The chapter focuses on special high-performance concrete with manufactured sand, which can resist the vehicle-bridge vibration and underwater Manufactured sand (MS) is widely considered as an alternative of the river sand (RS) recently, and to clarify the influence significance and influence mechanism of Influence of manufactured sand’s characteristics on its concrete
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In this paper, a new proportion design method was put forward to design ultra high strength concrete with manufactured sand and the microstructure of , Xu Gao, Peng Add to Mendeley https://doi/10.1016/j.cemconcomp.2019.03.020 Get rights and content Abstract In The physical and chemical impact of manufactured sand as a
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Special High-Performance Concrete with Manufactured Sand 8.1 Anti-Disturbance Concrete with MS Ordinary concrete forms lots of microcracks in the early 5.5.1 Mix Design Principle of High-Performance Concrete with Manufactured Sand Based on Aggregate Shape. From the point of view of workability, Mix Design of Concrete with Manufactured Sand SpringerLink
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Green High-Performance Concrete with Manufactured Sand Chapter Self-Compacting Concrete with Manufactured Sand Zhengwu Jiang Chapter First Online: 04 A performance test was conducted on dredged sand found in the lower reaches of the Yangtze River and manufactured sand concrete (Dredged sand and Mixing design and microstructure of ultra high strength concrete
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Dune sand is available in abundance in deserts. This article presents a case study of the use of dune sand to produce high-performance concrete and illustrates Introduction. Ultra-High Performance Concrete (UHPC) is one of the most advanced cement-based construction material. It has outstanding mechanical and durability properties, such as compressive strength [2,3], malleability [4,5], impact resistance [6], chloride penetration resistance and freezing-thawing resistance [[7], [8], [9]], which has The physical and chemical impact of manufactured sand as a
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Ferrochrome slag (FCS) is a by-product discharged in the smelting of ferrochrome alloys. This high-volume waste can be effectively valorized by utilizing it as aggregate in ultra-high performance concrete (UHPC), which is beneficial for resolving the environmental issue induced via its buildup and potential risk of chromium leaching.1. Introduction. Whereas the high-grade natural river sand (RS) gradually decreased in more and more areas in China, the market share of manufactured sand (MS) keeps sharp increasing for the boom of infrastructure construction [1], [2].Transported long distance by water or wind, RS is rounded and has characteristic abrasion patterns on its Influence of manufactured sand’s characteristics on its concrete
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1 Introduction. Durability is the main and serious concern for the concrete because it is highly susceptible to aggressive environment caused due to acid or sulphate attack. This has led to the failure of several concrete structures worldwide. Sulphate adversely affects the concrete durability.1. Introduction. Ultra-High Performance Concrete (UHPC) is one of the most advanced cement-based construction material. It has outstanding mechanical and durability properties, such as compressive strength [2, 3], malleability [4, 5], impact resistance [6], chloride penetration resistance and freezing-thawing resistance [[7], [8], [9]], which has The physical and chemical impact of manufactured sand as a
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RCPT Test setup. RESULTS AND DISCUSSIONS Compressive strength Compressive strength results of concrete mixtures with and without manufactured sand at the age of 3, 7, 14 and 28 days are shown inThis paper proposes a prediction of the compressive strength of concrete with manufactured sand (MS-concrete) based on an ensemble classification and regression tree (En_CART) method. A data set containing 1,350 original measured strengths of 328 concrete mixtures from actual engineering projects were used for training and testing.Prediction of Compressive Strength of Concrete with Manufactured Sand
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Ultra-high performance concrete (UHPC) has attracted attention due to its excellent mechanical properties. Traditional concrete preparation consumes a large amount of natural sand, resulting in the shortage of natural sand and raising price, which increases the preparation cost of UHPC and is not conducive to maintaining stable mechanical With the depletion of river sand and the rising price of quartz sand, more and more researchers are trying to use manufactured sand to prepare ultra-high performance concrete (UHPC). However, due to the large amount of fine particles and high water demand, few studies are available to directly use the manufactured sand in its Feasibility study on preparing economical and
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2.1 Test Materials. PO42.5 Portland cement and grade I fly ash with loss on ignition (LOI) of 2.8% were used in the test. High-activity micro-silica fume powder with a SiO 2 content of 96.74% and high-performance carboxylic acid water reducer with a water reduction rate of 28% were used. Granite lithology sand with continuous gradation and Preparation of ultra high strength concrete with manufactured sand is an effective approach to reduce the natural resource depletion and environmental impact of cement concrete industry. It was different from the maximum bulk density theory of ultra-high performance concrete [27], [58], [59], which was a method to design concrete Mixing design and microstructure of ultra high strength concrete
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2.1 Production Process of Manufactured Sand. At present, most enterprises are backward in production, with low efficiency, poor quality, and high cost, which has a negative impact on the quality of construction engineering [ 1 ]. Small hammer crusher or impact crusher was usually adopted to produce MS in most small-scale sand Kaloop et al. [23] estimated the CS of high-performance concrete using gradient tree boosting machine where its inputs were selected by the MARS algorithm. Regarding the correlation of 0.965, their model could present an accurate estimation of the intended parameter.Predicting compressive strength of manufactured-sand concrete
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Manufactured sand has been used as a green and economical alternative to natural aggregates in concrete due to resource shortage [].Inevitably, some particles finer than 75 μm with the same mineral composition as parent rock are produced in the production of manufactured sand [], which are normally called stone powder or stone Ultra-high-performance concrete (UHPC) is a type of novel cement-based composites with ultra-high strength, superior workability and durability. During the past three decades, it has become a new type of construction material with greater application. The physical and chemical impact of manufactured sand as a partial replacement material inUltra-high performance concrete: Mix design, raw materials
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The early-age shrinkage, crack resistance and mechanical properties of high strength manufactured sand concrete containing a large amount of high absorbency stone powder were conducted in order to solve the early-age shrinkage and cracking problem of concrete by adding expansion agent, shrinkage reducing agent, polyvinyl Zhu [16] used iron tailings (particle size greater than 0.075 mm) to prepare sand concrete instead of fine aggregate, and the results showed that the addition of iron tailings can produce highEffects of iron ore tailings on the compressive strength and
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Section snippets Raw materials and mix proportion. An experimental flow is given in Fig. 1. Concrete waste was directly collected from construction waste for primary crushing procedure, in which a jaw crusher was employed and recycled coarse aggregate contains 30–40% hardened old mortar was obtained, which is also defined as recycled Influence of Distribution Modulus on the Compressive Strength of Ultra-High-Performance Concrete with Coarse Aggregate (UHPC-CA) R. Yang, R. Yu, Z. Shui et al., “The physical and chemical impact of manufactured sand as a partial replacement material in Ultra-High Performance Concrete (UHPC),” Cement and Concrete Influence of Distribution Modulus on the Compressive
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Strength And Durability Studies On High Performance Concrete With Manufactured Sand As Fine Aggregate January 2015 International Journal of Applied Engineering Research 10(2):1919-1924
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