Materials, Free Full-Text
Por um escritor misterioso
Descrição
To study the variation law of ultrasonic parameters of self-compacting concrete before and after damage under uniaxial compression test conditions, the C30 self-compacting concrete blocks stored for 7 days and 28 days were subjected to ultrasonic nondestructive testing, and the variation law of the sound time, amplitude, and sound velocity before and after the damage of self-compacting concrete blocks was emphatically analyzed. The concrete acoustic detection software was introduced to judge and analyze the abnormal values of the parameters of each measuring point, and the defect distribution map of each test block was obtained. The results showed that after curing the self-compacting concrete test block for 7 days and 28 days, the average value of sound time before and after the failure of each measuring point of the test block is small, and the average value of sound time before the failure is less than that after; the average amplitude after failure is smaller than that before failure, and the amplitude of some measuring points will be smaller than that before. The average sound velocity after failure is less than that before failure, and the internal defects appear and the structure is not dense. This study provides a theoretical basis for the application of ultrasonic detection technology in the field of self-compacting concrete and also provides a practical basis for the stability monitoring and failure warning of self-compacting concrete.
Advanced Materials: Vol 30, No 44
Advanced Functional Materials: Vol 32, No 5
Materials, Free Full-Text
Advanced Healthcare Materials: Vol 12, No 1
Tribology of carbon nanotubes - About Tribology
Dispersion-free highly accurate color recognition using excitonic 2D materials and machine learning - ScienceDirect
Sunglasses, Sunglasses, Women's
Metals - Open Access Journal on X: #mdpimetals 💥Highly-cited paper sharing: 📔 Title: Elaboration of #Metallic Materials by #SPS: Processing, Microstructures, Properties, and Shaping 📌The full-text paper can be viewed and downloaded
Sunglasses, Sunglasses, Women's
Materials, Free Full-Text
General Principles of Organic Syntheses : P. Alexeyeff : Free Download, Borrow, and Streaming : Internet Archive
AeroNews (u/AeroNews) - Reddit
Materials, Free Full-Text
The NCLC Digital Library
de
por adulto (o preço varia de acordo com o tamanho do grupo)
