| Preparation of Geopolymer Bricks from Industrial Wastes |
| Paper ID : 1148-IUGRC5 (R2) |
| Authors: |
|
Ahmed Yahya Mohamed1, Mohamed El-Madany Anwar2, Ahmed Amr Abd El-Aziz2, Omar Mohamed Abd El-Aziz2, Kamilia Ahmed Kamal Mohamed Elnaggar *3 1Egyptian Academy for Engineering and Technology 2Egyptian Academy for Engineering and advanced Technology 3Egyptian Academy for Engineering and Advanced Technology |
| Abstract: |
| Geopolymer, categorized as an inorganic polymer, which is mostly made from silicon and aluminium materials or can be manufactured from fly ash. The main advantages of geopolymer technology comparing to that of fired clay bricks is to decrease harmful emissions. The essential goal of the present study is to prepare geopolymer bricks from cheap raw materials, mainly industrial wastes to be used in the construction industry. The environmental benefits of recycling construction and demolition wastes in geopolymer bricks industry decreases the negative impact of their dump filling on the environment, besides reducing CO2 emission in the atmosphere that produced from firing normal bricks. The raw materials used were: construction and demolition waste as substituent with different proportions to homra (waste from fired clay brick industry), calcium hydroxide waste from acetylene industry and NaOH. The raw materials were characterized by XRD, XRF. The water blended mixes were moulded, air dried at room temperature and tested on compressive strength, bulk density, and water absorption for different curing time (3,7,14 and 28 days). It has been found that 5 wt.% replacement yielded a compressive strength of 6.6 MPa at 14 days then there was a decreasing with curing time exceeding 7 days to reach an almost constant value of about 5.4Mpa, with slight increase in water absorption after 7 days curing time. Mechanical mixing for the 5 wt.% C&D waste replacement was also investigated, yielded a compressive strength of 6.6 MPa, 8.8MPa, 9.1MPa and 8.4MPa at 3, 7, 14 and 28 days respectively. |
| Keywords: |
| Sustainability; Geopolymer; Construction and demolition wastes; Fired clay bricks wastes; Mechanical strength. |
| Status : Paper Accepted (Oral Presentation) |
