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additive materials in concrete
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additive materials in concrete
Additive Manufacturing with Cement-based Materials NIST
2020年12月21日 Additive Manufacturing (AM) with concrete, also known as 3-D Concrete Printing (3DCP), is an emerging technology in the construction industry. This approach to concrete construction has the potential to change the way cementitious
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Full article: Additive manufacturing of concrete in
2016年8月2日 Additive manufacturing of concrete in construction: potentials and challenges of 3D concrete printing Freek Bos , Rob Wolfs
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Performance of crystalline forming additive materials in concrete
2020年1月10日 Crystalline forming materials have shown a considerable reduction in permeability of concrete structures under severe environment. This paper addresses the
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The realities of additively manufactured concrete structures in ...
2022年6月1日 Additive manufacturing of cementitious materials, particularly in the ‘material deposition by extrusion’ variant also known (and hitherto referred to) as 3D
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Nanoparticles as concrete additives: Review and perspectives
2018年6月30日 Nanoparticles 1 (NPs) as additives to concrete and related cement products have been the focus of recent research, as it is envisioned that their uniquely
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additive materials in cement concrete Topic
2023年11月14日 NEWS ON ADDITIVE MATERIALS IN CEMENT CONCRETE. January 17, 2024. ACI-RILEM Joint Webinar for Young Members To Highlight Cementitious
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On-demand additive manufacturing of functionally graded concrete
2020年2月7日 2.1. Functionally graded materials (FGMs) Functionally Graded Materials are characterised by a gradual transition of properties by location. FGMs result in superior
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Finite-Element Modeling of Reinforced Additively Constructed
2023年10月12日 The purpose of this study is to evaluate additively-constructed concrete structures and compare it with conventional construction methods. Static analyses are
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Performance of crystalline forming additive materials in concrete
2020年1月10日 This paper addresses the performance of crystalline forming additive materials in terms of morphology characterization and water Sorptivity.
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Concrete Strengthening by Introducing Polymer-Based Additives
2021年10月14日 Currently, concrete researchers tend to study the potential recycling of wastes originating from industrial post-production scrap, tires, plastic bottles and other materials. Raffoul et al. [ 29 ]. showed that tire waste is proportional to tire production, which exceeded 2.9 billion in 2017, with over 300 million tires reaching their shelf life every year
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Exploring the use of mixed waste materials (MWM) in concrete
2023年9月22日 Fig. 3 provides valuable insights into the number of studies conducted on each waste material and the manner in which they are utilized in concrete. The waste materials are categorized based on whether they were used as a replacement material for concrete components or as additive materials. Download : Download high-res image
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High Performance Concrete Additives - Constructionreview
2022年11月30日 These admixtures give a much higher performance than the normal plasticizers. They are also known as plasticizers or high-range water reducers (HRWR), reduce water content by 12 to 30 percent and can be added to concrete with a low-to-normal slump and water-cement ratio to make high-slump flowing concrete. Flowing
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Nanoparticles used as an ingredient in different types of concrete
2021年4月6日 Concrete is one of the most used construction materials worldwide. The production process of cement which is one of the main components of concrete involves a high amount of CO 2 emissions which are about two billion tons/year (nearly 7% of the planet's total CO 2 emissions) [].It is expected that production of cement to reach about
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Experimental Comparative Study of Effect of Different Additive ...
2020年8月11日 concrete strength (7, 28 and 90 days) with the impact of metakaolin and fly ash in concrete with (w/b ratios 0.4, 0.5 and 0.6). they found that the effect of each additives materials where ...
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THE USE OF OIL PALM FIBER AS AN ADDITIVE IN CONCRETE
Additive is substances added to fresh concrete to typically improve its properties. The research was conducted to establish the effect of oil palm fiber addition on workability, density and compressive strength of concrete. The mixes were prepared with fiber cement ratio of 0%, 0.25%, 0.50% and 1.0% respectively. A total of 16 concrete cubes.
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Concrete Definition, Composition, Uses, Types, Facts
2024年1月31日 concrete, in construction, structural material consisting of a hard, chemically inert particulate substance, known as aggregate (usually sand and gravel), that is bonded together by cement and water. Among the ancient Assyrians and Babylonians, the bonding substance most often used was clay. The Egyptians developed a substance
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Concrete - Wikipedia
Etymology. The word concrete comes from the Latin word "concretus" (meaning compact or condensed), the perfect passive participle of "concrescere", from "con-" (together) and "crescere" (to grow).History Ancient times. Concrete floors were found in the royal palace of Tiryns, Greece, which dates roughly to 1400-1200 BC. Lime mortars were used in
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Additives in concrete to enhance neutron attenuation
2023年9月1日 Six different concrete mixes, control concrete (CC), polymer incorporated mix (P), polymer incorporated mix with steel slag as fine aggregates (PS), PS with full replacement of coarse aggregate by iron ore pellets and steel slag as fine aggregate (PSI), PSI with additive borax admixture (PSIB) were cast and tested to study the radiation
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Effect of natural additives on concrete mechanical properties
2021年1月11日 The accelerator did not influence the natural additive’s behavior, and it is also useful to streamline the unmolding process. ... Influence of cactus mucilage and marine brown algae extract on the compressive strength and durability of concrete. Materiales de Construcción,66(321), 074.
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(PDF) Reuse of waste plastic as an additive in asphalt concrete:
2022年6月3日 Abstract. This review is centered on the use of waste plastics as an additive for road construction. This review discusses extensively the state-of-the-art methods that can be employed in ...
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Additive Manufacturing and the Construction Industry
2023年7月30日 Additive manufacturing (AM) is the process of fabricating three-dimensional (3D) physical objects by connecting materials together in a layer-based manner following a specific computer design (Guo Leu, 2013).The concept of AM was first introduced by Chuck Hull (), who used ultraviolet (UV) light to harden a layer of a liquid
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Materials Free Full-Text The Effect of Crystalline
2021年4月9日 This paper investigates the effectiveness of a specific crystalline waterproofing admixture (CWA) in concrete as a function of a water–binder ratio. Four concrete mixes with and without CWA were
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Self-Healing Concrete and Cementitious Materials IntechOpen
2020年5月28日 Concrete is one of the most used materials in the world with robust applications and increasing demand. Despite considerable advancement in concrete and cementitious materials over last centuries, infrastructure built in the present world with these materials, such as dams, roads, bridges, tunnels and buildings requires intensive
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Materials Free Full-Text The Effects of Diatomite as an Additive
2023年2月23日 Diatomite is a siliceous sedimentary rock containing amorphous silica, which can be used as a green mineral admixture to improve the properties of concrete. This study investigates the affecting mechanism of diatomite on concrete performance by macro and micro tests. The results indicate that diatomite can reduce the fluidity of concrete
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Processing of Cementitious Materials for 3D Concrete Printing
2022年7月24日 Additive manufacturing or 3D printing of concrete provides a complete digital solution to conventional construction practice and fosters sustainable, smart, and green building concepts. In this paper, some recent experimental research conducted at the Indian Institute of Technology Guwahati (IITG) on 3D concrete printing is presented.
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Concrete 3D Printing: Process Parameters for Process Control ...
2023年3月19日 The highly modular requirements for PPVC places concrete additive manufacturing in an advantageous position due to its high customizability and low volume manufacturing capabilities for a ... Soroushian, P. Assessment of microcrack development in concrete materials of different strengths. Mater. Struct. 2004, 37, 724–731. [Google ...
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Feasibility of Pulverized Oyster Shell as a Cementing Material
2012年11月9日 As a result, the use of pulverized oyster shells as concrete additive or cement replacement often needs to be combined with other bonding materials, such as fly ash or slag . Only the Pozzolanic reaction between SiO 2 in the fly ash or slag and CaO in the pulverized oyster shells, along with the addition of water reducer or superplasticizer,
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Understanding Polymers in Concrete Concrete Construction
2001年9月15日 There are many reasons to add polymers to concrete overlay mixes. Polymers improve adhesion to the old surface, flexural strength, tensile strength, and freeze/thaw durability. They also reduce permeability, the intrusion of chlorides, salts, and carbon dioxide. They increase abrasion resistance and can be applied in very thin cross
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Cements and Cement Additives - Structural Guide
2019年11月4日 Raw material extraction from the quarry. Grinding, proportioning and blending. Pre-heated phase. Kiln phase. Cooling and Final grinding. Packing and shipping. Raw materials that included calcium, silicon, iron and aluminum are used in cement manufacturing. Mainly, limestone, clay and sand are used to fulfill the requirements of
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