Effect of Slag and Recycled Materials on the Performance of Hot Mix Asphalt (AC-BC)

Abstract

The limitations of road construction materials require alternative materials such as asphalt recycling and utilization of waste potential such as steel slag for aggregate substitutes. In this study, there were tests for slag characteristics and reclaimed asphalt pavement (RAP) then continued with a marshall test to determine the optimum asphalt content (OAC). The nine mixtures planned in this study consist of 10-30% Slag combined with 10-30% RAP with Reclamite as a rejuvenating material. Using a combination of RAP, there is a decrease in the mixing and compaction temperature of 20°C compared to the conventional hot mix. Test results on hot mix asphalt using a combination of RAP and slag generate an increase of 10-30% each using a combined gradation and volume correction.

Development of Asphalt Mix Stiffness Modulus Model Using Slag Materials and Reclaimed Asphalt Pavement

“…This study used 16 mixture designations in which there were variations in the percentage of slag and RAP with one mixture as a control using natural aggregate and asphalt pen 60/70 as shown in Table 3. Using the Marshall method, it is known that the optimum asphalt content in each mixture combination will be used for the mixture resilient modulus test, where further discussion regarding the determination of optimum asphalt content can be seen in another paper that has been presented by the author [5,13]. The asphalt stiffness modulus can be determined based on a laboratory test using Dynamic Shear Rheometer (DSR) [14], with a test frequency of 10 rad/s and the test temperature that refers to the temperature range contained in the PG [15].…”

“…Based on analysis statistical with the classic assumption test obtained two models that meet the requirements were selected, Eq (4) and (5) From the two models, we can assess the overall model fit using the (adjusted) R2 and the significance of the F-value the result of a one-way analysis of variance (ANOVA). When we interpret the model fit, the F-test is the most critical, as it determines if the overall model is significant.…”

“…The Author acknowledgment support from Indonesia Endowment Fund for Education (LPDP), Ministry of Finance, Republic of Indonesia. Eq (4) Eq (5)…”

“…Both for its rheological properties and its mechanistic properties, where the modification is other than improving the overall mixture, is also environmentally friendly. An example is the utilization of waste, namely the use of RAP technology which is the result of the process of pavement scraping and utilizing artificial aggregates, one of which is the slag aggregate [4,5].…”

Karakteristik Campuran Lataston (HRS-WC) dengan Filler Gypsum pada Aspal Modifikasi Polimer

“…Filler dan aspal merupakan pengisi dan perekat dalam campuran aspal yang mempunyai peranan penting dalam campuran. Beberapa bahan pengisi filler dapat digunakan antara lain abu batu (Winarno, Budi, Candra, Muslimin, & Sudjati, 2020), kapur (Andri, Setiawan, & Pradani, 2012), portland cement (PC) (Sunarjo & Cendikis, 2020), slag (Bethary, Subagio, Rahman, & Suryana, 2019), bubuk gypsum (Auditia, Rendih, Elnov, H, & Rachmasyah, n.d.) dan material plastis lainnya. Pada penelitian ini dicoba menggunakan bubuk gypsum selain dapat mengurangi penggunaan filler, berfungsi juga sebagai perekat dikarenakan gypsum tersusun dari calcium sulfate dihydrate (CaSO4.2H2O) yang dimana calcium sulfate merupakan zat kapur yang mempunyai sifat sebagai perekat , mempunyai sifat yang lebih baik dibandingkan dengan perekat organik karena tidak menimbulkan pencemaran udara, murah, tahan api, tahan deteriorasi oleh faktor biologis dan tahan terhadap zat kimia (Rochmanto, 2019.…”