Geopolymers Based on Phosphoric Acid and Illito-Kaolinitic Clay

<div>X-ray patterns of calcined clay and the obtained geopolymers <svg height="10.2019pt" id="M12" style="vertical-align:-0.2455091pt" version="1.1" viewbox="-0.0498162 -9.95639 15.1249 10.2019" width="15.1249pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M692 302H438V274C537 267 543 260 543 188V103C543 61 531 48 511 37C489 26 458 20 424 20C231 20 146 188 146 333C146 517 258 630 411 630C507 630 582 597 606 474L634 480C627 546 622 601 619 636C586 643 510 665 426 665C230 665 44 552 44 321C44 122 191 -15 411 -15C491 -15 573 7 635 21C629 49 628 81 628 116V202C628 261 632 266 692 274V302Z" id="g121-69"></path><glyph.data ascent="989" descent="-360" horiz-adv-x="715" vert-adv-y="715"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,9.295,-5.741)"><path d="M545 403C545 425 527 451 498 451C448 451 400 404 312 286L290 341C262 412 246 451 219 451C182 451 138 404 92 345L112 323C152 368 169 378 181 378C192 378 201 359 216 321L257 214C184 115 142 69 113 69C102 69 93 73 88 79S78 89 68 89C47 89 24 61 24 40C24 8 49 -12 75 -12C125 -12 175 31 271 175L312 64C330 15 357 -12 382 -12C421 -12 475 35 515 98L496 121C466 88 439 62 420 62C402 62 384 92 363 147L325 247C349 280 374 309 397 333C422 361 446 381 462 381C471 381 481 374 488 366C493 360 499 357 505 357C521 357 545 380 545 403Z" id="g50-121"></path><glyph.data ascent="3443" descent="-2856" horiz-adv-x="569" vert-adv-y="569"></glyph.data></g></svg> with different Si/P molar ratios (21 curing ages). Q: quartz (00-046-1045), H: hematite (00-024-0072), I: illite (00-024-0495), and A: aluminum phosphate (00-084-0853).</div>

Advances in Materials Science and Engineering

Geopolymers Based on Phosphoric Acid and Illito-Kaolinitic Clay

Figure 3