摻氣水泥 的英文怎麼說
中文拼音 [chānqìshuǐní]
摻氣水泥
英文
air-entraining cement-
The result of experiment shows that und er the conditions of proper ai r - entraining, concrete with 20 % fly ash has excellent frost - resistance. the frost - resistance of concrete with 55 % fly - ash which is admixed with united expansive agent ( uea ) has been improved greatly. the frost - resistance of sulfate aluminate cement concrete with high volume of fly - ash is dramatically lower than that of silicate cement concrete with the same volume of fly - ash
試驗結果表明：粉煤灰摻量為20的混凝土在適量引氣的條件下具有良好的抗鹽凍性能；粉煤灰摻量為55的混凝土在摻加uea膨脹劑后其抗鹽凍性能有明顯改善；大摻量粉煤灰硫鋁酸鹽水泥混凝土的抗鹽凍性大大低於同摻量的硅酸鹽水泥混凝土。Abstract : the result of experiment shows that und er the conditions of proper ai r - entraining, concrete with 20 % fly ash has excellent frost - resistance. the frost - resistance of concrete with 55 % fly - ash which is admixed with united expansive agent ( uea ) has been improved greatly. the frost - resistance of sulfate aluminate cement concrete with high volume of fly - ash is dramatically lower than that of silicate cement concrete with the same volume of fly - ash
文摘:試驗結果表明：粉煤灰摻量為20的混凝土在適量引氣的條件下具有良好的抗鹽凍性能；粉煤灰摻量為55的混凝土在摻加uea膨脹劑后其抗鹽凍性能有明顯改善；大摻量粉煤灰硫鋁酸鹽水泥混凝土的抗鹽凍性大大低於同摻量的硅酸鹽水泥混凝土。Mechanical performance, frost resistance and abrasion resistance of concrete with fly ash, air entraining agent and four kinds of inorganic salts including sodium sulfate, sodium nitrite, calcium nitrite and sodium chloride are mainly studied in this paper
本文研究了在路面水泥混凝土中摻入粉煤灰、引氣劑和四種無機鹽（ na2so4 、 nano2 、 ca （ no2 ） 2和nacl ）后，混凝土的力學性能、抗鹽凍剝蝕能力和耐磨性等性能的變化規律。The addition of aluminium powders induced cement mortar to produce a mount of pore, the existing of pore could block path of through pore, so increased cement mortar impermeability. the experiments results revealed that appropriate addition amount of aluminium powders in cement mortar was 0. 004 - 0. 005 wt %
氣泡的引入可以阻斷水泥石中的貫通孔的通路，從而增加其抗滲性能，通過試驗研究，鋁粉在水泥砂漿中的摻量以（ 0 . 004 0 . 005 ）為宜。Every day to this day i work d on the wreck, and with hard labour i loosen d some things so much with the crow, that the first blowing tide several casks floated out, and two of the seamens chests ; but the wind blowing from the shore, nothing came to land that day, but pieces of timber, and a hogshead which had some brazil pork in it, but the salt - water and the sand had spoil d it
我費盡力氣，用起貨鐵鉤撬鬆了一些東西。潮水一來，竟有幾只木桶和兩只水手箱子浮了出來。由於風是從岸上吹來的，那天飄到岸上的東西只有幾塊木料和一桶巴西豬肉，但那肉早被鹹水浸壞，且摻雜著泥沙，根本無法食用。The turbulent characteristics of high - velocity sediment - laden and aerated flow are more other than the clear water flow of single - phase and current of low speed. in a special circulating system with high velocity flow, some flow parameters such as boundary shear stress and pulsation pressure are measured. an investigation is made on the turbulent characteristics of the three - phase flow of water, air and sand
本文針對高速含沙摻氣水流的運動規律有別于低速水流及清水單相流，在自己研製的高速渾水循環系統中，通過對高速含沙摻氣水流壁面剪切應力和脈動壓強等參數的量測，分析了水沙氣三相流的紊動特性，探索了泥沙對固壁的磨蝕機理及減蝕措施，其主要內容包括以下幾個方面： 1The surface material is liable to erosion wear with high - velocity sediment - laden flow, hi this paper, sand wear mechanisms are discussed and some effects of significant flow factors on material wear are analyzed ; the possibility of preventing erosion wear with aeration is proposed ; based on test data, the formula for calculating the concrete material wall surface wear rate is derived. it is indicated that the wear rate is related to the air concentration, the strength of material, the flow velocity and the sediment content. it is shown that wear rate can be reduced with the help of flow aeration
分析了空蝕與磨蝕的不同物理特徵；探討了沙粒磨蝕機理，提出了影響磨蝕vi河海大學博士學位論文一的因素；研究了摻氣抗磨的可能性：建立了混凝土材料壁面磨蝕率的計算公式；說明含沙水流對固壁材料的磨蝕率隨摻氣濃度、材料強度的增大而減小，隨水流流速、含沙量的提高而增大；利用摻氣可有效地降低過流表面的泥沙磨蝕率。Mix mineral additive into concrete has great effect on the pore structure, especially the addition of sodium sulfate coarsening the pore structure enormously, and increase the total porosity. after mixing sodium sulfate, the chloride ion diffusion coefficient of air entraining concrete increased, impermeability reduced ; but mixing sodium nitrite and sodium chloride can
Na _ 2so _ 4摻入后，引氣混凝土的氯離子擴散系數增大，抗滲性降低;而nano _ 2和nacl能夠細化水泥石的孔結構，對混凝土的抗滲性有利，但提高幅度不大。分享友人