BENDABLE CONCRETE introduction

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Unknown on 22:44

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BENDABLE CONCRETE :

bendable concrete

The new concrete is 500 times more resistant to cracking and 40 percent lighter in weight. The materials in the concrete are designed for maximum flexibility.  Traditional concrete presents many problems of lack of durability and sustainability, failure under severe loading  and the resulting expenses of repair. The ductile or bendable concrete is made mainly of the same materials in regular concrete minus the coarse aggregate. It looks exactly like regular concrete, but under excessive strain, the ECC concrete gives because the network of fibers veining the cement is allowed to slide within the cement, thus avoiding the inflexibility that causes brittleness and breakage.


The Mihara Bridge, a new structure in Hokkaido, Japan, has a deck of ECC that is a mere 2 inches (5 centimeters) thick.

Studies have shown that, ECC should last twice as long as conventional concrete, but the researchers say more tests to confirm this assertion. Professor Li Zeju estimated that within 60 years, repair and replacement of the bridge is considered the ECC can cost 37% less than traditional span DOTs entire nation faces a potential failure of mechanical joints of adjacent simple span bridge deck. These connections are necessary to adapt to a variety of changes required due to temperature fluctuations, traffic load, or settlement of the bridge. In addition, the bridge joints must withstand traffic loads and provide good ride comfort, minimum noise production. Degradation of compounds within the scope of the components can lead to deterioration.

Working with the Michigan Department of Transportation (MDOT), designers, researchers from the University of Michigan have developed possible solutions, these joints durability and maintenance. In order to enable designers to maintain the simple design of the span, and allows the conversion of the existing bridge structure, the use of “Engineered Cement Composites (ECC) links brick” instead of mechanical linkages, was presented at the University of Michigan.

The ECC has shown, limiting the formation of cracks, and also has a high ductility. This results in an ECC plastic called “flexible concrete.” The ECC has been developed for the private use of cement, sand, ash, water, a mixture of impurities and fiber structures. It is the most distinctive mechanical properties from 3% -5% of the final capacity expansion. Through a large number of micro-crack formation increasing loads, to achieve more than 300 times higher than the resilience of traditional concrete. This allows a metal material similar to plastic deformation.

ECC “Link Slabs” are created by removing the expansion joint and a portion of each of the two adjoining slabs and replacing it all with a section of ECC material.

Self-curing concrete is now being considered for use in irrigation channels in Montana.

Its initial cost(construction cost) is high, but maintenance cost is least.

Builders using the bendable concrete, for example, no need to buy and install devices that counter seismic activity.


BENDABLE CONCRETE introduction

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construction materials