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خلاصه
جاده اي كه با آسفالت رنگي سنگ فرش شده باشد مي تواند به همان اندازه كه امنيت و يكنواختي رانندگي را بهبود مي دهد مجموعه ديدني بهتري ايجاد كند. در اين تحقيق، نمونه هاي آسفالت رنگي به همراه مقادير مختلف رنگ براي مطالعه تغييرات رنگ سطح در دوره هاي مختلف افزايش طول عمر، بررسي مي شوند. توضيح رنگ هاي سطح در نمونه ها در فضاهاي رنگي HIS و RGB بررسي مي شوند. دو نوع رنگ، سبز و قرمز، با 5 نسبت مختلف با آسفالت روشن براي ساخت نمونه هاي آسفالت رنگي تركيب مي شوند. نمونه ها براي 5 دهانه مختلف قديمي در دستگاه آزمايش QUV در معرض نور ماوراء بنفش قرار مي گيرند. نتايج نشان مي دهد كه مقدار و نوع رنگ افزوده شده و دهانه هاي مختلف قديمي بر محوسازي آسفالت رنگي تأثير مي گذارد. همچنين نتايج نشان مي دهد كه آسفالت روشن به همراه % 5 يا بيشتر رنگ قادر به ساخت آسفالتي است كه بهتر رنگ شده است. سرانجام، آسفالت رنگي به همراه رنگ قرمز مقاومت بهتري را در مقابل نور ماوراء بنفش نشان داد.
مقدمه
آسفالت رنگي در زندگي روزمره كاربردهاي مختلفي دارد. Moxon آسفالت رنگ روشن را براي سطح سد در فرانسه به كار برد. آسفالت رنگي از طريق منعكس كردن نور ماوراء بنفش از سطح به عنوان روپوش آب بند گرم به كار مي رود، بنابراين در نور ممتد خورشيد دما را 5 تا c ْ 10 كاهش مي دهد.

Abstract

Colored asphalt pavement can create better visual setting as well as improve the safety and smoothness of driving. In this
research, colored asphalt samples with various amounts of dye are examined to study the surface color changes at different aging
periods. Distributions of surface colors on the samples are analyzed in both the RGB and HSI color spaces. Two types of dyes,
green and red, with five different ratios are mixed with clear asphalt to make colored asphalt samples. The samples are exposed
to ultraviolet light in the QUV tester for five different aging spans. Results show that the amount and type of dye added, and the
different aging spans affect fading in the colored asphalt. Results also indicate that clear asphalt mixed with 5% or more of dye
is capable of manufacturing better-colored asphalt. Finally, colored asphalt with red dye showed better resistance to ultraviolet
light.

2004 Elsevier Ltd. All rights reserved.
Keywords: Colored asphalt pavement; QUV test; Image analysis
1. Introduction
Color asphalt has been applied in different usages
related to daily life. Moxon w1x applied light colored
asphalt, Mexphalt CP2 made by Shell, to the surface of
a dam in France. The colored asphalt works as a heat
shield by reflecting ultraviolet light from the surface,
thus lowering the temperature by 5–10 8C in prolonged
sunlight. In order to improve the safety of bicycle-motor
vehicle crossings in America, the city of Portland selected
10 conflict areas to pave with paint and blue
thermoplastic as the colored pavement and employ a
novel signage system. Results show that the overwhelming
majority of cyclists as well as a majority of motorists
surveyed felt the colored pavement enhanced the safety
of crossings (Hunter et al. w2x). Smith w3x discovered
that interlocking color concrete pavements offer many
options for applications in both architecture and engineering.
He also noted that colored pavements could
*Corresponding author. Tel.: q886-7-6577711x3320; fax: q886-
7-6577461.
E-mail addresses: dflin@isu.edu.tw (D.-F. Lin),
hlluo@isu.edu.tw (H.-L. Luo).
potentially lower the cost of maintenance and effectively
resist deterioration due to deicing salts.
In Taiwan, asphalt concrete pavement is dominantly
paved in the local and providential highways. These
pavements were constructed primarily in the series of
black color and hence make cities look monotonously.
Development of colored asphalt pavement would not
only create cities with colorful outlook but also improve
the safety of driving. Currently, the application of these
pavements has been applied mainly to the parking areas,
scenic routes, parks, and other important governmental
units. However, fading of the colored asphalt pavement
caused by the climate and other factors is commonly
seen in both the construction and usage of pavement.
This fading of color will result in the loss of beauty in
the pavement and the repaving of the surface. Consequently,
this will increase the cost of maintenance of
pavement, which is contrary to the original intention of
the colored asphalt. For some cases, its color faded
seriously within 1 year. Since demands in colored
asphalt are high, and in response to improvements of
living standard in Taiwan, governmental agencies have
planned a number of projects for colored asphalt paveاین مقاله کامل که در 10 صفحه ترجمه شده و به همراه متن اصلی عرضه می شود و در ضمن متن اصلی در 7صفحه می باشد.