Structural behaviour of prefabricated lightweight concrete wall panels | |
| Author | San Kyu |
| Call Number | AIT Thesis no.ST-98-06 |
| Subject(s) | Structural dynamics Precast concrete construction |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The purpose of this research work was to evaluate the structural performance and compare the cost competitiveness of prefabricated lightweight concrete wall panels commonly used in Thailand. Three types of prefabricated lightweight concrete wall panels, both unreinforced and reinforced, namely rice husk concrete, lightweight concrete and autoclaved aerated concrete wall panels were produced by three different manufacturers. Depending upon the thickness and density of the panels, two different categories from each manufacturer were tested for their transverse, compressive and flexural loads and strengths in accordance with relevant ASTM standards. Both individual and jointed wall panels were tested and compared. For all types of tests, the first crack, maximum permissible and ultimate loads, strengths, deflections and the failure pattern were observed and compared. A cost analysis for each type of prefabricated lightweight concrete wall panels was also conducted. Test results showed that, the highest first crack, maximum permissible and ultimate transverse loads were obtained for hollow core rice husk concrete wall panels having the thickness of 10 cm, whereas the lowest was found in autoclaved aerated concrete wall panels having the thickness of 7.5 cm in the first crack and maximum permissible transverse loads and the lightweight aggregate concrete wall panels having density of 1500 Kg/m3 in the ultimate transverse load. In the compressive load tests, the loads from experiments were found to be much greater than predicted loads in all types of wall panels. Rice husk concrete wall panels could resist the highest ultimate compressive loads among others and the lowest was found in autoclaved aerated concrete wall panels. In the flexural load tests, the similar trends were observed as the transverse load tests. The modulus of resilience was found to be the highest in rice husk concrete wall panels and the lowest in lightweight aggregate concrete wall panels. In the cost analysis the strength to cost ratios indicated that rice husk concrete wall panels having the thickness of 10 cm was the most competitive type of the prefabricated lightweight concrete wall panels among all types tested in this study. Even though rice husk concrete wall panel was found to be the best, its brittle type failure was undesirable. On the other hand, although autoclaved aerated concrete wall panel was found to be not as good in the structural performance, it possesses a desirable ductile failure and is lighter in weight than others. |
| Year | 1998 |
| 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) | Pichai Nimityongskul; |
| Examination Committee(s) | Gupta, Satyendra P.;Wijeyewickrema, Anil C.; |
| Scholarship Donor(s) | DAAD; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |