An experimental study of the mechanical properties and durability of basalt fiber reinforced preplaced aggregate concrete | |
| Author | Amin, Mehmud Murshed Ul Al |
| Call Number | AIT Thesis no.ST-21-03 |
| Subject(s) | Basalt Fiber-reinforced plastics--Mechanical properties Aggregates (Building materials) Reinforced 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-21-03 |
| Abstract | In this paper, the mechanical and durability properties of basalt fiber reinforced preplaced aggregate concrete (BFPAC) were studied. This research aimed to investigate the effect of basalt fiber length, fiber volume fraction, and sand to binder ratio of grout on the compressive strength, flexure strength, impact resistance, and chloride penetration resistance. In doing so, various trials related to the fresh properties of the grout, placing/mixing fiber with aggregate, grout penetrability, and consolidation were also carried out.12 mm and 31 mm size basalt fiber with, volume fraction 0.25% to 1%, and S/C ratios 0.5 to 1.0 had been selected as the limiting factor to form DOE and 120 samples were prepared including the control mix. Using the statistical software Minitab 17 the analysis was done and the main effect, interaction effect, Pareto chart, and contour for each response had been investigated and optimized to get the optimum value of each response for the optimum cost of concrete. The model developed by the data analysis was validated by the further casting of BFPAC with an optimum fiber content of 0.37% of total volume, fiber size of 31 mm, and sand to cement ratio of 1.0. 31mm basalt fiber with a volume fraction of 0.5% and s/c ratio of 1 had been selected to cast conventional FRC and BFPAC of the same grade (M-30) to compare all the responses, along with the cost of BFPAC and FRC. Finally, A comparative study has been discussed. With all the investigated results found from Minitab 17, the effect of all factors was summarized and well thought out plan was executed to improve the result. In short, the addition of large content of longer fiber has a good influence on the mechanical properties of BFPAC whereas the effect of fiber on the durability of BFPAC is not quite significant rather it affected the grout penetrability and further consolidation of concrete. The enhancement technique adopted gives 21.35% higher flexure strength and 66.4% higher rapid chloride penetration resistance. Finally, there was some recommendation made about the suitability of the application and efficient use of fiber. |
| Year | 2021 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-21-03 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pennung Warnitchai;Thanakorn Pheeraphan (Co-Chairperson); |
| Examination Committee(s) | Anwar, Naveed;Punchet Thammarak; |
| Scholarship Donor(s) | Local Government Engineering Department (LGED), Bangladesh; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2021 |