KAZAN STATE UNIVERSITY OF ARCHITECTURE AND ENGINEERING

The influence of a complex ­modifying agent on the hydration and structure ­formation of self-compacting concrete

The article reviews the results of research into the influence of a complex modifying agent on the rheological properties of cement paste and the strength of hardened cement paste. The article describes the hydration and structure formation of hardened cement paste, and special aspects of the phase constitution of the hydration products of Portland cement when modified by a complex admixture.

1 Introduction

The problems of producing durable high-performance concrete are still topical. This type of concrete is normally used in the foundations of buildings. The top priority for the structure of the hardened cement paste is that it has a high density and low capillary porosity, and consists predominantly of low-basicity hydrated phases [4, 7, 14]. One of the simplest and most effective methods of improving the properties of the cement composition is the introduction of complex admixtures that contain effective superplasticizing admixtures, hydrophobic waterproofing agents and active...

Related articles:

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 2018-11 WO 2018/147909 A1

Early strength enhancement of cements

(22) 25.10.2017 (43) 16.08.2018 (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 2020-5-6 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 2018-3 US 2017/0369375 A1

Cementitious blend and concrete mix compositions resistant to high temperatures and alkaline conditions

(22) 28.06.2016 (43) 28.12.2017 (57) A cementitious blend composition and a concrete mix composition preferable for making concrete resistant to high temperatures and alkaline conditions, particularly...

more
Issue 2019-3 US 2018/0312435 A1

Agents for enhancing cement strength

(22) 24.04.2018 (43) 01.11.2018 (57) A method of forming a cement composition. The method comprises adding to a hydraulic cementitious material a first strength-enhancing agent and a second...

more