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Title: Self-repairing properties of OPC clinker/natural zeolite blend in water and alkali carbonate environments at 270°C

Abstract

The 10 d recoveries of the mechanical properties and crack sealing of an ordinary Portland cement (OPC) clinker/natural zeolite (ferrierite (Fer)) blend modified or unmodified with silica were tested at 270°C in water and alkali carbonate environments. The recoveries of the samples depended on their modification with silica and the curing environment, but were more than 100% after repeated damage under some test conditions. The mechanical properties and phase compositions of recovered samples were evaluated by compressive strength measurements and x-ray diffraction, differential thermogravimetric analyses, Fourier transform infrared analyses and scanning electron microscopy coupled with energy dispersive x-ray spectroscopy. The sealing of 0·25 mm wide and ~2 mm deep cracks was visualised with a three-dimensional optical microscope. Fer decomposed under high-temperature alkaline conditions with the release of hydrolysates that, along with the hydrating clinker, participated in the formation of new phases contributing to strength recoveries. Here, these phases included crystalline magnesium and aluminium-containing silicates, calcium and carbonated calcium silicates and amorphous hydrates. Crack sealing was complete for the silica-modified samples and partial for unmodified ones cured in carbonate environments. The sealing was very poor for samples cured in water. Lastly, the main sealing phases included crystalline and amorphous silica, high-temperature-stablemore » zeolites and talc mineral.« less

Authors:
 [1];  [1];  [2];  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Sustainable Energy Technologies
  2. Stony Brook Univ., NY (United States)
  3. Trabits Group, Wasilla, AK (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Office (EE-4G)
OSTI Identifier:
1425183
Report Number(s):
BNL-203325-2018-JAAM
Journal ID: ISSN 0951-7197
Grant/Contract Number:
SC0012704; AC02-98CH10886
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Advances in Cement Research
Additional Journal Information:
Journal Volume: 30; Journal Issue: 1; Journal ID: ISSN 0951-7197
Publisher:
ICE Publishing
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; 36 MATERIALS SCIENCE

Citation Formats

Pyatina, Tatiana, Sugama, Toshifumi, Ronne, Arthur, and Trabits, George. Self-repairing properties of OPC clinker/natural zeolite blend in water and alkali carbonate environments at 270°C. United States: N. p., 2018. Web. doi:10.1680/jadcr.16.00136.
Pyatina, Tatiana, Sugama, Toshifumi, Ronne, Arthur, & Trabits, George. Self-repairing properties of OPC clinker/natural zeolite blend in water and alkali carbonate environments at 270°C. United States. doi:10.1680/jadcr.16.00136.
Pyatina, Tatiana, Sugama, Toshifumi, Ronne, Arthur, and Trabits, George. Mon . "Self-repairing properties of OPC clinker/natural zeolite blend in water and alkali carbonate environments at 270°C". United States. doi:10.1680/jadcr.16.00136. https://www.osti.gov/servlets/purl/1425183.
@article{osti_1425183,
title = {Self-repairing properties of OPC clinker/natural zeolite blend in water and alkali carbonate environments at 270°C},
author = {Pyatina, Tatiana and Sugama, Toshifumi and Ronne, Arthur and Trabits, George},
abstractNote = {The 10 d recoveries of the mechanical properties and crack sealing of an ordinary Portland cement (OPC) clinker/natural zeolite (ferrierite (Fer)) blend modified or unmodified with silica were tested at 270°C in water and alkali carbonate environments. The recoveries of the samples depended on their modification with silica and the curing environment, but were more than 100% after repeated damage under some test conditions. The mechanical properties and phase compositions of recovered samples were evaluated by compressive strength measurements and x-ray diffraction, differential thermogravimetric analyses, Fourier transform infrared analyses and scanning electron microscopy coupled with energy dispersive x-ray spectroscopy. The sealing of 0·25 mm wide and ~2 mm deep cracks was visualised with a three-dimensional optical microscope. Fer decomposed under high-temperature alkaline conditions with the release of hydrolysates that, along with the hydrating clinker, participated in the formation of new phases contributing to strength recoveries. Here, these phases included crystalline magnesium and aluminium-containing silicates, calcium and carbonated calcium silicates and amorphous hydrates. Crack sealing was complete for the silica-modified samples and partial for unmodified ones cured in carbonate environments. The sealing was very poor for samples cured in water. Lastly, the main sealing phases included crystalline and amorphous silica, high-temperature-stable zeolites and talc mineral.},
doi = {10.1680/jadcr.16.00136},
journal = {Advances in Cement Research},
number = 1,
volume = 30,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2018},
month = {Mon Jan 01 00:00:00 EST 2018}
}

Journal Article:
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