US 2017/0057869 A1

Concrete having reduced surface drying time and cementitious compositions and methods for manufacturing same

(22) 01.07.2016

(43) 02.03.2017

(57) Cementitious compositions and methods for preparing and using the cementitious compositions to yield hardened concrete. The cementitious compositions yield hardened concrete having reduced or attenuated water vapor emission and lower internal relative humidity (IRH). Cementitious compositions are characterized by the property of rapid surface drying while maintaining good workability, particularly when using porous lightweight aggregates that absorb sub­stantial amounts of water. Methods of decreasing water availability and increasing surface drying of concrete, including lightweight concrete, are provided. A water soluble ionic salt may be used to sequester water within the pores and capillaries of the cement paste and/or porous lightweight aggreate by modifying the colligative propertie of pore water. The salt may be added directly to concrete or the concrete mix water, or, alternatively, aggregates may be infused with a water-salt solution to provide treated porous aggregates having improved water saturation and water retention.

(71) US Concrete, Inc., Euless, TX (US)

x

Related articles:

Issue 2020-3 US 10 494 298 B1

Cement-SCM compositions and methods and systems for their manufacture

(22) 24.10.2016 (45) 03.12.2019 (57) Cement-SCM compositions have improved strength compared to cement-SCM compositions made using conventional blended cements and methods. The cement-SCM compositions...

more
Issue 2022-2 US 2022/0017419 A1

Use of mineral fines to reduce clinker content of cementitious compositions

(22) 16.09.2021 (43) 20.01.2022 (57) Mineral fines reduce OPC content in concrete, mortar and other cementitious compositions, typically in combination with a pozzolanically active SCM. Mineral fines...

more
Issue 2021-1 EP 3 733 628 A1

Autoclaved cement compositions

(22) 29.04.2019 (43) 04.11.2020 (57) The use of calcium aluminate cement in autoclaved cement products, cementitious compositions suitable for forming the autoclaved cement products, and methods for...

more
Issue 2022-6 US 2022/0220035 A1

Autoclaved cement compositions

(22) 29.04.2020 (43) 14.07.2022 (57) The use of calcium aluminate cement in autoclaved cement products, cementitious compositions suitable for forming the autoclaved cement products, and methods for...

more
Issue 2021-1 US 2020/0331805 A1

Use of mineral fines to reduce clinker content of cementitious compositions

(22) 06.07.2020 (43) 22.10.2020 (57) Mineral fines are used to reduce clinker content in concrete, mortar and other cementitious compositions, typically in combination with one or more pozzolanically...

more