防凍工作 的英文怎麼說
中文拼音 [fángdònggōngzuò]
防凍工作
英文
deicing work-
It can be applied to break firm and freezed ground in civil engineering, substruction and civil air defence works and so on
土木工程及地下建築，人防施工等工作中摧毀堅固凍結的地層。This paper unfolds engineering disposition and theoretical research of negative temperature high performance concrete ( nthpc ) with the damage of many factors motivation, the project background based on qing - zang railway engineering, which is one of four - emphasized engineering during the tenth five - plan. due to the difference of environment of construction and service between nthpc and ordinary concrete, and therefore durability of nthpc is required to higher level. at a first, nthpc must avoid frozen damage at early age and possess anti - freezing property at later period, in order to meet engineering practicable application need, and this are two emphasized and difficult problems, as for nthpc ; by means of mechanism analysis about deicing - agent ingredient and anti - freezing at early period, adopting composite technique routine of mineral addition + anti - freezing element + water - reducer4 - air - entraining + anti - erosion of steel component etc, based on orthogonal experimental approach, fd - 1 composite functional admixtu re was manufactured, which has more property and orientation on qing - zang railway
負溫混凝土由於和普通混凝土在施工環境及服役環境上存在的差異，因此表現為比普通混凝土更為較高的耐久性要求；負溫混凝土首先要避免早期的凍害以及具備長期抗凍性能，才能夠滿足工程實際應用的要求，這也是負溫混凝土必須解決的兩大技術關鍵；通過對目前常用防凍劑組分作用機理的分析研究及混凝土早期防凍機理探討，採用礦物外加劑+防凍組分+高效減水劑+引氣+阻銹組分功能復合的技術路線，通過正交試驗設計復配了適應青藏鐵路工程要求的專用多功能復合型外加劑fd - 1 ；並在此基礎上配製不同等級負溫高性能混凝土，開展一系列包括硫酸鹽侵蝕、氯離子滲透、抗凍融循環、收縮及耐磨性等耐久性能研究；通過對fd - 1組分和摻量的調整，優化負溫混凝土在施工特性、力學指標和耐久性三個方面的兼容、協調性。Road crews are loading trucks with sand and anti - freeze chemicals, which they will apply to icy roadways as needed in the hours ahead
路障工作人員正用卡車裝載沙子與防凍劑，並用此鋪設路面，保證未來幾小時內重要路段的暢通。This operation can be applicable to very small - scale weather modification. ) a good example is the prevention of local frost damage to a garden or orchard by heating
（這種操作可適用於很小規模的人工影響天氣）這方面嚴格成功的例子是通過加熱防止花園和果園的局地霜凍。Two - addition technique of flying ash and silica fume can meliorate durability of concrete ; air - entraining admixture possesses anti - freezing, descending ice point, and improving workability, and thereof it should be used in concrete. but controlling its dosage is very important to avoid strength loss
發現粉煤灰和硅灰的雙摻技術能夠顯著改善混凝土的耐久性能，引氣劑具備防凍抗凍、抗滲及提高負溫混凝土工作性的優點，在負溫混凝土中應該加大使用范圍，但必須控制其摻量，確保強度損失較小。3. purpose : being used for wool, silk, polyamide fibre and the dye and printing of wool blending weaving products, it can also be used as food dyestuff, organic dye, industrial cleanser, civilian cleanser natatorium disinfection, toilet - cleaning substance, washing powder, fertilizer dye as the mark, antifreeze dying, lumber preservative, matchstick or matchhead dying, crop protect reagent insecticide, antiseptic and herbicide are usually dyed to be treated as warning, furthermore, it can be used as the dye of the paper, for making ink and colored pencil, sanitation epidemic prevention field and leather dying
三用途：用於羊毛蠶絲錦綸及羊毛混紡織物的染色及印花。也可以用作食品染料和有機顏料工業清潔劑民用清潔劑游泳池消毒潔廁用品洗衣粉肥料染色以作標識抗凍劑著色木材防腐劑火柴桿或頭著色農作物保護劑殺蟲劑殺菌劑除草劑經常被染色以示警告。也可用來紙張著色製做墨水及彩筆衛生防疫領域皮革著色。分享友人