Improvement of sand with bottom ash and cement as back fill materials and pavement

  • วุฒิกรณ์ โสพรรณรัตน์ ภาควิชาวิศวกรรมโยธา มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ
Keywords: Bottom ash, Unconfined compressive strength, Resilient modulus, Poisson' Ratio, SEM, XRD

Abstract

Bottom ash is a waste generated from coal burning to used as power for electricity generation causing problems of waste area disposal and pollution to the environment. This research is for realizing the benefits by proposing to improve the quality of sandy soils by using bottom ash and cement as a backfill materials and pavement materials. Experiments consisted of unconfined compressive strength (UCS), California bearing ratio (CBR), resilient modulus (Mr), and non-destructive testing using vibration waves free-free resonance test (FRR) can used to assess the strength of sandy soil, improve the quality and can used to determine the properties of seismic modulus and Poisson's ratio. The test results show that the P-wave and S-wave velocity, including the seismic modulus, are consistent with the compressive strength test results. Results show that 30% bottom ash content replacement sandy soil provided maximum strength, resilient modulus and California bearing ratio. Sandy soil, improved by bottom ash and cement, was classified as “Soil cement base” according to standard, DH-S. 204/2556, Department of highway, Thailand

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Published
2020-07-09
How to Cite
[1]
โสพรรณรัตน์ว. 2020. Improvement of sand with bottom ash and cement as back fill materials and pavement. The 25th National Convention on Civil Engineering. 25, (Jul. 2020), GTE30.