Cement concrete grouting material pavement so three categories - The grouting material block specifications

grouting grouting material specifications grouting material prices by the longitudinal, transverse and oblique cracks occurring in the course of development has completely broken into more than two pieces of cement concrete grouting material pavement slab, known as so, is characterized by crack runs through the whole board face and bottom. Oblique crack perpendicular to the bottom, from the Angle to the end of the crack two interval is equal to or less than half the length of the edge is called voids superfine grouting material to crack. Concrete grouting material pavement slab casting, after the completion of incomplete hardening or open the traffic of so called so early days or so during the construction. Concrete grouting material after the open road traffic could present so called so late or so. Cement concrete grouting material pavement so rate is completely broken into more than two pieces of cement concrete grouting material pavement plate number and the ratio of the total number of fast road plate, to show that percentage. So a grouting material, cement concrete pavement is divided into three categories according to its damage level 1, minor cracking; Fracture without fall off or slight fall off; There is no crack closure of the crack width is less than 3 mm; Has joint sealing cracks, no fall off or slight fall off, but joint sealing is good. 2, secondary cracking; Cracks have moderate fall off; There is no crack of joint sealing width is 3 ~ 25 mm; Has joint sealing cracks, no fall off or slight fall off, but the caulking materials significant damage; Plate is divided into three pieces of less than, still belongs to the secondary cracks. 3, serious cracking; Cracks have moderate fall off; There is no crack of joint sealing width is greater than 25 mm; Plate is divided into 3 fast, crack damage in medium degree or above; There are wrong, split block has start activities. Second, according to the so form and can be divided into two categories, so horizontal and vertical so building materials pointed out; The cracking of concrete grouting material plate is substandard LuWuHan grouting material manufacturers face problems, should be reinforced high strength grouting material prices are not allowed to present, most of the construction units for rework processing. But according to the foreign information, a single so it is difficult to avoid. And regulations, the cracking of concrete grouting material plate blocks, express company and first class road section shall not exceed the rating concrete grouting material always blocks 0. Shall not exceed 0 2%, other road. 4%, about cracking board dealt with appropriate measures should be taken.