Doped Road Of Ggbs Concrete Abrasion Resistance

With the increased of road transportation quantity year by year, the searious abrasion of the road ,debasing the using-effect , reducing the life of the road in using, in this case ,the requirement of the research about the high swear-resistant concrete becoming more and more important.This article through the massive laboratory test and the analysis on the basis of the ordinary requirement of the technical performances of the high way, systematic studied the factors,the requirement of materials,the Assessment method and standard and the using performance of the road which affected the abrasion-resistant concrete.The main research results are as following:Through the laboratory test of the factors which influent the abrasion-resistence of the granulometric distribution of the surface structure and the factors such as the finenessof the slag content of the slag,the quantity of the cement,the kinds and the maximum diameters of the aggregrate are discussed thoroughlythe wear-resisting of concrete was studied .and try to enhance the early-time abrasion resistance of the concrete which Impregnation with steel fibre and taking the new technics method in moulding.The investigation results showed :1) The early-time abrasion-resistant of slag concrete is strengthened with the increasing fineness of the slag,but decreased with the contenting ;2) The density of the surface structure in the slag concrete is the main reason to the abrasion-resistance ,the more dense,the more wear-resisting;3) the problem of below abrasion-resistance in early time ,and increases slowly in ate time decreasing existed in the concrete with 30% slag . reducing the water-cement ratio and the content of the slag can improve the flaw,and adding suitable quality of the cement and taking damp resreve can improve the abrasion-resisitance in late-time;4) take the the water-cement ratio of 0.42,20% slag content,and 30% SL can get the concrete with better abrasion-resistance,which below 3.6kg/m~2 can meet the requirement of design in high-way; 5) Taking the steel fibres and strengthen the surface structure can obviously improve the early time (7d)abrasion resisitance of the slag concrete,which can enhanced to 13.7%.