Provide a 5 pages analysis while answering the following question: Properties of Concrete Containing Recycled Aggregates. Prepare this assignment according to the guidelines found in the APA Style Guide. An abstract is required. The study concluded that the percentage of the recycled aggregate increased with a decrease in the strength of the concrete.
To date, there has been an increasing interest and demand in aggregates starting from industrial by-products, nontraditional sources, and recycled demolition and construction wastes. The Pozzolan and the recycled aggregates are some of the concrete that has recently gained popularity in the construction industry (Smith 3). The pozzolan is an aluminous and siliceous material that posses none or little cementations value. In water or in a finely separated form, the material chemically reacts with calcium hydroxide to give out compounds with cementation traits. This may happen at normal temperatures. The artificial and natural pozzolan material is used as supplementary materials of cementations. In any case, the artificial pozzolan could be made in a deliberate manner through the thermal activation of the clays kaolin to give the metakaolin. In other cases, the material can be obtained as a byproduct from the processes of high temperature like the fly ashes given out by the production of the coal fire electricity. The industrial by-products like the metakaolin, burned residues of organic matter like rice husk, fly ash, and fume silica obtained from the smelting of silicon are commonly used pozzolans. The use of these pozzolans is reported to be well established in different countries (Smith 15). Supplying high quality by-products of pozzolan has limitation since many local sources have been fully exploited. Different alternatives to the pozzolanic by-product should be realized to expand the range of the byproducts of the industry and to increase the usage of the pozzolans. In some locations, the natural pozzolan may be found in abundance. This material is used as a Portland cement addition in countries like Germany. A significant portion of the natural pozzolan used in many countries has a volcanic origin. The pumices, volcanic ashes, are mostly used since they are deposits having altered volcanic glass.