scholarly journals HUBUNGAN CEPAT RAMBAT GELOMBANG ULTRASONIK TERHADAP MUTU BETON TANPA AGREGAT KASAR

2019 ◽  
Vol 2 (1) ◽  
pp. 199
Author(s):  
David Chandra ◽  
Daniel Christianto
Keyword(s):  
Silica Fume ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Destructive Test ◽  
Non Destructive

Dalam penelitian ini mempelajari mengenai hubungan cepat rambat gelombang ultrasonik terhadap mutu beton tanpa agregat kasar. Campuran beton yang dibuat tidak menggunakan agregat kasar, hanya semen OPC, pasir silika, air, silica fume, tepung marmer dan superplasticizer. Tujuan tidak digunakannya agregat kasar adalah untuk meningkatkan homogenitas material penyusun beton dan meningkatkan kepadatan kering beton. Maka dari itu dalam material penyusun terdapat tepung marmer sebagai filler dan superplasticizer untuk meningkatkan kepadatan kering, ada juga silica fume juga sebagai filler dan meningkatkan kepadatan kering. Benda uji yang dibuat adalah beton tanpa agregat kasar berbetntuk silinder dengan diameter 10 cm dan tinggi 20 cm. Nilai cepat rambat didapatkan dengan menggunakan salah satu metode non-destructive test (NDT) yaitu tes Ultrasonic Pulse Velocity (UPV) dengan cara direct/langsung. Nilai kuat tekan didapatkan dengan melakukan uji tekan pada benda uji. Setelah nilai kecepatan dan kuat tekan didapatkan, dibuatlah diagram pencar dan regresinya untuk mendapatkan formula kuat tekan yang baru. Dari penelitian ini dapat disimpulkan bahwa jika nilai cepat rambat semakin tinggi maka nilai mutu beton cenderung tinggi juga, semakin berat massa benda uji maka nilai cepat rambat dan kuat tekan cenderung tinggi juga. Dihasilkan juga formula kuat tekan (f’c) dari hasil regresi yaitu :  dengan satuan standard international.

Assessment of Compressive Strength for RC Building Using the Non-Destructive Test and the SonReb Method: A Case Study

2021 ◽  
Vol 1021 ◽  
pp. 45-54
Author(s):  
Mohammed Al-Helfi ◽  
Ali Allami
Keyword(s):  
Compressive Strength ◽  
Concrete Strength ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Test Method ◽  
Technical Institute ◽  
Existing Building ◽  
Destructive Test ◽  
Non Destructive

Non-Destructive methods have greater advantage in assessing the homogeneity, compressive strength, corrosion of rebars in concrete etc. of damaged structures. The aim of the present study is to assess the existing building, which is 41 year old, in the Technical Institute of Amara affiliated with the Southern Technical University, Maysan, Iraq. The research focus on the assessment of the concrete strength and the inspection of the damages in the building. Besides the visual inspection, the ultrasonic pulse velocity and schmidt hammer were used as a non-destructive test method for testing of 30 columns and 15 beams for a building consisting of three floors. The concrete compressive strength was estimated by using SonReb method. The equations proposed by Gasparik, 1984, Di Leo & Pascale, 1994, Arioglu et al., 1996, Cristofaro et al. (EXP), 2020 and Cristofaro et al (PW), 2020 were used for assessment the compressive strength of oncrete. The non-destructive test results indicated that the average strength of the structural elements greater than the design compressive strength of the tested elements. Therefore, the building can be considered structurally is safe.

scholarly journals Structural Audit of Old Building And It's Strengthening : Review

2020 ◽  
pp. 563-566
Author(s):  
Monis Azhar Ansari ◽  
Shrikant Solanke ◽  
Aashish Soni
Keyword(s):  
Human Life ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Rebound Hammer ◽  
Destructive Test ◽  
Prone Area ◽  
Pulse Echo ◽  
Non Destructive ◽  
Pulse Echo Method

We are building the structures rapidly in the area where there is requirement of the structures. Every structure has its own service life. Every structure is designed by assuming its life of existence. Some of the structures gets more life than expected and some gets fail in achieving its life. Any technology or material has its limitation to withstand. Many of the structures of R.C.C. are located in Seismic prone area. The structures gets damaged due to earthquake and the structures which becomes old should be checked that whether it has the strength of existence or not. The structures should be audited timely for the safety of the human life as well as for the nearby structures. The structures can be checked by various methods of Non-Destructive Test (Rebound Hammer Test, Ultrasonic Pulse Velocity Method, Pulse Echo Method, Probe Penetration Test, Destructive Test. Rebound Hammer Test of Non-Destructive Test is used in this paper to check the strength of an institutional building. When examining the structure, this paper aims to expand the life of structure. Different techniques of Retrofitting is given to the structural member which is unsafe. By applying the retrofitting, the structure can be made safe.

scholarly journals ANALISIS PENURUNAN KUALITAS MUTU KAYU PADA BANGUNAN CAGAR BUDAYA DENGAN METODE NON DESTRUCTIVE TEST (Studi Kasus Bangunan Cagar Budaya Masjid Gedhe Mataram Daerah Istimewa Yogyakarta)

2020 ◽  
Vol 16 (2) ◽  
pp. 191-199
Author(s):  
Darmono Darmono ◽  
Maris Setyo Nugroho ◽  
Slamet Widodo ◽  
Faqih Ma’arif
Keyword(s):  
Mechanical Properties ◽  
Cultural Heritage ◽  
Field Testing ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Test Results ◽  
Destructive Test ◽  
The Difference ◽  
Non Destructive

ABSTRAKPenelitian bertujuan untuk mengetahui mechanical properties material kayu Bangunan Cagar Budaya dengan non-destructive test. Penelitian ini menggunakan metode pengujian lansung dilapang menggunakan Ultrasonic Pulse Velocity (UPV). Terdapat dua variable yang digunakan yaitu kolom cacat dan kolom utuh untuk mengetahui perbedaan nilai cepat rambat gelombang. Jumlah sampel yang digunakan sebanyak enam buah dengan pengambilan data masing-masing sampel sebanyak lima kali. Hasil pengujian menunjukkan bahwa nilai kadar air dan berat jenis kayu sebesar 15,03% dan 0,62. Sedangkan hasil pengujian UPV pada kolom cacat dan utuh diperoleh cepat rambat gelombang sebesar 0,71 km/s dan 1,21 km/s. Berdasarkan hasil analisis menunjukkan bahwa nilai MOEd pada kolom utuh sebesar 9.374,37 MPa, sedangkan MOEd pada kolom cacat sebesar 3.240,62 MPa. Kata kunci: mechanical properties kayu, bangunan cagar budaya, ultrasonic pulse velocity ABSTRACTThis study aims to determine the mechanical properties of the wood material for the Cultural Heritage Building with a non-destructive test. This study used a direct field testing method using Ultrasonic Pulse Velocity (UPV). There are two variables used, namely the defective column and the solid column to determine the difference in the value of the fast propagation of the waves. The number of samples used was six with data collection for each sample five times. The test results showed that the moisture content and density of wood were 15.03% and 0.62. While the UPV test results on defective and solid columns obtained wave propagation velocity of 0.71 km / s and 1.21 km / s. Based on the analysis result, it shows that the MOEd value in the whole column is 9,374.37 MPa, while the MOEd in the defective column is 3,240.62 MPa. Keywords: mechanical properties of wood, cultural heritage buildings, ultrasonic pulse velocity

REVIEW PAPER ON NON-DESTRUCTIVE TESTING AND THEIR ACCURACIES TO MEASURE THE MECHANICAL PROPERTIES OF CONCRETE

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
Adan Bishar Hussein ◽  
Mohamed Abdi
Keyword(s):  
Building Materials ◽  
Concrete Structures ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Test Methods ◽  
Pulse Velocity ◽  
Destructive Testing ◽  
Capacity Limits ◽  
Destructive Test ◽  
Non Destructive

This paper aims to respond to these concerns through the identification and explanation of the most popular and effective NDT approaches in concrete structures and also their accuracies. The fundamentals of the non-destructive test methods are discussed in terms of their capacity, limits, inspection techniques and interpretations. Factors that affect the performance of NDT an approach are discussed and means of mediate their influence was suggested. Ultrasonic pulse velocity and SONREB methods of Non-destructive test are showed in this paper as past experiments of NDT. NDT of concrete was found to be increasingly recognized as a way of measuring the strength, integrity, resilience and other properties of existing concrete structures, Perceptions of NDT inadequacy are attributed to lack of knowledge of the building materials and the NDT approaches themselves. The goal of this paper is to resolve these issues reviewing some articles already done and defining and discussing the most common popular NDT methods applied to concrete structures.

scholarly journals Petunjuk Dasar Pemeriksaan Bangunan Existing Metode Non-Destructive Test: Studi Kasus Bangunan Industrial Struktur Baja

2019 ◽  
Vol 2 (2) ◽  
pp. 63-68
Author(s):  
Usman Wijaya
Keyword(s):  
Brinell Hardness ◽  
Hardness Test ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Destructive Test ◽  
Non Destructive

Beberapa peraturan di negara maju mensyaratkan perlunya pemeriksaan bangunan existing tiap kali adanya update peraturan baru. Di-Indonesia sendiri belum ada peraturan yang mengatur perlunya pemeriksaan bangunan setiap ada update peraturan, namun belakangan Kementerian Pekerjaan Umum dan Perumahan Rakyat (PUPR) menginstruksikan untuk menerbitkan sertifikat laik fungsi bangunan (SLF) setiap 5 tahun dimana salah satu persyaratannya mensyaratkan pemeriksaan bangunan existing. Umumnya alasan dilakukan pemeriksaan bangunan existing karena adanya update peraturan, umur bangunan, perubahan fungsi bangunan, dan kerusakan akibat gempa. Pada Studi kasus ini bangunan industri dibangun tahun 1990, akibat update peraturan dan umur bangunan, maka bangunan akan di periksa dengan metode non-destructive test (NDT) menggunakan Brinell Hardness Test dan Ultrasonic Pulse Velocity (UPV) Test. Metode NDT dipilih karena tidak mengganggu operasional bangunan. Dari hasil pengujian NDT dan analisis struktur berdasarkan data aktual dilapangan menunjukan beberapa struktur tidak memenuhi kriteria desain dengan peraturan terbaru AISC 360-16 dan perlu retrofit untuk kondisi yang tidak memenuhi kriteria desain.Kata kunci :  Assessment, NDT Test, ASD, LRFD

scholarly journals Evaluating the Durability of Green Cement Mortar Using Ultrasonic Pulse Velocity

2021 ◽  
Vol 877 (1) ◽  
pp. 012049
Author(s):  
Ali Abdulridha ◽  
Saif S. AlQuzweeni ◽  
Rasha S. AlKizwini ◽  
Zahra A. Saleh ◽  
K. S. Hashem
Keyword(s):  
Silica Fume ◽  
Cement Mortar ◽  
Experimental Studies ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Negative Consequences ◽  
Kiln Dust

Abstract Various experimental studies have highlighted the negative consequences of Portland cement on health and the environment, such as toxic emissions and alkaline sewage. The development of environmentally acceptable substitutes for cement is thus one of the objectives of current investigations. The proposed environmental alternatives to cement, nevertheless, might have detrimental impacts on the concrete’s characteristics. This investigation intends to study the suitability as alternatives to cement in cement mortar, using industrial wastes like silica fume and cement kiln dust. As a replacement for cement, the cement mortars developed in this research continue from 0% to 60% silica fume and cement kiln dust. Ultrasonic pulse velocity tests at 1 to 4 weeks of age were conducted on hardened specimens. The findings showed that a low reduction in the pulse velocity resulted from high proportions of silica fume and cement kiln dust replacements, whereas an improvement in the characteristics of the mortars with low replacement ratios. Using low kiln dust and silica fume of 20 to 40%, the durability of mortars may increase.

scholarly journals Assessment of Concrete Compressive Strength by Ultrasonic Non-Destructive Test

2021 ◽  
Vol 318 ◽  
pp. 03004
Author(s):  
AbdulMuttalib I. Said ◽  
Baqer Abdul Hussein Ali
Keyword(s):  
Compressive Strength ◽  
Salt Content ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Experimental Program ◽  
Concrete Compressive Strength ◽  
Statistical Program ◽  
Non Destructive ◽  
Accurate Relation

This paper has carried out an experimental program to establish a relatively accurate relation between the ultrasonic pulse velocity (UPV) and the concrete compressive strength. The program involved testing concrete cubes of (100) mm and prisms of (100×100×300) cast with specified test variables. The samples are tested by using ultrasonic test equipment with two methods, direct ultrasonic pulse (DUPV) and surface (indirect) ultrasonic pulse (SUPV) for each sample. The obtained results were used as input data in the statistical program (SPSS) to predict the best equation representing the relation between the compressive strength and the ultrasonic pulse velocity. In this research 383 specimens were tested, and an exponential equation is proposed for this purpose. The statistical program has been used to prove which type of UPV is more suitable, the (SUPV) test or the (DUPV) test, to represent the relation between the ultrasonic pulse velocity and the concrete compressive strength. In this paper, the effect of salt content on the connection between the ultrasonic pulse velocity and the concrete compressive strength has also been studied.

Non-Destructive Testing for Concrete: Dynamic Modulus and Ultrasonic Velocity Measurements

2011 ◽  
Vol 243-249 ◽  
pp. 165-169 ◽  
Author(s):  
Iqbal Khan Mohammad
Keyword(s):  
Compressive Strength ◽  
Modulus Of Elasticity ◽  
Dynamic Modulus ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Dynamic Modulus Of Elasticity ◽  
Non Destructive

Nondestructive testing (NDT) is a technique to determine the integrity of a material, component or structure. The commonly NDT methods used for the concrete are dynamic modulus of elasticity and ultrasonic pulse velocity. The dynamic modulus of elasticity of concrete is related to the structural stiffness and deformation process of concrete structures, and is highly sensitive to the cracking. The velocity of ultrasonic pulses travelling in a solid material depends on the density and elastic properties of that material. Non-destructive testing namely, dynamic modulus of elasticity and ultrasonic pulse velocity was measured for high strength concrete incorporating cementitious composites. Results of dynamic modulus of elasticity and ultrasonic pulse velocity are reported and their relationships with compressive strength are presented. It has been found that NDT is reasonably good and reliable tool to measure the property of concrete which also gives the fair indication of the compressive strength development.

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