Effect of Modified Asphalt Cement of the Performance of Stone Matrix Mixtures
This research investigates the behavior of Stone Matrix Asphalt mixtures (SMA) modified with styrene-butadiene-styrene (SBS) polymer at four percentages (1, 2, 3 and 4%) by weight of asphalt cement. The moisture susceptibility and rutting were taken into consideration in this study. To achieve the o...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Unviversity of Technology- Iraq
2020-05-01
|
| Series: | Engineering and Technology Journal |
| Subjects: | |
| Online Access: | https://etj.uotechnology.edu.iq/article_168962_0ec1bb80cdfdda378492c6b2b7bc0c7b.pdf |
| _version_ | 1797336450693332992 |
|---|---|
| author | Duaa Khalaf Zaynab Qasim Karim Al Helo |
| author_facet | Duaa Khalaf Zaynab Qasim Karim Al Helo |
| author_sort | Duaa Khalaf |
| collection | DOAJ |
| description | This research investigates the behavior of Stone Matrix Asphalt mixtures (SMA) modified with styrene-butadiene-styrene (SBS) polymer at four percentages (1, 2, 3 and 4%) by weight of asphalt cement. The moisture susceptibility and rutting were taken into consideration in this study. To achieve the objective of this research the superpave system is conducted to design the asphalt mixtures. The physical properties of aggregate, bitumen and other mix materials were assessed and evaluated with the laboratory tests. The mixtures were prepared using penetration Graded (40-50) bitumen and a chemical named Polypropylene Fibers was used as a stabilizing additive. Fibers have been used in SMA mixtures for two main reasons: To increase the toughness and fracture resistance of hot mix asphalt (HMA) and to act as a stabilizer to prevent drain down of the asphalt binder. The laboratory tests include indirect tensile strength test, Marshall stability and retained Marshall Stability test (RMS). For rutting test the Roller wheel compactor is used for preparing the asphaltic samples and Wheel tracking device is used to evaluate the rutting of asphaltic slabs. The results showed that the SBS polymer asphalt mixture gave better moisture sensitivity and better fracture resistance according to the study.It is noted that indirect tensile strength ratio (TSR) increases by 93.1 % and the rut depth decreases by 32.5 % when adding 3% SBS polymer to SMA |
| first_indexed | 2024-03-08T08:53:36Z |
| format | Article |
| id | doaj.art-a15497ed01374ccfb36989a53c4d389a |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T08:53:36Z |
| publishDate | 2020-05-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-a15497ed01374ccfb36989a53c4d389a2024-02-01T07:32:53ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582020-05-01385A78980010.30684/etj.v38i5A.489168962Effect of Modified Asphalt Cement of the Performance of Stone Matrix MixturesDuaa Khalaf0Zaynab Qasim1Karim Al Helo2Civil Engineering Dep., University of Technology, Baghdad, Iraq.Civil Engineering Dep., University of Technology, Baghdad, Iraq.Civil Engineering Dep., University of Technology, Baghdad, Iraq.This research investigates the behavior of Stone Matrix Asphalt mixtures (SMA) modified with styrene-butadiene-styrene (SBS) polymer at four percentages (1, 2, 3 and 4%) by weight of asphalt cement. The moisture susceptibility and rutting were taken into consideration in this study. To achieve the objective of this research the superpave system is conducted to design the asphalt mixtures. The physical properties of aggregate, bitumen and other mix materials were assessed and evaluated with the laboratory tests. The mixtures were prepared using penetration Graded (40-50) bitumen and a chemical named Polypropylene Fibers was used as a stabilizing additive. Fibers have been used in SMA mixtures for two main reasons: To increase the toughness and fracture resistance of hot mix asphalt (HMA) and to act as a stabilizer to prevent drain down of the asphalt binder. The laboratory tests include indirect tensile strength test, Marshall stability and retained Marshall Stability test (RMS). For rutting test the Roller wheel compactor is used for preparing the asphaltic samples and Wheel tracking device is used to evaluate the rutting of asphaltic slabs. The results showed that the SBS polymer asphalt mixture gave better moisture sensitivity and better fracture resistance according to the study.It is noted that indirect tensile strength ratio (TSR) increases by 93.1 % and the rut depth decreases by 32.5 % when adding 3% SBS polymer to SMAhttps://etj.uotechnology.edu.iq/article_168962_0ec1bb80cdfdda378492c6b2b7bc0c7b.pdfstone matrix asphalt smasbs polymermodified asphaltmoisture susceptibilityand rutting |
| spellingShingle | Duaa Khalaf Zaynab Qasim Karim Al Helo Effect of Modified Asphalt Cement of the Performance of Stone Matrix Mixtures Engineering and Technology Journal stone matrix asphalt sma sbs polymer modified asphalt moisture susceptibility and rutting |
| title | Effect of Modified Asphalt Cement of the Performance of Stone Matrix Mixtures |
| title_full | Effect of Modified Asphalt Cement of the Performance of Stone Matrix Mixtures |
| title_fullStr | Effect of Modified Asphalt Cement of the Performance of Stone Matrix Mixtures |
| title_full_unstemmed | Effect of Modified Asphalt Cement of the Performance of Stone Matrix Mixtures |
| title_short | Effect of Modified Asphalt Cement of the Performance of Stone Matrix Mixtures |
| title_sort | effect of modified asphalt cement of the performance of stone matrix mixtures |
| topic | stone matrix asphalt sma sbs polymer modified asphalt moisture susceptibility and rutting |
| url | https://etj.uotechnology.edu.iq/article_168962_0ec1bb80cdfdda378492c6b2b7bc0c7b.pdf |
| work_keys_str_mv | AT duaakhalaf effectofmodifiedasphaltcementoftheperformanceofstonematrixmixtures AT zaynabqasim effectofmodifiedasphaltcementoftheperformanceofstonematrixmixtures AT karimalhelo effectofmodifiedasphaltcementoftheperformanceofstonematrixmixtures |