Effect of Waste Foundry Sand on Indirct Tensil Strength of Asphalt Mixture

Abstract

Laboratory study for the use of recycled foundry sand to improve the performance of asphalt concrete mixture by replacement fine aggregate by waste foundry sand substitute for normal sand was conducted. The experimental work conducted for (4) different proportions (5, 15, 20 and 25)% as fine aggregate. (35) samples was prepared to examine the Marshall stability and flow and moisture damage for asphalt mixture. The obtained results indicate an increase of strength (IDT) for all mixtures than control mixture and higher resist to moisture damage with mixture has(FS (#50).The results showed improvement in behavior in terms of workability and durability and resistance.

Waste foundry sand characterization as paving aggregate

“…These preliminary comparisons show the diversity of WFS uses in asphalt road projects in relation to a similar WFS composition, regardless of its origin and author. Regarding to the other physical properties of the waste, Table 5 presents physical properties of WFS according to the current literature (Mishra, 2015;Klinsky et al, 2015;Yazoghli-Marzouk et al, 2014;Abdulsattar, 2018). This table speci)ies the origin of the WFS (steelmakers or land)ill) that each author used (identi)ied by the label of the reference) and the asphalt course which the WFS was used; in addition, Table 6 presents the physical properties of each course in each study, according to the references presented in Table 5.…”

“…This large volume raises some concern about the lifespan of industrial land)ills or environmental contamination. However, the reuse of WFS in civil construction activities has proven to be technically viable according to recent studies (Mishra, 2015;Klinsky et al, 2015;Yazoghli-Marzouk et al, 2014;Abdulsattar, 2018) since, the construction market, particularly asphalt paving projects, are the major consumers of mineral aggregates. In addition, this sector is also a strong indicator of socioeconomic growth, consequently new development should be released in the future, which might exhaust natural resources if alternative materials are not used in construction.…”

Use of Waste Foundry Sand (WFS) as Filler in Hot-Mixed Asphalt Concrete

“…There was a certain tendency that static ITS values will decrease as WFS content increased [7,9,10,13,32]. Mixtures 3 and 5 presented higher values of this parameter than control mixture 1 [25]. All asphalt mixtures presented values above the minimum value of the Brazilian standard (>0.65 MPa).…”

“…Over the past three decades, there have been several studies around the world on the use of WFS in engineering works, in different areas: base and subbase layers of highway construction [19][20][21], embankments [22,23], hydraulic barriers [24], asphalt mixtures [3,7,16,25,26], etc.…”

“…The indirect tensile strengths of the asphalt cement mixtures decreased as the percentage of WFS material was increased [7-10, 12, 13, 32]. However, Abdulsattar and Mohammed [25] found that all the WFS mixtures that they analysed showed higher tensile strength than the control mixture. According to Tikalsky et al [17], the level of air voids and saturation greatly influenced the indirect tension values.…”