Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-cracking concrete and production process thereof
The invention discloses anti-cracking concrete, which is prepared by mixing the following components in parts by weight: 240-315 parts of cement, 635-705 parts of gravels, 410-515 parts of modified recycled aggregate, 715-835 parts of sand, 140-185 parts of water, 5-9 parts of a water reducing agent, 80-125 parts of fly ash, 18-25 parts of borax and 25-35 parts of modified combined fibers, whereinthe preparation method of the modified recycled aggregate comprises the following steps: mixing 65-75 parts by weight of water glass with a mass concentration of 5%, 12-18 parts by weight of an organic silicon resin and 4-8 parts by weight of borax to obtain an aggregate modification solution, soaking recycled aggregate into the aggregate modification solution for 30-40 minutes, taking out, and draining to obtain the modified recycled aggregate, and the preparation method of the modified combined fibers comprises the following steps: mixing 15-27 parts by weight of polyvinyl alcohol and 35-50parts by weight of water, carrying out heating melting, adding 2.4-3.2 parts by weight of polyethylene glycol, stirring to obtain a fiber modified solution, uniformly mixing polypropylene fibers andcarbon fibers according to a weight part ratio of (4-5):1, immersing into the fiber modified solution for 1-2 hours, taking out, and draining to obtain modified combined fibers. According to the invention, the anti-cracking concrete has characteristics of improved impact resistance, improved splitting strength and cracking reducing.
本发明公开了一种防开裂混凝土，按重量份计，由以下组分混合制得：水泥240‑315份、碎石635‑705份、改性再生骨料410‑515份、砂715‑835份、水140‑185份、减水剂5‑9份、粉煤灰80‑125份、硼砂18‑25份、改性组合纤维25‑35份；改性再生骨料的制备包括：按重量份数，将质量浓度为5%的水玻璃65‑75份、有机硅树脂12‑18份、硼砂4‑8份混合得骨料改性液，将再生骨料浸入骨料改性液30‑40min，取出沥干即得；改性组合纤维的制备包括：按重量份数，将聚乙烯醇15‑27份、水35‑50份混合，加热融化后，加入聚乙二醇2.4‑3.2份搅拌得纤维改性液，将聚丙烯纤维和碳纤维以重量份比为4‑5:1的比例混匀后浸入纤维改性液中1‑2h，取出沥干得改性组合纤维；提高了混凝土的抗冲击性能和劈裂强度，减轻了混凝土的开裂现象。
Anti-cracking concrete and production process thereof
The invention discloses anti-cracking concrete, which is prepared by mixing the following components in parts by weight: 240-315 parts of cement, 635-705 parts of gravels, 410-515 parts of modified recycled aggregate, 715-835 parts of sand, 140-185 parts of water, 5-9 parts of a water reducing agent, 80-125 parts of fly ash, 18-25 parts of borax and 25-35 parts of modified combined fibers, whereinthe preparation method of the modified recycled aggregate comprises the following steps: mixing 65-75 parts by weight of water glass with a mass concentration of 5%, 12-18 parts by weight of an organic silicon resin and 4-8 parts by weight of borax to obtain an aggregate modification solution, soaking recycled aggregate into the aggregate modification solution for 30-40 minutes, taking out, and draining to obtain the modified recycled aggregate, and the preparation method of the modified combined fibers comprises the following steps: mixing 15-27 parts by weight of polyvinyl alcohol and 35-50parts by weight of water, carrying out heating melting, adding 2.4-3.2 parts by weight of polyethylene glycol, stirring to obtain a fiber modified solution, uniformly mixing polypropylene fibers andcarbon fibers according to a weight part ratio of (4-5):1, immersing into the fiber modified solution for 1-2 hours, taking out, and draining to obtain modified combined fibers. According to the invention, the anti-cracking concrete has characteristics of improved impact resistance, improved splitting strength and cracking reducing.
本发明公开了一种防开裂混凝土，按重量份计，由以下组分混合制得：水泥240‑315份、碎石635‑705份、改性再生骨料410‑515份、砂715‑835份、水140‑185份、减水剂5‑9份、粉煤灰80‑125份、硼砂18‑25份、改性组合纤维25‑35份；改性再生骨料的制备包括：按重量份数，将质量浓度为5%的水玻璃65‑75份、有机硅树脂12‑18份、硼砂4‑8份混合得骨料改性液，将再生骨料浸入骨料改性液30‑40min，取出沥干即得；改性组合纤维的制备包括：按重量份数，将聚乙烯醇15‑27份、水35‑50份混合，加热融化后，加入聚乙二醇2.4‑3.2份搅拌得纤维改性液，将聚丙烯纤维和碳纤维以重量份比为4‑5:1的比例混匀后浸入纤维改性液中1‑2h，取出沥干得改性组合纤维；提高了混凝土的抗冲击性能和劈裂强度，减轻了混凝土的开裂现象。
Anti-cracking concrete and production process thereof
一种防开裂混凝土及其生产工艺
SHI SHUNCAI (Autor:in) / MA JINGSHEN (Autor:in) / FEI KAI (Autor:in) / QIN SHUDONG (Autor:in) / TAO GUIDONG (Autor:in) / NA JINLAN (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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