Results 31 to 40 of about 1,001 (153)

COMPARATIVE ANALYSIS AND EVALUATION OF THE CONVERSION FORMULA FOR REBOUND NUMBER OF SCHMIDT HAMMER TEST AND UNCONFINED COMPRESSIVE STRENGTH TEST – CASE STUDY: ANDESITE ROCK SLOPE IN GRAHA PUSPA, LEMBANG FAULT

Rudarsko-geološko-naftni Zbornik
The Unconfined Compressive Strength (UCS) test is one of the most common methods for determining the rock material strength value. However, the size and complexity of the instrument do not allow UCS testing to be carried out in the field.
Antonina Pri Martireni, Wira Cakrabuana, Koko Hermawan, Khori Sugianti, Arifan Jaya Syahbana, Sunarya Wibawa, Eko Soebowo, Adrin Tohari, Hasan Tri Atmojo   +8 more
doaj   +1 more source

Correlation Between Cerchar Abrasivity Index with Rock Properties in Sandstone and Tuff Samples [PDF]

Muhandisī-i manābi̒-i ma̒danī
The abrasivity of materials is of vital importance in selecting an affordable excavation method in the early stages of a tunneling project. The amount of specific energy and the Mode I and Mode II stress intensity factors in the eroded disc is more than ...
M. Hosseini, D. Fakhri, N. Behnam
doaj   +1 more source

Understanding the Long-Term Development of Portland Pozzolan Cement Concrete Post 28 Days

Materials Proceedings
This study examines the age-dependent development of compressive strength in Portland pozzolan cement (PPC) concrete under both curing and non-curing conditions.
Muhammad Faisal, Jessica Sjah, Josia Irwan Rastandi   +2 more
doaj   +1 more source

A Green Infrastructure SDGS Num 11: Approach Planning Design Model Reliability of Permeability and Concrete Quality Rural Roads P3MD Program in Wonogiri [PDF]

E3S Web of Conferences
Design planning permeability and quality of rural concrete road construction work in the Program Pembangunan dan Pemberdayaan Masyarakat Desa (P3MD) of the Ministry of Villages, Development of Disadvantaged Regions and Transmigration in Wonogiri, which ...
Ristanto Iwan, Widodo Slamet, Nayono Satoto Endar   +2 more
doaj   +1 more source

Matched Filter for Acoustic Emission Monitoring in Noisy Environments: Application to Wire Break Detection

Acoustics
Regular inspections of important civil infrastructures are mandatory to ensure structural safety and reliability. Until today, these inspections are primarily conducted manually, which has several deficiencies.
Alexander Lange, Ronghua Xu, Max Kaeding, Steffen Marx, Joern Ostermann   +4 more
doaj   +1 more source

Prediction of Geopolymer Concrete Compressive Strength Utilizing Artificial Neural Network and Nondestructive Testing

Civil and Environmental Engineering, 2022
A promising substitute for regular concrete is geopolymer concrete. Engineering mechanical parameters of geopolymer concrete, including compressive strength, are frequently measured in the laboratory or in-situ via experimental destructive tests, which ...
Almasaeid Hatem, Alkasassbeh Abdelmajeed, Yasin Bilal   +2 more
doaj   +1 more source

Prediction of the compressive strength of high-performance self-compacting concrete by an ultrasonic-rebound method based on a GA-BP neural network.

PLoS ONE, 2021
To address the problem of low accuracy and poor robustness of in situ testing of the compressive strength of high-performance self-compacting concrete (SCC), a genetic algorithm (GA)-optimized backpropagation neural network (BPNN) model was established ...
Guoqiang Du, Liangtao Bu, Qi Hou, Jing Zhou, Beixin Lu   +4 more
doaj   +1 more source

Applying Artificial Intelligence to Improve On-Site Non-Destructive Concrete Compressive Strength Tests

Crystals, 2021
In the construction industry, non–destructive testing (NDT) methods are often used in the field to inspect the compressive strength of concrete. NDT methods do not cause damage to the existing structure and are relatively economical.
Tu Quynh Loan Ngo, Yu-Ren Wang, Dai-Lun Chiang   +2 more
doaj   +1 more source

Research on the Rebound Hammer Testing of High-Strength Concrete’s Compressive Strength in the Xinjiang Region

Buildings, 2023
Enhancing the assessment of compressive strength and the efficiency of rebound hammers in non-destructive testing for high-strength concrete is an urgent issue in construction engineering. This study involved C50 to C90 high-strength concrete specimens, utilizing rebound hammers with nominal energies of 4.5 J and 5.5 J, along with a compression machine.
Chen, Jinming, Jin, Qiang, Dong, Baoli, Dong, Cun   +3 more
openaire   +2 more sources

Strength- and Moisture-Related Studies of Historical Building Materials: A Case Study from Southern Estonia

Buildings
Demolition of existing buildings turns building products into waste. The amount of demolition waste is increasing globally. The current case study is an example of fulfilling the EU Waste Framework Directive of reducing demolition waste by reuse of ...
Aljona Gineiko, Mihkel Kiviste
doaj   +1 more source