Effect of short-term rigidity on precast reinforced concrete beam of side stuck steel in compression zone;

This article interview a new style of composite slab,based on the comparing of a trial,found a correct finite element model,the influence of 2 parameters to the short-term rigidity of precast slab is analyzed,one is the axis distance between the top member and the bottom member,the other is the radius of web member.

The short-term rigidity formulas of RC beam with rectangular section and normal reinforcement in code for concrete structure design(GB50010—2002) are simplified,and by the linear regression to the short-term rigidity coefficient, the concise formulas are obtained.

A practical formula for calculating the short-term stiffness of reinforced concrete beams strengthened with carbon fiber sheet has been established on the basis of analyzing the regularity of changes in the sectional stiffness of these beams.

Influences of lightweight aggregate construction pre-treatment methods on construction property and long-term strength of high-strength lightweight aggregate concrete

Cemented paste backfill(CPB) mining is used worldwide and the long-term strength of the CPB is affected by the oxidation of sulphides contained in tailing sand material.

In order to research the rheological characteristics and long-term strength of Huangtupo landslide s deep slip band soil,the creep tests were carried out.