- high temperature strength of grouting material change The main structure reinforcing selection of grouting material model

High temperature strength of grouting material type grouting grouting high strength grouting material experiments indicate that it is even higher than average relative strength of grouting material loss, about this requirement to choose the suitable grouting material model. About the performance of the powder containing silicon grouting material, more important is the high temperature burst will happen. This is in a relatively slow the rate of heating grouting material, let the grouting material temperature beyond about observed, it of the order of magnitude of heating rate is much lower than the temperature rise rate of fire. Silica powder, water cement ratio is 0 grouting material how many money a ton. 26 the grouting material experiments have confirmed that the blowout phenomenon. This may seem surprising, because the water content of very few, but on the other hand, the permeability coefficient is very low. The influence of water-cement ratio on splitting tensile strength loss is not obvious; Splitting tensile strength loss and compressive strength. Show time, 1 ~ 8 months) The length of the did not affect. In addition, the general Portland cement grouting materials and grouting of graining mixed with fly ash or blast furnace slag material also no difference in terms of relative strength loss. Grouting material applying stress and humidity conditions during heating is different; Teach at high temperatures to moment; Aggregate characteristics are different. So, it is difficult to have a consistent conclusion. In addition, to understand different conditions of showing the strength of the grouting material is also a must. Such as, in the fire to last a few hours at high temperature, heat flow is very big, most of the grouting material will be affected. But on the other hand, when using thermal lance cutting grouting material, as long as a few seconds in the heat of the moment, the heat flow is very small.