Chaiyaput, Salisa

Preferred name

Chaiyaput, Salisa

Alternative Name

CHAIYAPUT, SALISA

Chaiyaput, S.

Chaiyaput, Salisa Fern

Main Affiliation

School of Engineering

salisa.ch@kmitl.ac.th

Now showing 1 - 10 of 32

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Inspection of bridge failure during construction: A case study of a bridge over a drainage canal
(2025-04-01)
Suksawat, Taweephong
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Ayawanna, Jiratchaya
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Nghia-Nguyen, Trong
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Meetorranee, Thawidej
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Promthong, Boonchom
This paper presents a case study of a bridge failure during construction in an infrastructure development project in Nakhon Si Thammarat, Thailand. This highlights the critical role of thorough inspection and early detection of structural failures. The failure, related to foundation-related issues, shows how even minor errors in the construction sequence can lead to significant structural problems. Key steps for evaluating foundation failures are assessing the structure's movement and utilizing an inclinometer to determine ongoing failure. Resistivity surveys, in conjunction with screw driving sounding tests (SDS), were performed to assess soil properties, while the finite element method (FEM) was applied to validate the observed failure behavior. The results show that an inclinometer effectively monitored these structures’ movement. The resistivity surveys proved useful in identifying soil layers in the wide area. Meanwhile, the SDS tests were able to determine the soil's undrained shear strength. FEM simulations provided valuable insights into the behavior of underground structures. Consequently, comprehensive inspections are essential to mitigate foundation failure risks and ensure critical structures’ safety and longevity.
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Utilization of ladle furnace slag from a steelwork for stabilization of soil cement
(2022-10-25)
Ayawanna, Jiratchaya
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Kingnoi, Namthip
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Sukchaisit, Ochakkraphat
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Chaiyaput, Salisa
Ladle furnace (LF) slag, waste from the steel-making process, was incorporated to improve the compressive strength of soil cement. LF slag was mixed to replace the cement in the soil-cement samples with wt% ratio 20:0, 15:5, and 10:10 of cement and slag, respectively. LF slag in the range of 5, 10, and 20 wt% was also separately added to the 20-wt% cement-treated soil samples. The soil-cement mixed LF slag samples were incubated in a plastic wrapping for 7, 14, and 28 days. The strength of soil cement was highly developed to be higher than the standard acceptable value (0.6 MPa) after incorporating slag into soil cement. The mixing of LF slag resulted in more hydration products for bonding soil particles, and hence improved the strength of soil cement. With the LF slag mixing either a replacement or additive materials in soil cement, the LF slag to cement ratio is considered to be less than 1, while the cement content should be more than 10 wt%. This is to promote a predominant effect of cement hydration by preventing the partially absorbed water on slag particles and keeping sufficient water content for the cement hydration in soil cement.
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Evaluation of Interface Shear Strength Coefficient of Alternative Geogrid Made from Para Rubber Sheet
(2023-04-01)
Liangsunthonsit, Anubud
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Jaroonrat, Pakkapon
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Ayawanna, Jiratchaya
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Naebpetch, Weerawut
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Chaiyaput, Salisa
In this work, elastic natural rubber compound sheet (RCS) and ribbed smoked sheet grade 3 (RSS) were studied as alternative replacements for polymer geogrid for soil reinforcement. In order to investigate the reinforcing effectiveness in three distinct environments using the interface shear strength coefficient (R<inf>in</inf>) by the large-scale direct shear test, the RSS and RCS geogrids were installed independently in sand, lateritic soil, and clay. Using either an RSS geogrid or RCS geogrid, the average R<inf>in</inf> is progressively smaller in reinforced sand, lateritic soil, and clay, respectively. Higher tensile strength of reinforced materials using the RCS geogrid than those using the RSS geogrid is encouraged by the better elastic characteristics of the RCS geogrid. Thus, utilizing the RCS geogrid-reinforced materials can better increase the shear strength of coarse-grained soil such as sand and gravel.
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Environmental Effects on the Interface Shear Strength of Geomembrane made from Rubber Compound Sheet
(2025-01-01)
Chaiyaput, Salisa
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Liangsunthonsit, Anubud
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Mase, Lindung Zalbuin
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Ayawanna, Jiratchaya
The concept of utilizing a rubber compound sheet (RCS) made from natural materials as a substitute for polymer plastics was investigated. In this study, the functions of RCS as a geomembrane were investigated. Testing on thickness, mass per unit area, tensile strength, and interface shear strength behavior under various environmental conditions or various curing conditions, including air, tap water, and wastewater (acid water (pH 6) and base water (pH 9)) for 90- and 180-curing days, were conducted. It was found that the properties of the RCS geomembrane, such as thickness, mass per unit area, tensile strength, and interface shear strength, were not affected by various curing conditions. The results confirmed that the RCS geomembrane can function as a geomembrane.
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The thickness of the soft soil layer and canal-side road failure: A case study in Phra Nakhon Si Ayutthaya province, Thailand
(2023-12-10)
Chaiyaput, Salisa
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Suksawat, Taweephong
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Mase, Lindung Zalbuin
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Sugiyama, Motohiro
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Ayawanna, Jiratchaya
Canal-side roads frequently collapse due to an unexpectedly greater soft-clay thickness with a rapid drawdown situation. This causes annually increased repair and reconstruction costs. This paper aims to explore the effect of soft-clay thickness on the failure in the canal-side road in the case study of Phra Nakhon Si Ayutthaya rural road no. 1043 (AY. 1043). Before the actual construction, a field vane shear test was performed to determine the undrained shear strength and identify the thickness of the soft clay at the AY. 1043 area. After establishing the usability of AY. 1043, the resistivity survey method was used to evaluate the thickness of the soft clay layer at the failure zone. The screw driving sounding test was used to evaluate the undrained shear strength for the road structure with a medium-stiff clay layer at the failure zone for applying to the numerical model. This model was simulated to confirm the effect of soft-clay thickness on the failure of the canal-side road. The monitoring and testing results showed the tendency of rapid drawdown failure when the canal-side road was located on > 9 m thick of soft clay with a sensitivity > 4.5. The result indicates that the combination of resistivity survey and field vane shear test can be successfully used to inspect the soft-clay thickness and sensitivity before construction. The preliminary design for preventing failure or improving the stability of the canal-side road should be considered before construction under the critical thickness and sensitivity values of the soft clay.
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Electrical resistivity survey for evaluating the undrained shear strength of soft Bangkok clay at some of the canal-side road investigation sites
(2022-01-01)
Chaiyaput, Salisa
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Sutti, Nut
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Suksawat, Taweephong
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Ayawanna, Jiratchaya
A resistivity-undrained shear strength equation was proposed in this work to investigate the relationship between the undrained shear strength and electrical resistivity of soft Bangkok clay. The field vane shear and screw driving sounding tests were used to evaluate the undrained shear strength of the soft Bangkok clay from 10 field investigations of the canal-side roads. Meanwhile, the electrical resistivity was collected by the low-cost nondestructive resistivity survey method. The relationship between the measured resistivity corresponding to the undrained shear strength was expressed as a linear equation of S<inf>u</inf> = 7.061ρ with a high statistical correlation (96.20%) between the undrained shear strength and resistivity. The validation between the predicted undrained shear strength from the equation and the measured undrained shear strength from the field sites confirmed the statistically significant relation of data and the reliability of the proposed equation. By using this equation, it successfully predicted the undrained shear strength of the soft Bangkok clay at a depth of 4.00–10.00 m below the ground surface of canal-side roads (zones C, D, and E in the zonation map). The proposed new equation from the resistivity survey in this work, therefore, serves as an alternative tool to fast estimate the shear strength of soft soil in the large area for the preliminary evaluation of road construction.
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Application of a cement–clay–air foam mixture as a lightweight embankment material for construction on soft clay
(2023-07-01)
Chaiyaput, Salisa
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Ayawanna, Jiratchaya
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Jongpradist, Pornkasem
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Poorahong, Hatairat
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Sukkarak, Raksiri
Lightweight air foam materials can be used in pavement structures, for example, as embankments and subbase and base layers. Soft clay can be mixed with cement and air foam to generate a lightweight material. However, most previous studies have presented only laboratory test results for these materials and have not shown real-world applicability. The current study aims to demonstrate the application of a cement–clay–air foam mixture as a lightweight embankment material to reduce the settlement of soft Bangkok clay foundations induced by embankment weight. An experimental investigation to determine unconfined compressive strength (q<inf>u</inf>) was initially conducted in the laboratory to establish the ideal quantities of soft clay, air foam, and ordinary Portland cement required for embankment construction using the clay mixture. A full-scale lightweight embankment of area 14 m × 14 m and height 2.5 m was constructed on an 11 m thick soft clay layer to observe embankment settlement behavior on the soft clay foundation. The q<inf>u</inf> values of the lightweight materials obtained from the site were 1.3–1.8 times higher than those in laboratory tests. The mixtures with wet field unit weights of 0.6, 0.8, and 1.0 kN/m<sup>3</sup> exhibited q<inf>u</inf> values of 430–620 and 770–1000 kPa, respectively, higher than the standard requirements (> 100 kPa for 7 curing days and > 200 kPa for 28 curing days). Based on monitored data, the lightweight embankment reduced settlement by as much as 80 % compared with a traditional embankment. Therefore, lightweight clay materials are recommended for use in the construction of road embankments on soft clay.
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The use of asphalt waste dust for stabilization of sustainable pavement recycling
(2024-10-04)
Ayawanna, Jiratchaya
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Suksawat, Taweephong
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Sertsoongnern, Pimchanok
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Chaiyaput, Salisa
The asphalt waste dust as a sustainable material for stabilizing pavement recycling, which is cold in-place recycling (consists of reclaimed asphalt pavement, crushed rock aggregate base, and ordinary Portland cement), was presented in this study. To understand the effect of asphalt waste dust on stabilizing pavement recycling, 10–30 wt% asphalt waste dust was added and compared with the behavior of pure old-asphalt pavement material and old-asphalt pavement material mixed with 3.5 % OPC. The compaction test, unconfined compressive strength test (UCS), indirect tensile strength tests (IDT), and scanning electron microscope analysis were conducted under various mixing conditions. The addition of asphalt waste dust up to 20 wt% achieved desirable results of UCS and IDT involved with microstructural development, which were beyond the standard requirements of the base course from the Department of Rural Roads and the Department of Highway. A maximum of 20 wt% asphalt waste dust can be utilized for practical use with pavement recycling in the base course.
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Sustainable paving blocks by the combination of plastic waste and sand
(2026-06-01)
Srisuwan, Anuwat
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Ayawanna, Jiratchaya
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Laorodphan, Nattapol
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Chaiyaput, Salisa
Drinking water from plastic bottles offers convenience and perceived safety compared to tap water, resulting in widespread consumption and substantial plastic waste accumulation. An average individual consumes around 2.0 L of bottled water daily, significantly contributing to environmental plastic pollution. Addressing this issue, this research highlights and investigates an innovative solution by evaluating the potential of recycling plastic waste into paving blocks. Specifically, the study is based on the assumption that plastic materials commonly found in bottled water packaging, which are Polyethylene Terephthalate (PET) from bottles, Polypropylene (PP) from labels, and High-Density Polyethylene (HDPE) from bottle caps, can act as an effective binder to combine with sand without the use of cement to produce the paving blocks. The investigation assesses critical physical and mechanical properties of the developed paving blocks, including apparent density, porosity, water absorption, and compressive strength, across varying proportions of plastic waste ranging from 30% to 70% by weight. The key results indicate that PET, PP, and HDPE waste can be effectively used to produce paving blocks with compressive strengths ranging from 14.57 to 22.03 MPa, with water absorption below 15%. The study identifies an optimal plastic content between 50% and 60% by weight, yielding paving blocks with satisfactory strength and durability. This research underscores a sustainable and practical approach to mitigating plastic waste, contributing valuable insights toward circular economic initiatives and environmental sustainability.
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Utilization of asphalt waste Dust and fly ash for sustainable mortar
(2025-01-23)
Ayawanna, Jiratchaya
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Kingnoi, Namthip
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Sertsoongnern, Pimchanok
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Chaiyaput, Salisa
This study presents a utilization of asphalt waste dust (AD) as a filler material to replace sand in a mortar. Moreover, fly ash (FA) is utilized as an additive of pozzolanic material. The compressive strength and microstructures were investigated to propose the suitable ratio of AD and FA for sustainable mortar. All samples were fixed with a mixing ratio of ordinary Portland cement (CM): sand (Si) at 1: 2.75. The Si was replaced by AD content at 0, 50, 60, 70, 80, 90, and 100% by weight (%wt) of Si, respectively. Furthermore, the FA was added to the suitable mixing conditions of CM, AD, and Si, which is called the suitable mortar containing AD, at 0, 10, 20, 30, and 40 %wt. The results from the compressive strength test were evaluated and compared under the different curing times for 3, 7, and 28 days in saturated limewater. The microstructures of testing samples were analyzed using different characterization techniques including X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (SEM-EDS). From the results, the mortar containing AD showed higher compressive strength than those without AD. After the addition of FA and AD, the compressive strength was more increased rather than using AD without FA. Sand can be replaced with AD as filler aggregates to reduce voids in the mortar. Additionally, FA can be used as a pozzolanic additive in mortars. Therefore, those two waste materials (AD and FA) are alternative materials suitable for use in the development of compressive strength in mortar.

Chaiyaput, Salisa

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