Effects of ground bottom ash on compressive strength and modulus of elasticity of concrete

Name: R. Loun

Organization : King Mongkut's University Technology Thonburi. Faculty of Engineering

Name: P. Khongperngoson

Organization : King Mongkut's University Technology Thonburi. Faculty of Engineering

Name: W. Tangchirapat

Organization : King Mongkut's University Technology Thonburi. Faculty of Engineering

Name: C. Jaturapitakkul

Organization : King Mongkut's University Technology Thonburi. Faculty of Engineering

LCSH: Concrete -- Compression testing

LCSH: Concrete -- Reinforcement

Abstract: Annually, large volume of bottom ash is being produced in Thailand. This huge disposal of bottom ash is causing of an environment problems for the neighboring zone. Thus, this study was aimed to assess the possibility of its use as a cement replacement in concrete. The original bottom ash from the source of Mae Moh Power Plant, Lampang Province, Thailand contained large particle sizes which performed as an inactive pozzolanic reaction. Therefore, the bottom ash was ground until the particles retained on a sieve No. 325 about 3% to enhance its pozzolanic properties. Four replacement rates i.e. 15, 25, 35, and 50% of ground bottom ash by weight of binder were used as a partial replacement of cement in concrete mixtures. Compressive strength was examined at the rates of 7, 28, 60, and 90 days. and moduli of elasticity of concretes was evaluated at the ages of 28 and 90 days. The results indicated that the ground bottom ash which was replaced cement at all rates in concrete developed compressive strengths slower than the control concrete at 7 and 28 days. However, the compressive strength at 90 days of ground bottom ash concrete with 15% replacement of cement was almost comparable to control concrete while the modulus of elasticity seemed to increase along with the compressive strength. As a consequence, this can be clearly stated that the ground bottom ash has a high potential to be used as a pozzolanic material

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2562

Modified: 2022-08-18

Issued: 2022-05-12

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BibliograpyCitation : ใน มหาวิทยาลัยสารคาม คณะวิศวกรรมศาสตร์ สาขาวิศวกรรมโยธา. การประชุมวิชาการวิศวกรรมโยธาแห่งชาติ ครั้งที่ 24 (NCCE 24) (MAT033) อุดรธานี : มหาวิทยาลัยสารคาม

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