Cement base high-strength non-shrink grout material secondary grouting of poor maintenance problems

High-strength non-shrink grout material secondary grouting CGM high-strength non-shrinkage grouting material, concrete, cement grouting material maintenance maintenance, cement products maintenance. After secondary pouring of cement-based grout material if not properly maintained, often appear the following problems: 1, lack of strength of cement grouting material 2, when the strength of the concrete grouting material to carry out the gelling material hydration, and gelling material hydration have close connection with the environment. Only in the appropriate temperature and wet environment, talents well hydrated gel data, the strength of the concrete grouting material talent to get better. If cannot maintain, extremely well in low temperature environment, gelling material hydration speed slowed significantly, making the strength of the concrete grouting material to carry out slowly, in a dry environment, concrete grouting guess lose a lot of water, makes the gelling material does not meet water of hydration reaction, will also affect the strength of the concrete grouting material. Therefore, when maintenance is not good, although manufacturing high strength concrete grouting materials, but also the practice of concrete grouting material strength may be low, could not reach the requirements of planning. 3, cracks under the influence of environment, concrete grouting material deformation will attack. When the deformation of concrete grouting material is restricted, will constitute the internal stress in the concrete grouting guess. Because the elastic modulus of concrete grouting material information is bigger, tiny deformation may constitute appropriate internal stress. However, the concrete grouting material tensile function is lower. When concrete grouting material in tension, concrete grouting material is easy damaged, constitute cracks. In the natural environment, the deformation of concrete grouting material is often shortened, and shorten the deformation of concrete grouting material is concrete grouting material in tension, thus, a simple attack cracks. New pouring concrete grouting material has the following characteristics: 1, the low strength concrete grouting material in casting after a period of time appropriately, because just a structure, the structure is very safe, easy damage. Therefore, new pouring concrete grouting material strength is very low. This means that the concrete grouting material against various stress effect can be very weak. 2, very big humidity just pouring concrete grouting material, can thoroughly in a saturated condition, form the larger humidity difference to the environment. And because the gel material of hydration degree is low, the chemical combined water and less glue, coagulation and capillary water more. Thus, a new pouring concrete grouting material is simple water loss, and in the same environment conditions water loss is bigger, bigger shorten simple attack. 3, unsafe temperature new pouring concrete grouting material is in the midst of the gelled material a lot during hydration, gelling material hydration reaction is an exothermic reaction, a lot of hydration will be accompanied by a lot of heat, thus may cause the temperature of the concrete grouting material is bigger change. New pouring concrete grouting these characteristics led to the concrete grouting material deformation and internal stress, simple and easy craze, maintenance is invented a better air, reduce environmental and concrete grouting materials, the present situation of distance concrete grouting material progress against various deformation ability, to minimize the deformation of concrete grouting material, reduce internal stress, avoid cracking of concrete grouting material. Conversely, not for good maintenance, concrete crack grouting material is simple. Of which is to maintain the attack another picture, also is the most common fantasy. 4, appearance pulverization on the one hand, gelling material hydration needs water, on the other hand, the new pouring concrete grouting materials and environmental humidity larger difference between the concrete grouting guess simple water transpiration and lost to the environment. Therefore, after the new pouring concrete grouting material environment and gelling exist over a period of time information for water rob. In this kind of plunder, if the environment of the advantages of concrete grouting guess a lot of water lost to the environment, there is not enough water for hydration gel materials were, appearance of concrete grouting material reflects similar to the water loss of clay hardening, instead of hydration hardening.