دانلود رایگان مقاله کامپوزیت با باقی مانده سنگ مرمر و گرانیت برای ساخت خانه محبوب

Abstract

The use of composite materials for the construction industry has been the subject of numerous scientific studies in Brazil and worldwide. This paper presents a composite that was obtained from waste generated in the process of obtaining plates of granite and marble, cement, gypsum, sand, crushed EPS and water. These wastes cause great damage to the environment and are thrown in landfills in large quantities. Several blocks from varied compositions were manufactured and preliminary tests of mechanical and thermal resistance were performed, allowing the selection of the most appropriate proportion. Manufacturing processes and assembly of the blocks to build an experimental residence were discussed. The blocks were obtained in two configurations: with voids and with PET bottles filling. It was studied which type of block and residue was more viable for the proposed order. The formulation that was more efficient in terms of mechanical and thermal resistances was: 1.0 Cement +2.0 Sand +1.0 Styrofoam +1.0 Marble and Granite Powder+Water. The mechanical strength of the blocks was above 3.0 MPa. The thermal resistance of the blocks was confirmed by the maximum difference between the inner and outer walls of 8.0 °C. The acoustic absorption levels were higher than the levels provided by the conventional bricks, but lower than the minimum level of a material that has acoustic insulation capacity around 45%.

4. Conclusions and suggestions

● The proposed composite block was viable for use in residential construction. ● All the tested formulations showed a lower mechanical resistance compared with traditional formulations used for the construction of blocks for structures. ● The formulation for the best combination among mechanical and thermal resistance was 1C+1G+2S+1STY+1M/GP, which was chosen for the manufacturing of the blocks. ● The rooms that were built with composite blocks had an identical behavior in relation to the thermal resistance and an equivalent thermal comfort. ● Room 3, built with blocks containing PET bottles, presented a better thermal sensation, which allows to assume that it would provide more thermal comfort. ● The walls with highest capacity of acoustic absorption were from room 1, which has the blocks built with the pure marble powder composite. ● Reduce the length of the block by half to ensure a greater stability in the settlement process and also to make the transportation easier.