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A platform for research: civil engineering, architecture and urbanism
Prestressed fiber bar reinforced 3D printing concrete and preparation method thereof
The invention relates to prestressed fiber bar reinforced 3D printing concrete and a preparation method thereof.According to the prestressed fiber bar reinforced 3D printing concrete and the preparation method thereof, heat-shrinkable fibers and concrete are printed at the same time in a double-head printing mode, so that the heat-shrinkable fibers are evenly and continuously distributed in the concrete, and uneven concrete strength caused by excessive adding or uneven distribution is avoided; continuous thermal shrinkage type fibers are adopted as prestressed tendons, steel bar planting and printing are synchronously carried out, and the process is simple; compared with other shrinkable fibers, the heat-shrinkable fibers adopted by the invention are low in shrinkage temperature, low in energy consumption and simple and convenient to operate; after the concrete is subjected to thermal curing, the thermal shrinkage type fibers are heated to shrink to drive the concrete to shrink, prestress is directionally applied to the concrete, the bending and pulling bearing capacity and the crack resistance of the 3D printing concrete are improved, cracking and embrittlement of a concrete structure can be effectively reduced, and therefore the durability of the concrete structure is improved, and the service life of the concrete structure is prolonged.
本发明涉及一种预应力纤维筋增强3D打印混凝土及其制备方法，本发明通过双头打印方式，同时打印热缩型纤维和混凝土，使热缩型纤维在混凝土中均匀连续地分布，避免过度添加或不均匀分布造成混凝土强度不均；本发明采用连续热缩型纤维作为预应力筋，植筋与打印同步进行，工艺简单；与可收缩的其他纤维相比，本发明采用的热缩型纤维的收缩温度低，能耗低，且操作简便；对混凝土进行热养护后，热缩型纤维受热收缩带动混凝土收缩，定向对混凝土施加预应力，提高3D打印混凝土的弯拉承载能力和抗裂性能，可以有效地减少混凝土结构的开裂和脆化，从而提高其耐久性和使用寿命。
Prestressed fiber bar reinforced 3D printing concrete and preparation method thereof
The invention relates to prestressed fiber bar reinforced 3D printing concrete and a preparation method thereof.According to the prestressed fiber bar reinforced 3D printing concrete and the preparation method thereof, heat-shrinkable fibers and concrete are printed at the same time in a double-head printing mode, so that the heat-shrinkable fibers are evenly and continuously distributed in the concrete, and uneven concrete strength caused by excessive adding or uneven distribution is avoided; continuous thermal shrinkage type fibers are adopted as prestressed tendons, steel bar planting and printing are synchronously carried out, and the process is simple; compared with other shrinkable fibers, the heat-shrinkable fibers adopted by the invention are low in shrinkage temperature, low in energy consumption and simple and convenient to operate; after the concrete is subjected to thermal curing, the thermal shrinkage type fibers are heated to shrink to drive the concrete to shrink, prestress is directionally applied to the concrete, the bending and pulling bearing capacity and the crack resistance of the 3D printing concrete are improved, cracking and embrittlement of a concrete structure can be effectively reduced, and therefore the durability of the concrete structure is improved, and the service life of the concrete structure is prolonged.
本发明涉及一种预应力纤维筋增强3D打印混凝土及其制备方法，本发明通过双头打印方式，同时打印热缩型纤维和混凝土，使热缩型纤维在混凝土中均匀连续地分布，避免过度添加或不均匀分布造成混凝土强度不均；本发明采用连续热缩型纤维作为预应力筋，植筋与打印同步进行，工艺简单；与可收缩的其他纤维相比，本发明采用的热缩型纤维的收缩温度低，能耗低，且操作简便；对混凝土进行热养护后，热缩型纤维受热收缩带动混凝土收缩，定向对混凝土施加预应力，提高3D打印混凝土的弯拉承载能力和抗裂性能，可以有效地减少混凝土结构的开裂和脆化，从而提高其耐久性和使用寿命。
Prestressed fiber bar reinforced 3D printing concrete and preparation method thereof
预应力纤维筋增强3D打印混凝土及其制备方法
WU JING (author) / ZHENG XUELING (author) / YANG WEN (author) / DING QINGJUN (author) / WANG LUOXIN (author) / WANG HUA (author)
2024-02-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
/
D01D
MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
,
Mechanische Verfahren oder Vorrichtungen für die Herstellung von produzierten Filamenten, Zwirnen, Fasern, Borsten oder Bändern
/
D01F
Chemische Gesichtspunkte bei der Herstellung von produzierten Filamenten, Zwirnen, Fasern, Borsten oder Bändern
,
CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
/
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
/
E04G
SCAFFOLDING
,
Baugerüste
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