ADDITIVE COMPOSITION FOR STRENGTH ENHANCEMENT OF CEMENTITIOUS COMPOSITIONS

    公开(公告)号:US20240376005A1

    公开(公告)日:2024-11-14

    申请号:US18658709

    申请日:2024-05-08

    Abstract: A composition for use as an additive for enhancing the strength of a cementitious composition, the composition comprising an alkanolamine comprising ethanoldiisopropanolamine (EDIPA) and optionally at least one selected from the group consisting of triisopropanolamine (TIPA), diethanolisopropanolamine (DEIPA), triethanol amine (TEA), and tetrakis-(2-hydroxyethyl)ethylenediamine (THEED); at least one set retarder selected from the group consisting of a gluconate salt, sucrose, corn syrup, and molasses; and at least one set accelerator selected from the group consisting of a thiocyanate salt, sodium chloride, and calcium chloride, wherein the alkanolamine and the set accelerator are present at a mass ratio of from 0.2 to 4.0 and the set accelerator and the set retarder are present at a mass ratio of from 1 to 10. The additive enhances the short term and long-term strength of cement when hydrated.

    Rotated concrete volume determination

    公开(公告)号:US11331829B2

    公开(公告)日:2022-05-17

    申请号:US16942972

    申请日:2020-07-30

    Abstract: Volume of a concrete mix load in a rotatable mixer drum is determined using an in-and-out sensor probe system wherein the probe submerges into and exits from the concrete during mixer drum rotation and provides data to a processor used in the system for calculating volume of the concrete mix load based on the data. To take into consideration any concavity, convexity, and/or cascading surface flow effects that can hinder accurate determination of the concrete load volume, the processor is configured to compare original batch volume and rheology of the concrete load monitored during drum rotation. The calibration of load volume involves a comparison between real-time data and historic data stored in processor-accessible memory, and further take into account the speed and tilt of the mixer drum (such as caused by roadway conditions), the concrete mix design, and other factors.

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