摘要:
The invention concerns a MDF cement material showing better impact strength meant as an increase in the breaking total energy, by fibers addition. The cement material is homogenized by high shearing stress mixing techniques and the fibers keep a form ratio L/Ed ranging from 50 to 700.
摘要:
Relatively small, generally flat pieces (1) of flexible, open plastics mesh structure are randomly embedded in a matrix (2) without creating a substantial amount of extra void space in the matrix (2). Each piece (1) comprises more than one mesh opening, has tenaceous junctions or intersections, has high dimensional stability in the plane of the piece, and has high flexural recovery. In the case of soil, a special machine can be provided which cuts up a reel (14) of continuous mesh structure and has a rotary digging tool (23) which digs up the top layer of soil and mixes the pieces (1) with the soil.
摘要:
There are provided gypsum panels, sheets and multi-layer sheets as well as methods of preparation thereof. For example, there are provided cellulose filament-reinforced gypsum panels, sheets and multi-layer sheets and methods of preparation thereof. For example, in such gypsum panels, sheets and multi-layer sheets gypsum is bound with cellulose filaments to strengthen the gypsum panels, sheets and multi-layer sheets. The cellulose filament-reinforced gypsum panel can be, for example, a core comprising a honeycomb or corrugated structure. There are also provided aqueous suspensions comprising cellulose filaments and CaSO4.2H2O.
摘要:
The present invention relates to cement reinforcing thermoplastic resin reinforcement that is free from uneven stretch, excellent in pullout resistance, highly effective in anchoring concrete, and shows evidence of an excellent reinforcing effect; and reinforced cement mixtures using such thermoplastic resin reinforcement, the cement reinforcing thermoplastic resin reinforcement being produced by means of cutting into pieces of a predetermined length filamentary bodies provided with numerous bulges at intervals in the longitudinal direction, the filamentary bodies being formed by uniaxially stretching long bodies made of thermoplastic resin and having numerous irregularities in the longitudinal direction.
摘要:
The present invention relates to cement reinforcing thermoplastic resin reinforcement that is free from uneven stretch, excellent in pullout resistance, highly effective in anchoring concrete, and shows evidence of an excellent reinforcing effect; and reinforced cement mixtures using such thermoplastic resin reinforcement, the cement reinforcing thermoplastic resin reinforcement being produced by means of cutting into pieces of a predetermined length filamentary bodies provided with numerous bulges at intervals in the longitudinal direction, the filamentary bodies being formed by uniaxially stretching long bodies made of thermoplastic resin and having numerous irregularities in the longitudinal direction.
摘要:
The invention concerns a cement comprising at least a hydraulic binder and anisotropic polymer particles whereof the modulus of elasticity is not more than 10 GPa and whereof the longest dimension ranges on an average between 0.6 and 6 mm. The invention also concerns a cement paste and the corresponding consolidated material, the method for obtaining the cement, the paste and the material and their uses in the building sector, in public works and in oil and gas extraction.
摘要:
A composite structural material formed from aggregate within a matrix, the aggregate being a particulate material where each particle includes at least three radial legs extending outwardly from a central hub