Desenvolvimento e prototipagem de sistema de vedação vertical em solo-cimento autoadensável

Abstract

This study aims to develop and prototype a vertical gasket/seal/sealing system in self-compacting soil-cement (SCSC) incorporating Civil Construction waste (CCW), including its application in urban and rural constructions in the sustainable development of Mato Grosso. The following steps composed the research methodology: a) reference search of proportions and normative of SCSC using systematic review and patent search of the SCSC technology in a vertical gasket/seal/sealing system; b) definition of the proportion used through laboratory trials; c) physical prototyping of construction in full-scale; d) initial performance evaluation of the first 28 days after the unshape. Fibers of Synthetic polypropylene and Fiber of glass were used in the reference mix (REF01) to hold back shrinkage in the composites. Glass fibers proved to be more valuable in mitigating the dimensional variation of composite in the laboratory, with earnings of 29,76%, 30,58%, 41,86%, and 83,25% in shrinkage at 28 days (in the blends called MV00, MV01, MV02, and MV03), respectively, compared to REF01 (0% fiber). In the prototype, the MV01 trait was used, the most cost-effective in relation to mitigation of retraction versus the amount of glass fibers, also considering the compressive strength of the mixtures. The prototype executed used the technique of cast-in-place concrete walls with the blend prepared in concrete mixers, transport, and launching using auxiliary equipment and molding in aluminum molds. However, some pathologies appeared after the shrinkage process, with preeminence on retraction. The study's contributions dwell in the definition of the adjusted proportion that makes the complete filling of the molds, allowing the transposition of the laboratory products to the industry.