Burning coal is nasty business, concentrating all kinds of toxic metals and resulting in potentially deadly fly ash.
烧煤是一件危害极大的事，释放各种有毒金属，并导致潜在的致命灰尘。
Canadian geologists have found evidence of coal char — "remarkably similar to modern coal fly ash" in their own words — in ancient Arctic rocks.
加拿大地质学家们在古老的北极岩石中发现了煤炭的证据，“象极了现代的煤灰”这是他们的原话。
At one extreme, the scientists estimated fly ash radiation in individuals' bones at around 18 millirems (thousandths of a rem, a unit for measuring doses of ionizing radiation) a year.
在极端情况下，科学家估计浮尘的放射性在个人的骨骼中的积累可以达到每年18毫雷姆(千分之一雷姆，衡量电离辐射剂量的单位)。
High performance fly ash concrete is a kind of green building materials with vast development foreground.
粉煤灰高性能混凝土是具有广阔发展前景的绿色建材。
The optimization content of the fly ash was less than 40% from the strength consideration.
从强度方面考虑，粉煤灰的掺量最好在40%以下。
The paper also presents some constructive opinions for research and use of fly ash concrete.
本文还对大掺量粉煤灰砼的研究及应用提出了一些建设性意见。
Effect of fly ash on the workability, strength and hydration heat of high belite cement and concrete.
粉煤灰对高贝利特水泥和混凝土的工作性、强度及水化热的影响。
This paper presents an experimental study on acoustic agglomeration of coal-fired fly ash at low frequencies.
通过实验研究了低频下燃煤飞灰的声波团聚。
Adding admixture, fly ash, organic fiber into raw materials is an important way to get high-performance concrete.
在原材料中合理掺入外加剂、粉煤灰、有机纤维等配料是获得高性能混凝土的重要途径。
Regarding environment and comprehensive utilization of slag, fly ash remelt system of wet bottom boiler is positive.
液态排渣炉飞灰复熔系统对环保和炉渣综合利用等具有积极意义。
The fly ash, granulated blast furnace slag and natural zeolite powder are the mineral additions for concrete mixing.
粉煤灰、粒化高炉矿渣粉和天然沸石粉是拌制混凝土的矿物掺合料。
The cement stabilized aggregate and the lime fly ash stabilized aggregate are two typical semi-rigid base course materials.
水泥稳定粒料和二灰(石灰、粉煤灰)稳定粒料是两种典型的和常用的半刚性基层材料。
The research of this paper is significant for the further development and application of fly ash in self-compacting concrete.
本文的研究成果对粉煤灰在自密实混凝土中的应用有着深远的意义。
It is well known that fly ash is not only a solid wastage of burning coal but also an available and highly valuable resource.
粉煤灰是煤炭资源利用产生的固体废物，同时也是一种利用价值很高的再生资源。
Carbon content in fly ash is a major index, which reflects the combustion efficiency of a pulverized coal-fired utility boiler.
飞灰含碳量是反映电站煤粉锅炉燃烧效率的一个重要指标。
Laboratory test showed that: In consideration of slump, the optimization content of the fly ash was around 30% or more than 30%.
试验结果显示：从坍落度方面考虑，粉煤灰的掺量应该在30%左右或大于30%为最佳。
Activator can enhance remarkably the activity of fly ash and accelerate secondary hydration reaction of high fly ash content concrete.
激发剂能显著提高粉煤灰的活性，加速高掺量粉煤灰二次水化反应。
The dry density, bending strength and compressive strength of foam concrete block increased with the increasing of the amount of fly ash.
粉煤灰加入量增加，泡沫混凝土砌块的干密度递增，抗折和抗压强度增大。
Especially in paper making field, fly ash superfine fibre can replace wood pulp, which can save log consumption and protect woods resource.
尤其在造纸领域，粉煤灰超细纤维可部分取代木浆配抄纸品，节省原木耗费，对保护森林资源起积极作用。
The activated fly ash, when used as cement blend, can either improve the quality of the cement or heighten the ratio of fly ash in the cement.
经活化的粉煤灰用作水泥混合材可提高水泥标号或水泥中粉煤灰的掺量。
Based on the tests, the article describes a new type of steam-cured brick with high-mixed fly ash from sea, which has been put into production.
我站在研究海排粉煤灰的基础上，经过大量试验，成功研制出了高掺量海排粉煤灰蒸养砖，并已投入生产。
This research result has the important leading meaning in design and construction of cement-lime-fly ash treated crushed stone semi-rigid base.
本论文研究成果对水泥石灰粉煤灰稳定碎石基层设计和施工均具有较为重要的指导意义。
Chesion and plasticity of steel slag concrete is increased, its fluidity is improved and expansibility is decreased owing to addition of fly ash.
掺入粉煤灰将增大混凝土的粘聚性和可塑性，改善混凝土的和易性，减小混凝土的膨胀性。
Lime-fly ash loess, composed of fly ash, lime and loess, is a new material in subgrade backfill to take the place of the (traditional) lime soil.
二灰黄土是利用石灰、粉煤灰与土料混合作为回填土的一种新型材料，用以代替传统的灰土或素填土。
The results showed that adding slag powder, fly ash, silica fume to Portland cement can improve the comprehensive performance of marine concrete.
研究结果表明，在硅酸盐水泥中掺加矿粉、粉煤灰、硅灰等混合材料可以改善海工混凝土的综合性能。
In this paper the usability of a quarry dust limestone powder in concrete applications substituted for fly ash as mineral admixture is investigated.
为了有效利用石粉资源，本文对石灰岩石粉代替粉煤灰作混凝土矿物掺合料的可用性进行了研究。
This paper emphasizes the theoretical foundation, construction technology and practical effect of high-grade road-surface concrete mixed with fly ash.
为了更好地在路面推广应用粉煤灰，本文着重介绍在高等级路面砼中掺用粉煤灰的理论依据，施工技术及工程应用效果。
This paper emphasizes the theoretical foundation, construction technology and practical effect of high-grade road-surface concrete mixed with fly ash.
为了更好地在路面推广应用粉煤灰，本文着重介绍在高等级路面砼中掺用粉煤灰的理论依据，施工技术及工程应用效果。
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