Article
Engineering, Geological
Gizem Aksu, Tugba Eskisar
Summary: This study investigates the effect of adding nanosilica (NS) on the mechanical properties of clay, clayey sand, and sand. The research examines various engineering properties, such as compaction, compressive strength, ultrasonic pulse velocity (UPV), freeze-thaw resistance, and shear strength. The results show that the presence of NS and cement affects the consistency, compaction, and strength properties of the soils. NS can improve the geomechanical properties of the soils by producing a denser and more uniform structure.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2023)
Article
Construction & Building Technology
Javad Jalali, Reza Noorzad
Summary: This paper presents a laboratory evaluation of the strength and durability behavior of treated clay with ISSA and PVA fiber. Results show that the inclusion of ISSA and fiber can increase soil strength, decrease brittleness, and exhibit a good correlation between UPV values and UCS test results. The study also assessed the durability of the treated soil against wetting-drying cycles, showing an increase in strength with increasing cycles followed by a decrease.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Tiegang Zhou, Huiyuan Zhang, Boyang Li, Liangyi Zhang, Wei Tan
Summary: This study aimed to assess the quality of rammed earth walls by establishing a strength measurement curve based on concrete strength measurement curves. The effects of additive content, type, curing time, and rebound (R) values and ultrasonic pulse velocity (UPV) values were considered. The results showed that the R value and UPV increased with increasing cement content, and increased and stabilized with curing time. The difference in R value between the dense and sparse zones was within ±1, and the difference in UPV was within ±0.2 km/s. The ultrasonic-rebound combined method was found to be more accurate in predicting the UCS than the single R or UPV method. SEM tests were conducted to further validate the results.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Geological
Kam Ng, J. Carlos Santamarina
Summary: Carbonate rocks are widely used in civil infrastructure and are important for geoenergy geoengineering. This study focuses on the properties of limestone carbonate rocks by analyzing data from Madison Limestone and published sources. The results show that the physical properties of carbonate rocks are highly dependent on porosity and can be described by a power model. The mechanical properties are found to be sensitive to porosity, and there is a porosity-independent ratio between stiffness and strength. The permeability of carbonate rocks varies greatly with changes in porosity.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Ali Hasanzadeh, Issa Shooshpasha
Summary: This study investigates the combined effects of silica fume particles and PET fibers on the engineering characteristics of cement-treated sand. Laboratory tests show that the addition of PET fibers up to their optimum content and length significantly improves the strength, stiffness, and ductility of the specimens. Relationships between UPV-UCS and E-50-E-u were proposed to evaluate the success of reinforcement and stabilization attempts based on non-destructive UPV tests. The findings of microstructural analyses are consistent with the results of UPV and unconfined compression tests.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Construction & Building Technology
Jiarong Shen, Qianjun Xu, Shouguang Wang
Summary: This study aims to visualize the thermal damage on a multiscale level and characterize it using ultrasonic pulse velocity (UPV). The experimental results of MIP, nitrogen adsorption, and SEM are used to visualize the thermal damage of concrete subjected to elevated temperatures. The UPV is then used to characterize the thermal damage and a compressive strength prediction model is proposed to reflect the strength evolution during drying at elevated temperatures.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Mohamed Abdelhedi, Rateb Jabbar, Ahmed Ben Said, Noora Fetais, Chedly Abbes
Summary: This study used state-of-the-art machine learning techniques to predict the Uniaxial Compressive Strength (UCS) of carbonate rocks using data collected from scientific studies conducted in 16 countries. The results showed that XGBoost performed the best, with the lowest Mean Absolute Error, lowest Root Mean Square Error, and coefficients of determination ranging from 0.91 to 0.94.
EARTH SCIENCE INFORMATICS
(2023)
Article
Construction & Building Technology
Lei Wang, Qiancheng Zhang, Jin Yi, Jiwang Zhang
Summary: This paper focuses on the ultrasonic pulse velocity (UPV) characteristics of coral concrete, especially with respect to porosity and compressive strength. The study found that the diverse morphology and complex internal structure of the coral aggregate greatly affect the homogeneity of its UPV. The study also discovered a strong correlation between the porosity, compressive strength, and UPV of the coral concrete, allowing for the inference of strength through the UPV method.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Energy & Fuels
Nachiket Arbad, Fernando Rincon, Catalin Teodoriu, Mahmood Amani
Summary: Cementing jobs are performed during well construction, well abandonment, and restoration of well integrity. The primary objective is to replace drilling mud with pure cement in the annulus, as mixing drilling mud with cement can lead to unpumpable mixture. Recent studies focused on understanding the strength development of OBM contaminated cement slurries, developing correlations for early strength development, and enhancing the estimation of weight on cement (WOC) time.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Janusz Kozubal, Tomasz Kania, Ahmad S. Tarawneh, Ahmad Hassanat, Rasaq Lawal
Summary: Soil-cement materials are widely used in civil engineering, but previous studies have identified errors in ultrasonic measurements of the unconfined compressive strength (UCS) of low-strength soil-cements. This study aims to improve the accuracy and efficiency of measurement using a standard ultrasonic pulse velocity (UPV) measuring device equipped with an oscilloscope and implementing a deep learning method.
Article
Chemistry, Multidisciplinary
Ibrahim Haruna Umar, Hang Lin, Awaisu Shafiu Ibrahim
Summary: Soil stabilization is crucial for engineering projects, and waste marble powder has shown potential as an additive due to its low cost and environmental benefits. This study explores the effects of waste marble powder on soil strength and ultrasonic pulse velocity and demonstrates the accuracy of artificial neural networks in predicting these values. The results highlight the improvement in soil properties with the addition of waste marble powder and emphasize the importance of the grade and amount of powder used. Overall, this research contributes to the development of sustainable and cost-effective soil stabilization solutions and is valuable for engineers and researchers in the field.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Geological
K. S. Yin, L. M. Zhang, H. F. Zou, H. Y. Luo, W. J. Lu
Summary: This study evaluates the impact of key construction factors on the strength of cement-stabilized soil in deep cement mixing projects. The results indicate that the volume of injected water and the original soil type are the most dominant factors, and a longer mixing time improves soil strength.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2022)
Article
Construction & Building Technology
M. Karoglou, A. Bakolas
Summary: This study investigates the compressive strength of natural stones using Uniaxial compressive strength tests (UCS) and non-destructive tests (NDT) such as Schmidt Hammer Rebound test (SHR) or Ultrasonic Pulse Velocity transmission (UPV). Regression models, including linear, exponential, and power models, are commonly used to correlate UCS test values with NDT results. However, these models are often limited to specific stone types and datasets. In this work, an expanded dataset with different types of stones and measurements from various researchers is examined, and an optimized linear model is proposed for predicting compressive strength based on NDT results.
MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Characterization & Testing
Navaratnarajah Sathiparan, Pratheeba Jeyananthan
Summary: This study investigates the use of machine learning to predict the compressive strength of Cement stabilised earth blocks (CSEBs) in order to enhance quality control. Different types of soil and cement content were considered, and various machine learning models were proposed. The results show that a combination of cement content, electrical resistivity, and Ultrasonic pulse velocity (UPV) can accurately assess the quality of CSEBs.
NONDESTRUCTIVE TESTING AND EVALUATION
(2023)
Article
Chemistry, Multidisciplinary
Leticia Presa, Jorge L. Costafreda, Domingo Alfonso Martin
Summary: This study aims to investigate the relationship between the compression resistance and velocity of ultrasonic pulses in mortars with pozzolanic content. The results show a correlation between ultrasonic pulse velocity and compressive resistance, which provides a basis for further research with a larger number of samples to confirm its validity at greater curing ages.
APPLIED SCIENCES-BASEL
(2021)
