
Yosef Cahyo Setianto Poernomo

Concrete needs are increasingly increasing, so the need for material is also increasing. From this research, it is hoped to find innovations to reduce the amount of cement used by combining tile waste and additives in the manufacture of concrete. From this compressive strength research, it can be concluded that the concrete that has the highest average compressive strength is the addition of 5% tile waste from the amount of cement and 5% additives of the amount of water with a compressive strength value of 212.44 kg / cm², and which has the lowest compressive strength value is concrete with the addition of tile waste 15% of the amount of cement and additives 5% of the amount of water with a compressive strength value of 191.11 kg / cm². The most effective absorption and the specific gravity of the test were obtained from concrete combined with 10% Tile Waste from cement and 5% additive with an average water value of only 0.1589 liters and a specific gravity of only 2400.65 kg / m3.Kebutuhan beton semakin lama semakin meningkat, sehingga kebutuhan akan bahan penyusunya juga kian meningkat. dari penelitian ini di harapkan dapat menemukan inovasi untuk mengurangi jumlah pemakaian semen dengan mengkombinasikan limbah genteng dan zat additive pada pembuatan beton.Dari penelitian kuat tekan ini dapat disimpulkan beton yang memiliki nilai kuat tekan rata-rata paling tinggi di miliki beton dengan penambahan Limbah Genteng 5% dari semen dan zat additive 5% dari air dengan nilai kuat tekan sebesar 212,44 Kg/cm²,dan yang memiliki nilai kuat tekan paling rendah di miliki beton dengan penambahan Limbah Genteng 15% dari semen dan zat additive 5% dari air dengan nilai kuat tekan 191,11 Kg/cm². Daya absorbsi dan berat jenis paling efektif dari pengujian didapat dari beton berkombinasi Limbah Genteng 10% dari semen dan zat additive 5% dengan jumlah nilai air rata – rata hanya sejumlah 0,1589 liter dan berat jenis hanya sebesar 2400,65 kg/m3.


2019 ◽  
Vol 7 (4) ◽  
Author(s):  
Mohd Amirul Hakim Sidek ◽  
Rosli M. Yunus ◽  
Mohammad Al-Nizar Khan Ahmad Khan ◽  
Muhammad Remanul Islam

The red gypsum (RG) is a waste, industrial by product, can be potentially used for brick manufacturing. In the current study, the manufacturing of bricks using RG, sand and cement was optimized using response surface methodology (RSM). The water/cement (w/c) ratio and sand replacement were varied for an optimum compressive strength and water absorption properties of the cement. From the analysis, the average compressive strength of conventional cement brick (CCB) tested was 10.9 MPa. Based on the optimum solution from the RSM analysis, possible cost prediction was estimated which can provide some valuable information to the manufacturer.  


Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 565
Author(s):  
Kamil Banaszkiewicz ◽  
Tadeusz Marcinkowski ◽  
Iwona Pasiecznik

Fly ash is the main by-product of coal combustion characterized by a large specific surface area. In addition to oxides, it also contains unburned coal and trace elements. This study aimed to investigate the possibility of using fly ash from pit-coal combustion (CFA) for the treatment of benzene-contaminated soil (S). The CFA was used as a mixture with Portland cement (PC) (70% PC + 30% CFA). The soil was treated with a PC-CFA mixture in amounts of 40, 60, and 80% of soil mass. During the process, the concentration of benzene was monitored with the flame-ionization detector. Produced monoliths (S+(PC-CFA)x) were tested for compressive strength and capillary water absorption. The experiment confirmed that the PC-CFA mixture limited benzene emission. The highest reduction in benzene concentration (34–39%) was observed for samples treated with the PC-CFA mixture in an amount of 80% (S+(PC-CFA)80). The average compressive strength of monoliths S+(PC-CFA)40, S+(PC-CFA)60, and S+(PC-CFA)80 was 0.57, 4.53, and 6.79 MPa, respectively. The water absorption values were in the range of 15–22% dm.


2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Amalia Amalia ◽  
Agus Murdiyoto

ABSTRACTThis study aims to investigate the potential of gold mining tailings UPBE Pongkor as hollow concrete brick making material and investigate its properties. The study was conducted by making hollow concrete brick composition 1 PC: 8 aggregate, consisting of 4 variations of tailings as aggregate substitution, ie 0%, 25%, 50%, and 75% of the aggregate weight. The results showed that (1) the use of tailings as aggregate replacement in concrete hollow brick can reduce the compressive strength of concrete blocks, (2) can be used as a substitute Tailings aggregate up to 75%, wherein the composition produces hollow concrete bricks that still meets ISO standards for class IV concrete brick that can be used as non-structural partition wall, (3) the higher levels replace sand tailings, water absorption in hollow concrete brick is also higher, (4) weight content of concrete hollow brick using more and more tailings, bulk density is decreased.Key words : Hollow concrete brick, compressive strength, tailing of gold mining


2018 ◽  
pp. 13-22
Author(s):  
Jiraporn Namchan ◽  
Nuta Supakata

The potential to use dredged sediment from the Watsongpeenong Canal and paper mill residue as the primary raw materials for producing facing bricks was studied in the laboratory. Dredged sediment and paper mill residue were chemically, mineralogically, and thermally characterized using X-ray fluorescence (XRF) and X-ray diffraction (XRD). To evaluate the effects of the contents of the paper mill residue on pore-forming, large amounts of paper mill residue, ranging from 5 to 7 % by mass, were blended with dredged sediments and fired at 700oC. The physical-mechanical properties, including dimensions and tolerances, wryness, deviation of the right angle, water absorption, compressive strength, stain, hole, rails, and cracks, as well as the microstructural properties of the facing bricks, were investigated. In addition, the heavy metals (Mn, Pb, Cd, and Cr) in the facing bricks were identified. The results indicated that the dimensions and tolerance, wryness, deviation from the right angle, water absorption, compressive strength, holes, and rails of the facing bricks with 5 % and 7 % by weight of paper mill residue were compliant with the requirements of the TIS 168-2546 standard. For stains and cracks, no batches of the facing bricks complied with the standard. Facing bricks made from 93 % dredged sediment and 7 % paper mill residue (93D+7P) obtained the highest compressive strength, with a value of 23.66 MPa. Therefore, dredged sediment and paper mill residue can be considered as suitable for use as primary raw materials in the production of facing bricks.


Author(s):  
Erny Agusri ◽  
Wahyu Pratama Jaya

Quickcure CX is a chemical for concrete designed using the latest technological innovations, this added material can accelerate and increase the compressive strength of concrete by 5 - 10% and can reduce the moisture content in the concrete mixture by 5 - 10%. The purpose of this study was to increase and accelerate the effect of the compressive strength value of concrete produced by Quickcure CX added material on K-500 concrete.The research sample is a cube-shaped test object with a size of 15cmx15cmx15cm. There are 4 sample variations, namely: Normal Concrete, Normal Concrete + Quickcure cx 0.25%, Normal Concrete + Quickcure cx 0.45%, and Normal Concrete + Quickcure cx 0.65%, each variation consisting of 15 samples.After conducting the concrete compressive strength test, this study obtained the highest average compressive strength test results in Normal Concrete (503.2kg / cm2), Normal Concrete + Quickcure cx 0.25% (513.8kg / cm2), Normal Concrete + Quickcure 0.45% (536.4kg / cm2) and Normal Concrete + Quickcure cx 0.65% at 551.6kg / cm2 at the age of 28 days. So of the 4 variations in the value of the compressive strength test of concrete, it still increases in Normal Concrete + Quickcure cx 0.65%, and accelerating the concrete does not accelerate because the average age is 21 days with a variation of Normal Concrete + Quickcure cx 0.65% with a value of 488.8 kg / cm2 so the concrete has not reached the compressive strength that was planned.Keywords: Concrete, Quikcure CX, Compressive Strength, K-500


2021 ◽  
Vol 9 (3) ◽  
pp. 281-290
Author(s):  
Richard Lumor ◽  
Lawrence Abladey ◽  
David Tikoli ◽  
Alfred Kofi Gand ◽  
Ezekiel Osei Owusu ◽  
...  

With the increase of construction activities in Ghana, there is an increasing demand in building materials leading to the shortage of the conventional materials. The informal sector is gradually seeing the introduction of quarry dust as a substitute of sand in block production. This paper focuses on a comparative analysis of the quality of sandcrete blocks and quarry dust cement blocks. Block samples were gathered from various suppliers around the Prampram and Dawhenya areas and through various laboratory tests were tested for their dimension tolerance, water absorption and compressive strengths. Aggregate samples were also taken from suppliers for sieve analyses. The study revealed that the quarry dust cement blocks contained relatively higher percentages of coarse grade particles compared to the sandcrete blocks. The total average water absorption of sandcrete blocks was found to be 3.90% while quarry dust showed an improved value of 3.28%. Sandcrete blocks were averagely found to be of a higher compressive strength of 4.31N/mm2, with quarry dust at 3.0N/mm2. The study suggested the likelihood of a lesser use of cement in the production of quarry dust cement blocks due to the similarities in colour between the quarry dust and cement, hence, negatively affecting its compressive strength.


2021 ◽  
Vol 3 (1) ◽  
pp. 58-63
Author(s):  
Dewi Setiawati ◽  
Bambang Jatmika ◽  
Muhammad Rizal Aditya

This study aims to determine the effects of nickel slag in the concrete mixture and on its compressive strength value. In this study, cylindrical specimen having 15cm diameter and 30cm height is used. We have used nickel slag as substitute of coarse aggregate in weight ratio of 25%, 50% & 100% respectively of coarse aggregate in sample. The ratio of concrete mixture used in this study is comprised of ratio 1:2:3 of cement, sand & gravel respectively. Compressive strength was used as a parameter for testing the samples in this study.             Test was performed using compression Testing machine, from the test results, the mean value of the average compressive strength of cylindrical concrete at the age of 3 days with a 25% variant nickel slag is 134.02 kg / cm2, 50% variant nickel slag is 165.76 kg / cm2, and 70% variant nickel slag is 148.92 kg / cm2, at age 7 days for the 25% is 219.61 kg / cm2, the 50% variant is 191.27 kg / cm2, and the 70% is 181.57 kg / cm2, while at the age of 28 days the 25% is 275.09 kg / cm2, the 50% iis equal to 296.28 kg / cm2, and the 70% is 225.37kg / cm2  


2020 ◽  
Vol 38 (10A) ◽  
pp. 1522-1530
Author(s):  
Rawnaq S. Mahdi ◽  
Aseel B. AL-Zubidi ◽  
Hassan N. Hashim

This work reports on the incorporation of Flint and Kaolin rocks powders in the cement mortar in an attempt to improve its mechanical properties and produce an eco-friendly mortar. Flint and Kaolin powders are prepared by dry mechanical milling. The two powders are added separately to the mortars substituting cement partially. The two powders are found to improve the mechanical properties of the mortars. Hardness and compressive strength are found to increase with the increase of powders constituents in the cement mortars. In addition, the two powders affect water absorption and thermal conductivity of the mortar specimens which are desirable for construction applications. Kaolin is found to have a greater effect on the mechanical properties, water absorption, and thermal conductivity of the mortars than Flint. This behavior is discussed and analyzed based on the compositional and structural properties of the rocks powders.


2021 ◽  
Vol 11 (8) ◽  
pp. 3540
Author(s):  
Numfor Linda Bih ◽  
Assia Aboubakar Mahamat ◽  
Jechonias Bidossèssi Hounkpè ◽  
Peter Azikiwe Onwualu ◽  
Emmanuel E. Boakye

The quantity of polymer waste in our communities is increasing significantly. It is therefore necessary to consider reuse or recycling waste to avoid an increase in the risk to public health. This project is aimed at using pulverized low-density polyethylene (LDPE) waste as a source to reinforce and improve compressive strength, and to reduce the water absorption of geopolymer ceramics (GC). Clay:LDPE composition consisting of 5%, 10%, and 15% LDPE was geopolymerized with an NaOH/Na2SiO3 solution and cured at 30 °C and 50 °C. Characterization of the geopolymer samples was carried out using XRF and XRD. The microstructure was analyzed by SEM and chemical bonding by FTIR. The SEM micrographs showed LDPE particle pull-out on the geopolymer ceramics’ fracture surface. The result showed that the compressive strength increases with the addition of pulverized polymer waste compared to the controlled without LDPE addition. Water absorption decreased with an increase in LDPE addition in the geopolymer ceramics composite.


Sign in / Sign up

Export Citation Format

Share Document