Stability of Railway Embankment in Saturated and Unsaturated Conditions

Roshan, Mohammad Jawed; Rashid, Ahmad Bukhairi Md; Wahab, Norhaliza Abdul; Hezmi, Muhammad Azril; Jusoh, Siti Norafida; Azmi, Mastura

doi:10.1088/1757-899x/1153/1/012007

Cited by 14 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite their widespread availability in large quantities, laterites have emerged as one of the most dependable materials utilized in civil engineering projects such as fills or paving materials. However, the laterite soil used for infrastructures such as railways and roads construction material may not be stable, particularly under severe rainfall conditions [15]. Subgrade is part of the road system in which is considered as infrastructure IOP Publishing doi:10.1088/1755-1315/1238/1/012017 2 in civil engineering.…”

Section: Introductionmentioning

confidence: 99%

A Study on Crushed Coconut Shells as Stabiliser to Soil

Kamarudin,

Jaya,

Roslee

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Road construction over soft subgrade soil is a major issue affecting cost and scheduling of highway projects. Many techniques have been conducted to strengthen the highway soil subgrade. One of them are using additives such as coconut shells, rice husk ash, stone dust, and fly ash. to strengthen the soil. The strength of the subgrade is commonly expressed as California Bearing Ratio (CBR). In this study, the crushed coconut shells (CCS) of 65 mm to 10 mm ranges of size was mix with the laterite soil. A series of unsoaked CBR test were conducted with an addition of 1, 2, 3, 4, 5, 6, 7 and 8% of CCS to determine the strength of the stabilized laterite soil. The laterite soil is classified as sandy SILT of high plasticity (MH) according to British Standard Classification System (BSCS). The results show that the CBR values of the stabilized soil increase with an increasing percentage the CCS. The stabilized soil with 4% CCS is the highest CBR value, 27.5%. The CBR% then decreasing as further additional of CCS %. The stabilised soil with an 8% CCS content had the lowest CBR value at 5.25%, which is lower than the unstabilised laterite soil’s CBR value. It is concluded that the additions of CCS have greatly improved the soil strength with the increment increase of CBR value. Hence CCS has a good potential for upgrading the CBR value of subgrade soil.

show abstract

Section: Introductionmentioning

confidence: 99%

A Study on Crushed Coconut Shells as Stabiliser to Soil

Kamarudin,

Jaya,

Roslee

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…Since the transportation infrastructure bed is subjected to wetting-drying or freezing-thawing Roshan et cycles, stabilising lateritic soil is of great importance and needs to be selected wisely. For instance, it was found that the stability of railway embankments constructed with lateritic soil decreases under rainfall infiltration [4]. Furthermore, the failure of a road built on lateritic soil because of heavy rainfall has been reported in many countries [2,5].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of cement stabilised residual soil on macro- and micro-scale for road construction

et al. 2022

View full text Add to dashboard Cite

Lateritic soil is a kind of residual soil widespread in tropical countries. This soil usually possesses acceptable engineering properties to be laid under the construction projects. However, it needs treatment for transportation infrastructure such as railway and road subgrade and embankment, particularly when it is in fine-grained form. Thus, cement, one of the very common stabiliser agents in soil stabilisation, was selected to study its influence on lateritic soil at macro- and micro-levels. In order to achieve this goal, UCS, durability, FESEM and EDX tests were conducted. The results obtained indicate that the UCS increase occurs with an increase in cement content and curing time. It was also found that the shear modulus increases with cement content and curing time. The durability test results disclosed that 3% cement is not enough for soil stabilisation when used for projects in the areas subjected to cyclic wetting-drying cycles. The durability test results revealed that the UCS decreased for specimens treated with 6% cement, while on the other hand, the UCS increased for samples treated with 9% and 12% cement. The FESEM results revealed that the soil micro-structure changed with the addition of cement and curing time. The EDX results presented the chemical elements change upon adding cement and increasing curing time. Overall, it was found that cement-stabilised residual soil can be used for road construction. However, the cement percentage needed to stabilise residual soil differs depending on the standards.

show abstract

“…The study results by [17] disclosed that the formation of lateritic soil is affected by parent rocks' chemical, mineralogical composition, and physical properties. The lateritic soils have been studied for their potential use in liners [18][19][20], highway construction [21], railway embankment [22] and building material [9]. Lateritic soil is widely used for road and railway construction; however, some road and railway deteriorations constructed over these kinds of soils are reported.…”

Section: Introductionmentioning

confidence: 99%

Characterization of lateritic soil based on literature and lab testing

Roshan

Hezmi

Rashid

et al. 2022

Preprint

View full text Add to dashboard Cite

Lateritic soil resulting from weathering, particularly the chemical weathering process of rocks, is found widely in tropical and subtropical countries such as Malaysia, Thailand, Singapore, and Brazil. The characteristics of this residual soil depend on many factors, including weathering degree, chemical compositions, and laterization degree, indicating their varying properties from one place to another. Thus, it is essential to explore their characteristics before using them as a construction material for a particular structure. In this paper, a lateritic soil sampled from Universiti Teknologi Malaysia has been explored in terms of grain size distribution (GSD), Atterberg limits, specific gravity, compaction, unconfined compressive strength (UCS), unconsolidated undrained (UU) test, FESEM, and EDX. The obtained results indicated that the soil is classified as plastic silt (MH) and A-7-5 according to USCS and AASHTO methods, respectively. The optimum moisture content (OMC) and maximum dry density (MDD) were obtained 28 % and 1.39 g/cm3, respectively, based on the standard compaction method. The unconfined compressive strength (UCS) is 200.75 kPa, whereas, in the unconsolidated undrained (UU) test, the deviator stress is equal to 449.4 kPa, 529.3 kPa, and 674 kPa for 50, 100, and 200 kPa, respectively. The total friction angle and undrained cohesion are 25.69° and 115.82 kPa, respectively. According to the FESEM results, the matrix microstructure was detected for the soil. The O, Al, Si, and Fe were detected as primary chemical elements in the soil. The results of this study can help the practitioners to classify the laterite soil and decide based on its characteristics.

show abstract

Stability of Railway Embankment in Saturated and Unsaturated Conditions

Cited by 14 publications

References 18 publications

A Study on Crushed Coconut Shells as Stabiliser to Soil

A Study on Crushed Coconut Shells as Stabiliser to Soil

Evaluation of cement stabilised residual soil on macro- and micro-scale for road construction

Characterization of lateritic soil based on literature and lab testing

Contact Info

Product

Resources

About