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- If the thickening layer ceramic choose concrete, it than ordinary concrete results better noise insulation. 如果在加厚层中选用陶粒混凝土,那就比普通混凝土保温隔音效果更好。
- GB/T 50081-2002 Standard for Test Method of Mechanical Properties on Ordinary Concrete[S]. GB/T 50081-2002普通混凝土力学性能试验方法标准[S].;北京:中国建筑工业出版社;2002
- The water-cement ratio has great influence on the strength of the high performance concrete as the same as the ordinary concrete. 高性能混凝土和普通混凝土一样,水胶比对混凝土强度影响大。
- Polypropylene fibrous concrete have a lot of advantages compared with ordinary concrete as a new kind of construction material. 聚丙烯纤维混凝土作为一种新型的建筑材料与普通混凝土相比有很多优点。
- The results show that carbonation resistance of air-entrained concrete are evidently better than that of ordinary concrete at equal strength. 结果表明:在同强度条件下,引气型混凝土的抗碳化性能显著高于普通混凝土。
- It is feasible to determine permeability of ordinary concrete by measuring electric conduction of the concrete by alternating current. 用交流电测量普通混凝土的电导并以此反映混凝土的渗透性是可行的。
- When the electrothermal layer of carbon fiber reinforced concrete (CFRC) is bonded with the ordinary concrete layer, thermal stress may bright out. 当碳纤维水泥基复合材料(CFRC)电热层与混凝土层固定在一起并且通电使之发热时,电热层的热膨胀受到限制将会产生热应力。
- The test result of change laws of weight indicates that, to the ordinary concrete under sulfate attack, the rate of change is quickly. 各种混凝土的质量变化规律表明,对于普通混凝土,其受到侵蚀后质量变化幅度较大,前期增长快,后期衰减也快,但在试验周期内较初始质量没有损失;
- Compared with ordinary concrete caisson pile,the technology may save investment and construction period greatly,and the economic benefit is notable. 与普通混凝土灌注桩相比,该技术可节约大量资金,缩短工期,经济效益十分显著。
- Compared with ordinary concrete in the same grade, HSLC’s toughness and elastic modulus are low and its brittleness is relatively high. 因此,如何提高其强度和改善其脆性成为土木工程领域研究的热点。
- The results showed that the strength of dolomite chip concrete is higher,and the modulus of elasticity is slightly higher than that of ordinary concrete. 结果表明 :石屑混凝土的强度比普通混凝土高 ,弹性模量略大于普通混凝土 ;
- Experimental study shows the corrosion resistance of this kind of concrete is about3-4 times of the ordinary concrete since the osmosis ability of chloride ions in this concrete was greatly reduced. 文中简介了大掺量矿渣微粉抗海水腐蚀混凝土在一些工程中的应用情况。
- The compressive strength increasing coefficient of clay concrete is the same as that of ordinary concrete at 7d,but the coefficient of 90d is much higher than that of ordinary concrete. 黏土混凝土抗压强度随龄期增长系数与普通混凝土在7d时基本一致,90d则明显高于普通混凝土;
- The effects of hardened cement on the compressive strength of autoclaved waste concrete samples of fine powder are less because the amount of hardened cement in ordinary concrete is more than 12.5 wt% (mass ratio). 由于普通混凝土的水泥用量按水化水泥量计算均超过12.;5%25;普通混凝土磨细制成蒸压试样的强度受废混凝土中水泥石量的影响很小。
- In this paper, the pier-wall models respectively built with steel-fiber concrete and ordinary concrete were tested for revealing their early bebaviors of thermal strain and thermal stress caused by adiabatic heating. 为此进行了钢纤维混凝土和普通混凝土2个墩墙结构的模型试验,比较了二者的温度及温度变形的特性。
- By comparison to ordinary concrete,the carbonation and steel corrosion of dolomite chip concrete are equal to those of an ordinary one,and its impermeability and freeze|thaw resistance are better. 石屑混凝土的抗渗性和抗冻性明显要好于普通混凝土 ,碳化和钢筋锈蚀性能与普通混凝土相当。
- It is indicated that the pozzolanic activity of the rice husk ash is higher than that of pelletized silica fume, resulting to increase of strength for ordinary concrete and high strength concrete. 活性试验表明,低温稻壳灰火山灰活性超过造粒硅灰,对普通混凝土和高强混凝土都具有强烈的增强作用。
- The carbonation performances and gas permeability of four types of concrete(ordinary concrete,fly ash concrete,air-entrained concrete and fly ash airentrained concrete) were studied in this paper. 研究了普通混凝土、粉煤灰混凝土、引气混凝土和粉煤灰引气混凝土等四类混凝土的抗碳化性能和气体渗透性能。
- After the analysis and the research,one kind of acid baths which is made of the ordinary concrete as the mainbody and lined with the granite flagstone had been voluntarily designed and manufactured. 经过分析和研究,自行设计制作了一种以普通混凝土为主体,内衬花岗岩石板的酸洗槽。
- Comparing with ordinary concrete, the area under stress-strain curve of RMC is much larger.It indicates that adding crumb rubber can significantly increase the toughness of concrete. 与基准试样相比,掺有橡胶粒子的RMC应力-应变曲线下的面积更大,表明掺加橡胶粒子可使混凝土的韧性大大增强。
