EP 3 718 985 A1

Narrow PSD hydraulic cement-SCM blends

(22) 14.04.2011

(43) 07.10.2020

(57) Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and/or tetracalcalcium aluminoferrite (C4AF), are optimized to have increased reactivity and/or decreased water demand compared to hydraulic cements of similar chemistry and fineness. Increasing hydraulic cement reactivity increases early strength development and release of reactive calcium hydroxide, both of which enhance pozzolan replacement and 1-28 day strengths compared to blends of conventional Portland cement and one or more pozzolans, such as fly ash, slag or natural pozzolan. Decreasing the water demand improves workability, reducing the need for water reducers and other chemical admixtures. It can also reduce shrinkage.

(71) Roman Cement, LLC, Bountiful, Utah 84010 (US)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES Fl FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

x

Related articles:

Issue 2015-12 US 2015/0299040 A1

Molten salt synthesis for manufacture of cement precursors

(22) 08.11.2013 (43) 22.10.2015 (57) A method of manufacturing calcium silicates, calcium aluminates, calcium aluminosilicates and calcium ferrites and the products thereby derived utilizing...

more
Issue 2017-11 US2017267593 (A1)

Chemical additive for calcium sulphoaluminate-modified Portland cement

(22) 29.09.2015 (43) 21.09.2017 (57) A chemical additive for calcium sulphoaluminate-modified Portland cement comprises the following substances: (a) at least one alkanolamine borate; (b) at least one...

more
Issue 2016-11 US 2016/0272544 A1

Microstructured carbonatable calcium ­silicate clinkers and methods thereof

(22) 18.03.2016 (43) 22.09.2016 (57) The invention provides novel, microstructured clinker and cement materials that are characterized by superior grindability and reactivity. The disclosed clinker...

more
Issue 2019-7-8 US 2019/0135699 A1

Compositions and methods for controlling setting of carbonatable calcium silicate cements containing hydrating materials

(22) 21.12.2018 (43) 09.05.2019 (57) The invention provides compositions and methods for controlling setting of carbonatable calcium silicate compositions that are contaminated with hydrating...

more
Issue 2019-5 EP 3 447 036 A1

Cements and cement mixtures having high mechanical properties at young ages

(22) 19.04.2016 (43) 27.02.2019 (57) Portland cements of type and category CEM I 52.5 R are described according to standard UNE-EN 197-1 and which additionally have a granulometric distribution with a...

more