Concrete mix composition
    1.
    发明授权

    公开(公告)号:US11479507B2

    公开(公告)日:2022-10-25

    申请号:US16168268

    申请日:2018-10-23

    摘要: A cementitious blend composition and a concrete mix composition preferable for making concrete resistant to high temperatures and alkaline conditions, particularly for making durable concrete for constructing an alumina digester tank in an aluminum smelter. The cementitious blend composition includes at least one hydraulic cement, silica fume (SF), and natural pozzolan (NP), wherein a weight percent ratio of at least one hydraulic cement:SF:NP in the cementitious blend composition lies in the range of (24-63):(5-44):(32-40) with the sum of the weight percentages of the at least one hydraulic cement, the SF, and the NP not exceeding 100%. The concrete mix composition comprises water and the cementitious blend composition, wherein a weight ratio of the water to the cementitious blend composition is 0.2-0.5, and wherein the concrete mix composition has a content of the cementitious blend composition of 400-550 kg/m3.

    SETTABLE COMPOSITIONS COMPRISING REMEDIATED COAL ASH AND METHODS OF CEMENTING IN SUBTERRANEAN FORMATIONS

    公开(公告)号:US20210039992A1

    公开(公告)日:2021-02-11

    申请号:US17079093

    申请日:2020-10-23

    摘要: Some embodiments of the present invention comprise a method of cementing comprising: placing a settable composition into a well bore, the settable composition comprising remediated coal ash, hydraulic cement, and water; and allowing the settable composition to set. Other embodiments comprise a method of cementing comprising: placing a settable composition into a well bore, the settable composition comprising remediated coal ash, calcium hydroxide (lime), and water; and allowing the settable composition to set. Other embodiments comprise a settable composition comprising: remediated coal ash, hydraulic cement, calcium hydroxide, natural pozzolan and water; and allowing the composition to set. Other embodiments comprise a settable composition comprising remediated coal ash and any combination of hydraulic cement, calcium hydroxide, slag, fly ash, and natural or other pozzolan.

    Antifouling matted object
    6.
    发明授权

    公开(公告)号:US10532945B2

    公开(公告)日:2020-01-14

    申请号:US15846594

    申请日:2017-12-19

    申请人: TOTO LTD.

    摘要: An object of the present invention is to provide a matted object capable of achieving both a lower range of glossiness and an antifouling property. A matted object includes a substrate, and a glassy layer provided on the surface of the substrate. The surface of the glassy layer has a 60°-glossiness of 20 or less, a skewness Rsk of −0.5 or more, and a maximum height roughness Rz more than 2.5 μm and less than 5.7 μm, the skewness Rsk and the maximum height roughness Rz being specified in JIS B0601 (2001).

    Lithium infused raw fly ash for the production of high strength cementitious products

    公开(公告)号:US10167228B2

    公开(公告)日:2019-01-01

    申请号:US14966707

    申请日:2015-12-11

    申请人: VHSC, Ltd.

    摘要: A method of producing high-strength cementitious product from raw fly ash by mixing the raw fly ash with a lithium compound, whereby milling of the raw fly ash to achieve requisite strength is unnecessary. It has now been found that by adding as little as 0.1% of lithium chloride to raw untreated Class C fly ash, one can achieve improved seven-day and twenty-eight-day compressive strength. At the very least, raw lithium treated Class C fly ash may be used at lower total cementitious content per yard of concrete as opposed to Ordinary Portland Cement (OPC) for improved compressive strength.