Waste Paper Ash as Additives for High Strength Concrete Mix 45 MPa

Abstract

High strength concrete is very widely used today to support the construction of buildings, roads, dams, bridges and so on. To make high quality concrete, additional material is needed as a concrete mixture, the added material today is very much in the market as well as added ingredients derived from fly ash, and rice husk, especially rice husk is most widely used as a mixture in making concrete, due to the chemical content of SiO2 contained in rice husk ash. In this study we made high strength concrete using ash derived from waste paper. Paper ash was burned manually and then filtered using sieve number 150. Paper ash was then tested for its chemical content. The results of the chemical content test derived from paper waste ash have a CaO of 92.70 while SiO2 is only 2.63%. The making of test specimens was made as many as 90 pieces with some additional variations of noble ash from 0%, 5%, 10%, 15%, 20%, and 25%. Concrete compressive strength test results with a code of 0% could not achieve the quality plan of 45 MPa, while the addition of ash by 5% reached 41 MPa compressive strength more, the highest compressive strength produced by a mixture of 10% paper ash which achieved a compressive strength of more than 45 MPa plan. Whereas specimens with a mixture of 15%, 20%, and 25% produce concrete with compressive strength below 36 MPa. From the results of the study it can be concluded that the use of 5% and 10% waste paper ash can increase the compressive strength of concrete. Ash from paper waste can be an alternative material added to the concrete mixture.

Recycling of waste papers: yield and quality of the ash-derived materials

“…Recently, it has been reported that waste paper ash (WPA) can be used to modify the plaster of Paris (POP) ceiling for improved performance [14]. Also, the utilization of WPA as a partial cement replacement material can improve the compressive strength of masonry materials such as concretes [15][16][17][18] and concrete blocks [19]. WPA is an effective stabilizer of clay soil for either road construction [20] or building design [3].…”

Density and Water Absorption Coefficient of Sandcrete Blocks Produced with Waste Paper ash as Partial Replacement of Cement

“…Again, incorporation of waste paper (either by addition, substitution, or replacement) with fine aggregate, coarse aggregate, or cement brings about increase in mechanical properties of concrete [6,7]. Not only that, Mitikie and Waldtsadik [8], Subanndi [9], Meko and Ighalo [10], and Azar et al [11] reported that improvement in compressive strength of concrete is possible by inclusion of waste paper ash as a partial cement replacement material. Even at that, waste papers still remain under-utilized.…”