03322nas a2200409 a 4500 20260818090909.0 220210 2020 th uu m rtt 0| a1eng .b12378963 AIT Thesis no.ST-20-02 Wasuchart Chiemchit Development of preplaced lightweight aggregate concrete Pathum Thani, Thailand : Asian Institute of Technology, 2020 91 leaves : ill. Thesis ; no. ST-20-02 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology Thesis (M. Eng.) - Asian Institute of Technology, 2020 This research study intended to develop the Preplaced Aggregate Concrete (PAC) by using lightweight aggregate. The idea of preplaced aggregate concrete could provide a very big advantage for implementing lightweight aggregate by a very high amount of aggregate percentage to cement paste which would end up reducing a density for concrete. The purpose of this work is to implement the PAC idea to lightweight aggregate and develop a structural lightweight concrete. Since lightweight aggregate gradation is usually way smaller than the normal weight aggregate, the production of Preplaced Lightweight Aggregate is more challenging due to its size and low specific gravity. The flowability of the grout is the important thing which will be checked and control carefully. The supplementary materials were used to improve the fresh properties and hardened properties of the product. The research was developed by using DOE of 2k (Two level of full factorial design) with added center points with 3 factors as k resulted in 15 mixes plus 1 control mix, all the results were analyzed by Minitab17. The highest compressive strength that was developed from this work was 27.65 MPa at 28 days, 3.47 MPa in Flexural strength, 8.98 GPa of Modulus of Elasticity and about 1300 Kg/m3 of the oven-dried density. According to the compressive strength and, the product from this research could be counted as a structural lightweight preplaced aggregate concrete to use as the structural components. Lightweight concrete Aggregates (Building materials) Punchet Thammarak, Chairperson Thanakorn Pheeraphan, Co-Chairperson Pennung Warnitchai, Examination Committee Raktipong Sahamitmongkol, Examination Committee Royal Thai Government Fellowship, Scholarship Donor Asian Institute of Technology. Thesis ; no. ST-20-02 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B15719 .b12378963 mnait m 240419 0 220210 m a m 0 mnarc mnarc 67 40 Barcode : - CREATED : 2022-10-02 RECORD # : i13364583 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30020220004868 CREATED : 2023-10-01 RECORD # : i1342368x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 29460 29460 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.ST-20-02 2026-08-18 09:09:09 2026-08-18 67 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.ST-20-02 30020220004868 2026-08-18 09:09:09 1 2026-08-18 40