英语翻译High-performance concrete (HPC) is a complex mixture often containing 5 ± 10 different materials.Interaction between the various materials can cause wide variations in workability,which also depends on the specific materials and proporti

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英语翻译High-performance concrete (HPC) is a complex mixture often containing 5 ± 10 different materials.Interaction between the various materials can cause wide variations in workability,which also depends on the specific materials and proporti

英语翻译High-performance concrete (HPC) is a complex mixture often containing 5 ± 10 different materials.Interaction between the various materials can cause wide variations in workability,which also depends on the specific materials and proporti
英语翻译
High-performance concrete (HPC) is a complex mixture often containing 5 ± 10 different materials.Interaction between the various materials can cause wide variations in workability,which also depends on the specific materials and proportions used.Determining workability properties by testing concrete is not always practical.Extensive con-crete testing requires a large amount of materials and labor,which is expensive.There is,therefore,a need to predict the workability of concrete through a simpler,cheaper labora- tory approach.This paper describes an attempt to utilize rheological measurements in cement paste as a reasonable indicator of concrete workability.Concrete workability is defined,according to American Concrete Institute (ACI),as the ease of placement of concrete and is usually quantified by the result of the slump cone test.
Rheological tests on cement paste were used to select the type and dosage of mineral admixtures that improved concrete workability.The conclusions reached based on cement paste tests were validated by concrete slump tests.It was also deemed interesting to compare the fundamental parameters (yield stress and viscosity) measured with a fluid rheometer with the results from two commonly used empiri-cal tests,the minislump and the Marsh cone tests.If a relationship could be established,the empirical tests could be used to design materials for a given yield stress and viscosity or,at the very least,rank different materials base on yield stress or viscosity.
The decision to study the influence of mineral admixtures was dictated by the recent increase in use of mineral admixtures for improved concrete durability.Economics (lower cement requirement) and environmental considera-tions have also had a role in the growth of mineral admixture usage.The lower cement requirement also leads to a reduction in the amount of carbon dioxide generated by the production of cement,while the use of a mineral admixture utilizes a product that would ordinarily be bound for the land fill.Thus,there is a double environmental benefit from using mineral admixtures.

英语翻译High-performance concrete (HPC) is a complex mixture often containing 5 ± 10 different materials.Interaction between the various materials can cause wide variations in workability,which also depends on the specific materials and proporti
高性能混凝土(HPC)通常包含5±10种不同材料的复杂混合物.各种材料之间的相互作用可导致广泛的变异性,这也取决于具体的材料和使用比例.通过测试混凝土和易性的性质并不总是可行的确定.广泛的具体测试需要的材料和劳动量大,这是昂贵的.有,因此,需要通过一个简单的预测混凝土的和易性,更便宜的实验室的保守党的方法.本文描述了一个企图利用水泥浆体的流变测量混凝土的和易性合理的指标.混凝土工作性的定义,根据美国混凝土协会(ACI),作为混凝土浇筑的安逸和通常的坍落度试验结果的量化.对水泥浆体的流变试验,选择类型和矿物掺合料的用量,改善混凝土的和易性.得出的结论是基于水泥净浆试验混凝土的坍落度试验验证.它也被认为是比较有趣的基本参数(屈服应力和粘度)测量结果流体流变仪从两个常用的经验性CAL试验,minislump和Marsh筒试验.如果一个关系可以建立,实证检验,可用于设计的材料,对于一个给定的屈服应力和粘度或,至少,等级不同材料的屈服应力和粘度的基础上.决定研究矿物掺合料的影响取决于最近在使用改进的耐久性的混凝土矿物掺合料的增加.经济学(较低的水泥需求)和环境的考虑,也有下矿物掺合料的使用的增长作用.较低的水泥需求也导致的二氧化碳的水泥生产中产生的量减少,而矿物掺合料的使用,利用产品通常被运往填埋.因此,有使用矿物掺合料的双重环境效益.
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高性能混凝土(HPC)是一个复杂的混合物通常包含5±10个不同的材料。各种材料之间的相互作用会导致很大的变化在和易性,这也取决于具体的材料和使用比例。确定通过测试混凝土和易性属性并不总是实用。广泛的大测试需要大量的材料和劳动,是昂贵的。因此,需要预测混凝土的工作性通过一个更简单,更便宜labora——保守党的方法。本文描述了一个试图利用流变测量水泥膏作为一种合理的混凝土和易性的指标。混凝土和易性定...

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高性能混凝土(HPC)是一个复杂的混合物通常包含5±10个不同的材料。各种材料之间的相互作用会导致很大的变化在和易性,这也取决于具体的材料和使用比例。确定通过测试混凝土和易性属性并不总是实用。广泛的大测试需要大量的材料和劳动,是昂贵的。因此,需要预测混凝土的工作性通过一个更简单,更便宜labora——保守党的方法。本文描述了一个试图利用流变测量水泥膏作为一种合理的混凝土和易性的指标。混凝土和易性定义,根据美国混凝土协会(ACI),为便于放置混凝土和通常的量化结果的坍落度筒测试。在水泥浆流变测试是用来选择类型和用量,提高矿物掺合料的混凝土和易性。所作出的结论基于水泥粘贴测试验证了混凝土坍落度测试。也被认为是有趣的比较基本参数(屈服应力和粘度)与流体流变仪测量结果从两个常用的empiri-cal测试,minislump和沼泽锥测试。如果一个关系可以建立,实证测试可以用来设计材料对于一个给定的屈服应力和粘度,或至少等级不同的材料基础上屈服应力或粘度。决定研究矿物掺合料的影响是由最近增加的使用矿物掺合料的混凝土耐久性的改善。经济学(较低的水泥需求)和环境考虑对其也有作用的矿物掺合料的使用,增长低水泥需求也会导致减少二氧化碳的数量所产生的生产的水泥,而使用矿物掺合料利用产品通常都会前往土地填补。因此,有一个双环境受益于使用矿物掺合料。

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高性能混凝土(HPC)是一个复杂的混合物通常包含5±10个不同的材料。各种材料之间的相互作用会导致很大的变化在和易性,这也取决于具体的材料和使用比例。确定通过测试混凝土和易性属性并不总是实用。广泛的大测试需要大量的材料和劳动,是昂贵的。因此,需要预测混凝土的工作性通过一个简单的,...

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高性能混凝土(HPC)是一个复杂的混合物通常包含5±10个不同的材料。各种材料之间的相互作用会导致很大的变化在和易性,这也取决于具体的材料和使用比例。确定通过测试混凝土和易性属性并不总是实用。广泛的大测试需要大量的材料和劳动,是昂贵的。因此,需要预测混凝土的工作性通过一个简单的,

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