Resonant Frequency Ultrasonic P-Waves for Evaluating Uniaxial Compressive Strength of the Stabilized Slag–Cement Sediments

Lindh, Per; Lemenkova, Polina

doi:10.2478/ncr-2021-0012

Cited by 25 publications

(17 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4, respectively. It was found out that Vs increased with the increasing of the cement content which agreed well with [36,37]. However, once Para-rubber was added into the mixture, Vs tended to decrease with an increasing of Para-rubber content instead.…”

Section: Effect Of Cement and Para-rubber Contents On Shear Wave Velo...supporting

confidence: 72%

Properties and Performances of Soil Cement Modified With Concentrated Para-Rubber

Kowsura¹

2023

GEOMATE

View full text Add to dashboard Cite

Due to the slump of the price of Para-rubber, the Department of Highways of Thailand has adopted the rubber to be used in the quality improvement of cement stabilized materials. Hence, this research aims to study the changes of properties of soil cement modified with concentrated Para-rubber. Lateritic soils were mixed with cement, at the ratio of 1, 3 and 5%, and Para-rubber, at the ratio of 1 and 2% of dry soil weight. The shear wave velocity (Vs), unconfined compressive strength (UCS), strain at failure, indirect tensile strength (IDT), resilient modulus (MR), fatigue resistance (FR) and soil permeability (k) were tested after 7 days of curing. The results indicated that UCS increased with the increase of cement ratio but tended to decrease with the increase of Pararubber which were consistent with the results of Vs. For the performance tests, IDT and MR tended to decrease while FR and k tended to increase with the increase of Para-rubber. It was expected that Para-rubber affected the compaction quality and, probably, the creation of a hydration reaction. Conclusively, the addition of cement increased the brittleness of the material resulting in higher strength. On the other hand, the addition of Para-rubber increased the ductility resulting in lower strength but higher deformation and higher fatigue crack resistance.

show abstract

Section: Effect Of Cement and Para-rubber Contents On Shear Wave Velo...supporting

confidence: 72%

Properties and Performances of Soil Cement Modified With Concentrated Para-Rubber

Kowsura¹

2023

GEOMATE

View full text Add to dashboard Cite

show abstract

“…In contrast to the thematic applications of GIS specifically for Bolivia, using scripting techniques was presented as a special opportunity of machine-based cartography. Specifically, the scripting approach provides advantages in Earth studies in geological, geophysical, and geotechnical modelling of soil data, seismic analysis and simulation, and risk mitigation and vulnerability assessment [67][68][69]105,129]. The advantages of scripts can be explained by the increased speed of data processing and the accurate plotting and machine-based workflow routine, which significantly minimises man-made errors and misprints.…”

Section: Discussionmentioning

confidence: 99%

Handling Dataset with Geophysical and Geological Variables on the Bolivian Andes by the GMT Scripts

Lemenkova

2022

Data

Self Cite

View full text Add to dashboard Cite

In this paper, an integrated mapping of the georeferenced data is presented using the QGIS and GMT scripting tool set. The study area encompasses the Bolivian Andes, South America, notable for complex geophysical and geological parameters and high seismicity. A data integration was performed for a detailed analysis of the geophysical and geological setting. The data included the raster and vector datasets captured from the open sources: the IRIS seismic data (2015 to 2021), geophysical data from satellite-derived gravity grids based on CryoSat, topographic GEBCO data, geoid undulation data from EGM-2008, and geological georeferences’ vector data from the USGS. The techniques of data processing included quantitative and qualitative evaluation of the seismicity and geophysical setting in Bolivia. The result includes a series of thematic maps on the Bolivian Andes. Based on the data analysis, the western region was identified as the most seismically endangered area in Bolivia with a high risk of earthquake hazards in Cordillera Occidental, followed by Altiplano and Cordillera Real. The earthquake magnitude here ranges from 1.8 to 7.6. The data analysis shows a tight correlation between the gravity, geophysics, and topography in the Bolivian Andes. The cartographic scripts used for processing data in GMT are available in the author’s public GitHub repository in open-access with the provided link. The utility of scripting cartographic techniques for geophysical and topographic data processing combined with GIS spatial evaluation of the geological data supported automated mapping, which has applicability for risk assessment and geological hazard mapping of the Bolivian Andes, South America.

show abstract

“…The seismic velocity of P-waves in the specimens has been measured with the resonant frequency technique, free-free resonate column test using existing methods [17,19]. All elastic bodies have a set of resonant frequencies (fr) that are directly related to the body's boundary conditions, elastic constants, geometry, and mass.…”

Section: Seismic Measurementsmentioning

confidence: 99%

Effects of GGBS and Fly Ash in Binders on Soil Stabilization for Road Construction

Lindh

Lemenkova

2022

Romanian Journal of Transport Infrastructure

Self Cite

View full text Add to dashboard Cite

In this paper we propose a new technique of soil stabilization for road construction based on using new alternative binders. The project aims to evaluate the effects of alternative additive materials in soil stabilization contexts for road construction. The alternative binders (slag, energy ash and bio ash as new alternative road construction material) have been used to complement the traditional binders (cement and lime). The project used five binders and evaluated their effects on soil strength. The proposed method comprises advantages of using the alternative binders which are the residual products contributing to a lower environmental impact. The results have shown that only slag has significant effects on the strength of the stabilized soil, while bio ash and energy ash make a marginal contribution to the increase of strength. This is caused by the twofold reasons. First, the effects of the amount of ashes that should reach a certain threshold with respect to the total amount of binder that must be exceeded to have the effect of the soil mixture. Second, the bio fly ash was stored and it was not completely fresh which may have contributed to the carbonation during the storage period and results in a lower hardening ability. Based on the results of the study we recommend the use of bio fly ash as a supply material andfor its amount to be adjusted so the storage period is not too long. This study verified the effects of slag, cement and lime on stabilization of soil for road construction.

show abstract

Resonant Frequency Ultrasonic P-Waves for Evaluating Uniaxial Compressive Strength of the Stabilized Slag–Cement Sediments

Cited by 25 publications

References 79 publications

Properties and Performances of Soil Cement Modified With Concentrated Para-Rubber

Properties and Performances of Soil Cement Modified With Concentrated Para-Rubber

Handling Dataset with Geophysical and Geological Variables on the Bolivian Andes by the GMT Scripts

Effects of GGBS and Fly Ash in Binders on Soil Stabilization for Road Construction

Contact Info

Product

Resources

About