CGM bridge dedicated high-strength self-compacting mortar German New Asia 13311126842 CGM high-strength self-compacting mortar bridge dedicated German sub 13311126842 CGM new bridge dedicated high-strength self-compacting mortar German New Asia 13311126842 CGM bridge a special high-strength self-compacting mortar, CGM bridge special material Introduction high-strength self-compacting mortar, based on cement-based binders, high-strength materials (quartz sand or corundum) as an aggregate, combined with high flow, micro-expansion, anti-segregation and other substances from the preparation of gravity, from dense, high strength, non-shrink mortar. CGM bridge dedicated high-strength self-compacting mortar, is Henan Transportation Research Institute of Science and Technology Co., Ltd., Henan Province, traffic engineering reinforcement limited liability company, Beijing Sino-German New Asia Construction Co. tongue and groove joints for bridge Beam characteristics of the market in full Investigation, research, based on the joint development of a bridge dedicated gravity, from dense, high-strength, non-shrink grout mortar. Second, the material characteristics 1, the flow of gravity of greater than or equal 300mm, evenly diffused in perfusion flow freely. 2, since the tightness has good mobility, no bleeding, no segregation, no vibration, can rely on their own self-respect will infill vertical seams. 3, early strength and high early strength, 1d strength ≥20 Mpa, 3d strength ≥40 Mpa, 28 d strength ≥70 Mpa. Not only to meet the strength requirements of the old slab (C40), but also to meet the strength requirements of the new slab (C60). Shorten the construction period, the old slab, 24h after pavement construction can be carried out; the new slab, 48h after pavement construction can be carried out. 4, micro-expansion mortar expanders, enabling prevent mortar shrinkage and loss shrink sink paste, to prevent the hollowing phenomenon after reperfusion and effectively reduce bearing surface. 5, durability belong inorganic hybrid materials, corrosion and aging. The first study showed that: 200 million times fatigue test, 50 freeze-thaw environmental testing strength no significant change. 6, environmental non-toxic, harmless, non-corrosive steel, water quality and the surrounding environment pollution. Fourth, the technical requirements of note: 1 table performance test shall be the maximum amount of water required by the product; 2. CGM dedicated bridge for winter construction of high-strength self-compacting mortar 30min retention, expansion of the value of the 24h and 3h the difference is not required. 2, winter meet the technical requirements in addition to the technical requirements of Table 1. The maximum aggregate size, fluidity, compressive strength, chloride ion content, bleeding rate, we must also meet the provisions of Table 2. Table 2 winter CGM high-strength self-compacting mortar bridge dedicated technical requirements Temperature (℃) compressive strength ratio (%) R-7 R-7 + 28 R-7 + 56 -5 ≥20 ≥80 ≥90 -10 ≥12 Description : 1.R-7 indicates a negative temperature conservation specimen compressive strength value and the standard 7d conservation value of compressive strength ratio of specimen 28d of; 2.R-7 + 28, R-7 + 56 indicates a negative temperature curing 7d 28d and negative turn standard curing temperature curing 7d turn standard curing 56d compressive strength of the specimen and the standard curing compressive strength ratio of specimen 28d; and 3. A minimum temperature lower than the predetermined temperature 5 ℃. CGM bridge dedicated high-strength self-compacting mortar German New Asia 13311126842 CGM high-strength self-compacting mortar bridge dedicated German sub 13311126842 CGM new bridge dedicated high-strength self-compacting mortar German New Asia 13,311,126,842