# US 11,999,661 B2 · Interface joint material based on industrial solid waste and its preparation

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- Number: US 11,999,661 B2
- Document ID: US11999661B2
- Status: Granted
- Kind: B2
- Application number: 18/315,396
- Filed: 2023-05-10
- Published: 2023-11-30
- Granted: 2024-06-04
- Earliest claimed: 2022-05-26
- Assignees: NingboTech University
- Applicants: NingboTech University
- Inventors: Chonggen Pan; Yu Hu; Jiawei Zang; Shiyang Qu; Zhigao Wei
- Web page: https://patentgrep.com/patent/US11999661B2

## CPC

- C04B 7/02: Portland cement
- C04B 14/106: {Kaolin}
- C04B 18/08: Flue dust {, i.e. fly ash}
- C04B 24/16: Sulfur-containing compounds
- C04B 24/2664: {of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers}
- C04B 28/04: Portland cements
- C04B 28/08: Slag cements
- C04B 2103/302: {Water reducers}
- C04B 2111/00672: {Pointing or jointing materials}
- C04B 2111/74: Underwater applications
- Y02W 30/91: Use of waste materials as fillers for mortars or concrete
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

An interface joint material based on industrial solid waste includes raw materials in parts by weight: portland slag cement, 80˜130 parts; metakaolin, 80˜130 parts; the industrial solid waste, 80˜130 parts; sodium silicate, 25˜35 parts; alkali, 8˜12 parts; acrylate, 30˜36 parts; a trivinyl ether compound, 1˜3 parts; inorganic sulfite, 1˜3 parts; persulfate, 1˜3 parts; a water reducing agent, 3˜6 parts, and water, 60˜80 parts. The interface joint material is suitable for a concrete interface of different components, with good bonding, high strength, and the advantages of pumping, fast hard, early strength, micro expansion and high ductility; In addition, the industrial solid waste is added into the interface joint material, which improves a utilization rate of the industrial solid waste in construction joint materials, and has significant for recycling of the industrial solid waste.

## Claims

### Claim 1

An interface joint material based on industrial solid waste, comprising raw materials in parts by weight as follows:
portland slag cement, 80˜130 parts,
metakaolin, 80˜130 parts,
the industrial solid waste, 80˜130 parts,
sodium silicate, 25˜35 parts,
alkali, 8˜12 parts,
acrylate, 30˜36 parts,
a trivinyl ether compound, 1˜3 parts,
inorganic sulfite, 1˜3 parts,
persulfate, 1˜3 parts,
a water reducing agent, 3˜6 parts, and
water, 60˜80 parts;
wherein the industrial solid waste is a mixture with a mass ratio of slag:a thermal power plant discharged material:fly ash being 30:30:40, and the thermal power plant discharged material contains silicon oxide, aluminum oxide and iron oxide;
wherein the alkali is one of sodium hydroxide and potassium hydroxide; and the acrylate is a mixture of magnesium acrylate and calcium acrylate with a mass ratio of 5:1;
wherein the trivinyl ether compound is one of trivinyl cyanate and trihydroxypropane trivinyl ether;
wherein the inorganic sulfite is one of sodium sulfite and potassium sulfite;
wherein the persulfate is one of potassium persulfate and sodium persulfate; and
wherein a method for preparing the interface joint material comprises following steps:
step 1, weighing the portland slag cement, the metakaolin, the industrial solid waste, the water reducing agent, the acrylate, the trivinyl ether compound and the inorganic sulfite in the parts by weight, and mixing evenly to obtain a mixture A;
step 2, weighing the sodium silicate, the alkali and one-half of the water in the parts by weight to obtain a mixture B, and adding the mixture B to the mixture A to obtain a mixture C; and
step 3, weighing the persulfate and the remaining water to obtain a mixture D and adding the mixture D into the mixture C, and mixing evenly to obtain the interface joint material based on the industrial solid waste.

### Claim 2 (depends on 1)

The interface joint material based on the industrial solid waste according to claim 1, wherein the interface joint material comprises the raw materials in parts by weight as follows:
the portland slag cement, 100 parts,
the metakaolin, 100 parts,
the industrial solid waste, 100 parts,
the sodium silicate, 30 parts,
the alkali, 10 parts,
the acrylate, 30 parts,
the trivinyl ether compound, 3 parts,
the inorganic sulfite, 3 parts,
the persulfate, 3 parts,
the water reducing agent, 5 parts, and
the water, 70 parts.

### Claim 3 (depends on 1)

The interface joint material based on the industrial solid waste according to claim 1, wherein a model number of the portland slag cement is P·S·A 32.5; and the fly ash is grade I fly ash.

### Claim 4 (depends on 1)

The interface joint material based on the industrial solid waste according to claim 1, wherein the water reducing agent is one of an amino sulfonate water reducing agent and a polycarboxylic acid water reducing agent.