جستجوی مقالات مرتبط با کلیدواژه "composite pavement" در نشریات گروه "زیست شناسی"

Today, noise pollution is one of the most important environmental problems, which includes a significant share of noise pollution caused by transportation. Therefore, in the transportation engineering field, the issue of investigating the effect of pavement type on production or reduction of noise pollution caused by traffic is very important. For this purpose, this study was conducted to investigate the noise pollution resulting from vehicle traffic on composite pavements containing metal slag and copper slag. In this study, laboratory samples of composite pavement including roller concrete and chip seal with different percentages of steel and copper slag, 0%, 30%, 40%, and 50%, were made and tested for noise pollution produced by a British pendulum. The results of this study show that by increasing steel slag by 50% in concrete samples containing coarse and fine-grained chip seal granulation, the pavement noise number increases by 7.3 dB and 3.3 dB, respectively. Also, in composite pavement samples with coarse-grained and fine-grained chip seals, with the increase of copper slag by 50%, the pavement noise increases by 2.4 dB and 1.2 dB, respectively. In general, the type of granulation, as well as the use of copper and steel slag, has had a significant effect on increasing the sound produced.Today, noise pollution is one of the most important environmental problems, which includes a significant share of noise pollution caused by transportation. Therefore, in the transportation engineering field, the issue of investigating the effect of pavement type on production or reduction of noise pollution caused by traffic is very important. For this purpose, this study was conducted to investigate the noise pollution resulting from vehicle traffic on composite pavements containing metal slag and copper slag. In this study, laboratory samples of composite pavement including roller concrete and chip seal with different percentages of steel and copper slag, 0%, 30%, 40%, and 50%, were made and tested for noise pollution produced by a British pendulum. The results of this study show that by increasing steel slag by 50% in concrete samples containing coarse and fine-grained chip seal granulation, the pavement noise number increases by 7.3 dB and 3.3 dB, respectively. Also, in composite pavement samples with coarse-grained and fine-grained chip seals, with the increase of copper slag by 50%, the pavement noise increases by 2.4 dB and 1.2 dB, respectively. In general, the type of granulation, as well as the use of copper and steel slag, has had a significant effect on increasing the sound produced.Today, noise pollution is one of the most important environmental problems, which includes a significant share of noise pollution caused by transportation. Therefore, in the transportation engineering field, the issue of investigating the effect of pavement type on production or reduction of noise pollution caused by traffic is very important. For this purpose, this study was conducted to investigate the noise pollution resulting from vehicle traffic on composite pavements containing metal slag and copper slag. In this study, laboratory samples of composite pavement including roller concrete and chip seal with different percentages of steel and copper slag, 0%, 30%, 40%, and 50%, were made and tested for noise pollution produced by a British pendulum. The results of this study show that by increasing steel slag by 50% in concrete samples containing coarse and fine-grained chip seal granulation, the pavement noise number increases by 7.3 dB and 3.3 dB, respectively. Also, in composite pavement samples with coarse-grained and fine-grained chip seals, with the increase of copper slag by 50%, the pavement noise increases by 2.4 dB and 1.2 dB, respectively. In general, the type of granulation, as well as the use of copper and steel slag, has had a significant effect on increasing the sound produced.Today, noise pollution is one of the most important environmental problems, which includes a significant share of noise pollution caused by transportation. Therefore, in the transportation engineering field, the issue of investigating the effect of pavement type on production or reduction of noise pollution caused by traffic is very important. For this purpose, this study was conducted to investigate the noise pollution resulting from vehicle traffic on composite pavements containing metal slag and copper slag. In this study, laboratory samples of composite pavement including roller concrete and chip seal with different percentages of steel and copper slag, 0%, 30%, 40%, and 50%, were made and tested for noise pollution produced by a British pendulum. The results of this study show that by increasing steel slag by 50% in concrete samples containing coarse and fine-grained chip seal granulation, the pavement noise number increases by 7.3 dB and 3.3 dB, respectively. Also, in composite pavement samples with coarse-grained and fine-grained chip seals, with the increase of copper slag by 50%, the pavement noise increases by 2.4 dB and 1.2 dB, respectively. In general, the type of granulation, as well as the use of copper and steel slag, has had a significant effect on increasing the sound produced.Today, noise pollution is one of the most important environmental problems, which includes a significant share of noise pollution caused by transportation. Therefore, in the transportation engineering field, the issue of investigating the effect of pavement type on production or reduction of noise pollution caused by traffic is very important. For this purpose, this study was conducted to investigate the noise pollution resulting from vehicle traffic on composite pavements containing metal slag and copper slag. In this study, laboratory samples of composite pavement including roller concrete and chip seal with different percentages of steel and copper slag, 0%, 30%, 40%, and 50%, were made and tested for noise pollution produced by a British pendulum. The results of this study show that by increasing steel slag by 50% in concrete samples containing coarse and fine-grained chip seal granulation, the pavement noise number increases by 7.3 dB and 3.3 dB, respectively. Also, in composite pavement samples with coarse-grained and fine-grained chip seals, with the increase of copper slag by 50%, the pavement noise increases by 2.4 dB and 1.2 dB, respectively. In general, the type of granulation, as well as the use of copper and steel slag, has had a significant effect on increasing the sound produced.