| Author | Noorajan |
| Call Number | AIT Thesis no. ST-80-17 |
| Subject(s) | Aggregates (Building materials)--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 |
| Abstract | Four types of coarse aggregate locally available in Thailand were tested for their physical and mechanical properties. Tests were made with different
types and sizes of coarse aggregate to study the effect of aggregate properties on strength and workability of gap- graded concrete. Test results showed that the workability of fresh gap-graded concrete
was considerably affected by the types and size distribution of aggregate. Among the four types of aggregate tested, sandstone produced concrete with the least workability whereas gravel gave the most workable concrete without
segregation. Increasing the size of aggregate, both coarse and fine, led to a more workable concrete. gate. Test results indicated that the mechanical properties of gap-graded concrete were considerably affected by the properties of coarse aggregate used
therein. Gap-graded concrete made with sandstone aggregate gave the highest strength and exhibited, in spite of the highest strength, lowest modulus of
elasticity. This phenomenon is mainly caused by the absorption capacity, compressibility and bond strength between matrix and surface of coarse aggregate
The modulus of elasticity of gap-graded concrete was directly related to the modulus of elasticity of gap- graded concrete. The design method suggested by LI and RAMAKRISHNAN (1) can be used to produce an optimum mix proportion for all tested crushed aggregates. However, for natural aggregates like gravel this design method has to be modified in order that an optimum proportion is attained. |
| Year | 1980 |
| 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) | Yamamoto, Yasuhiko ;Kawaguchi, Masahiro
|
| Scholarship Donor(s) | Canadian Government |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1980 |