Welcome to Lanxi city 3D art decoration component Co., ltd.!
Welcome to Lanxi city 3D art decoration component Co., ltd.!
GRC has to bear the long-term sustained loading, the creep characteristics similar to other cement based materials, in under sustained load the initial elastic deformation with small creep deformation, with the time of numerical increase Xu decrease of strain rate, that is, from 100 hours to 1000 hours Xu Bianda the occurrence of approximately equal from 10 hours to 100 hours of creep. When in full water samples of GRC applied load and found that this exception to the general rule, in the early hours of the full sample water loading observed large creep deformation, and the creep rate similar to other environmental materials under creep in Figure 5 is a water saturated samples in below the bend of the yield force under the condition of typical creep curve. In dry conditions, initial creep large and close to full of water samples in the post creep, bending creep or direct tensile creep and early should become proportional, substantially less than water changes caused by expansion strain and shrinkage strain.
Like most materials, GRC with temperature increasing expansion, often inflated values may be due to the GRC heating water loss caused by contraction phase offset, thermal and moisture change with time related and complicated relation, depending on the conditions such as moisture content. Thermal expansion and contraction by substrate properties governed mainly by the density, sand content, sand ratio control, in the design of GRC components should consider thermal expansion characteristics, should determine each GRC formula of thermal expansion characteristics.