Shrinkage and curling curvature of cement mortar induced by water loss | |
| Author | Wang, Dah-renn |
| Call Number | AIT Thesis no.ST-92-24 |
| Subject(s) | Mortar Concrete--Expansion and contraction |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Drying shrinkage of concrete plays a major role in the durability of concrete structures because of its great amount of hair-like crack it produce. Furthermore, this type of crack is govern by many factors, which make the task of improving the durability of concrete more complex and difficulty. Based on this concept, a series of alternate wetting and drying tests were carried out on the mortar slab to study the cyclic behavior, and the relationships among the specific water loss, mean curling curvature and mean shrinkage strain under different moist curing duration, water to cement ratio and thicness of the slab. The results of different moist curing duration of mortar slab have shown that the longer the duration the larger shrinkage is induced. Similarly, the lower the water to cement ratio the larger shrinkage stress will be induced. These results have also shown that the curling curvature is not so much dependent on the moist curing duration and water to cement ratio. This phenomenon indicates that the moisture distribution is the predominent factor which govern the curling. Lastly, the thickness of slab also play an important role to the curling curling curvature. The thinner the thickness the greater curling curvature will be occured. |
| Year | 1992 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-92-24 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Maekawa, Koichi |
| Examination Committee(s) | Pichai Nimityongskul;Worsak Kanok-Nukulchai |
| Scholarship Donor(s) | Government of the Republic of China |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1992 |