scholarly journals Process Improvement on the Gradation Uniformity of Steel Slag Asphalt Concrete Aggregate

2016 ◽  
Vol 31 ◽  
pp. 627-634 ◽  
Author(s):  
Jia-chen Xi ◽  
Xiao-dong Xiang ◽  
Can-hua Li
Keyword(s):  
Process Improvement ◽  
Asphalt Concrete ◽  
Steel Slag ◽  
Concrete Aggregate

scholarly journals Research progress of steel slag asphalt concrete

2020 ◽  
Vol 175 ◽  
pp. 11014
Author(s):  
Jian Sun ◽  
Andrii Bieliatynskyi ◽  
Kateryna Krayushkina ◽  
Oleksandra Akmaldinova
Keyword(s):  
Asphalt Concrete ◽  
Steel Slag ◽  
Research Progress ◽  
Practical Application ◽  
Excellent Performance ◽  
At Home

Steel slag asphalt concrete is one of the important components of asphalt concrete. There are some differences between the steel slag asphalt concrete and ordinary asphalt concrete. Based on the research of scholars at home and abroad, this paper systematically introduces the steel slag characteristics and excellent performance of steel slag asphalt concrete, summarizes the problems existing in the practical application of steel slag asphalt concrete, and provides references for its promotion and application.

scholarly journals Influence of Partial Coarse Fraction Substitution of Natural Aggregate by Recycled Concrete Aggregate in Hot Asphalt Mixtures

2019 ◽  
Vol 12 (1) ◽  
pp. 250 ◽  
Author(s):  
Debora Acosta Álvarez ◽  
Anadelys Alonso Aenlle ◽  
Antonio José Tenza-Abril ◽  
Salvador Ivorra
Keyword(s):  
Asphalt Concrete ◽  
Coarse Fraction ◽  
Asphalt Mixtures ◽  
Recycled Concrete ◽  
Construction And Demolition Waste ◽  
Recycled Aggregate ◽  
Concrete Aggregate ◽  
Recycled Concrete Aggregate ◽  
Demolition Waste ◽  
Natural Aggregate

The main objective of this work is to evaluate the properties of hot asphalt mixtures that have been manufactured with different recycled concrete aggregate (RCA) percentages (0%, 20%, 40%, 60% and 80% of the fraction 5–13 mm) and asphalt (4%, 4.5% and 5%). Dense asphalt mixtures were made; partially replacing the natural aggregate (NA) fraction between 5 and 13 mm. Marshall specimens were manufactured to determine the main properties of the asphalt concrete (AC) in terms of density, voids, stability and deformation. Additionally, the optimal asphalt content (OAC) was determined, and measured the water sensibility, the stiffness modulus and the permanent deformation. The results corroborate the potential for using these sources of construction and demolition waste (CDW) as a RCA in asphalt concrete and show that the hot asphalt mixtures with up to 40% substitution of natural aggregate by recycled aggregate in the fraction 5–13 mm present good behavior.

Properties of Asphalt Concrete Using Aggregates Composed of Limestone and Steel Slag Blends

2020 ◽  
Vol 32 (7) ◽  
pp. 06020007
Author(s):  
Saowarot Hasita ◽  
Apichat Suddeepong ◽  
Suksun Horpibulsuk ◽  
Wisanukhorn Samingthong ◽  
Arul Arulrajah ◽  
...  
Keyword(s):  
Asphalt Concrete ◽  
Steel Slag

scholarly journals Kinerja Modulus Resilien Campuran Beraspal Panas Asphalt Concrete Binder Course (AC-BC) Yang Mengandung Recycled Concrete Aggregate

2020 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Galih Wulandari Subagyo
Keyword(s):  
Test Data ◽  
Asphalt Concrete ◽  
Recycled Concrete ◽  
Concrete Aggregate ◽  
Recycled Concrete Aggregate ◽  
Marshall Test

Aktivitas konstruksi membutuhkan material batu maupun  pasir yang tidak sedikit jumlahnya, maka secara langsung aktivitas konstruksi bertentangan dengan konservasi lingkungan yang mempuyai maksud dan tujuan untuk pelestarian ataupun perlindungan alam. Isu-isu  tentang konservasi tersebut merupakan pendorong yang kuat dalam pengembangan teknologi perkerasan aspal untuk memperoleh perkerasan yang awet, murah dan ramah lingkungan termasuk di Indonesia, yang tentunya meminimalisir adanya perusakan alam, salah satunya dengan menggunakan bahan limbah untuk perkerasan jalan yang baru sudah banyak dilakukan. Salah satu bahan limbah yang akan dicoba untuk mengganti agregat baru pada penelitian ini yaitu limbah beton. Variasi limbah beton 0%, 5%, 10%, 15% terhadap total agregat baru. Kemudian dilakukan pengujian terhadap benda uji tersebut dengan metode marshall test (data pengujian tes Marshall, rendaman marshall dan kepadatan mutlak didapatkan dari penelitian terdahulu) sampai dengan uji modulus resilien sehingga didapat hasil karakteristik Marshall berserta hasil dari modulus resilien. Limbah beton yang di gunakan berasal dari beton mutu K-250 (sisa pengujian kuat tekan) telah memenuhi persyaratan sebagai agregat campuran aspal panas berdasarkan Spesifikasi Bina Marga Tahun 2010 Divisi 6 (Revisi 3). Terhadap nilai modulus resilien campuran AC-BC yang mengandung Limbah beton lebih superior dibandingkan dengan tanpa limbah beton di tiga temperatur pengujian 25°C, 35°C, 45°C.

scholarly journals Research of properties on graphite conductive slag in asphalt concrete

2020 ◽  
Vol 175 ◽  
pp. 11015 ◽  
Author(s):  
Jian Sun ◽  
Andrii Bieliatynskyi ◽  
Kateryna Krayushkina ◽  
Oleksandra Akmaldinova
Keyword(s):  
Electrical Conductivity ◽  
Asphalt Concrete ◽  
Electrical Resistance ◽  
Steel Slag ◽  
Graphite Powder ◽  
Snow Removal ◽  
Conductive Mechanism ◽  
Conductive Properties ◽  
Resistance Stability ◽  
Technical Idea

Conductive asphalt concrete can eliminate snow and icing on road areas, and is a research hot topic for intelligent snow removal. By adding graphite, the electrical resistivity of asphalt concrete can be reduced to achieve the purpose of electrical conductivity. However, the aggregate electrical resistance in asphalt concrete is very large and does not play a conductive role. It is a new technical idea to use steel slag with good electrical conductivity as aggregate to mix graphite powder with good electrical conductivity to prepare steel slag graphite conductive asphalt concrete (SGCAC). In this paper, the effects of steel slag and graphite on the conductive properties of steel slag graphite conductive asphalt concrete are separately explained, and then the conductive mechanism and electrical resistance stability of the conductive slag and graphite are studied.

scholarly journals Mechanical Properties of Crumb Rubber and Basalt Fiber Composite Modified Porous Asphalt Concrete with Steel Slag as Aggregate

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2552
Author(s):  
Chao Chai ◽  
Yongchun Cheng ◽  
Yuwei Zhang ◽  
Bing Zhu ◽  
Hang Liu
Keyword(s):  
Mechanical Properties ◽  
Asphalt Concrete ◽  
Steel Slag ◽  
Basalt Fiber ◽  
Crumb Rubber ◽  
Modified Bitumen ◽  
Porous Asphalt ◽  
Splitting Test ◽  
Porous Asphalt Concrete ◽  
Polymer Modified Bitumen

This paper studies the mechanical properties of porous asphalt concrete with styrene-butadiene-styrene (SBS) polymer modified bitumen as the binder, steel slag as the aggregate and crumb rubber and basalt fiber as modifiers. First, the appearance, mechanics, chemical composition and high-temperature stability of steel slag were studied by some equipment. Then, three kinds of porous asphalt concrete with SBS polymer modified bitumen as binder were produced, Namely, crumb rubber modified porous asphalt concrete (CR-PAC), basalt fiber modified porous asphalt concrete (BF-PAC), and basalt fiber and crumb rubber composite modified asphalt concrete (CM-PAC). Finally, the properties of the three kinds of modified PACs were studied through the Marshall test, freeze-thaw splitting test, low-temperature splitting test, permeability test, and creep test. The results showed that the crush value and abrasion value of steel slag are 15.1% and 13.5%, respectively; it has excellent strength and abrasion. In addition, the steel slag shows a porous structure and it provides an interface basis for a better bond with bitumen. For the three PACs, the results showed that the Marshall stability, water stability, and low-temperature crack resistance of CM-PAC are all the best Furthermore, CM-PAC has better rutting resistance than two single modified PACs, based on creep test results. The CM-PAC in this study can be used as a new type of pavement material.

PARTICULARITIES OF HOT-IN-PLACE RECYCLING WITH CHANGING THE ASPHALT CONCRETE MIXTURE AGGREGATE GRADATION

2018 ◽  
pp. 20-27
Author(s):  
Vasyl Nagaychuk ◽  
Sergii Illiash
Keyword(s):  
Layer Thickness ◽  
Asphalt Concrete ◽  
Recycled Aggregate ◽  
Concrete Mixture ◽  
Concrete Aggregate ◽  
Recycled Asphalt ◽  
Recycled Materials ◽  
Aggregate Gradation ◽  
Methods Of Calculation ◽  
Concrete Layer

The hot in-place recycling (HIR) belongs to the successful strategies of asphalt concrete pavements rehabilitation that provides effective elimination of such surface defects as cracking, rutting, stripping, raveling, and bleeding including defects caused by the non-conformity of asphalt concrete to the standard specifications. The HIR technologies are divided into four methods: «Reshape», «Repave», «Remix», and «Remix Plus». Among those methods, «Remix» and «Remix Plus» are more complicated technologically and are connected with changing the composition of existed (old) asphalt concrete. The composition of existed asphalt concrete should be corrected through the addition some of new components (aggregates, asphalt binder, rejuvenating agent, or new hot-mixed asphalt concrete mixture) to the hot-milled old asphalt layer. This article is dedicated to the methods of calculation of new and recycled aggregate mixture gradation regarding to the Ukrainian standards. The proposed methods of calculation consider such main peculiarities of HIR-recycled materials and layer design as: 1) old asphalt concrete, particularly its aggregate parts, can used in a non-fractioned form only; 2) HIR-recycled asphalt concrete layer should be designed with or without the maximal layer thickness restriction. The proposed methods also give the possibility to correct the technological process if the calculated amount of new material necessitated to the correction of old asphalt concrete aggregate grading does not allow to maintain the projected layer thickness. The implementation of the proposed technique of calculation of aggregate grading with and without restriction of the maximal thickness of recycled asphalt concrete layer allows enhance quality of recycled materials and promotes the entire adaptation of HIR technologies to the Ukrainian standards. Keywords: hot in-place recycling of asphalt concrete, «Remix», «Remix Plus», recycled asphalt concrete mixture, correction of aggregate gradation.

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