Production of a textile reinforced concrete protective layers with non-woven polypropylene fabric

FIBRE CONCRETE 2017

ák, J.^1 ; Štemberk, P.^1 ; Vodika, J.^1

Czech Technical University, Thákurova 7, Prague 6

166 29, Czech Republic^1

关键词: Fine-grained aggregates;    Polypropylene fabric;    Protective layers;    Textile concretes;    Textile reinforced concretes;    Textile reinforcement;    Water penetration;    Water-cement ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/246/1/012054/pdf
DOI  :  10.1088/1757-899X/246/1/012054

来源: IOP

【 摘 要 】

Textile concrete with nonwoven polypropylene fabric can be used for protective layers of reinforced concrete structures, reducing the thickness of the cover layer or reducing the water penetration rate into the structure. The material consists of cement matrix with finegrained aggregate and nonwoven textile reinforcement. The maximum grain size of the mixture suitable for the nonwoven textile infiltration is 0.25 mm. The interlayer contains larger aggregates and short fibers. Tensile loading causes a large amount of microcracks in the material. The material can withstand strain over 25% without collapsing. Increased quality and water-cement ratio reduction was achieved using the plasticizers and distribution of the mixture into a fabric using a vibrating trowel. It is possible to make flat plates and even curved structures from this material. Larger curvatures of structures should be solved by cutting and overlapping the fabric. Small curvatures can be solved within the deformability of the fabric. Proper infiltration of the cement mixture into the fabric is the most important task in producing this material.