Durability Assessment of Clay-Bearing Soft Rocks By Using New Decay Index

Heidari, Mojtaba; Momeni, Aliakbar; Mohebbi, Yazdan

doi:10.3311/ppci.11284

Cited by 7 publications

(10 citation statements)

References 19 publications

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“…Natural water content in this research has a high value of R 2 that significantly affect the disintegration. According to [9], the percent of water absorption is the most critical parameter controlling mudrocks' durability. However, the properties that may significantly affect the disintegration of mudrock are not always the parameters that will significantly affect the disintegration.…”

Section: Correlation Of Physical-mineralogical Properties To the Dura...mentioning

confidence: 99%

“…According to [8], the slake durability test is unsuitable for concluding the long durability period. However, according to [9], it conducted the slake-durability test with modification and proposed a new decay index that considers the duration time of the test and disintegrated fragment size. The slakedurability test is overestimated to the force and stress that work on samples, whereas the weathering condition in the field is more complex than in a laboratory.…”

Section: Introductionmentioning

confidence: 99%

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Fragmentation Evaluation of Some Selected Mudrock Indiced by Physical and Mineralogical Properties

Misbahudin,

Perdana,

Fatimah

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Not many mudrock in Indonesia have been evaluated for slaking characteristics. Mudrock disintegrates rapidly when interacting with the atmosphere and hydrosphere. This research investigates the fragmentation of slaked claystone from the Kerek Formation. These formations are known for causing road, slope, and land-strengthening engineering problems along Jalan Semarang-Bawen, Middle Java, Indonesia. In this research, the method includes quantitative analysis of rock slaking level, which collides with the physical and mineralogical properties of the rocks. The slaking test with natural exposure for four cycles was carried out on as many as five samples. It is found the durability parameter value for all samples generally shows a slight difference. The durability index and Fragment Size Distribution Ratio in the 4-month cycle may be considered to evaluate the degree of fragmentation of material mudrock. RGL.0708.10 have an average DIR of 11.81%, and RGI.0908.1 is 2.18%. The value of FSDRatio for RGI.0908.2, RGL.0908.1, RGI.0908.1, and RGI.0708.3 is 1.00, whereas RGI.0708.10 is 0.9997. The indices in this research can be projected and considered to be used in another formation sample with engineering problems. The mineralogical composition of smectite minerals does not show a significant relationship to affect the fragmentation of mudrock with R2 .0.268 in month-4 for the DIR and 0.1322 for the FSDRatio . On the microscopic texture of the sample, there is the presence of calcite minerals, and a modest relationship exists between calcite content and its effect on the fragmentation of mudrock with R2 for DR and FSDRatio , respectively 0.6797 and 0.4732. In addition, physical properties such as natural water content highly influence mudrock’s durability with R2 for DIR and FSDRatio , respectively 0.8321 and 0.9023.

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Section: Correlation Of Physical-mineralogical Properties To the Dura...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fragmentation Evaluation of Some Selected Mudrock Indiced by Physical and Mineralogical Properties

Misbahudin,

Perdana,

Fatimah

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…For example, Steward and Cripps [20] found that the residual angle of shearing resistance of mudstone of Carboniferous age was reduced by between 5 and 10% by the presence of sodium ions in the pore water and that the value increased by a similar amount when potassium was present, compared with the value for distilled water. Portuguese mudrock data from (a) Jeremias [11]; North American mudrock data from (b) Dick et al [21], (c) Shakoor and Gautam [15], (d) Dick and Shakoor [14]; Iranian mudrock data from (e) Heidari et al [22].…”

Section: Particle Size and Atterberg Limitsmentioning

confidence: 99%

“…Problems arise with cutting the cubes in weak and low-durability materials. Portuguese mudrock data from (a) Jeremias [11], UK mudrock data from (b) Bell [32], (c) Czerewko and Cripps [33], and (d) Carter and Sneddon [30]; North American mudrock data from (e) Sarman et al [34]; Iranian mudrock data from (f) Heidari et al [22]; * single value.…”

Section: Swelling Strainmentioning

confidence: 99%

“…The authors demonstrate that the predicted values for a set of mudrock samples are very close to those achieved from standard slake durability testing. Portuguese mudrock data from (a) Jeremias [11]; UK mudrock data from (b) Bell [32]; North American mudrock data from (c) Dick and Shakoor [14], (d) Shakoor and Rodgers [42], (e) Sarman et al [34], (f) Erguler and Shakoor [40] and (g) Shakoor and Gautam [15]; (h) Iranian mudrock data from Heidari et al [22].…”

Section: Slake Durability Testmentioning

confidence: 99%

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Laboratory Testing and Classification of Mudrocks: A Review

Jeremias

Cripps

2023

Geotechnics

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Mudrocks are fine-grained clay-rich rocks that comprise different lithotypes forming more than 60% of all sedimentary rocks, and thus, they occur frequently in engineering projects either as natural ground or as made ground. These rocks may display a range of engineering behaviours controlled mostly by their composition and structural features. Due to rapid breakdown and susceptibility to volume changes, they may cause problems both during and after construction. Research into the susceptibility of mudrocks to breakdown aims to predict problematic behaviour and provide guidance for avoiding or mitigating these effects. Low-durability materials that disintegrate during sampling and testing can be especially difficult to assess. The paper reviews laboratory techniques for mudrock characterization as well as describes geological and engineering geological classification schemes generally used to describe and classify these materials. The value of some of the tests and determinations in the evaluation of a series of mudrock data taken from the literature is presented.

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