scholarly journals KAJIAN PERBAIKAN STRUKTUR PERKERASAN KAKU MENGGUNAKAN METODE PRESSURE GROUTING DENGAN MATERIAL POLYURETHANE DAN EPOXY (Studi Kasus : Ruas Jalan Patriot – Perintis Kemerdekaan Kota Pekalongan)

2019 ◽  
Vol 24 (1) ◽  
pp. 19
Author(s):  
Arif Junianto ◽  
Rifqi Maulana Ramadhan ◽  
Jantayu Padma Utari ◽  
Kusdiyono Kusdiyono ◽  
Dadiyono Amat Pawiro ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Rapid Development ◽  
Heavy Traffic ◽  
Infrastructure Development ◽  
Rigid Pavement ◽  
Epoxy Material ◽  
Concrete Damage ◽  
Pressure Grouting ◽  
Compressive Strength Of Concrete ◽  
Average Compressive Strength

Today the implementation of road infrastructure development using concrete pavement is experiencing rapid development because it can serve heavy and heavy traffic loads. But there are some problems that often arise in the use of concrete for pavement, causing damage (cracks). Repair of concrete cracks using pressure grouting method is one solution that can be used to improve the strength of concrete. This study discusses the comparison of the effectiveness of using polyurethane and epoxy materials in an effort to improve the rigid pavement structure. The research method used was to carry out repairs to the concrete structure on the Independence Patriotic-Road Section of Pekalongan City using polyurethane and epoxy materials. In this study each of the 5 existing normal (non-damaged) concrete samples, concrete repaired with polyurethane material and repaired concrete using epoxy material using core drill method, which will then be tested for compressive strength in the laboratory, as well as hammer test testing. to find out the strength of the existing concrete damage. The results showed that the average compressive strength of normal existing concrete (not damaged) amounted to 59.20 N/mm2, the average compressive strength of concrete that experienced cracks was 27.04 N/mm2, the average compressive strength value of repair concrete using polyurethane material is 31.92 N/mm2 (increasing by 15.17%) and the average compressive strength of concrete repair using epoxy material is 45.22 N/mm2 (increased by 56.53%).

The Effect of the Carbon Fiber on Concrete Compressive Strength

2018 ◽  
Vol 1145 ◽  
pp. 106-111
Author(s):  
De Jia Liu ◽  
Mei Jun Chen ◽  
Li Xue ◽  
Fan He ◽  
Jian Hu
Keyword(s):  
Compressive Strength ◽  
Carbon Fiber ◽  
Construction Material ◽  
Rapid Development ◽  
Great Influence ◽  
Engineering Application ◽  
Fiber Reinforced Concrete ◽  
Engineering Practice ◽  
Curing Time ◽  
Compressive Strength Of Concrete

With the rapid development of construction, the high quality of the construction material is required. Mixing carbon fiber in concrete attracts more and more attention as it can reinforce concrete. However, the science research and engineering application of carbon fiber reinforced concrete is relatively few. In this paper, the effects of different mixing amount of carbon fiber and the sand ratio in concrete and the curing time of concrete and relationships between these factors were investigated. Proper carbon fiber and sand ratio can promote the compressive strength of concrete and it has a good resistance to cracking. The compressive strength of concrete with different mixing amounts of carbon fiber peaks when the sand ratio was 31% and the compressive strength was better when the carbon fiber mixing amount was 0.2% and 1% than any other ratios after 28 days. When the sand ratio was 31%, the compressive strength of carbon fiber mixing amount increased with the increase of curing time and it reached the top when the carbon fiber ratio was 0.8%. The mixing amount of carbon fiber also had a great influence on the early compressive strength to some extent. We anticipate that the research can offer certain reference for engineering practice.

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.

scholarly journals Experimental Study of Compressive Strength of Lightweight Concrete Using Wood Charcoal

2021 ◽  
Vol 328 ◽  
pp. 10006
Author(s):  
Daud Andang Pasalli ◽  
Dina Limbong Pamuttu ◽  
Rahmat Fajar Septiono ◽  
Chitra Utary ◽  
Hairulla Hairulla
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Lightweight Concrete ◽  
Rapid Development ◽  
Volume Ratio ◽  
Wood Charcoal ◽  
Compressive Strength Test ◽  
Compressive Strength Of Concrete ◽  
Concrete Materials

The use of lightweight concrete materials in Indonesia, especially in the Merauke Regency area can be an alternative amid the rapid development of the housing sector. In this experimental study, the author took the initiative to replace coarse aggregate with wood charcoal as light coarse aggregate. The purpose of this study was to determine the value of compressive strength and to determine whether the wood charcoal material met the standard of lightweight concrete coarse aggregate. Planning the proportion of lightweight concrete mixture in this study using a volume ratio between cement, sand and wood charcoal of 1: 2, 1: 2: 2.5 and 1: 2: 5 with variations of test days at 3, 7, 14, 21 and 28 day. From the results of the compressive strength test of lightweight concrete, the use of wood charcoal aggregate as coarse aggregate in concrete causes the value of the compressive strength of concrete to decrease.

scholarly journals PENGARUH CAMPURAN ABU SEKAM PADI DAN ABU ARANG TEMPURUNG SEBAGAI PENGGANTI SEBAGIAN AGREGAT HALUS TERHADAP KUAT TEKAN BETON

2021 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Agung Prayogi
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Coarse Aggregate ◽  
Rice Husk Ash ◽  
Fine Aggregate ◽  
Concrete Compressive Strength ◽  
Fine Aggregates ◽  
Compressive Strength Of Concrete ◽  
Average Compressive Strength ◽  
By Products

Abstract Concrete is the most widely used material throughout the world and innovations continue to be carried out to produce efficient development. Shell charcoal ash and rice husk ash are industrial by-products which have the potential to replace sand for concrete mix, especially in Indragiri Hilir. The research with the title "Effect of Mixture of Rice Husk Ash and Shell Ash Ashes as Substitute for Some Fine Aggregates Against Concrete Compressive Strength" aims to prove the effect of a mixture of shell charcoal ash and husk ash to replace some of the sand to produce maximum compressive strength. Concrete is a mixture of Portland cement, fine aggregate, coarse aggregate, and water. This research uses 5 variations of the mixture to the weight of sand, BSA 0 without a substitute mixture, BSA 1 with a mixture of 5% husk ash and 10% shell charcoal, BSA 2 with a mixture of 5% husk ash and 15% charcoal ash, BSA 3 with a mixture of 5% husk ash and 18% charcoal, BSA 4 with a mixture of 10% husk and 10% charcoal, and BSA 5 with a mixture of 13% husk ash and 10% charcoal ash. SNI method is used for the Job Mix Formula (JMF) mixture in this research. The results of the average compressive strength of concrete at 28 days for JMF of 21.05 MPa, BSA 1 of 23.68 MPa, BSA 2 of 22.23 MPa, BSA 3 of 14.39 MPa, BSA 4 of 13.34 MPa , and BSA 5 of 20.14 MPa. The conclusion drawn from the results of the BSA 1 research with a mixture of 5% husk ash and 15% charcoal ash produced the highest average compressive strength of 23.68 MPa. Abstrak Beton merupakan material paling banyak digunakan diseluruh dunia dan terus dilakukan inovasi untuk menghasilkan pembangunan yang efisien. Abu arang tempurung dan abu sekam padi merupakan hasil sampingan industri yang berpotensi sebagai pengganti pasir untuk campuran beton, khususnya di Indragiri Hilir. Penelitian dengan judul “Pengaruh Campuran Abu Sekam Padi dan Abu Arang Tempurung Sebagai Pengganti Sebagian Agregat Halus Terhadap Kuat Tekan Beton” ini bertujuan membuktikan adanya pengaruh campuran abu arang tempurung dan abu sekam untuk mengganti sebagian pasir hingga menghasilkan kuat tekan maksimum. Beton adalah campuran antara semen portland, agregat halus, agregat kasar, dan air. Penelitian ini menggunakan 5 variasi campuran terhadap berat pasir, BSA 0 tanpa campuran pengganti, BSA 1 dengan campuran 5 % abu sekam dan 10% arang tempurung, BSA 2 dengan campuran 5% abu sekam dan 15% abu arang, BSA 3 dengan campuran 5% abu sekam dan 18% arang, BSA 4 dengan campuran 10% sekam dan 10% arang, dan BSA 5 dengan campuran 13% abu sekam dan 10% abu arang. Metode SNI digunakan untuk campuran Job Mix Formula (JMF)  pada penelitian ini. Hasil rata-rata kuat tekan beton pada umur 28 hari untuk JMF sebesar 21,05 MPa, BSA 1 sebesar 23,68 MPa, BSA 2 sebesar 22,23 MPa, BSA 3 sebesar 14,39 MPa, BSA 4 sebesar 13,34 MPa, dan BSA 5 Sebesar 20,14 MPa. Ditarik kesimpulan dari hasil penelitian BSA 1 dengan campuran 5% abu sekam dan 15% abu arang menghasilkan rata-rata kuat tekan tertinggi yaitu sebesar 23,68 MPa.  

scholarly journals PENGARUH VARIASI DIAMETER MAKSIMUM AGREGAT DALAM CAMPURAN TERHADAP KEKUATAN TEKAN BETON

2019 ◽  
Vol 3 (1) ◽  
pp. 11-23
Author(s):  
Helwiyah Zain
Keyword(s):  
Compressive Strength ◽  
Maximum Diameter ◽  
Concrete Aggregate ◽  
Test Results ◽  
Natural Mineral ◽  
Size Selection ◽  
Concrete Mix ◽  
Compressive Strength Of Concrete ◽  
Average Compressive Strength

Aggregate is a natural mineral grains that serve as filler in concrete mix, and the greatest material contained in the concrete. These material influence on the properties of concrete, so that the diameter size selection is essential in making the concrete. This study aims to determine the effect of variations of aggregate maximum diameter to the compressive strength of concrete. In this study used 15 specimens, were divided into 3 groups witch each of 5 specimens. Each group is distinguished aggregate maximum diameter: 31.5 mm, 16 mm, and 8 mm. Specimens used in this study is the specimen cylinder with a diameter of 15 cm and 30 cm high. Speciment tested done at age of concrete 28 days. The average compressive strength of concrete for each group of test based on variations of  the aggregate maximum diameter is: for the aggregate maximum diameter of 31.5 mm = 249.67 kg / cm2; the aggregate maximum diameter 16 mm = 274.91 kg / cm2; and the aggregate maximum diameter of 8 mm = 326.74 kg / cm2. Based on these test results, show that the average compressive strength of the concrete for the aggregate maximum diameter of 16 mm is 10.11% stronger than the concrete with the aggregate maximum diameter of 31.5 mm; and the strength of concrete aggregate maximum diameter of 8 mm, 30.87% stronger than the concrete with aggregate maximum diameter of 31.5 mm.

scholarly journals Analysis Of Use Sea Sand as A Fine Aggregate Replacement To Strong Press Concrete

2021 ◽  
Vol 1 (3) ◽  
pp. 1-6
Author(s):  
Fachrul Arya Sanjaya ◽  
Sapto Budy Wasono ◽  
Diah Ayu Restuti Wulandari
Keyword(s):  
Compressive Strength ◽  
Building Material ◽  
Fine Aggregate ◽  
River Sand ◽  
Concrete Material ◽  
Sea Sand ◽  
Concrete Cylinders ◽  
Compressive Strength Of Concrete ◽  
Average Compressive Strength

Concrete is a composite building material made from a combination of aggregate and cement. The limitation of concrete material, in this case, is a fine aggregate (river sand). The utilization of sea sand as an alternative to fine aggregate in the manufacture of concrete is     motivated by the availability of sea sand in nature in very large quantities. This study aims to determine the comparison and how much the compressive strength of concrete produced when using sea sand. The test was carried out when the specimens were 7, 14, and 28 days old with the specimens used in this study were concrete cylinders with a diameter of 15 cm and a height of 30 cm. The results showed that the use of sea sand as a substitute for fine aggregate showed an average compressive strength in 7 days of 18.86 MPa, an average compressive strength of 14 days of 25.52 MPa, an average compressive strength of 28 days of 29.00 MPa. Then for the average compressive strength value of the use of river sand in 7 days is 17.17 MPa, the average compressive strength of 14 days is 23.24 MPa, the average compressive strength of 28 days is 26.41 MPa.

scholarly journals Penelitian Beton dengan Penambahan Abu Sekam Padi dan Limbah Keramik sebagai Substitusi Semen

2020 ◽  
Vol 3 (2) ◽  
pp. 275
Author(s):  
Olyndia Febrianita ◽  
Ahmad Ridwan ◽  
Yosef Cahyo Setianto Poernomo
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cylindrical Specimen ◽  
National Standard ◽  
Construction Sector ◽  
Ceramic Waste ◽  
Concrete Mixtures ◽  
Compressive Strength Of Concrete ◽  
Average Compressive Strength

Concrete is a technology that continues to develop in the construction sector. Continues to increase in terms of cost. The need for materials to form concrete requires innovation in the use of concrete mixtures. One of them is using the innovation of rice husk ash and ceramic waste. These ingredients is held in the cement content, namely rice husk ash containing silica and ceramic waste containing alumina. The method used refers to the Indonesian National Standard with a cylindrical specimen measuring 15x30 cm tested at 28 days, and the planned quality is fc '14.5 Mpa. The research objective was to determine the compressive strength and slump value by adding a mixture of rice husk ash 3%, 6%, 9%, 12%, and ceramic waste 3% by weight of cement. The results showed that the slump value decreased with the lowest value of 13.5 cm. the results of the compressive strength of concrete with the addition of rice husk ash and ceramic waste have not achieved the planned quality. The average compressive strength that has the highest value is the addition of 9% rice husk ash with 9% ceramic waste, namely 6.53 Mpa.Beton merupakan salah satu teknologi yang terus berkembang di bidang konstruksi. Terus meningkat dari segi biaya, Kebutuhan bahan untuk membentuk beton membutuhkan inovasi dalam penggunaan campuran beton. Salah satunya dengan inovasi pemanfaatan abu sekam padi dan limbah keramik. Bahan tersebut tertahan di dalam kandungan semen yaitu abu sekam padi yang mengandung silika dan limbah keramik yang mengandung alumina. Metode yang digunakan mengacu pada Standar Nasional Indonesia dengan spesimen silinder berukuran 15x30 cm yang diuji pada 28 hari, dan kualitas yang direncanakan adalah fc '14 .5 Mpa. Tujuan penelitian untuk mengetahui kuat tekan dan nilai slump dengan menambahkan campuran abu sekam padi 3%, 6%, 9%, 12%,   dan   limbah   keramik   3%   dari   berat  semen.   Hasil Penelitian menunjukkan nilai slump mengalami penurunan dengan nilai terendah 13,5cm. Hasil kuat tekan beton dengan penambahan abu sekam padi dan limbah keramik belum mencapai kualitas yang direncanakan. Kuat tekan rata-rata yang memiliki nilai tertinggi adalah penambahan abu sekam 9% dengan limbah keramik 9% yaitu 6,53 Mpa

scholarly journals PENELITIAN KUAT UJI TEKAN BETON DENGAN MEMANFAATKAN LIMBAH BETON YANG TIDAK TERPAKAI

UKaRsT ◽  
2017 ◽  
Vol 1 (2) ◽  
pp. 21
Author(s):  
Herlan Pratikno
Keyword(s):  
Compressive Strength ◽  
Civil Engineering ◽  
Strength Test ◽  
High Quality ◽  
Engineering Department ◽  
Compressive Strength Of Concrete ◽  
Maximum Compressive Strength ◽  
Department Faculty ◽  
Average Compressive Strength ◽  
Test Objects

ABSTRACT PrasetyoUtomo 2019. Civil Engineering Department, Faculty of Engineering, University of Kadiri in Kediri. Research on Concrete Press Strength Test by Utilizing Unused Concrete Waste. Supervised by Supervisor 1. Mr. Dr. Ahmad Ridwan, SE. ST. MT. and Supervisor 2. Mr. Yosef Cahyo SP. ST. MT. M.Eng. Concrete has many classifications and characteristics, from low-quality, medium to high-quality concrete. Along with the development of technology today many types of materials and mixtures are used. Additional materials include concrete that is not used. Tests of test objects in this study used a mixture of 10%, 15%, 20% and 25%. The variation is carried out at the age of 7, 21, and 28 days with the parameters used are only compressive strength.The results showed that the average compressive strength of concrete in each variation was 10% (22,155Mpa), 15% (17,514 Mpa), 20% (15,271 Mpa) and 25% (12,714 Mpa). With the target of K300 compressive strength, the result is mixed substitution with a maximum compressive strength percentage of 10% (22,155Mpa).

scholarly journals ANALISIS KUAT TEKAN BETON DENGAN AGREGAT PASIR DARI BOYOLALI MENGGUNAKAN BAHAN TAMBAH ABU SEKAM PEMBAKARAN KAYU DAN SERBUK HALUS ARANG BRIKET

Teknika ◽  
2018 ◽  
Vol 13 (2) ◽  
pp. 47
Author(s):  
Timbul Catur Suwiyono ◽  
Purwanto Purwanto ◽  
Anik Kustirini
Keyword(s):  
Compressive Strength ◽  
Fine Powder ◽  
Concrete Research ◽  
Test Results ◽  
Wood Burning ◽  
Compressive Strength Of Concrete ◽  
Concrete Testing ◽  
Average Compressive Strength

<p><em>Concrete research has been carried out, this study utilizes wood burning husk ash and fine powder of briquette charcoal as an added material from the weight of cement and sand used from Boyolali. This study aims to determine the compressive strength of concrete with materials added to wood burning husk ash and fine powder of briquette charcoal. Material variations added wood burning husk ash and briquette charcoal fine powder by 0%, 10%, 20% by weight of cement. This study used 0.5 fas and concrete testing at the age of 7 days, 14 days and 28 days. From the test results the average compressive strength of concrete at the age of 7 days with a material variation of 10% added was 15.05 MPA, and a material variation of 20% added was 13.47 MPA. Concrete at the age of 14 days with a material variation of 10% added is 15.76 MPA, and a material variation of 20% is 13.18 MPA. concrete at 28 days with a material variation of 10% added is 14.32 MPA, and a 20% added material variation is 14.32 MPA.</em></p><p><em> </em></p><p><strong><em>Keywords; </em></strong><em>wood burning husk ash, compressive strength, fine briquette charcoal powder</em></p><p><em> </em></p><p align="center"><strong>Abstrak</strong></p><p>Penelitian beton telah banyak dilakukan, penelitian ini memanfaatkan abu sekam pembakaran kayu dan serbuk halus arang <em>briket</em> sebagai bahan tambah dari berat semen dan pasir yang digunakan dari boyolali. Penelitian ini bertujuan untuk mengetahui kuat tekan beton dengan bahan tambah abu sekam pembakaran kayu dan serbuk halus arang <em>briket</em>. Variasi bahan tambah abu sekam pembakaran kayu dan serbuk halus arang <em>briket</em> sebesar 0%, 10%, 20% dari berat semen. Penelitian ini menggunakan fas 0,5 dan pengujian beton pada umur 7 hari, 14 hari dan 28 hari. Dari hasil pengujian kuat tekan rata-rata beton pada umur 7 hari dengan variasi bahan tambah 10% adalah 15,05 MPA, dan vari asi bahan tambah 20% adalah 13,47 MPA. Beton pada umur 14 hari dengan variasi bahan tambah 10% adalah 15,76 MPA, dan variasi bahan tambah 20% adalah 13,18 MPA. beton pada umur 28 hari dengan variasi bahan tambah 10% adalah 14,32 MPA, dan vari asi bahan tambah 20% adalah 14,32 MPA.</p><p><strong> </strong></p><p><strong>Kata kunci : </strong>abu sekam pembakaran kayu, kuat tekan, serbuk halus arang briket</p>

Effects of the Usage of Wasted Diatomite and Phase Change Materials as Partial Replacement of Cement on the Mechanical Properties of Concrete

2020 ◽  
Vol 847 ◽  
pp. 161-166
Author(s):  
Yeng Fong Shih ◽  
Wei Cheng Hou ◽  
Venkata Krishna Kotharangannagari ◽  
Ming Gin Lee
Keyword(s):  
Compressive Strength ◽  
Surface Temperature ◽  
Phase Change ◽  
Phase Change Material ◽  
High Strength Concrete ◽  
High Strength ◽  
Internal Temperature ◽  
Compressive Strength Of Concrete ◽  
Change Material ◽  
Average Compressive Strength

In this study, the wasted diatomite was added to the cement mortar after heat treatment, and the potential of replacing the silica fume to prepare high-strength concrete was discussed. In addition, the diatomite was used to adsorb the polyethylene glycol (PEG) to prepare a shape-stabilized phase change material (SSPCM). Moreover, the compressive strength of concrete and its performance as a temperature-regulating building material by the addition of SSPCM were investigated. The results show that the average compressive strength of the diatomite-containing test mortar after adding a water reducing agent reaches 505.27 kg/cm2, which meets the requirements of the compressive strength of the high-strength concrete. The thermal analysis results show that the diatomite successfully adsorbs PEG and the average compressive strength of SSPCM-containing test mortar reaches 235.42 kg/cm2, which meets the basic requirements of the compressive strength of concrete. The illuminating test shows that the internal temperature of the pristine cement test mortar is mostly higher than the surface temperature. However, the test mortar prepared by adding the SSPCM has a maximum reduction of internal temperature of 2.24 °C as compared with the surface temperature. It is shown that the diatomite which adsorbed phase change material can achieve the functions of lowering the internal temperature and adjusting the temperature of building materials.

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