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Title: Mechanical Characterization of Low Modulus Polymer-Modified Calcium-Silicate-Hydrate (C-S-H) Binder

Journal Article · · Cement and Concrete Composites
 [1];  [2];  [3];  [3];  [1];  [1]
  1. Univ. of New Mexico, Albuquerque, NM (United States)
  2. Assiut Univ., (Egypt)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
+ Show Author Affiliations

Calcium-silicate-hydrate (C-S-H) represents a key microstructural phase that governs the mechanical properties of concrete at a large scale. Defects in the C-S-H phase are also responsible for the poor ductility and low tensile strength of concrete. Manipulating the microstructure of C-S-H can lead to new cementitious materials with improved structural performance. This paper presents an experimental investigation aiming to characterize a new synthetic polymer-modified synthetic calcium-silicate-hydrate (C-S-H)/styrene-butadiene rubber (SBR) binder. The new C-S-H/SBR binder is produced by calcining calcium carbonate and mixing this with fumed silica (SiO2), deionized water and SBR. Mechanical, physical, chemical and microstructural characterization was conducted to measure the properties of new hardened C-S-H binder. Results from the experimental investigation demonstrate the ability to engineer a new C-S-H binder with low elastic modulus and improved toughness and bond strength by controlling the SBR content and method of C-S-H synthesis. The new binder suggests the possible development of a new family of low-modulus silica-polymer binders that might fit many engineering applications such as cementing oil and gas wells.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003525; NA-0003525 SAND2021-10412 J
OSTI ID:
1820422
Alternate ID(s):
OSTI ID: 1868830
Report Number(s):
SAND-2021-10412J; 699026
Journal Information:
Cement and Concrete Composites, Vol. 124; ISSN 0958-9465
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (19)

Nano-mechanical characterization of synthetic calcium–silicate–hydrate (C–S–H) with varying CaO/SiO2 mixture ratios journal February 2013
Polymer-Modified Concrete: Review journal May 1997
Chemical structure of cement aged at normal and elevated temperatures and pressures journal January 2006
Comparison between the effects of phosphorous slag and fly ash on the C-S-H structure, long-term hydration heat and volume deformation of cement-based materials journal July 2020
The Application of 29Si NMR Spectroscopy to the Analysis of Calcium Silicate-Based Cement using Biodentine™ as an Example journal May 2019
The surface area of cement paste as measured by neutron scattering: evidence for two C-S-H morphologies journal June 1998
Influence of SBR Latex on the Formation of C-S-H in C3S Paste journal April 2013
Mechanical and permeability properties of polymer-modified concrete using hydrophobic agent journal September 2020
A Study of Calcium-Silicate-Hydrate/Polymer Nanocomposites Fabricated Using the Layer-By-Layer Method journal March 2018
Synthesis and nano-mechanical characterization of calcium-silicate-hydrate (C-S-H) made with 1.5 CaO/SiO2 mixture journal September 2012
Differentiation of interlayer and adsorbed water in hydrated portland cement by thermal analysis journal November 1971
The nano-branched structure of cementitious calcium–silicate–hydrate gel journal January 2011
Cement and Concrete Nanoscience and Nanotechnology journal February 2010
Mechanical properties of calcium silicate hydrates journal April 2010
Evolution in Modeling Cement Hydration and Polymer Hardening in Polymer-Cement Concrete journal April 2013
Physico-chemical changes in nano-silica and silica fume modified cement pastes in response to leaching journal January 2009
Sustainable cement production—present and future journal July 2011
Dehydration and rehydration processes of cement paste exposed to high temperature environments journal May 2004
Polymerised high internal phase emulsion cement hybrids: Macroporous polymer scaffolds for setting cements journal April 2011

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
calcium silicate hydrate (C-S-H)
polymers
wellbore integrity
binder