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Author: search.filters.author.Sae-Ueng, Songklod

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    Utilization of Waste Material for Stabilization of Lateritic Soil
    (2024-01-01)
    Chaiyaput, Salisa
    ;
    Ayawanna, Jiratchaya
    ;
    Manandhar, Suman
    ;
    Sae-Ueng, Songklod
    The waste materials from the manufacturing process were employed for the purpose of enhancing the strength of lateritic soil grade E, which exhibited the least suitable mechanical properties. The present study focused on the investigation of waste materials from the steel manufacturing process, namely electric arc furnace (EAF) slag and ladle furnace (LF) slag, as well as waste material from asphalt concrete plants, specifically asphalt waste dust (AWD). These waste materials were examined in relation to their potential utilization in combination with lateritic soil. The mixing ratio employed in this investigation was 10% by weight (wt%). A mixture of 5 wt% ordinary Portland cement was mixed with 90 wt% lateritic soil and 10 wt% asphalt waste dust to enhance the efficiency of lateritic soil stabilization. The efficiency of waste materials was evaluated by the California bearing ratio (CBR) test. The integration of EAF slag and LF slag, byproducts of the steel manufacturing process, significantly improved the CBR more than 5 times and 7 times, respectively, for EAF and LF mixes compared to natural lateritic soil. Furthermore, the CBR of lateritic soil blended with asphalt waste dust and Portland cement exhibited approximately 20 times higher than that of natural lateritic soil and cement-stabilized lateritic soil.
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    The Karen villagers' knowledge development in road construction: A case study of Panoki -Kopadoh (PNK) route
    (2018-08-14)
    Sirikaew, Uba
    ;
    Sae-Ueng, Songklod
    ;
    Khwanpruk, Somkiat
    ;
    Sriworasa, Thanom
    The Karen, of Panoki village agreed to upgrade the unpaved PNK route to a bamboo reinforced concrete road which used money from the donation. At the beginning of the road construction project, 2010, there were many problems concerned with construction technique and accidents. Civil Engineering Department, Engineering Faculty, King Mongkut's Institute of Technology Ladkrabang (KMITL) was invited to be a road construction consultant of Panoki-Kopadoh (PNK) route during 2012 to 2017. As the villages of Panoki in Tak province and Kopadoh in Chiang Mai province are in Thailand's northern remote mountainous areas connected by a 16.5 km unpaved narrow track of Panoki-Kopadoh (PNK) route. In fact, the majority of volunteer villagers understand only the Karen language, lack the basic construction skills, and show no regard for personal safety and hygiene. The consulting team thus provided a training program prior to construction and assisted with technical advice since the onset of the project. As an achievement of the project depends on people participation, this research is to examine the pre-and post-training local workers' knowledge development and attitudes toward the academic services provided by KMITL through direct observations, a Likert-scale-based questionnaire, and in-depth interviews. The findings reveal that the participating villagers have learned to construct a bamboo reinforced concrete road and are intent on applying the knowledge to similar projects in the future. They exhibit the higher level of knowledge development following the training and also hold a positive attitude toward KMITL's academic services.