| Author | Nguyen Dinh Quan |
| Call Number | AIT Thesis no.ST-04-15 |
| Subject(s) | Concrete--Testing
|
| 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-04-15 |
| Abstract | The relationship between flexural strength and compressive strength as well as the relationship
between compressive strength of cubes and cylinders of concrete with compressive strength
exceeding 100 MP a were investigated. More than one hundred specimen including 100x200
mm cylinders, 100x100x100 mm cubes, and 100x100x500 mm prisms were tested in
compression and tension at two test ages (7 days and 28 days). Very high strength concrete
using microsilica and superplasticizer with compressive strength at 28 days varying from 100
to 140 MPa were made in normal condition and cured in water curing in accordance with
American Society for Testing Materials (ASTM) Standards.
The results showed that flexural strength of very high strength concrete is around 10 percent
of compressive strength, whereas this ratio of normal strength concrete is 15 percent. It was
observed that the current equations presented in recent ACI codes and recommended practices
underestimate the flexural strength of concrete in this study. The relation between compressive
strength of cylindrical and cubic specimens was obtained to be linear and different depending
on test ages. Two equations to determine the compressive cylinder strength based on cube
strength were suggested. For very high strength concrete, it was also found that the
compressive strength of cylinders were slightly higher than the compressive strength of cube
whereas for normal strength concrete the cylinder strength always less than cube strength.
Moreover, in uniaxial compression test of very high strength concrete, the non-bond capped
rubber was observed to be significantly influencing the failure modes of cylinders. |
| Year | 2004 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-04-15 |
| 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 ;Tawatchai Tingsanchali; |
| Scholarship Donor(s) | Ministry of Education and Training, Vietnam; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2004 |