US 2018/0312445 A1

Use of quarry fines and/or limestone powder to reduce clinker content of cementitious compositions

(22) 05.07.2018

(43) 01.11.2018

(57) Quarry fines and/or limestone powder are used to reduce clinker content in concrete, mortar and other cementitious compositions, typically in combination with one or more pozzolanically active SCMs. Quarry fines and/or limestone powder can replace and/or augment a portion of hydraulic cement binder and/or fine aggregate. Quarry fines and/or limestone powder can advantageously replace a portion of cement binder and fine aggregate, acting as an intermediate that fills a particle size void between the largest cement particles and smallest fine aggregate particles. Supplemental lime can advantageously maintain or enhance balance of calcium ions in the mix water and/or pore solution. Supple-mental sulfate can advantageously address sulfate deficiencies caused by high clinker reduction, use of water reducers and/or superplasticers, and SCMs containing aluminates. Such systematic approach to beneficially using quarry fines, limestone powder, SCMs, lime, and sulfate addresses many issues and permits high clinker reduction with similar or increased strength.

(71) Roman Cement, LLC, Salt Lake City, UT (US)

x

Related articles:

Issue 2019-5 US 2019/0071354 A1

Use of quarry fines and/or limestone powder to reduce clinker content of cementitious compositions

(22) 05.11.2018 (43) 07.03.2019 (57) Quarry fines and/or limestone powder are used to reduce clinker content in concrete, mortar and other cementitious compositions, typically in combination with one...

more
Issue 2018-10 WO 2018/132429 A1

Use of quarry fines and/or limestone powder to reduce clinker content of cementitious compositions

(22) 10.01.2018 (43) 19.07.2018 (57) Quarry fines and/or limestone powder are used to reduce clinker content in concrete, mortar and other cementitious compositions, typically in combination with one...

more
Issue 2018-11 US 2018/0230057 A1

White cementitious compositions

(22) 11.04.2018 (43) 16.08.2018 (57) A cementitious composition includes (i) white Portland cement having a fineness of about 350-550 m2/kg, D90 between about 11-50 ?m, and total combined iron oxide,...

more
Issue 2020-5-6 US 2020/0055775 A1

Early strength enhancement of cements

(22) 25.10.2017 (43) 20.02.2020 (57) A method of making a cement composition, comprising grinding a cement clinker and a strength-enhancing agent, thereby producing a hydraulic cementitious powder,...

more
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