02264nas a2200265 a 450000500170000000800410001703500150005810000320007324500950010526000670020030000220026749000270028950001330031650200590044952010540050865000360156265000330159870000370163170000420166870000460171070000530175671000570180981000590186685600730192520260817162328.0240202s2023    th u  m  tt   000 a eng d  a.b124189850 aThanapol Rujjiradthitikan  10aAnalysis of different casting techniques on properties of preplaced aggregate concrete      aPathum Thani, Thailand :bAsian Institute of Technology,c2023  a38 leaves :bill.1 aThesis ;vno. ST-23-12  aA thesis submitted in partial fulfillment of the requirements for the  degree of Master of Engineering in Structural Engineering  aThesis (M. Eng.) - Asian Institute of Technology, 2023  aFrom the literature review, increasing the amount of sand to binder can improve the  flexural strength, and this thesis concerns the improvement of the flexural strength of  preplaced aggregate concrete by increasing the sand content. However, an increase in  the amount of sand per binder in the mix proportion results in a bad of the flow ability  of the grout. Therefore, the introduction of techniques in preplaced aggregate concrete  mixing to help increase the amount of sand in the mix proposal is possible.  In this study, beginning with the prescreening test that are superplasticizer comparison  between brand A and B, and the maximum od sand content that can added in each  techniques. After the prescreen test, superplasticizer and maximum amount of sand to  binder were selected. Then, the mix proportion designed.  Finally, after experiment result getting, there lead to the analysis part on focusing the  effect of the sand content in the mix proportion especially the flexural strength which  is one of the objectives of this thesis  0aAggregates (Building materials) 0aConcretexAdditivesxTesting0 aPennung Warnitchai,eChairperson0 aThanakorn Pheeraphan,eCo-chairperson0 aPunchet Thammarak,eExamination Committee0 aRaktipong Sahamitmongkol,eExamination Committee2 aRoyal Thai Government Fellowship,eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. ST-23-12403Full-Textuhttp://203.159.5.9/ait-thesis/Viewer/viewer.php?id=B20351