Development of high-strength and durable concrete mix proportions by using replacement of fly ash and silica fume | |
| Author | Phyu Phyu Myint |
| Call Number | AIT Thesis no.ST-05-10 |
| Subject(s) | Concrete--Mixing Silica fume Fly ash |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-05-10 |
| Abstract | This study was conducted the mix proportions of high-strength and durable concrete by using replacement of fly ash and silica fume. Mix proportions were developed for cement replacement of 15%, 30%, and 50% with fly ash and the combination of 15% and 30% fly ash plus 5% and 10% silica fume. The dosage of superplasticizer was controlled at range 0.8 to 2% by weight of cement for all cases. Mechanical properties such as compressive strength and splitting tensile strength of each varying mix proportions were studied. The durability characteristics of different high-strength and durable concrete mix proportions were evaluated by measuring: (i) rapid chloride permeability test, (ii) water permeability test, and (iii) bulk diffusion test. Test results showed that the mixes associated with fly ash and the combination of fly ash and silica fume, performed better than the no-fly ash and silica fume concrete mix against the chloride permeability. Chloride permeability of mix containing both fly ash and silica fume was lower than the mixes associated with only fly ash and no-fly ash. The rapid chloride permeability values decreased as the amount of fly ash was increased. However, the coefficient of water permeability decreased as the amount of fly ash up to 30% was increased at beyond 30% fly ash content, it must be increased again. The better resistance for water permeability can be achieved the mixture proportions containing in the range 15% to 30% fly ash content on early age. The content of fly ash decreased, the compressive strength was decreased on early age. The splitting tensile strength of all mixtures approximately ranged from 6% to 10% of its compressive strength. |
| Year | 2005 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-05-10 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pichai Nimityongskul; |
| Examination Committee(s) | Pennung Warnitchai;Barry, William Joseph; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2005 |