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...

Find out more in the current Issue. Order now!

Related articles:

5/2016 EP 2 838 574 B1

Admixture and method for freeze-thaw damage resistance and scaling damage resistance of cementitious compositions

(22) 19.04.2013 (43) 25.02.2015 (45) 09.03.2016 Description: Provided are a freeze-thaw damage resistance and scaling damage resistance admixture and a method of preparing a freeze-thaw damage...

more
5/2017 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...

more
1-2/2018 US 2017/0275203 A1

Cement composition and manufacturing method for cement cured body using same

(22) 25.08.2015 (43) 28.09.2017 (57) Provided is a cement composition that has high fluidity (for example, a 0-drop flow value of 200 mm or more) before curing and exhibits high compressive strength...

more
6/2015 EP 1 935 861 B1

Liquid-repellent and stain-resistant ­cementitious product

(22) 03.11.2006 (43) 25.06.2008 (45) 15.04.2015 (73) E. I. du Pont de Nemours and Company, Wilmington, DE 19898 (US) (84) DE FR GB IT NL Summary: The present invention comprises a cement which has...

more
7-8/2016 US 2016/0160109 A1

Novel cement composition for lost circulation application

(22) 25.11.2013 (43) 09.06.2016 (57) A method of cementing a subterranean formation includes providing a cement composition comprising cementitious material, aqueous base fluid, nanoparticles,...

more