Existing asphalt bridge deck pavement is easy to construct and offers a greate traveling quality. However because of low bond ability between concrete and asphalt, they can easily separated from each other and finally cause cracks. So chloride ions percolating cracks make concrete deck deteriorate a...
Existing asphalt bridge deck pavement is easy to construct and offers a greate traveling quality. However because of low bond ability between concrete and asphalt, they can easily separated from each other and finally cause cracks. So chloride ions percolating cracks make concrete deck deteriorate and combine with a reinforcing steel. Corroding reinforcing steels by these combined chloride ions have bad effect on a structural durability. For this reason, to improve some problems caused by using asphalt bridge deck pavement many kind of high-performance concretes for bridge deck pavement like Latex Modified concrete are studied.
So in this study, to find out physical specific of high- performance concretes for bridge deck pavement, abrasion resistance and compression strength of some speciments made from nine mixtures are measured with this tendency. Each one is get by adding different kinds of and quantities of admixtures. Different percentages of added silicafume (0%, 3%, 5% and 9%.), three kinds of fiber (polypropylene fiber, cellulose fiber, polyvinyl alcohol fiber), flyash and slag mixing with fixed adding quantity of silicafume are parameters.
At the mixture added fiber usually used to low possibilities to take place plastic shrinkage cracks, not whether fiber exist but different kind of one can make different results from each other in abrasion resistance and compression strength test. It is considered that construction and dispersion of fiber in the concrete make differences among the results. Consequently, the reason why fiber have an effect on abrasion resistance and compression strength, considerable choice of used fiber is required.
Increasing added quantities of silicafume from 0% to 5%,, abrasion resistance and compression strength are also increased similarly, but there's no longer specific changes over 5%. Therefore, economically the quantity of 5% of added silicafume is suitable to increase abrasion resistance.
Finally, add each slag and flyash to mixture fixed quantity of 5%. The changes of these different kind of added admixtures also offer different result. From the result of this test, it can be analogized that if improving abrasion resistance is required, adding silicafume only is appropriated, but additionally increasing compression strength including rising abrasion resistance is required, adding silicafume and slag is more suitable.
Existing asphalt bridge deck pavement is easy to construct and offers a greate traveling quality. However because of low bond ability between concrete and asphalt, they can easily separated from each other and finally cause cracks. So chloride ions percolating cracks make concrete deck deteriorate and combine with a reinforcing steel. Corroding reinforcing steels by these combined chloride ions have bad effect on a structural durability. For this reason, to improve some problems caused by using asphalt bridge deck pavement many kind of high-performance concretes for bridge deck pavement like Latex Modified concrete are studied.
So in this study, to find out physical specific of high- performance concretes for bridge deck pavement, abrasion resistance and compression strength of some speciments made from nine mixtures are measured with this tendency. Each one is get by adding different kinds of and quantities of admixtures. Different percentages of added silicafume (0%, 3%, 5% and 9%.), three kinds of fiber (polypropylene fiber, cellulose fiber, polyvinyl alcohol fiber), flyash and slag mixing with fixed adding quantity of silicafume are parameters.
At the mixture added fiber usually used to low possibilities to take place plastic shrinkage cracks, not whether fiber exist but different kind of one can make different results from each other in abrasion resistance and compression strength test. It is considered that construction and dispersion of fiber in the concrete make differences among the results. Consequently, the reason why fiber have an effect on abrasion resistance and compression strength, considerable choice of used fiber is required.
Increasing added quantities of silicafume from 0% to 5%,, abrasion resistance and compression strength are also increased similarly, but there's no longer specific changes over 5%. Therefore, economically the quantity of 5% of added silicafume is suitable to increase abrasion resistance.
Finally, add each slag and flyash to mixture fixed quantity of 5%. The changes of these different kind of added admixtures also offer different result. From the result of this test, it can be analogized that if improving abrasion resistance is required, adding silicafume only is appropriated, but additionally increasing compression strength including rising abrasion resistance is required, adding silicafume and slag is more suitable.
주제어
#abrasion resistance
#high-performance concrete
#bridge deck pavement
#silicafume
#교면포장
#콘크리트 포장
#교면포장용 고품질 콘크리트
#마모저항
※ AI-Helper는 부적절한 답변을 할 수 있습니다.