Production of low-cost pavement concrete blocks using Mae-Moh fly ash | |
| Author | Sukanya Nutalaya |
| Call Number | AIT Thesis no.ST-94-25 |
| Subject(s) | Fly ash Concrete blocks |
| Note | A Thesis submitted in partials fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Tue objective of this study is to investigate the prope1ties of low cost pavement concrete blocks using Mae-Moh fly ash. The pavement blocks were produced by using the mechanical press. To determine prope1ties and to classify types of concrete blocks using Mae-Moh fly ash in different propo1tions, the main parameters were types of pozzolanas, their percentages of replacement and dosage of admixture. Peanut shell ash and 1ice husk ash were also used for compatison. The mechanical prope1ties of pavement blocks investigated include compressive strength at the ages of 7, 14 and 28 days and acid resistance at the ages of 30 days. The physical prope1ties of pavement blocks determined are absorption at the age of 28 days and the time of setting. The water/cementitious ratios tested based on best compressive strength under flow values range from 2 to 8% at which mixture can be properly molded. Test result showed that the optimum percentages of replacement of fly ash in cement in the production of pavement concrete blocks was 35% based on their compressive strengths. Apa1t from fly ash, peanut shell ash and rice ยท husk ash can be used as pa1tial replacement of cement in pavement block production. Superplasticizer can be used as an admixture at a dosage of 2 percent by weight of cementitious material. The results showed that blocks containing fly ash can withstand acid resistance better than those without pozzolana. Blocks were classified into 4 categmies based on their costs and strengths. The results also showed that the production of low-cost pavement concrete blocks using fly ash was feasible for rural area where these wastes were available freely. |
| Year | 1994 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pichai Nimityongskul |
| Examination Committee(s) | Ogunlana, Stephen O. ;Aoyagi, Yukio ;Lefebvre, Bernard G. |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1994 |