Coordinating Concrete Delivery and Placement

    公开(公告)号:US20210035036A1

    公开(公告)日:2021-02-04

    申请号:US16941494

    申请日:2020-07-28

    Abstract: Described are a method and system for coordinating the delivery and placement of concrete loads at a job site, and more particularly to adjusting a set time value or value range of the concrete loads, thereby to facilitate finishing or other concrete placement activities. In exemplary embodiments, the adjustments can be made based on an assessment of previously placed concrete loads. The set time values or value ranges of the concrete can be monitored and adjusted to achieve desired properties during installation and/or in its hardened state.

    METHOD OF REDUCING STICKINESS OF CEMENTITIOUS COMPOSITIONS

    公开(公告)号:US20190135692A1

    公开(公告)日:2019-05-09

    申请号:US15790857

    申请日:2017-10-23

    Abstract: The present invention provides a method and admixture composition for making hydratable cementitious compositions, ones believed to have much less stickiness in comparison to prior methods. Decreased stickiness in concrete mixes means that they are easier to pour or to cast into place, as well as easier to finish. Dispersant carboxylate polymers of the invention having this ability are characterized by possessing two different, relatively short chain lengths of polyalkyleneoxide units and low weight-average molecular weights.

    WATER REDUCING ADMIXTURE FOR STABLE AIR
    30.
    发明申请

    公开(公告)号:WO2021102294A1

    公开(公告)日:2021-05-27

    申请号:PCT/US2020/061559

    申请日:2020-11-20

    Abstract: The present invention provides exemplary additive compositions and methods whereby hydratable cementitious compositions, such as concrete, can be modified using polycarboxylate type ether or ester cement dispersant polymers of a small size, in combination with at least one alkyl alkoxylate type surface active agent which typically hitherto is considered detergent-like in generating air bubbles (heads of foam) in aqueous environments. The present inventors discovered surprisingly that such agents could be used to control air content in plastic concrete mixes in combination with the polycarboxylate type ether or ester cement dispersant polymer.

Patent Agency Ranking