Development of high performance lightweight aggregate concrete using lignite fly ash | |
| Author | Mahaseth, M. K. |
| Call Number | AIT Thesis no. ST-95-16 |
| Subject(s) | Aggregates (Building materials) Fly ash |
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-95-16 |
| Abstract | This study deals with an experimental investigation on the development of high performance lightweight aggregate concrete using lignite fly ash. Semi-lightweight, all-lightweight and normal weight concrete specimens were tested for their compressive strengths at ages of 3, 7, 28 and 90 day; flexural strength tests at ages of 28 and 90 day. The expansion and shrinkage at different ages were also obtained. In semi-lightweight aggregate concrete, expanded shale was used as a coarse aggregate and natural sand was used as a fine aggregate. In all-lightweight aggregate concrete, expanded shale was used for both coarse and fine aggregates. Semi-lightweight and all-lightweight aggregate concretes were investigated in two ways : (i) without replacement of cement of by lignite fly ash (i.e. 100 % cement); and (ii) with replacement of cement by 30 % lignite fly ash by weight of total cementitious materials. By replacing cement by 30 % lignite fly ash, the surface of semi-lightweight and all-lightweight aggregate concrete specimens were found to be smoother than without replacing cement by lignite fly ash. Test results showed that lightweight aggregates can be manufactured by expanding the raw shale aggregates obtained from the Cholprathan-Cement Factory in Cha-Am, Petchburi at a temperature of 1200°C for 7.5 minutes in a crucible. This expanded shale can be used as a structural lightweight aggregate concrete. |
| Year | 1995 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-95-16 |
| 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) | Pichai Nimityongskul |
| Examination Committee(s) | Somnuk Tangterrnsirikul;Pennung Warnitchai;Nattawuth Udayasen |
| Scholarship Donor(s) | The Government of Japan |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1995 |