本文選題：噴射混凝土 + 小型濕噴機(jī)��； 參考：《人民長(zhǎng)江》2017年16期

【摘要】：為研究噴射混凝土性能更接近于現(xiàn)場(chǎng)實(shí)際濕噴工況(大型濕噴工藝)的室內(nèi)澆筑工藝,以9組C40纖維噴射混凝土為例,通過(guò)測(cè)試其回彈率、一次噴射厚度、凝結(jié)時(shí)間、密度、抗壓強(qiáng)度、彎曲韌性和干縮變形等性能指標(biāo),對(duì)比了在混凝土拌和物中摻加速凝劑快速攪拌振動(dòng)成型制作試件(攪拌振動(dòng)工藝)和應(yīng)用小型濕噴機(jī)噴射施工(小型濕噴工藝)兩種工藝下所得混凝土性能之間的差異。結(jié)果表明:與攪拌振動(dòng)工藝相比,小型濕噴工藝成型混凝土試件的凝結(jié)時(shí)間、密度、抗壓強(qiáng)度與大型濕噴工藝更吻合;小型濕噴工藝還能測(cè)試回彈率、一次噴射厚度,可用于評(píng)價(jià)濕噴混凝土的可噴性。
[Abstract]:In order to study the indoor pouring process in which the performance of sprayed concrete is closer to the actual wet jet condition (large wet jet process), 9 groups of C40 fiber sprayed concrete are taken as examples. The springback rate, the thickness of the primary spray, the setting time and the density of the concrete are tested. Compressive strength, flexural toughness and dry shrinkage deformation, etc. The difference between the performance of concrete made by rapid agitation vibration molding (agitation vibration process) and spray construction (small wet jet process) by using small wet jet machine in concrete mixture is compared in this paper. The results show that the setting time, density and compressive strength of concrete specimen formed by small wet jet process are more consistent with those of large wet jet process, and the springback rate and the thickness of single spray can be measured by small wet jet process. It can be used to evaluate the jetting ability of wet shotcreting concrete.
【作者單位】： 南京水利科學(xué)研究院水文水資源與水利工程科學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)水利水電第七工程局有限公司;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃課題(2016YFC0401610) 江蘇省自然科學(xué)基金項(xiàng)目(BK20151072) 中央級(jí)公益性科研院所基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(Y416003) 中國(guó)水利水電第七工程局有限公司項(xiàng)目(2015-458-20)
【分類號(hào)】：TU528.53
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本文編號(hào)：2060655