Abstract: A beam-slab integrated prefabricated waffle slab structure and a construction method thereof are provided, the structure includes columns, arranged in an array, and a beam and slab support element and a beam support element being disposed on each column; two ends of each prefabricated frame beam being respectively disposed on the beam support elements, a main support element being disposed on front and rear sidewalls of each prefabricated frame beam; prefabricated waffle beam-slab units, each disposed between the prefabricated frame beams.

Abstract: A reinforced concrete composite beam structure based on precast concrete beam-slab integrated units include rib beams and rebar cages; stirrups in the rib beams are closed stirrups; upper parts of the closed stirrups in each rib beam are extended from the rib beam and taken as connecting rings; the rebar cages are disposed on upper parts of two connected rib beams; the connecting rings are lapped with beam surface closed stirrups to form the reinforced concrete composite beam structure with the rib beams after casting concrete. Its construction method includes: installing the precast concrete beam-slab integrated units; hoisting the rebar cages on the rib beams to tie two corresponding connecting rings with the corresponding beam surface closed stirrup in a staggered and overlapped manner; and casting concrete to submerge the rebar cages. A form of the closed stirrups is proposed when rib width of the rib beams is small.

Abstract: An apparatus for testing the load bearing strength of an architectural structure includes a top holding assembly, a hydraulic cylinder, a bottom holding assembly, and a bracing member. The hydraulic cylinder is disposed below the top holding assembly, and has a top end. The bottom holding assembly is mounted on the top end of the hydraulic cylinder, and cooperates with the top holding assembly to hold the architectural structure therebetween. The bottom holding assembly includes a peripheral wall. The bracing member has a plurality of bracing rollers disposed around and slidably abutting against the peripheral wall of the bottom holding assembly so as to absorb lateral horizontal stress which may occur during the testing of the architectural structure under compression.

Abstract: An apparatus for testing the load bearing strength of an architectural structure includes a top holding assembly, a hydraulic cylinder, a bottom holding assembly, and a bracing member. The hydraulic cylinder is disposed below the top holding assembly, and has a top end. The bottom holding assembly is mounted on the top end of the hydraulic cylinder, and cooperates with the top holding assembly to hold the architectural structure therebetween. The bottom holding assembly includes a peripheral wall. The bracing member has a plurality of bracing rollers disposed around and slidably abutting against the peripheral wall of the bottom holding assembly so as to absorb lateral horizontal stress which may occur during the testing of the architectural structure under compression.

Abstract: To provide a high ductility to tensile load and compressive load and to enhance workability, the present invention provides a high performance fiber reinforced cementitious composition comprising fragments of a steel cord stranded wire accounting for 0.5 vol % or more and less than 1.5 vol % and fragments of at least one type of organic fibers accounting for 2.5 vol % or less.

Abstract: To provide a high ductility to tensile load and compressive load and to enhance workability, the present invention provides a high performance fiber reinforced cementitious composition comprising fragments of a steel cord stranded wire accounting for 0.5 vol % or more and less than 1.5 vol % and fragments of at least one type of organic fibers accounting for 2.5 vol % or less.

Abstract: The extrusion moldability of particle-reinforced composites under fresh cition relative to the extruding pressure and extruding velocity can be pre-estimated from the cohesion and the coefficient of internal friction of the composite which can be calculated from the relationship of, when a frame divided into the upper and lower halves are filled with the composite and the upper and lower halves of the frame are displaced relative to each other in the horizontal direction under a pressure on the composite filling the frame, the shear stress of the composite against slip deformation.

Abstract: An apparatus for performing a weather resistance test on a composite material having a metallic, inorganic, or organic base member, and an organic material covering the base member. The apparatus includes a sample holding device disposed in a sample chamber for holding a sample of the composite material. An artificial light source irradiates light substantially in the ultraviolet light area to one surface of the sample. A dipping mechanism dips the sample in a corrosive ionized water, and dew condensation is formed through a temperature control device disposed in the sample holding device, working with a moisture source, for causing dew condensation in the surface of the sample. A cleaning device is provided for cleaning the surface of the sample, and steaming of the sample is performed through the use of a heating element disposed in the sample chamber, and the moistening means, for steaming the sample in an atmosphere of high temperature and high humidity.

Abstract: An improved thermopile is provided. A plurality of thermocouples constituting the thermopile are composed of segments of one metal and segments of the other metal, and the segments of different metals are connected to one another alternately so that the thermocouples are arranged in series on a heat-resistant, electrically non-conductive substrate. Each segment has a portion plated on one surface of the substrate, a portion plated on the other surface of the substrate and a portion plated on the inner wall of through holes formed in the substrate to connect the two portions plated on the two surfaces of the substrate with each other. The thermopile is prepared advantageously by utilizing plating and photo-etching techniques.