Evaluation and Comparison of the Properties of Asphalt Concrete Containing Recycled Brick and Glass Powder as Filler
Author(s):
Message:
Abstract:
In recent years, the economy and sustainability are considered together in construction projects. One measure that can be done in this regard is partial or full replacement of construction materials by recycled waste materials. A large volume of waste materials are produced annually from construction and demolition of civil projects. On the other hand, the construction projects consume a large amount of natural resources. Replacing the virgin materials by recycled materials, while the properties is maintained or improved, is an ecosustainable measure. In this research, the viability of using two types of recycled construction and demolition waste materials, namely glass and brick, as powder in asphalt concrete has been evaluated. The natural filler, as control, has been replaced in different percentages 25, 50, 75 and 100%), with the recycled materials, and the mixtures have been evaluated in terms of, marshal stability, flow, indirect tensile strength, moisture damage and volumetric characteristics. The results show that, the marshal stability increases, and the flow decreases by replacing the natural filler with brick powder. However, except for 100% of replacement, replacing the natural filler with glass powder, results in a higher Marshal quotient, indicating a better strength against deformation. Also, the results show that, at both 25 and 40˚C, the indirect tensile strength of asphalt concrete increases with increasing the replacement by brick powder. However, although the indirect tensile strength is improved at 25˚C, by 25% of replacing the natural filler with the glass powder; however, at 40˚C, the indirect tensile strength decreases with increasing the replacement with glass powder. The tensile strength ratio, which is an indicator for moisture damage, is increased with increasing the brick powder content, and increased until 50% of replacement with glass powder, beyond which starts to decrease. It is also found that, the brick powder does not influence the air voids in mixture, and the voids in mineral aggregates. However, the air voids content increases, and the voids in mineral aggregates decreases with increasing glass powder content.
Language:
Persian
Published:
Journal of Transportation Research, Volume:12 Issue: 2, 2015
Page:
157
magiran.com/p1439097  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!