تُستخدم كسارة الفك PEW في الغالب لإنتاج قطع كبيرة من الخام، مع حجم جزيئات التغذية: 0-720 مم.
اقرأ المزيد
تستخدم كسارة التأثير PFW في الغالب لمعالجة الصخور اللينة، وحجم جزيئات التغذية هو: 0-350 مم.
اقرأ المزيد
تستخدم كسارة المخروطية HST في مرحلة التكسير المتوسطة للصخور الصلبة، مع حجم جزيئات التغذية: 0-560 مم.
اقرأ المزيد
مزودة بمحطات تكسير خشنة ومتوسطة ودقيقة أكثر كفاءة، ومحطات متنقلة لتشكيل الرمل والغربلة، وتغطي القدرة الإنتاجية 100-500 طن/ساعة.
اقرأ المزيد
32;Benign design of alkali-activated slag/FA geopolymer paste has attracted increasing attention for optimizing its service performance. Therefore, the replacement of fly ash (FA) with 10 wt% silica fume (SF) is investigated by mechanical strength after freeze–thawing cycles and microstructure characterization. The results show that an
سؤال
32;1. Introduction. Low-strength soil layers are frequently encountered in road construction, and they have a significant impact on various phases of construction design [1,2,3].Another issue in civil engineering is clayey soil [4,5].Clayey soil is a global issue, causing several difficulties for civil engineers, building enterprises, and property owners
سؤال
[PDF]B. Meeting the 7 or 28-day strength activity index will indicate specification compliance. C. If the mineral admixture will constitute more than 20 % by weight of the cementitious material in the project mix. design, thetest specimens for autoclave expansion shall contain that anticipated percentage.
سؤال
32;In the field of construction, the workability of concrete, specifically its ability to flow, is one of the most concerned parameters. In recent times, the integration of artificial intelligence (AI) has brought about a significant transformation in the construction industry, resulting in enhanced efficiency, precision, and innovation. Considering these aspects,
سؤال
32;The aim of this investigation is to examine the influence of ground granulated blast furnace slag (slag) content on the performance, at the fresh and hardened states, of fly ash (F A) based self
سؤال
With cement being the costliest ingredient, substituting fly ash or slag can help maintain a stronger mix at a lower cost. Fly ash and Slag will typically be 18% cheaper than Portland cement. When a mix includes 20% fly ash, this will provide savings of 3.5% in cost. The advantage of slag is its ability to substitute more of cement.
سؤال
32;The results showed the following: (1) Optimized formulation could be achieved at coal gangue powder: slag: fly ash ratio of 5:4:1, 1.64 M sodium silicate modulus, 6.7% sodium silicate and 5% Na 2 O. The LCGGM possesses clean production, high fluidity, fast setting, low bleeding rate, high compressive strength and seepage pressure,
سؤال
32;Composites that use fly ash and slag as alkali-activated materials instead of cement can overcome the defects and negative effects of alkali-activated cementitious materials prepared with the use of an alkali-activated material. In this study, fly ash and slag were used as raw materials to prepare alkali-activated composite cementitious materials.
سؤال
32;This paper investigates the effects of nano-silica incorporation on an eco-friendly alkali activated slag–fly ash blends. The fresh behaviors, reaction kinetics, gel structure, porosity and strength of samples with different nano-silica contents and slag/fly ash ratios are analyzed. The results indicate that as the nano-silica content
سؤال
The SCA is proud to promote the use of slag cement to ready mix producers and industry professionals who understand the durable and sustainable benefits of slag cement in producing high quality concrete. Professionals agree, where other cementitious materials fail to produce consistent results, slag cement produces a more workable concrete with
سؤال
With cement being the costliest ingredient, substituting fly ash or slag can help maintain a stronger mix at a lower cost. Fly ash and Slag will typically be 18% cheaper than Portland cement. When a mix includes 20% fly
سؤال
32;Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.
سؤال32;Engineered cementitious composites (ECCs) are a special class of ultra-ductile fiber-reinforced cementitious composites containing a significant amount of short discontinuous fibers. The distinctive tensile strain-hardening behavior of ECCs is the result of a systematic design based on the micromechanics of the fiber, matrix, and fiber–matrix
سؤال
32;Low-calcium (Class F) fly ash and ground granulated blast-furnace slag were used as precursors, the chemical compositions of which characterised using X-ray fluorescence spectrometry (XRF) are given in Table 1.The particle size distribution of fly ash and slag is presented in Fig. 1.As per the previous studies [39, 40], a mixture of 10 M
سؤال
[PDF]Fly ash, ground granulated blast-furnace slag, silica fume, and natural pozzolans, such as calcined shale, calcined clay or metakaolin, are materials that, when used in conjunc-tion with portland or blended cement, contribute to the properties of the hardened concrete through hydraulic or pozzolanic activity or both (Fig. 3-1).
سؤال
32;1. Introduction. Concrete remains the most popular construction material [60], and its use is expected to continue in the years to come.One significant advantage of concrete is the cost-effectiveness of its constituent materials, rendering it an ideal choice for mass production [34] and broad-ranging applications.Concrete's appeal further stems
سؤال
32;The FA and GGBS were provided by a material enterprise in Zhengzhou and Gongyi (Henan, China), respectively. The particle densities of FA and GGBS were 2.42 and 2.93 g/cm 3, which were measured referred to the Chinese Standards GB/T 208–2014 [43], The chemical compositions were listed in Table 1 and the mineral phase of FA and
سؤال32;Environmental contamination can be avoided by producing sustainable concrete using innovative technology like self-compacting concrete (SCC) with various industrial wastes. In this study, an experimental investigation was carried out on SCC through Taguchi design. The parameters considered in the design of the experiment
سؤال
32;In this study, “alkali-activated slag concrete” (AASC) and “alkali-activated slag–fly-ash concrete” (AASFAC) were developed which was then related with OPC concrete of alike design grade. GGBS and fly-ash were used in the mix, in ratio 100:0, 75:25, 50:50, and 25:75 as the binder ingredient. The modulus of alkaline activator was
سؤال
Alkali-activated slag and fly ash (AASF) materials are emerging as promising alternatives to conventional Portland cement. Despite the superior mechanical properties of AASF materials, they are known to show large autogenous shrinkage, which hinders the wide application of these eco-friendly materials in infrastructure. To mitigate the autogenous
سؤال
32;Slag is a byproduct that results from the smelting process of various ores, such as iron, copper, and lead. When these ores are heated to extract the desired metal, slag is formed as molten, which is later cooled and solidified. On the other hand, fly ash is a byproduct of burning pulverized coal in power plants.
سؤال
32;The statistical description of the calculated reactivity modulus of the fly ash and slag, together with other input variables, are shown in Table 1.The constraints for multi-objective optimization of geopolymers will be set according to Table 1.The histogram of the input features is illustrated in Fig. 1.It can be observed that each input variable changes
سؤال
32;It is evident from Table 2 that the compressive strength and 2-h consistency-loss ratio of the mortar prepared from industrial solid waste were slightly inferior to those of commercial mortar but still met the requirements of the national standard GB/T 25181-2010. There were no significant differences in the setting times and water
سؤال
32;Current demand for highly sustainable concrete, e.g. alkali-activated fly ash-slag (AAFS) concrete, urges understanding the links between microstructure and micromechanical properties of this binder. This paper presents a systematic investigation into the microstructure and micromechanical properties of AAFS paste from nano-scale
سؤال
32;1. Introduction. Portland cement is the main binding material in concrete, which is the most widely used material in the world [1].Cement production is a key source of CO 2 emissions, due in part to the significant reliance on coal and petroleum coke to fuel the kilns for clinker production and in part to the calcination of limestone [2].Statistics
سؤال
:Concrete and CementCivil EngineeringEffect of Fly Ash On ConcreteChina: Lushan Conch has completed preparation for a project to use slag and fly ash. The subsidiary of Anhui Conch said that it has completed transport bidding work and had
سؤال
32;In response to the high carbon emissions and energy consumption of traditional cement curing agents, in this paper, we propose a fly ash/slag-based geopolymer as an alternative to cement for stabilizing
سؤال
PDF | On Jul 4, 2016, K. Arbi and others published DURABILITY OF ALKALI-ACTIVATED FLY ASH AND SLAG CONCRETE | Find, read and cite all the research you need on ResearchGate
سؤال
176;C due to the humidity it contained. Blast furnace slag (oven slag) and fly ash are provided in appropriate sizes to be used in the study. Sewage sludge is prepared by the pre-treatment applied. Table 1 gives the mixing ratios and the mixture amounts prepared over 2 kg.
سؤال32;In order to achieve the goal of effectively utilizing solid waste resources and improving mining stability, it is necessary to incorporate various types of solid wastes in the production of cemented backfill. For investigating the compressive strength and damage characteristics of Cement–Fly Ash–Slag–Gangue (CFSG) cemented backfill under
سؤال
تتمتع شركتنا بتاريخ يمتد لأكثر من 30 عامًا وشكلت تدريجيًا نظامًا كاملاً للبحث والتطوير والإنتاج والمبيعات والخدمة لتلبية احتياجات الإنتاج للمستخدمين بشكل أفضل.
