摘要:
The invention relates to a light-weight load-bearing structure, reinforced by core elements (2) of a strong material constituting one or more compression or tension zones in the structure to be cast, which core (2) is surrounded by or adjacent to a material of less strength compared to the core (2), where the core (2) is constructed from segments (1) of core elements (2) assembled by means of one or more prestressing elements (4). The invention further relates to a method of casting of light-weight load-bearing structures, reinforced by core elements (2) of a strong material constituting one or more compression or tension zones in the structure to be cast, which core (2) is surrounded by or adjacent to a material of less strength compared to the core (2), where the core (2) is constructed from segments (1) of core elements (2) assembled and hold together by means of one or more prestressing elements (4).
摘要:
A casting guide and a method of making a concrete pile using the casting guide, the casting guide including a casting guide end plate, at least two lock rod forms including a first set of crosswise through-holes, and at least two lock socket forms including a second set of crosswise through-holes. The first and second sets of crosswise through-holes configured to removably receive a casting guide pin extending substantially across the casting guide end plate and interconnecting the crosswise through-holes the lock rod forms or lock socket forms when the casting guide is inside a casting chute.
摘要:
A column comprising courses of building blocks such as bricks is arranged with the long axis of each block parallel to the axis of the column and filled with a substrate such as concrete with an axial structural member. The column may be produced with the aid of a cage including spaced apart hoops or rings used to position blocks during column construction. The cage includes indenters for offsetting some of the blocks in order to form aesthetically pleasing grooving along the finished column.
摘要:
Shaped composite structures which are strong, stiff and hard and, at the same time, having high toughness, comprise a matrix, for example a cement or ceramics based matrix and embedded therein a plurality of plate shaped or at lest 60 mm thick elongated reinforcement components, the reinforcing component having at least 1.5 times higher tensile strength that the matrix, the minimum volume per cent concentration of the reinforcement components being related in the manner described in the specification to their tensile strength and (in case of elongated reinforcement components) also their thickness and to the compressive strength and modulus of elasticity and modulus of elasticity of the matrix. Methods for modeling and designing such structures are also disclosed, as are methods for establishing the structure for smaller matrix building blocks which may be pre-fabricated and which are arranged around pre-arranged reinforcement bodies and then fixed to each other and to the reinforcement.
摘要:
A prefabricated lintel having two spaced apart parallel upstanding legs extending along the length of the lintel and having laterally aligned holes defined therethrough and spaced therealong. The lintel further has a flat lower surface and an upper surface defining flat, horizontal shoulders positioned along outer edges of the lintel on opposite sides of the upstanding legs and extending the length of the lintel. The lintel is placed to span a doorway and a course of blocks is laid on the flat shoulders, with a second course laid on the first course and a rebar positioned on the upper surface. A plurality of wire stirrups, each defining a rebar receiving loop, are engaged over the rebar and extend through openings in the two courses with end portions of the stirrups engaged in each of the holes defined in the upstanding legs of the lintel. The block openings are filled with grout.
摘要:
A method for end to end coupling prefabricated elements of reinforced concrete, for example so as to realize a column or pillar. The elements (A, B) have cavities (5) in their ends and are placed in alignment with their respective ends comprising the cavities the one against the other, the relative angular position of the elements being such that the reinforcement metallic rods (2a) projecting beyond the end of one of the elements are introduced into the cavities of another adjacent element, and reciprocally, and that the end of the rods (2a, 2b) are introduced with clearance in positioning sleeves (6) having an opening (6') usable for welding. Then the metallic rods put end to end are welded together, and the cavities are filled in with concrete or with another appropriate material.