环境腐蚀因素对混凝土桥梁结构性能起到降低或破坏作用，成为影响混凝土桥梁

Environmental factors serve to reduce corrosion or destructive effect on the structural performance of concrete bridges, to become the dominant factor affecting the durability of concrete bridges. Practice shows that a large number of domestic and foreign, the corrosion of the concrete environment to produce various diseases: carbonation, chloride ion attack, alkali-aggregate reaction, steel corrosion, freezing and thawing damage, salt efflorescence, and other damage, thus reducing the impact durability of concrete bridges. The practice and research studies have shown that the porous cement mortar, its chemical and physical properties, low tensile strength and brittle to bring the surface microcracks concrete is a key factor in the disease. Thus combating diseases concrete, to protect the durability of concrete structure, the concrete from the fine closed pores, and the pore capillary transport pathway water blocking shield corrosive media (liquid water, chloride ions, oxygen, carbon dioxide, an acidic salt, etc.) and corrosion mitigation terms of the rate of diffusion media and other aspects, when effective, easy, cheap, and easy method for prevention and Control of. According to this idea, we research and development of a concrete special protective new materials, design a "concrete special anti Shanghai material system", and applied to the joint venture to undertake hundreds of bridges, guardrails, curbs governance and protection works have achieved remarkable results . On this basis, we introduce international advanced quantum chemistry and micro and nano technology, further research and development of new special protective material, design form of this manual, "Shanghai water-based paint for concrete proof system."

Environmental corrosion factors play a role in reducing or destroying the structural properties of concrete bridges and becoming the dominant factors affecting the durability of concrete bridges. A large number of practices at home and abroad show that environmental corrosion causes various diseases of concrete: carbonation, chlorine ion erosion, alkali aggregate reaction, rebar rusting, frost melting damage, salt damage and pan-alkali, which affect slower the durability of concrete bridges. According to the research practice and research, the porousnature of cement glue, its chemical and physical characteristics, low tension strength and brittleness brought about by surface micro-cracks are the key factors of concrete disease. Therefore, the prevention and control of concrete diseases, to ensure the durability of concrete structure, from the closed concrete micropores, blocking the water pores and capillary transmission path, shielding corrosion media (liquid water, chloride ions, oxygen, carbon dioxide, acidsalt, etc.) and slowing the diffusion of corrosion media, etc. Easy prevention and control ideas and methods. According to this idea, we have developed a new material for concrete special protection, designed a "concrete special anti-Shanghai material system", and applied to the cooperative enterprises to undertake hundreds of bridges, guardrails, edge stone management and protection works, achieved remarkable results. On this basis, we introduce international advanced quantum chemistry and micro-nanotechnology, further research and development of special protective new materials, design the formation of this manual "concrete special anti-Shanghai water paint system."

Environmental corrosion factors play a role in reducing or destroying the structural performance of concrete bridges, and become the leading factor affecting the durability of concrete bridges. A large number of practices at home and abroad have shown that environmental corrosion causes various diseases of concrete: carbonation, chloride ion corrosion, alkali aggregate reaction, steel corrosion, freeze-thaw damage, salt damage and pan alkali, thus affecting the durability of concrete bridges. According to research practice and research, the porosity of cement mortar, its chemical and physical properties, low tensile strength and surface micro cracks caused by brittleness are the key factors of concrete diseases. Therefore, it is an effective, simple, economic and easy way to prevent and control concrete diseases and ensure the durability of concrete structure by sealing the micro pores of concrete, blocking the pores of water and capillary transmission channels, shielding the corrosive medium (liquid water, chloride ion, oxygen, carbon dioxide, acid salt, etc.) and slowing down the diffusion speed of corrosive medium. According to this idea, we have researched and developed new concrete special protection materials, designed "concrete special anti Shanghai Material System", and applied it to hundreds of bridge, guardrail, curb treatment and protection projects undertaken by cooperative enterprises, and achieved remarkable results. On this basis, we introduce international advanced quantum chemistry and micro nano technology, further research and development of special protective new materials, design the "special anti Shanghai water-based paint system for concrete" of cost manual.