A new type of inorganic anchoring material is developed as a substitution for anchoring adhesive to overcome some imperfections in the process of planting reinforcing steel bar.The mix proportion of the anchoring material is determined by experiments.The compressive strength

adhesive force to concrete

volume stability and anchoring force with steel bar are studied.The early strength of the anchoring inorganic material is quite high: for 1d up to 38.5MPa and 3d up to 60MPa.It is a good adhesive to concrete and the adhesive strength of 28d is about 2MPa.The anchoring material will have tiny volume expansion with the age

which is beneficial to enhancing the anchoring force.The essential component of the inorganic anchoring material is cement-based material

so some defects of the organic macromolecular material can be avoided

such as poor stability and requirement for vigorous construction conditions.Its characteristics in early strength

adhesive force to concrete and volume expansion can satisfy the requirement of the construction to the planting reinforcing steel bar and the loading force

thus it can be used as a substituting material for anchoring adhesive.