Effect of water to cement ratio on the propagation of shrinkage crack in cellular lightweight concrete | |
| Author | Wanasinghe, Charuka Madusanka |
| Call Number | AIT Caps. Proj. no.CIE-14-26 |
| Subject(s) | Lightweight concrete Concrete--Shrinkage |
| Note | A capstone project report submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Engineering in Civil and Infrastructure Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. CIE-14-26 |
| Abstract | With the innovation of lightweight concrete, the concrete technology has widened its applications in to new limits such as cellular lightweight concrete (CLC). A leading precast production company of Thailand has faced a drawback with their CLC blocks due to shrinkage cracking. In order to find a solution, this research was carried out check the effect of water to cement ratio towards the propagation of considered shrinkage crack. Water to cement ratios of 0.375 and 0.5 were selected referring to literature and six mix designs were casted while fly ash replacement percentage was also varied by 15, 23 and 30 in order to obtain a more fruitful solution. ASTM C 596 Standard was followed to obtain shrinkage measurements while ASTM C 495 was followed to obtain compressive strength and density measurements of each mix design. It was found that drying shrinkage of CLC is increasing rapidly within first two weeks and it is reduced with the increase of water to cement ratio. In the mix designs with constant water to cement ratio it was found that when fly ash percentage is increased, the shrinkage is reduced. The mix design with Water to cement ratio of 0.375 and fly ash replacement percentage of 30 could be proposed as most suitable design in terms of drying shrinkage, compressive strength and dry density. |
| Year | 2014 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-14-26 |
| Type | Capstone Project |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Civil and Infrastructure Engineering (CIE) |
| Chairperson(s) | Teraphan Ornthammarath; |
| Examination Committee(s) | Punchet Thammarak ;Kawin Worakanchana; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2014 |