Use of Ground Recycled Aggregate as an Admixture with Fly Ash in Self-Compacting Concrete
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Abstract
This research aimed to study the properties of self-compacting concrete (SCC) using ground recycled aggregate as an admixture combined with fly ash. For the control concrete, Portland cement type I was used as a binder and fly ash was used as an admixture at a ratio of 50:50 by weight. In this study, ground recycled aggregate was used to replace fly ash at the ratios of 0%, 25%, 50%, 75%, and 100% by weight. The water to binder ratio of all the mixes was 0.38. The naphthalene superplasticizer was used to increase workability. The properties of SCC, including workability, slump loss, compressive strength, splitting tensile and ultrasonic pulse velocity were tested. The results revealed that the SCC had increased viscosity, accelerated slump loss and decreased mechanical properties depending on the ratio of ground recycled aggregate. However, the SCC with 25% of ground recycled aggregate had good workability and compressive strength at 28 days more than 75% of the control concrete.
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บทความที่ได้รับการตีพิมพ์เป็นลิขสิทธิ์ของ วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยอุบลราชธานี
ข้อความที่ปรากฏในบทความแต่ละเรื่องในวารสารวิชาการเล่มนี้เป็นความคิดเห็นส่วนตัวของผู้เขียนแต่ละท่านไม่เกี่ยวข้องกับมหาวิทยาลัยอุบลราชธานี และคณาจารย์ท่านอื่นๆในมหาวิทยาลัยฯ แต่อย่างใด ความรับผิดชอบองค์ประกอบทั้งหมดของบทความแต่ละเรื่องเป็นของผู้เขียนแต่ละท่าน หากมีความผิดพลาดใดๆ ผู้เขียนแต่ละท่านจะรับผิดชอบบทความของตนเองแต่ผู้เดียว
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