Results 11 to 20 of about 23,347 (229)

Study on strength and ultrasonic pulse velocity of cemented aeolian sand backfill under multiple factors using response surface method [PDF]

Scientific Reports
Aeolian sand (AS) has been increasingly used to prepare cemented AS backfill (CASB) for coal mining. Although strength is an important determinant of the CASB performance, existing research on the CASB has not addressed the effects of multi-factor ...
Yingxi Li, Shushuai Wang, Gang Li, Qinghe Yang   +3 more
doaj   +2 more sources

Distribution of Ugandan Passiflora Virus (Potyvirus passiflorafricanse) in Major Passion Fruit Growing Areas in Rwanda [PDF]

Viruses
Passion fruit (Passiflora edulis Sims) is an important economic fruit crop in Rwanda grown for both domestic consumption and export markets. However, viral diseases pose a significant threat to passion fruit production.
Esperance Munganyinka, Bancy W. Waweru, Marie Claire Kanyange, Josiane Umubyeyi, Ghislain Niyonteze, Lydie Kankundiye, Melanie Mukashimwe   +6 more
doaj   +2 more sources

A novel geotechnical approach: non-destructive prediction of strength and swelling behavior of nano-alumina and cement stabilized clays using ultrasonic pulse velocity [PDF]

Scientific Reports
In this study, a novel approach was presented for non-destructive prediction of the strength and swelling behavior of expansive clay soils treated with cement and nano aluminum oxide (nano Al2O3). Clay soils were stabilized with different cement contents
Ghodratollah Azizi, Asskar Janalizadeh Choobbasti, Saman Soleimani Kutanaei   +2 more
doaj   +2 more sources

Mathematical model for predicting the ultrasonic pulse velocity of concrete

Cogent Engineering, 2023
This paper proposes a mathematical model approach to predict the Ultrasonic Pulse Velocity (UPV) of concrete. This paper presents the formulation, calibration, evaluation, and validation of the proposed UPV model. An experimental program was developed to
Fayez Moutassem, Issam Miqdadi
doaj   +1 more source

Impact of waste materials (glass powder and silica fume) on features of high-strength concrete

Open Engineering, 2023
Pozzolanic materials, glass powder, and silica fume (SF) have all been used in concrete recently as a partial cement substitution to increase the strength of the concrete.
Saify Samir, Radhi Mohammed Sattar, Al-Mashhadi Samer A., Mareai Basim, Jabr Sarah Fadel, Mohammed Zainab Adel, Al-Khafaji Zainab, Al-Husseinawi Fatimah   +7 more
doaj   +1 more source

Concrete Structures Evaluation and Analysis of the Kalikuto Bridge on the Batang Semarang Toll Road Segment

Media Komunikasi Teknik Sipil, 2023
The structural strength of a bridge is critical for the safety and security of road users, particularly on toll roads. The existing concrete structure must be evaluated on a regular basis as part of the bridge's health inspection.
Bobby Rio Indriyantho, Aries Susanty, Sumardi Sumardi, Nuroji Nuroji   +3 more
doaj   +1 more source

Physical and mechanical characterization of sand replaced stone dust concrete

Materials Research Express, 2021
In this research work, physical, chemical, morphological, and mechanical behavior as partial replacement of fine aggregate in concrete. Stone dust was acquired from three different sources i.e.
Muhammad Humayun, Muhammad Zeeshan Ahad, Ubaid ur Rehman Ghori, Amir Naveed, Fawad Ahmad, Muhammad Arif, Shaista Afridi, Muhammad Sadiq, Saeed Ullah Jan, Muhammad Asif   +9 more
doaj   +1 more source

New Cucumis Rootstocks for Melon: ‘UPV-FA’ and ‘UPV-FMy’ [PDF]

HortScience, 2017
The authors also thank the MINECO projects AGL2013-49040-C2-1-R and AGL2014-53398-C2-2-R, cofunded with FEDER funds.
Cáceres-Burbano, Andrés, PERPIÑA MARTIN, GORKA, Ferriol Molina, María, Picó Sirvent, María Belén, Gisbert, Carmina   +4 more
openaire   +3 more sources

Evolution of Mechanical Properties with Time of Fly-Ash-Based Geopolymer Mortars under the Effect of Granulated Ground Blast Furnace Slag Addition

Energies, 2020
Geopolymers are considered to alternatives to Portland cement, providing an opportunity to exploit aluminosilicate wastes or co-products with promising performances in the construction sector.
Mateusz Sitarz, Izabela Hager, Marta Choińska   +2 more
doaj   +1 more source

Development of Quality Assessment Criteria for Burnt Clay Bricks of Different Ages Based on Ultrasonic Pulse Velocity Test

Buildings, 2022
Burnt clay bricks are widely used as a construction material in Pakistan, and their testing for quality confirmation is frequently needed for new and old bricks used in existing structures.
Rizwan Azam, Muhammad Rizwan Riaz, Ehtasham Ul Haq, Ayman Shihata, Mohamed Zawam   +4 more
doaj   +1 more source