03446nas a2200289 a 450000500170000000800410001703500150005810000210007324501360009426000670023030000420029749000270033950001330036650200590049952020510055865000390260965000590264865000350270770000370274270000420277970000460282170000520286771000640291971000410298381000590302485600730308320260818170828.0260130s20249999th u  ms t    000   eng d  a.b124736371 aKasaudhan, Rahul10aOptimization of mechanical properties and durability of low carbon concrete using hydraulic cement and limestone powder in Thailand  aPathum Thani, Thailand :bAsian Institute of Technology,c2024  a66 leaves :bill.+e1 online resource1 aThesis ;vno. ST-24-08  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, 2024  aConcrete is the most used material after water globally. Concrete is used to construct  buildings, roads, bridges, and other infrastructures. But this all comes with a cost.  Cement production is one of the most CO2 emission industries, specifically 8%  contributing to climate change and environmental degradation. Sustainability has  always been a great challenge for construction industry. Various methods have been  adopted to cut down CO2 emissions such as use of SCM{u2019}s like fly ash and silica fume, energy efficient kilns, etc. This study explores the use of silica fume and fly ash as well  as limestone powder as SCMs to minimize carbon emissions without reducing the long term durability and strength of the concrete.In this study, 31 mix designs were developed by using Design of Experiments(DOE)  based on preliminary lab test results and literature reviews. After being cured for 28  days, the samples were tested. Abrasion, compressive strength, water permeability, slump, and chloride penetration tests were among the tests carried out. The  experimental results were used in Response Surface Methodology (RSM) to predict the  RSM models. Limestone powder turns out to be good SCM for replacement in concrete  made with hydraulic cement to boost the mechanical performance and durability. Also,  sustainability study was carried out in terms of CO2 emissions per kg per MPa. High  strength and durable were developed with cement use of as low as 255 kg/m3. Also,there was significant decrease in CO2 emissions compared to world average which is  10kg/m3/MPa to 6.42kg/m3/MPa {u2013} 4.25 kg/m3/MPa with cheaper cost than of conventional concrete.This study concluded that low cement high strength concrete can be developed with the use of limestone powder which acts as a concrete filler, filling the pores and increasing the strength substantially with minimization in cost. The prediction model presented by parallel coordinate plot can be used to select the mix as per requirements of cost and  performance of the concrete. 0aSustainable constructionzThailand 0aConcrete constructionxEnvironmental aspectszThailand 0aResponse surfaces (Statistics)0 aPennung Warnitchai,eChairperson0 aThanakorn Pheeraphan,eCo-chairperson0 aPunchet Thammarak,eExamination Committee0 aRaktipong Sahmitmongkol,eExamination Committee2 aComputers and Structures Inc.(CSI), USA,eScholarship Donor2 aAIT Scholarships,eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. ST-24-08403Full-Textuhttp://203.159.5.9/ait-thesis/Viewer/viewer.php?id=B23525