Utilization of aluminum dust and coal-fly ash for the production of bricks / Aira Patricia M. Ordoñez.

Thesis (Bachelor of Science in Civil Engineering) Cavite State University.

Includes bibliographical references.

College of Engineering and Information Technology (CEIT), Department of Civil Engineering

ORDONEZ, AIRA PATRICIA M., VIDALLO, YEVGENY N. Utilization of Aluminum Dust and Coal-fly Ash in the Production of Bricks. Undergraduate Thesis. Bachelor of Science in Civil Engineering, Cavite State University, Indang, Cavite. June 2018. Adviser: Engr. Roslyn P. Pella.
The study entitled "Utilization of Aluminum Dust and Coal-fly Ash in the Production of Bricks" was conducted at Bacao II, Gen. Trias, Cavite from September 2017 to March 2018. Generally, the objective of this study was to produce bricks using aluminum dust and coal-fly ash. Specifically, this study aimed to determine the effect of aluminum dust and coal-fly ash as substitute to sand in the production of bricks, determine the optimum mix ratio that will have the highest compressive strength attained from the specimens to be produced,. determine the effects of submerging of the bricks in the water on the compression strength and hardness of the product and to identify the type of brick that was produced with the optimum mix ratio of the study. Aluminum dust, is a waste material and a by-product of aluminum dross recycling industry. In small scale businesses, it takes an ample amount of time collecting and gathering huge amount of aluminum dust. As a result, rather than selling,• it is considered as waste and disposed on landfills. This causes the increase in the metallic content of soil that causes poor vegetation of plants and when rainfall happens, aluminum dust is flooded and increases the metallic content of water and cause the natural habitant to be polluted. Also, groundwater is affected. Coal-fly ash, or fly ash for short, also considered as a waste material and a by-product of burnt coal ash from thermal stations and power plants. Huge amount of fly ash as produced worldwide but only few of them are being utilized. Because of this large quantity, estimated of more than fifty percent of total amount became part of the solid wastes and being disposed in landfills and that causes environmental pollutions. There were 3 treatment used. Treatment 1 (20% cement — 50% aluminum dust — 30% coal-fly ash); Treatment 2 (20% cement — 40% aluminum dust — 40% coal-fly ash); and Treatment 3 (20% cement — 30% aluminum dust —50% coal-fly ash). The produced specimen in three different treatments were undergone in 0, 7 and 14 — day submerging. Based on the results obtained from the test conducted, all treatment passed the hardness test and impact test. In compression strength test, treatment 3 (14 days submerged in water) have the highest compression strength of 5.65 MPa. Aluminum dust acted as aerating agent in the produced bricks. The results show that the more in aluminum dust, the lighter the bricks-would.be. Also, the produced bricks is said to be economical because of the waste-recycled material used. The application of aluminum dust and coal-fly ash in each treatment can produce lightweight bricks that can be used for aesthetic purposes. The treatments produced are cheaper compared to commercial pavement bricks with same size. As derived from the results of the study, the authors recommend that during the process or natural curing, bricks should be sprayed with -water. The- authors suggest that the bricks be submerged in water for 7, 14 and 28 days as a process of curing. The authors suggest to try different mixture combinations of materials used. The-authors recommend the use of 30 percent aluminum dust and 50 percent coal-fly ash on bricks that can be used to decorate walls and columns. The authors suggest that the recommended bricks for aesthetics to lessen the thickness for cheaper cosh of production per bricks.

Submitted to the University Library March 13, 2018 T-7828