scholarly journals Pengaruh Penggunaan Fly Ash dari Berbagai Sumber terhadap Sifat Kimia dan Sifat Fisika pada Semen Tipe I (OPC)

2020 ◽  
Vol 11 (2) ◽  
pp. 61-71
Author(s):  
Yulizar Yusuf ◽  
Vivin Firman Savitri ◽  
Hermansyah Aziz
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Physical Properties ◽  
Main Parameter ◽  
Strength Test ◽  
Type I ◽  
Cement Type ◽  
Compressive Strength Test ◽  
Cement Mixture

The aim of this study is to utilize fly ash from various sources on chemical and physical properties of cement type I (OPC). Utilization of fly ash can improve the strengthness of the cement. It can reduce the waste of fly ash by utilization into cement process. The procedure has been carried out on cement type I (OPC) with the addition of fly ash additives from various sources with concentration variations such as 10% and 20%. Utilization of fly ash as additives substance in cement works to improve the quality of cement. The main parameter in determining the quality of cement is determined by the compressive strength. The results of the compressive strength test showed that the addition of fly ash with a concentration of 10% had a higher effect on the compressive strength than the addition of a concentration of 20%. 5 types fly ash from various sources, fly ash from PT Sinar Mas gives greater compressive strength at 28 days. the addition of fly ash additives to OPC cement mixture has chemical and physical properties which are not much different from properties of PCC cement.

scholarly journals Comparison of The Compressive Strength and The Microstructure of Metakaolin Metastar and Metakaolin Bangka as Additive in Ordinary Portland Cement

2018 ◽  
Vol 67 ◽  
pp. 03023 ◽  
Author(s):  
Sotya Astutiningsih ◽  
Widyaningsih Sura ◽  
Ahmad Zakiyuddin
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Room Temperature ◽  
Strength Test ◽  
Type I ◽  
Cement Type ◽  
Cement Pastes ◽  
Supplementary Cementing Materials ◽  
Local Resources ◽  
Compressive Strength Test

Various This paper presents the results of the investigation on the use of Metakaolin (Al2Si2O2) as a supplementary cementing materials to improve the strength of cement. The most effective way to increase the strength of cement is the substitution of a proportion of cement with supplementary cementing materials. One of them was Metakaolin. Metakaolin was produced by thermal treatment calcination from Kaolin at 600-800 Celcius and has highest alumina and silicate purity. By added Metakaolin to Portland Cement type I (OPC), the amount of Calcium Silicate Hydrate (CSH) will increase through binding with Calcium Hydroxide (CaOH). There were two kinds of Metakaolin used in this investigation, commercial metakaolin named Metakaolin Metastar compared with Metakaolin Bangka which derived from Indonesia local resources, Bangka Island. Four Metakaolin replacement levels were employed in this investigation: 5%, 0%, 15%, and 20% with water per cement ratio 0.35, 0.40, and 0.50 both of Metakaolin Metastar and Metakaolin Bangka. The cement pastes cured at room temperature for 7, 14, and 28 days. The mechanical strength examined by compressive strength test, the microstructure were examined by SEM-EDS. The results of the study revealed both Metakaolin Metastar and Metakaolin Bangka enhanced the compressive strength of OPC. The most appropriate strength was obtained for a substitution of 20% metakaolin metastar which had 46,15% higher than OPC and 5% metakaolin Bangka which had 39,06% higher than OPC. The hydration rate was examined by Thermal Analysis Monitor. The results indicated that metakaolin metastar released higher heat than metakaolin Bangka. It can be concluded that Metakaolin metastar was more effective than metakaolin Bangka as additive in OPC.

scholarly journals Effect of nano CaCO3 on durability of concrete

2020 ◽  
Vol 165 ◽  
pp. 03029
Author(s):  
Jiangong Yang
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Test Data ◽  
Building Materials ◽  
Strength Test ◽  
Practical Application ◽  
Compressive Strength Test ◽  
Different Content ◽  
Durability Of Concrete

Through comparatively analyzing the impermeability and compressive strength test data of nano CaCO3 concrete with different content, this paper puts forward the method of optimizing the durability of nano CaCO3 concrete, and studies the influence of the content of fly ash on the durability of nano CaCO3 concrete on this basis, so as to provide a reference for improving the durability of concrete, so as to improve the recycling and reusing efficiency of building materials, and accelerate the practical application of nano CaCO3 concrete in engineering.

scholarly journals THE EFFECT OF ADDING CEMENT WASTE ON THE QUALITY OF CONCRETE COMPRESSIVE

Jurnal CIVILA ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 213
Author(s):  
Asrul Majid ◽  
Hammam Rofiqi Agustapraja
Keyword(s):  
Compressive Strength ◽  
Strength Test ◽  
Fine Aggregate ◽  
Infrastructure Development ◽  
Test Results ◽  
Compressive Strength Test ◽  
Compressive Strength Of Concrete ◽  
Concrete Materials ◽  
Test Objects

Infrastructure development is one of the important aspects of the progress of a country where most of the constituents of infrastructure are concrete. The most important constituent of concrete is cement because its function is to bind other concrete materials so that it can form a hard mass. The large number of developments using cement as a building material will leave quite a lot of cement bags.In this study, the authors conducted research on the effect of adding cement waste to the compressive strength of concrete. This study used an experimental method with a total of 24 test objects. The test object is in the form of a concrete cylinder with a diameter of 15 cm and a height of 30 cm and uses variations in the composition of the addition of cement waste cement as a substitute for fine aggregate, namely 0%, 2%, 4% and 6%. K200). The compressive strength test was carried out at the age of 7 days and 28 days.The test results show that the use of waste as a partial substitute for fine aggregate results in a decrease in the compressive strength of each mixture. at the age of 7 days the variation of 2% is 16.84 MPa, 4% is 11.32 MPa and for a mixture of 6% is 6.68 MPa. Meanwhile, the compressive strength test value of 28 days old concrete in each mixture decreased by ± 6 MPa. So the conclusion is cement cement waste cannot be used as a substitute for fine aggregate in fc 16.6 (K200) quality concrete because the value is lower than the specified minimum of 16.6 MPa.

PENGARUH PENAMBAHAN ABU AMPAS TEBU DAN ABU CANGKANG SAWIT DENGAN BENDA UJI SILINDER TERHADAP KUAT TEKAN BETON F’C 24,9 MPA”

2020 ◽  
Vol 6 (4) ◽  
Author(s):  
Masri A Rivai ◽  
Zainul Bahri ◽  
Aziiz Yudhatama
Keyword(s):  
Compressive Strength ◽  
Sugar Cane ◽  
Strength Test ◽  
Palm Shell ◽  
Characteristic Value ◽  
Compressive Strength Test ◽  
Materials Used

The use of additional materials as a mixture in the manufacture of concrete is progressive. The materials used are also increasingly varied, depending on the expected results, the added material that will hopefully achieve the expected quality of the concrete is f'c 24.9 MPa This research aims to increase the percentage of concrete increase in the percentage of addition of sugar cane dust and palm shell ash.This research uses cylindrical specimens with a total of 42 specimens consisting of 2.5% and 5% bagasse ash and 0, 2.5%, 5%, 7.5%, and 10% palm shell ash as materials. alternative to the strength of the compressive strength test concrete for 28 days.Based on the results of testing the compressive strength of cylindrical concrete, it is concluded that the increase in compressive strength is the largest. can be obtained 5% bagasse ash and 5% palm shell ash with a characteristic value of f'C 26.31 Mpa for 28 daysKeywords: Concrete, bagasse ash, palm shell ash, compressive strength

Study on the Strength Characteristics of Sludge Solidification

2015 ◽  
Vol 744-746 ◽  
pp. 628-631
Author(s):  
Yi Xiang Chen ◽  
Kai Xi An ◽  
Ke Xin Zhou ◽  
Chen Hao Xu
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Unconfined Compressive Strength ◽  
Strength Test ◽  
Experimental Results ◽  
Strength Characteristics ◽  
Curing Agent ◽  
Foundation Treatment ◽  
Compressive Strength Test ◽  
Stabilized Soil

In order to reveal the effect of type of admixture and its content on the strength of stabilized soil, this paper uses the sludge as raw soil and cement, fly ash as curing agent, and analyzes the strength characteristics of samples mixed stabilized according to certain content. Using the unconfined compressive strength test, the compressive strength of the samples is tested. The effect of curing agent type and its content on the compressive strength is investigated. From the experimental results, it can be seen that the content of cement and fly ash has much effect on the strength. The conclusions obtained can have some conference values on the foundation treatment and reuse of waste resources utilization.

The Influence of Fly Ash and Aggregates Composition on Pervious Concrete Characteristics

2018 ◽  
Vol 917 ◽  
pp. 297-302
Author(s):  
Jul Endawati ◽  
R. Utami ◽  
Rochaeti
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Research Result ◽  
Strength Test ◽  
Pervious Concrete ◽  
Fine Aggregate ◽  
Fine Aggregates ◽  
Compressive Strength Test ◽  
Binder Composition ◽  
Permeability Rate

Fly ash as a pozzolanic waste material can be utilized to substitute part of Portland cement in concrete mixture. The concrete paving industry utilizes the fly ash up to 50% (by weight) of the total binder. This study aims to obtain the characteristics of fly ash applications for pervious concrete. The composition of the binder developed based on the optimal proportion of fly ash from the previous study and the maximum of fly ash percentage used by the local paving industry in general. Other mix variations were made of the same binder composition with the addition of 6% of fine aggregates. The compressive strength of pervious concrete which binder composed of 63% portland cemet composite-25% fly ash-12% silica fume gained at 28 days, was not much different from the compressive strength of the pervious concrete without fine aggregate and with the binder composition of 50% FA-50% PCC and 0% SF. The value of the compressive strength test of the pervious concrete without fine aggregate is still within the range of compressive strength values ​​according to the ACI 522 R-10. The permeability rate of the pervious concrete is in the range of permeability research result of Chopra, 2013 (0.97 ÷ 1.90 cm/sec), but still higher compared to permeability rate gained by Dewoolkar, 2009 (0.83 ÷ 0.98 cm/sec).

scholarly journals KAJIAN PENAMBAHAN PAPER SULDGE YANG BERVARIASI TERHADAP SIFAT FISIK DAN MEKANIK CEILING BRICK

BANGUNAN ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 41
Author(s):  
M. Abdul Aziz Kurniawan ◽  
Eko Suwarno ◽  
Boedya Djatmika
Keyword(s):  
Compressive Strength ◽  
Research Method ◽  
Strength Test ◽  
Paper Sludge ◽  
Physical Test ◽  
Water Seepage ◽  
Significant Difference ◽  
Compressive Strength Test ◽  
Sludge Waste

Abstrak:Ceiling brick buangan paper sludge salah satu alternatif membuat pelat lantai, secara ekonomis lebih murah dan memiliki kuat tekan setara dengan beton konvensional K300. Penelitian ini menggunakan metode eksperimen. Terdapat dua jenis benda uji yang digunakan yaitu berbentuk kubus dengan ukuran 5 cm x 5 cm x 5 cm untuk mengetahui kualitas bahan ceiling brick dan benda uji berbentuk produk ceiling brick untuk mengetahui kualitas produk ceiling brick. Variasi paper sludge yang digunakan adalah 2, 4, 6, dan 8 persen. Satu benda uji dilakukan dua pengujian yaitu uji fisik (rembesan air) dan mekanik (kuat tekan). Metode penelitian menggunakan analisa statistik One Way dan dilanjutkan analisis Tukey. Hasil dari penelitian ini adalah (1) Kuat tekan produk ceiling brick dengan campuran paper sludge berurut-urut 0, 2, 4, 6, dan 8 persen sebesar 8.43 MPa, 9.39 MPa, 11.28 MPa, 10.31 MPa, dan 8.30 MPa. Nilai rata-rata rembesan air produk ceiling brick dengan variasi berurut-urut 0%,2%, 4%, 6%, dan 8%, yaitu sebesar 0.35 ml/menit, 0.37 ml/menit, 0.35 ml/menit, 0.42 ml/menit, dan 0.36 ml/ menit. (2) Kuat tekan mortar kubus ceiling brick dengan campuran paper sludge berurut-urut 0, 2, 4, 6, dan 8 persen sebesar 105.66 MPa, 112.67 MPa, 104.20 MPa, 98.55 MPa, dan 105.24 MPa. Rembesan air mortar kubus ceiling brick dengan variasi berurut-urut 0, 2, 4, 6, dan 8 persen, yaitu sebesar 0,59 ml/menit, 0,54 ml/menit, 0,46 ml/menit, 0,27 ml/menit, dan 0,28 ml/menit. (3) Uji kuat tekan dan rembesan air terhadap produk ceiling brick yang telah dicampur paper sludge mengalami perbedaan tetapi tidak signifikan. (4) Uji kuat tekan terhadap mortar kubus ceiling brick yang dicampur paper sludge mengalami perbedaan tetapi tidak signifikan. Sedangkan uji rembesan air tehadap mortar kubus ceiling brick yang dicampur paper sludge mengalami perbedaan yang signifikan. (5) Campuran paper sludge 4 persen pada produk ceiling brick dan campuran paper sludge 2 persen pada mortar kubus ceiling brick menghasilkan kuat tekan optimum.Kata-kata kunci: paper sludge, limbah kertas, ceiling brick, sifat fisik & mekanikAbstract: Paper sludge ceiling bricks are an alternative to making floor plates, are economically cheaper and have compressive strength equivalent to conventional K300 concrete. This research is using experimental method. There are two types of specimens used which are cube shaped with a size of 5 cm x 5 cm x 5 cm to determine the quality of ceiling brick material and specimens in the form of ceiling brick products to determine the quality of ceiling brick products. Paper sludge variations used are 0, 2, 4, 6, dan 8 percent. One test object was carried out two tests, namely physical test (water seepage) and mechanical (compressive strength). The research method uses One Way statistical analysis and Tukey analysis continues. The results of this study are (1) Compressive strength of brick brick products with a mixture of paper sludge in sequence of 0, 2, 4, 6, dan 8 percent at 8.43 MPa, 9.39 MPa, 11.28 MPa, 10.31 MPa and 8.30 MPa. The average seepage value of ceiling brick products with sequential variations of 0, 2, 4, 6, dan 8 percent which is 0.35 ml / minute, 0.37 ml / minute, 0.35 ml / minute, 0.42 ml / minute minutes, and 0.36 ml / minute. (2) Compressive strength of ceiling brick cube mortar with a mixture of paper sludge in a sequence of 0, 2, 4, 6, dan 8 percent by 105.66 MPa, 112.67 MPa, 104.20 MPa, 98.55 MPa and 105.24 MPa. Mortar cube ceiling water seepage with sequential variations of 0, 2, 4, 6, dan 8 percent in the amount of 0.59 ml / minute, 0.54 ml / minute, 0.46 ml / minute, 0.27 ml / minute, and 0.28 ml / minute. (3) The compressive strength and water seepage tests on ceiling brick products that have been mixed with paper sludge experience differences but are not significant. (4) Compressive strength test of ceiling brick cube mortar mixed with paper sludge is different but not significant. While the water seepage test of ceiling brick cube mortar mixed with paper sludge experienced a significant difference. (5) 4 percent paper sludge mixture in ceiling brick products and 2 percent paper sludge mixture in ceiling brick cube mortars produce optimum compressive strength.Keywords: paper sludge, waste paper, ceiling brick, physical & mechanical properties

scholarly journals THE EFFECT OF ADDITION OF GREEN GLASS POWDER ON THE STRENGTH OF CONE BLOCK PRESSING

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Rachmat Mudiyono
Keyword(s):  
Compressive Strength ◽  
Glass Powder ◽  
Block Structure ◽  
Silica Content ◽  
Strength Test ◽  
Conventional Model ◽  
Compressive Strength Test ◽  
Green Glass ◽  
The Difference

<p class="abstract">At this time the manufacture of products using waste has been developed. One of them is a cone block. In this study, the addition of green glass powder material will be carried out in order to determine the effect on the quality of the cone block. The addition of green glass powder aims to determine the difference in compressive strength against the conventional model cone block. The silica content contained in green glass powder is in the form of pozzolanic substances, a substance in the form of a cement-like content and can replace cement. This study modified the cone block with a mixture of green glass powder from a percentage of 8%, 10% and 15%.</p>Penbased on previous research which states that the addition of more than 10% silica will affect the cone block structure. Tests carried out on cone blocks, namely the compressive strength test. The results of the cone block research on the compressive strength test, in general, the mixed cone block of 8%, 10% and 15% compressive strength decreased due to the slowing of the binding process due to the reduction of the cement element except for the cone block aged 14 days with a mixture percentage of 8% which had an increase.

scholarly journals SOLIDIFIKASI DEINKING SLUDGE DAN FLY ASH BATU BARA UNTUK PEMENUHAN PERSYARATAN PENIMBUNAN DI LANDFILL

2016 ◽  
Vol 1 (02) ◽  
Author(s):  
Krisna Adhitya Wardhana ◽  
Sri Purwati ◽  
Saepulloh , ◽  
Toni Rachmanto
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Portland Cement ◽  
Alternative Treatment ◽  
Coal Fly Ash ◽  
Hazardous Materials ◽  
Strength Test ◽  
Hazardous Wastes ◽  
Compressive Strength Test ◽  
Filter Test

Deinking sludge and coal fly ash are classified as hazardous wastes that have to be treated before disposed in landfill. Solidification is an alternative treatment to prevent hazardous materials release to the environment. The research was conducted to find solidification combination formula of deinking sludge and coal fly ash that pass compressive strength test (>10ton/m2) and paint filter test so it can be disposed to landfill. The concretes were made from cement and aggregate (50% deinking sludge and 50% fly ash) on range combination 1:11 - 1:20. In addition, based on pozzolanic characteristic of fly ash, concretes without cement was made. The results showed that solidification products with combination 1:11 - 1:20 have compressive strength that exceed the regulation and passed paint filter test. Combination of 50% deinking sludge and 50% coal fly ash without portland cement addition had compressive strength that met requirement for landfill disposal.Key words : deinking sludge, fly ash, solidification, landfill ABSTRAKDeinking sludge dan fly ash batubara termasuk kedalam kategori limbah B-3 yang harus diolah terlebih dahulu sebelum ditimbun di landfill. Proses solidifikasi adalah salah satu pengolahan untuk mencegah tersebarnya kandungan limbah B-3 ke lingkungan. Tujuan dari penelitian ini adalah menentukan formulasi solidifikasi kombinasi deinking sludge dengan fly ash batubara yang memenuhi persyaratan kuat tekan (> 10 ton/m2) dan uji paint filter sehingga dapat ditimbun di landfill. Penelitian ini dilakukan dengan variasi perbandingan semen terhadap agregat (50% fly ash dan 50% deinking sludge) mulai dari 1:11 sampai dengan 1:20 dan juga dilakukan perlakuan agregat tanpa semen. Hasil penelitian menunjukkan bahwa komposisi 1:11 s/d 1:20 memiliki nilai kuat tekan yang jauh melebihi persyaratan dan lolos uji paint filter. Sedangkan hasil dari perlakuan tanpa semen menunjukkan bahwa kombinasi 50% deinking sludge dan 50% fly ash batubara telah memiliki nilai kuat tekan yang cukup besar dan memenuhi persyaratan penimbunan di landfill.Kata kunci : deinking sludge, fly ash batubara, solidifikasi, landfill 

scholarly journals Evaluation of the compressive strength of commercial sandcrete blocks produced in two metropolises of Delta State, Nigeria

2021 ◽  
Vol 3 (1) ◽  
pp. 61-71
Author(s):  
O. I. Akpokodje ◽  
◽  
G. G. Agbi ◽  
H. Uguru ◽  
O. Nyorere ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Local Government ◽  
Block Size ◽  
Poor Quality ◽  
Strength Test ◽  
The State ◽  
International Standards ◽  
Regulatory Agencies ◽  
Compressive Strength Test

The mechanical properties of sandcrete block greatly influenced the durability of structures built from it. This study was carried out to assess the compressive strength of sandcrete blocks produced in two major developmental and rapidly urbanizing zones of Delta State, Nigeria. 150 and 225 mm sandcrete blocks were sampled from 18 blocks moulding factories in Ndokwa East and Ughelli North Local Government Areas of Delta State, Nigeria. Five sandcrete block was sampled from each block moulding factory, at the rate of 9 factories per Local Government Area. The compressive strength of the sampled blocks was determined in accordance with the ASTM International standards. The results of compressive strength test showed that the compressive strengths of the blocks, regardless of the block size ranged from 0.61 to 16.19 MPa. Analysis of the results revealed that apart from the customized blocks, the compressive strengths of all the other blocks fell below the Nigerian Industrial Standard (NIS) recommendations of 2.5 MPa for non-load bearing walls. The general poor quality of the sandcrete blocks is attributed particularly to the poor mix ratios adopted by the block producers which fell short of NIS recommendations. Thus, this study recommended that standard regulatory agencies should closely monitor all the block making factories in the state, to ensure that sandcrete blocks produced or brought into the state met NIS recommendations

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