US 12,662,425 B2 · Marine concrete composition using dechlorination microorganism, and construction method of marine concrete structure for the same

Abstract

Provided are a marine concrete composition using dechlorination microorganisms capable of easily removing chlorine generated by seawater through an electrical method by allowing electrons emitted from electricity-generating microorganisms to flow through steel fibers incorporated into ultra-high-performance concrete (UHPC) or high-performance fiber reinforced concrete (HPFRCC) through a dechlorination microbial capsule carrier and capable of self-healing concrete crack sites through a self-healing microbial capsule carrier and is also capable of fundamentally solving the problem of reduced durability against salt damage of ultra-high-performance concrete or high-performance fiber reinforced concrete for application in marine construction environments through a dechlorination microbial capsule carrier, and a method for constructing a marine concrete structure using the same.

Claims10

Dependent claims

A marine concrete composition formed of ultra-high-performance concrete (UHPC), wherein the ultra-high-performance concrete (UHPC) composition comprises:

100 parts by weight of cement as a binder (B);
as a binder, 10 to 30 parts by weight of silica fume;
100 to 140 parts by weight of fine aggregate;
15 to 30 parts by weight of a filler;
15 to 25 parts by weight of mixing water (W) based on 100 parts by weight of the cement;
1 to 3 parts by weight of an expansion material;
1 to 3 parts by weight of a shrinkage reducing agent;
and 4 to 7 parts by weight of a water reducing agent, and water, which is the mixing water (W), and the binder (B) are mixed such that a ratio (W/B) is 0.2 or less;
1.5 to 3% of steel fiber is incorporated based on the total volume of the ultra-high-performance concrete;
and
0.5 to 2% of self-healing microbial capsules and 1 to 5% of dechlorination microbial capsules based on the total volume of the ultra-high-performance concrete are incorporated, the self-healing microbial capsule is a carrier of spore-forming microorganisms for self-healing, and the dechlorination microbial capsule is a carrier of electricity-generating microorganisms for removing chlorine.

8 more elements

A marine concrete composition formed of a high-performance fiber reinforced cementitious composite (HPFRCC), wherein the high-performance fiber reinforced cementitious composite (HPFRCC) composition comprises:

100 parts by weight of cement as a binder (B);
as a binder, 10 to 30 parts by weight of silica fume;
100 to 140 parts by weight of fine aggregate;
15 to 30 parts by weight of a filler;
22 to 64 parts by weight of mixing water (W);
1 to 3 parts by weight of an expansion material;
1 to 3 parts by weight of a shrinkage reducing agent;
and 10 to 30 parts by weight of a water reducing agent, and water, which is the mixing water (W), and the binder (B) are mixed such that a ratio (W/B) is 0.2 to 0.4;
1.5 to 3% of steel fiber is incorporated based on the total volume of the cementitious composite;
and
0.5 to 2% of self-healing microbial capsules and 1 to 5% of dechlorination microbial capsules based on the total volume of the cementitious composite are incorporated, the self-healing microbial capsule is a carrier of spore-forming microorganisms for self-healing, and the dechlorination microbial capsule is a carrier of electricity-generating microorganisms for removing chlorine.

8 more elements

Dependencies are inferred from the claim text.

Marine concrete composition using dechlorination microorganism, and construction method of marine concrete structure for the same

Life of this patent

Marine concrete composition using dechlorination microorganism, and construction method of marine concrete structure for the same

Life of this patent

Abstract

Claims10