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          <given>Alastair</given>
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        <id>A.Marsh@bath.ac.uk</id>
        <orcid>0000-0002-5603-4643</orcid>
        <affiliation>University of Bath</affiliation>
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        <name>
          <family>Heath</family>
          <given>Andrew</given>
        </name>
        <id>A.Heath@bath.ac.uk</id>
        <orcid>0000-0003-0154-0941</orcid>
        <affiliation>University of Bath</affiliation>
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      <item>
        <type>Supervisor</type>
        <name>
          <family>Patureau</family>
          <given>Pascaline</given>
        </name>
        <id>P.M.F.Patureau@bath.ac.uk</id>
        <affiliation>University of Bath</affiliation>
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        <type>Supervisor</type>
        <name>
          <family>Evernden</family>
          <given>Mark</given>
        </name>
        <id>M.Evernden@bath.ac.uk</id>
        <orcid>0000-0003-1121-9844</orcid>
        <affiliation>University of Bath</affiliation>
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      <item>
        <type>Supervisor</type>
        <name>
          <family>Walker</family>
          <given>Pete</given>
        </name>
        <id>P.Walker@bath.ac.uk</id>
        <orcid>0000-0001-9648-3999</orcid>
        <affiliation>University of Bath</affiliation>
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    <title>Dataset for &quot;Alkali activation behaviour of un-calcined montmorillonite and illite clay minerals&quot;</title>
    <subjects>
      <item>CP0020</item>
      <item>CP0110</item>
      <item>GE0030</item>
      <item>GE0040</item>
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      <item>dept_civ_eng</item>
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    <keywords>alkali activation, geopolymer, montmorillonite, illite, clay</keywords>
    <abstract>Chemical characterisation data describing the precursors and cured products formed when reacting montmorillonite and illite clay precursors with sodium hydroxide solution at Na:Al molar ratios of 0-1.5 and 0-0.75.

Version 2 includes additional data for the mass spectrometry results.</abstract>
    <date>2019-02-07</date>
    <publisher>University of Bath</publisher>
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        <funder_name>Engineering and Physical Sciences Research Council</funder_name>
        <funder_id>https://doi.org/10.13039/501100000266</funder_id>
        <grant_id>EP/L016869/1</grant_id>
        <project_name>EPSRC Centre for Doctoral Training in the Decarbonisation of the Built Environment (DBE)</project_name>
      </item>
    </funding>
    <collection_method>Fig 1; Fig A2 - Atterberg plastic limit measurements were taken over a range of sodium hydroxide solution concentrations, based on BS 1377-2:1990.

Fig 2; Fig 3; Fig 4; Fig A1; Fig A3  - Powder X-ray diffraction (PXRD) analysis was done to identify phases with a Bruker D8 Advance instrument using monochromatic CuKalpha1 L3 (λ = 1.540598 Å) X-radiation and a Vantec superspeed detector. A step size of 0.016⁰(2θ) and step duration of 0.3 seconds were used.

Fig 7; Fig 8; Fig A5; - Thermogravimetric analysis (TGA) was done to characterise thermal behaviour, using a Setaram Setsys Evolution TGA over a range of 30 to 1000 °C at a heating rate of 10 °C/minute. An air atmosphere was used, with a flow rate of 20 ml/minute. A connected mass spectrometer was used (Pfeiffer Omni) to identify whether evolved gas species contained OH, H2O, CO or CO2. 

Fig 9; Fig 10 - Magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectra were measured for 27Al and 29Si to characterise coordination states, using a Varian VNMRS in direct excitation. Standards used were 1M aq. Al(NO3)3 for 27Al and tetramethylsilane for 29Si. Spin rates used were 12 kHz for 27Al and 6 kHz for 29Si, and frequencies used were 104.199 kHz for 27Al and 79.435 MHz for 29Si. Sample holders were 4mm width for 27Al and 6mm width for 29Si. 

Fig 11; Fig A6 - Fourier Transform Infrared Spectroscopy (FTIR) was done to characterise molecular bonding, using a Perkin-Elmer Frontier with a diamond Attenuated Total Reflectance (ATR) head. Spectra were collected over a range of 4000-600 cm-1 using a resolution of 4cm-1 and 5 scans per spectrum.</collection_method>
    <provenance>Fig 2; Fig 3; Fig 4; Fig A1; Fig A3 - Patterns were corrected for sample height shift by calibrating to the most intense quartz reflection (101) at 26.6 °(2θ).

Fig 3 - Le Bail extractions and Rietveld refinements of the structure were performed using JANA 2006 to extract the background signal.

Fig 11; Fig A6 - Corrections were made for ATR and background using Perkin-Elmer Spectrum software.</provenance>
    <collection_date>
      <date_from>2015-10-01</date_from>
      <date_to>2017-10-01</date_to>
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    <version>2</version>
    <doi>10.15125/BATH-00591</doi>
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        <link>https://doi.org/10.1016/j.clay.2018.09.011</link>
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