CN102432246A - Anti-radiation anticorrosion concrete and its preparation method - Google Patents

Abstract

The invention relates to constructional concrete, specifically to anti-radiation anticorrosion concrete and its preparation method. The anti-radiation anticorrosion concrete contains portland cement, fly ash, a boron-containing filler, a metal filler, a water reducer, an anti-rust agent, a fine aggregate and a crude aggregate. In comparison with the prior art, with the addition of the boron-containing filler, the metal filler, the water reducer and the anti-rust agent in the concrete, the water reducer has hydrophobicity and can effectively endow the concrete with an anticorrosion effect; the anti-rust agent is combined with the concrete to form a layer of molecules on the surface of a steel bar for chemical protection so as to inhibit the corrosion of the steel bar's cathode and anode and effectively prevent the corrosion of the steel bar; and with the combination of the boron-containing filler and the metal material, the concrete has a good and effective radiation-shielding effect. By the adoption of the preparation method, the concrete is endowed with anticorrosion and anti-radiation effects and the quality of the concrete is raised.

Description

Radioprotective anticorrosion concrete and preparation method thereof

Technical field

The present invention relates to build concrete, specifically radioprotective anticorrosion concrete and preparation method thereof.

Background technology

Have in corrosive environment more coastal, traditional concrete itself does not possess etch-proof effect, and employed steel bar in reinforced concrete often receives the corrosion of corrosive medium and causes the damage of skeleton construction and bring about great losses; And in the big environment of some radiation, often adopting strong Steel Concrete and extremely thick wall, this mode cost is very high.

Summary of the invention

The present invention is the deficiency that overcomes prior art, prepares a kind of not only protection against corrosion but also radiation-resistant concrete, improves the performance of concrete itself.

For realizing above-mentioned purpose; Design a kind of radioprotective anticorrosion concrete; The filler, metallic stuffing, water reducer, rust inhibitor, fine aggregate, the coarse aggregate that comprise silicate cement, flyash, boracic; It is characterized in that adopting the feedstock production of following weight fraction ratio to form: silicate cement: flyash: water: water reducer: rust inhibitor: fine aggregate: coarse aggregate: the filler of boracic: metallic stuffing=0.65 ~ 0.75:0.35 ~ 0.25:0.52 ~ 0.72:0.007 ~ 0.012:0.014 ~ 0.016:2.1 ~ 3.6:2.5 ~ 4.4:0.01 ~ 0.015:0.85 ~ 0.89; Described fine aggregate is the sand of granularity 0.15 ~ 4.75mm; Described coarse aggregate is the rubble of granularity 4.75 ~ 19.00mm, the colemanite of the filler granularity 1.0mm of described boracic, abrasive grit or the steel grit of described metallic stuffing granularity 7mm.

A kind of preparation method of radioprotective anticorrosion concrete is characterized in that adopting following process step to be prepared from by described raw material:

(1) thick, the fine aggregate of adding formula ratio in stirrer add 35% of said water, and it is saturated that stirring 30 ~ 60s absorbs water to aggregate;

(2) flyash of adding formula ratio stirs 30 ~ 60s;

(3) silicate cement of adding formula ratio stirs 30 ~ 60s;

(4) add 20% of water reducer, rust inhibitor and said water, stir 60 ~ 120s;

(5) the boracic filler that adds formula ratio stirs 60 ~ 120s;

(6) add the metallic stuffing of formula ratio and the water of surplus, stir 60 ~ 120s, get described radioprotective anticorrosion concrete.

The present invention compares with prior art; In concrete, add filler, metallic stuffing, water reducer, the rust inhibitor of boracic, water reducer has hydrophobic nature, can effectively play etch-proof effect to concrete; Rust inhibitor and concrete combine; Show that at reinforcing bar forming one deck molecule carries out chemoproection, suppress reinforcing bar negative electrode and anodic corrosion, prevent reinforcement corrosion effectively; Through the combination of boracic filler and metallic substance, make concrete good as far as possible, effectively carry out the radiating shielding effect, make concrete play protection against corrosion, radiation-resistant effect, improve quality of concrete.

Embodiment

Adopt the feedstock production of following weight fraction ratio to form: silicate cement: flyash: water: water reducer: rust inhibitor: fine aggregate: coarse aggregate: the filler of boracic: metallic stuffing=0.65 ~ 0.75:0.35 ~ 0.25:0.52 ~ 0.72:0.007 ~ 0.012:0.014 ~ 0.016:2.1 ~ 3.6:2.5 ~ 4.4:0.01 ~ 0.015:0.85 ~ 0.89; Described fine aggregate is the sand of granularity 0.15 ~ 4.75mm; Described coarse aggregate is the rubble of granularity 4.75 ~ 19.00mm; The colemanite of the filler granularity 1.0mm of described boracic, abrasive grit or the steel grit of described metallic stuffing granularity 7mm.

A kind of preparation method of radioprotective anticorrosion concrete is characterized in that adopting following process step to be prepared from by described raw material:

(1) thick, the fine aggregate of adding formula ratio in stirrer add 35% of said water, and it is saturated that stirring 30 ~ 60s absorbs water to aggregate;

(2) flyash of adding formula ratio stirs 30 ~ 60s;

(3) silicate cement of adding formula ratio stirs 30 ~ 60s;

(4) add 20% of water reducer, rust inhibitor and said water, stir 60 ~ 120s;

(5) the boracic filler that adds formula ratio stirs 60 ~ 120s;

(6) add the metallic stuffing of formula ratio and the water of surplus, stir 60 ~ 120s, get described radioprotective anticorrosion concrete.

In concrete, add filler, metallic stuffing, water reducer, the rust inhibitor of boracic; Water reducer has hydrophobic nature; Can effectively play etch-proof effect to concrete, rust inhibitor and concrete combine, and show that at reinforcing bar forming one deck molecule carries out chemoproection; Suppress reinforcing bar negative electrode and anodic corrosion, prevent reinforcement corrosion effectively; Through the combination of boracic filler and metallic substance, make concrete good as far as possible, effectively carry out the radiating shielding effect, make concrete play protection against corrosion, radiation-resistant effect, improve quality of concrete.

Claims (2)

1. radioprotective anticorrosion concrete; The filler, metallic stuffing, water reducer, rust inhibitor, fine aggregate, the coarse aggregate that comprise silicate cement, flyash, boracic; It is characterized in that adopting the feedstock production of following weight fraction ratio to form: silicate cement: flyash: water: water reducer: rust inhibitor: fine aggregate: coarse aggregate: the filler of boracic: metallic stuffing=0.65 ~ 0.75:0.35 ~ 0.25:0.52 ~ 0.72:0.007 ~ 0.012:0.014 ~ 0.016:2.1 ~ 3.6:2.5 ~ 4.4:0.01 ~ 0.015:0.85 ~ 0.89; Described fine aggregate is the sand of granularity 0.15 ~ 4.75mm; Described coarse aggregate is the rubble of granularity 4.75 ~ 19.00mm; The colemanite of the filler granularity 1.0mm of described boracic, abrasive grit or the steel grit of described metallic stuffing granularity 7mm.

2. the preparation method of a radioprotective anticorrosion concrete is characterized in that adopting following process step to be prepared from by the raw material described in the claim 1:

(1) thick, the fine aggregate of adding formula ratio in stirrer add 35% of said water, and it is saturated that stirring 30 ~ 60s absorbs water to aggregate;

(2) flyash of adding formula ratio stirs 30 ~ 60s;

(3) silicate cement of adding formula ratio stirs 30 ~ 60s;

(4) add 20% of water reducer, rust inhibitor and said water, stir 60 ~ 120s;

(5) the boracic filler that adds formula ratio stirs 60 ~ 120s;

(6) add the metallic stuffing of formula ratio and the water of surplus, stir 60 ~ 120s, get described radioprotective anticorrosion concrete.