Cause Analysis and Countermeasures of Through Shakes in Foamed Concrete Subgrade

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="11"><hr/></td></tr><tr class="thead"><td class="align_left">Maintenance time</td><td class="align_center">Density</td><td class="align_center">Fitting compressive strength formula</td><td class="align_center">Fitting tensile strength (MPa)</td><td class="align_center">Average tensile strength (MPa)</td><td class="align_center">Tensile percentage</td><td class="align_center"><svg height="15.0208pt" id="M24" style="vertical-align:-3.429399pt" version="1.1" viewbox="-0.0498162 -11.5914 79.563 15.0208" width="79.563pt" 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="M584 650H137L131 622C214 614 217 612 200 521L125 127C109 41 101 35 23 28L17 0H288L294 28C201 35 193 42 209 128L242 309H348C440 309 442 300 443 226H471L510 422H482C452 354 449 348 357 348H251L295 575C302 609 304 615 338 615H426C502 615 517 604 526 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d="M619 670C619 686 593 712 555 712S459 686 410 634S335 504 320 430H250L219 400L222 388H312L258 73C223 -133 201 -166 187 -180C175 -191 158 -199 140 -199C123 -199 88 -188 74 -172C68 -166 63 -164 54 -171C38 -185 23 -201 23 -215C23 -236 60 -261 93 -261C122 -261 161 -247 207 -200C268 -138 300 -71 337 94C365 220 376 277 394 387L501 399L521 430H401C432 623 464 665 501 665C524 665 544 651 567 627C577 617 583 618 592 625C601 631 619 651 619 670Z"></path></g><g transform="matrix(.013,0,0,-0.013,59.636,0)"><path d="M275 270C275 450 212 609 64 710L45 686C145 604 203 442 203 270S147 -63 45 -147L64 -170C213 -68 275 89 275 270Z"></path></g><g transform="matrix(.013,0,0,-0.013,64.134,0)"><path d="M368 703H309L44 -163H104L368 703Z"></path></g><g transform="matrix(.013,0,0,-0.013,69.495,0)"><path d="M285 378C315 398 338 416 353 432C373 451 384 474 384 503C384 579 325 635 236 635H235C182 635 136 610 108 579L65 516L85 496C110 533 150 575 205 575C258 575 300 543 300 481C300 407 232 369 141 339L147 310C163 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60 378 92 358 148L321 250C341 279 369 310 389 332C417 363 439 382 456 382C466 382 475 376 481 368C486 361 492 358 496 358C513 358 536 381 536 404Z"></path></g><g transform="matrix(.013,0,0,-0.013,71.12,0)"><path d="M535 230V280H52V230H535Z"></path></g><g transform="matrix(.013,0,0,-0.013,81.656,0)"><path d="M241 635C89 635 35 457 35 312C35 153 89 -12 240 -12C390 -12 443 166 443 312C443 466 390 635 241 635ZM238 602C329 602 354 454 354 312C354 172 330 22 240 22C152 22 124 173 124 313S148 602 238 602Z"></path></g><g transform="matrix(.013,0,0,-0.013,87.896,0)"><path d="M113 -12C146 -12 170 11 170 46C170 78 146 103 114 103S58 78 58 46C58 11 82 -12 113 -12Z"></path></g><g transform="matrix(.013,0,0,-0.013,90.86,0)"><path d="M137 343C167 482 260 545 321 574C357 591 397 603 429 609L423 641C382 634 335 622 295 608C189 570 37 457 37 238C37 84 125 -12 242 -12C362 -12 447 89 447 209C447 311 374 393 267 393C247 393 226 386 204 376L137 343ZM227 337C318 337 361 256 361 173C361 105 336 22 258 22C176 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transform="matrix(.013,0,0,-0.013,109.582,0)"><path d="M153 550H386L412 615L406 623H120L82 318C104 327 142 338 184 338C294 338 347 275 347 187C347 112 305 39 221 39C160 39 119 71 97 89C88 97 80 96 71 90C59 80 50 67 49 57C48 45 52 36 66 23C80 9 123 -12 169 -12C221 -11 288 15 342 59C403 109 431 165 431 225C431 308 366 395 238 395C212 395 165 379 127 364L153 550Z"></path></g></svg></span></td><td class="align_center">0.3095</td><td class="align_center">1.5</td><td class="align_center">20.6</td><td class="align_center">6215</td><td class="align_center">3420 × 1000</td><td class="align_center"><b>0.00155</b></td><td class="align_center"><b>0.0016</b></td><td class="align_center">Crack is generated</td></tr><tr><td class="align_left">28 d</td><td class="align_center">560</td><td class="align_center"><span style="width: 116.286ptpx;"><svg height="11.7782pt" id="M26" style="vertical-align:-3.42938pt" version="1.1" viewbox="-0.0498162 -8.34882 116.286 11.7782" width="116.286pt" 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22C75 10 116 -12 162 -12C234 -12 424 62 424 224C424 297 373 359 285 376V378Z"></path></g></svg></span></td><td class="align_center">0.2647</td><td class="align_center">1.5</td><td class="align_center">17.6</td><td class="align_center">5315</td><td class="align_center">3420 × 1000</td><td class="align_center"><b>0.00154</b></td><td class="align_center"><b>0.0016</b></td><td class="align_center">Crack is generated</td></tr><tr class="table-tr"><td colspan="11"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Upward force of foamed concrete and stress calculation.</div>

Advances in Civil Engineering

tab5

Table 5

Table 5: Cause Analysis and Countermeasures of Through Shakes in Foamed Concrete Subgrade 