Abstract:Research purposes: The introduction was given to the current applicable situation of the epoxy resin mortar and aiming at the problem of the poor coherence of the cohering surface caused by the toxicity of the auxiliary materials like epoxy resin curing agent and the contraction of the epoxy resin,the study was done on the selection of the raw materials,formulating of recipe and the various properties of the epoxy resin mortar for the purpose of finding out the low toxic,low contracting and high cohering strength epoxy resin mortar that was available for the planting reinforcement bar.
Research conclusions: ( 1) The selection of the curing agent and the other auxiliary agents used in the epoxy resin mortar is crucial to cutting the toxicity of the epoxy resin mortar,especially the curing agent has more impact on the toxicity of the mortar. ( 2) Adding the appropriate amount of cements and sands can obviously reduce the contraction of the resin to avoid the crack of the cohering surface. ( 3) The cohering strength of new - type low toxic epoxy resin mortar can reach at the 20 MPa for one day,the cohering strength after 3 days can meet the design requirement of planting reinforcement bar and its final strength can reach at 60 MPa with the contraction rate of about 0. 3%. ( 4) When the planting depth of the smooth round reinforcement bar is not lees than 15 times of the reinforcement bar diameter and the planting depth of the screw thread reinforcement bar is not less than 10 times of the reinforcement bar diameter,the drawing force can yield the reinforcement bar,so it has perfect applicable value in the planting reinforcement bar engineering.
何小刚. 新型环氧树脂砂浆在公路工程植筋中的应用[J]. 铁道工程学报, 2012, 29(7): 62-66.
HE Xiao - gang. Application of New - type Epoxy Resin Mortar in Planting Reinforcement Bar of Highway Engineering. 铁道工程学报, 2012, 29(7): 62-66.