| Author | Dumangas, Mario Ibay |
| Call Number | AIT Thesis no. ST-99-34 |
| Subject(s) | Concrete--Research
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The method to estimate the long-term strength of a concrete mixture using the
accelerated strength obtained from microwave curing technique is investigated. The
determination of the optimum power for the different types of cement is then carried out.
Ordinary Portland cement (Type I) and high-early strength (Type III) cement concrete are
made and tested for compressive strength at early age (3.5 - 6.0 hours) and later-age (7,
14 and 28 days). Correlation between the later-age strength and the accelerated strength
are established for the different mix proportions. For Type III cement, about 40% is the
3.5-hour early strength with reference to the 7-day normal strength. In the case of Type I
cement for 14-day strength about 35% is the 5.5-hour early strength while Type I cement
for 28-day strength the 5.5-hour early strength is approximately 29%. Using the obtained
correlation to predict the long-term strength, the estimated percentage of error for Type
III cement at 7 days is ± 5% and for Type I cement at 14 days is ± 7% while Type I
cement at 28 days is ± 12%. The outcome of this study affirms that there are possibilities
in the estimation of the long-term strength using the accelerated strength obtained from
the microwave energy. |
| Year | 1999 |
| 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) | Thanakom Pheeraphan;Pennung Warnitchai;Wijeyeckrema, Anil Christopher; |
| Scholarship Donor(s) | The Government of Japan; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1999 |