Description

The concept of welded steel fabric/ mesh was first proposed in 1901, while the first major application was in 1908. In 1922, it was tested to be the sufficiently suitable material for roads of heavy traffic. By the close of World War II, it showed its strength because it requires less labor and time. It was seen as the perfect reinforcing material to help Europe re-build after the war. Before the turn of the century, it was accepted as a viable form of concrete reinforcement in building. It has also enjoyed great usage in other projects like airport runways and a number of architecturally groundbreaking buildings.

Technical Parameters

STANDARD		Re YIELD STENGTH Mpa/(ksi)	Rm TENSILE STRENGTH Mpa/(ksi)	Rm/Re RATIO	ELONGATION (Reduction of area)	SHEAR STRENGTH (N/mm2)	BEND TEST


ASTM Standard Specification for Steel wire/ Steel Welded Wire Reinforcement,Plain,for Concrete	ASTM A 82M-07	Rp0.5≥485(70)	≥550(80)	≥1.05	(Z≥30%)	-	D=2d

	ASTM A185M-06≥φ3.15mm	≥450(65)	≥515(75)	≥1.05	(Z≥30%)	≥241xSmax	D=2d

BS 4482：2005 Steel Wire for the Reinforcement of Concrete	500 <8mm	≥500	≥510	≥1.02	Agt≥1.0%	-	D=4d

	500 ≥8mm	≥500	≥525	≥1.05	Agt≥2.5%

BS 4483：2005 Steel Fabric for the Reinforcement of Concrete	B500A	≥485	≤650	≥1.03 (ifd<8mm,≥1.02)	Agt≥2.5 (ifd<8mm,≥1.0)	≥125xSmax	D=4d

	B500B	≥485	≤650	≥1.03 (ifd<8mm,≥1.02)	Agt≥4.0%

	B500C	≥485	≤650	≥1.13	Agt≥6.0%

BS 4449：2005 Steel for the Reinforcement of Concrete-Weldable Reinforcing Steel	B500A	≥500	≤650	≥1.05 (ifd<8mm,≥1.02)	Agt≥2.5% (ifd<8mm,≥1.0)	≥121xSmax	if d≤16(D=4d) if d>16(D=7d)

	B500B	≥500	≤650	≥1.08	Agt≥5.0%

	B500C	≥500	≤650	≥1.15,≤1.35	Agt≥7.5%

AS/NZS 4671：2001 Steel Reinforcing Materials	500L	≥500	≤750	≥1.03	Agt≥1.5%	≥250xSmax	D=4d

	500N	≥500	≤650	≥1.08	Agt≥5.0%

	500E	≥500	≤600	≥1.15,≤1.4	Agt≥10.0%

SS 561：2010 Steel Fabric for the Reinforcement of Concrete	500A	≥485	≤650	≥1.03	Agt≥2%	≥250xSmax	D=4d

	500B	≥485	≤650	≥1.06	Agt≥4.0%

	500C	≥485	≤650	≥1.13	Agt≥6.0%

Advantages

Improve crack resistance

The production of welded steel mesh is thoroughly planned and checked. The detailed design specifications lay out the accurate wire spacing, which enable the uniform load evenly spread over the entire concrete structure. Therefore, reduce the cracks occurrence. In fact, actual test result conducted in the United States shows that road pavement with steel mesh can reduce more than 75% cracks occurrence compare to those without.

Increase productivity

With welded steel mesh, the time used for on-site bar straightening, cutting, bending and fixing can be reduced up to 70% man-hour, which shorten the construction period.

Market trends and prospects

Cold-rolled ribbed steel wire and welded steel mesh, which are also a new and efficient building materials have been listed under the Ministry of Construction "Ninth Five" program, focused on promoting the application of latest building materials and technologies. It is bound to be widely used in construction, in order to raise the level of industrialization of the rebar works, results to greater economy and social benefits.

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Welded Steel Wire Mesh

Description

Technical Parameters

Advantages