Development of preplaced aggregate concrete for rigid pavements | |
| Author | Gallege, Janith Hirosha |
| Call Number | AIT Thesis no.ST-18-08 |
| Subject(s) | Aggregated (Building materials) Lightweight concrete |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-18-08 |
| Abstract | This research is carried out to develop preplaced aggregate concrete for use in rigid pavements. Since flexural strength of concrete is the main concern in rigid pavements great care is given to improve flexural strength. Grout materials such as fly ash, sand, water and silica fume are varied carefully to improve flexural strength. To maintain the sufficient flowability fresh properties such as mini slump and flow time of grout are checked. Compressive strength of grout and compressive strength of preplace aggregate concrete are also checked along with flexural strength to develop relationships. 2k (two level full factorial) model with center points is selected where k is the number of factors considered. The rate of superplasticizer kept constant at 0.5 % from weight of binder to fulfil the water demand. 33 experiments are performed to obtain results and analyzed using statistical software called MINITAB 17. Analyzed results showed that sand and silica fume have a highest effect on grout fresh properties. When sand and the silica fume content of the mixes increases mini slump values reduced and flow time increased respectively. Compressive strength and flexural strength increased with incorporating more sand and silica fume. Highest flexural strength achieved was 5.04 MPa in 28 days while highest compressive strength was 47.41 MPa. Improved flexural strength values that were achieved are acceptable for use in rigid pavement projects such as airport runways and taxiways. |
| Year | 2018 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-18-08 |
| 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) | Punchet Thammarak;Thanakorn Pheeraphan; |
| Examination Committee(s) | Pennung Warnitchai;Raktipong Sahamitmongkol; |
| Scholarship Donor(s) | AIT Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2018 |