| Autor: |
R Taha, H F Hassan, A Al-Awaid, M Al-Shahri |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Performance of Bituminous and Hydraulic Materials in Pavements ISBN: 9780203743928 |
| DOI: |
10.4324/9780203743928-30 |
| Popis: |
Road rehabilitation and reconstruction generate large supplies of reclaimed asphalt pavement (RAP) aggregate. Recycling into asphalt paving mixtures is the predominant application. Cement by-pass dust (CBPD) or cement kiln dust (CKD) is a by-product material generated during the production of Portland Cement. This study investigated the potential use of CBPD-stabilized RAP and RAP/virgin aggregate mixtures in road bases. Compaction and unconfined compressive strength tests were conducted on RAP/virgin aggrgate blends with different percentages. Specimens were cured for 3, 7 and 28 days. A CBPD content of 15% seems to be the optimum for achieving maximum strength. The optimum moisture contents for those blends stabilized using up to 7% CBPD are higher than those stabilized using 10-20% CBPD. Pavement design undertaken for the different combinations of CBPD-stabilized RAP/virgin aggregate indicated that with the increase of CBPD or virgin aggregate contents, a lower base thickness is required. For the covering abstract see ITRD E117840. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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