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In order to reduce the backfilling cost and assess the potential of SPC backfilling materials, a series of experiments were conducted to analyze the strength and hydration reaction mechanism of stone powder cement tailings backfill (SPCTB). The analysis was based on SPC and tailings, which were used as the gelling agent and the aggregate, respectively. The results showed that the strength of the backfill was greatly reduced at an early stage and slightly reduced in the final stages. The stone powder content was less than 15%, which met the requirement of mining procedure. The addition of stone powder reduced the content of adsorbed water and capillary water in the early stages, while it increased in the middle stages. The SiO<jats:sub>2<\/jats:sub> contained in stone powder reacted with the hydration products at later stages, which is the reason why the growth of strength is rapid between the groups with the addition of stone powder. The addition of stone powder improved the microstructure of backfill and produced a denser three\u2010dimensional (3D) network structure; however, the plane porosities of Groups A and B gradually increased with the increase in the content of stone powder. The cement powder mixed appropriately with the stone power could meet the strength requirement and reduce the cost of backfilling materials.<\/jats:p>","DOI":"10.1155\/2018\/8651239","type":"journal-article","created":{"date-parts":[[2018,11,13]],"date-time":"2018-11-13T23:46:21Z","timestamp":1542152781000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Strength Characteristics and the Reaction Mechanism of Stone Powder Cement Tailings Backfill"],"prefix":"10.1155","volume":"2018","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1293-6829","authenticated-orcid":false,"given":"Jianhua","family":"Hu","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9814-834X","authenticated-orcid":false,"given":"Qifan","family":"Ren","sequence":"additional","affiliation":[]},{"given":"Quan","family":"Jiang","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1840-5298","authenticated-orcid":false,"given":"Rugao","family":"Gao","sequence":"additional","affiliation":[]},{"given":"Long","family":"Zhang","sequence":"additional","affiliation":[]},{"given":"Zhouquan","family":"Luo","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2018,11,13]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10163-010-0297-6"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.1617\/s11527-016-0979-1"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.conbuildmat.2017.11.108"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1002\/suco.201700254"},{"key":"e_1_2_9_5_2","unstructured":"RamezanianpourA. 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