本文選題：粉煤灰 + 玄武巖纖維��； 參考：《安徽理工大學(xué)》2017年碩士論文

【摘要】：煤炭作為一種重要的資源,對國民經(jīng)濟起著至關(guān)重要的作用,主井和副井是煤炭采集中的重要的兩個結(jié)構(gòu),主井主要負擔(dān)礦井的運煤、進風(fēng)、礦井的安全出口,副井是一個用來升降工作人員、設(shè)備、材料和提升矸石的井筒,還可兼做入風(fēng)井和安全出口。施工組織設(shè)計是一個企業(yè)實現(xiàn)自己利益最大化的重要手段,通過編制施工組織設(shè)計,針對施工現(xiàn)場各種條件和工程所存在的問題制定相應(yīng)的對策,這樣做能夠保證工程質(zhì)量,同時保證在計劃工期內(nèi)完成工程,使工程在一個可控的范圍內(nèi)完工。本文主要介紹副井井塔的施工組織設(shè)計。粉煤灰作為一種工業(yè)廢料應(yīng)用在混凝土中,可以降低建筑物成本,玄武巖纖維作為一種新型纖維逐漸被應(yīng)用在土木、消防、交通等領(lǐng)域。本文針對現(xiàn)場的混凝土力學(xué)性能進行了試驗,研究了標(biāo)養(yǎng)和標(biāo)養(yǎng)后凍結(jié)條件下,不同玄武巖纖維摻量和不同粉煤灰摻量下玄武巖纖維粉煤灰混凝土的力學(xué)性能,其中,粉煤灰摻量為等量替代水泥摻量的0%、10%和15%,玄武巖纖維采用外摻的方式,分別為Okg/m3、2kg/m3、3kg/m3和4kg/m3,進行了標(biāo)養(yǎng)后凍結(jié)-15℃條件下,玄武巖纖維粉煤灰混凝土的單軸抗壓和劈裂抗拉強度試驗,并研究了標(biāo)養(yǎng)條件下,10%粉煤灰摻量下玄武巖纖維粉煤灰混凝土的抗折強度試驗。單軸抗壓和劈裂抗拉試驗結(jié)果表明,標(biāo)養(yǎng)后凍結(jié)-15℃條件下,當(dāng)粉煤灰摻量一定時,玄武巖纖維粉煤灰混凝土的單軸抗壓強度和劈裂抗拉強度均隨玄武巖纖維摻量的增加呈現(xiàn)出先增大后減小的趨勢,當(dāng)粉煤灰摻量為10%、玄武巖纖維摻量為2kg/m3時,玄武巖纖維粉煤灰混凝土的單軸抗壓強度最大,為44.8MPa,較普通混凝土提高了 6.71%,當(dāng)粉煤灰摻量為15%、玄武巖纖維摻量為3kg/m3時,玄武巖纖維粉煤灰混凝土的劈裂抗拉強度最大,較普通混凝土提高了 17.1%�？拐蹚姸仍囼灲Y(jié)果表明,玄武巖纖維粉煤灰混凝土的抗折強度隨玄武巖纖維摻量的增加,先增加后減少,其中,3kg/m3玄武巖纖維摻量時其抗折強度最優(yōu),為3.83MPa,較普通混凝土提高13.3%。
[Abstract]:As an important resource, coal plays an important role in the national economy. Main well and auxiliary well are two important structures in coal collection. The auxiliary well is a shaft for lifting workers, equipment, materials and gangue, and can be used as well as air shaft and safety exit. Construction organization design is an important means for an enterprise to maximize its own benefits. By compiling the construction organization design, corresponding countermeasures can be made in view of various conditions and problems existing in the construction site, so as to ensure the quality of the project. At the same time ensure that the project is completed within the planned time limit, so that the project is completed within a controllable range. This paper mainly introduces the construction organization design of auxiliary well tower. Fly ash is used in concrete as a kind of industrial waste, which can reduce the cost of buildings. As a new type of fiber, basalt fiber is gradually used in civil engineering, fire fighting, traffic and other fields. In this paper, the mechanical properties of basalt fiber fly ash concrete with different content of basalt fiber and different amount of fly ash are studied under the condition of standard culture and freezing after standard culture, and the mechanical properties of concrete with basalt fiber fly ash are studied in this paper. The content of fly ash is 0% and 15% of the same amount of cement instead of cement. Basalt fibers are mixed in the same way as Okg / m3kg / m3 and 4kg / m3 respectively. The uniaxial compressive strength and splitting tensile strength of basalt fiber fly ash concrete have been tested under the condition of freezing and freezing at -15 鈩，

本文編號：2052274