Sustainable use of ultrafine recycled glass in additive manufactured (3D printed) reactive powder concrete ... the raw materials are measured based on the specified ratios. ... emission of GP05, GP10, GP15, GP20 and GP25 is 4.65%, 9.31%, 13.97%, 18.62%, and 23.28% lower than the control mix. Cement production accounts …

Hardening process and strength gaining rate of concrete under room temperature curing conditions are slow with respect to the production rate of concrete plants in response to demand. In order to reach a desired strength level for concrete in a short time, heat treatment is widely used. When fly ash is included in concrete and the …

The aim of this experimental study was to investigate the penetrability of ultrafine Portland cement suspensions with or without additives into sand specimens and the strength and permeability of grouted sand samples. It was shown that ultrafine Portland cement grouts with dispersive agent could be used to treat not only medium to fine sand …

There is limited literature to investigate the shrinkage properties of cement paste with ultrafine reactive powder. It has been known that cement-based materials with low w ... UPS content and SAP content. As for the PS fineness, raw PS with d50 of 38.3 μm and ultrafine PS with d50 of 2.2 μm was considered. As expected, the reactive UPS …

The grouting technique is an important method in underground engineering that prevents water seepage and reinforces fractured rock mass. In this research, ultrafine cement-based grouting material, including ultrafine cement (UC), ultrafine fly ash (UFA), polycarboxylate superplasticizer (SP), colloidal nanosilica (CNS), sodium sulfate solution …

Engineering, Materials Science. Buildings. 2023. Ultra-high-performance concrete (UHPC) is a form of cementitious composite that has been the most innovative product in concrete technology over the last three decades. Ultra-high-performance….

The specific gravity of UFFA and UFS was observed as 2.36 and 2.86 respectively. The specific gravity of OPC was found as 3.15. The Blain's fineness of UFFA and UFS was observed as 650 m 2 /kg and 900 m 2 /kg respectively whereas the fineness of OPC was observed as 320 m 2 /kg.. The mean particle size (d 50) of UFFA and UFS …

Grouting and Ground Treatment, edited by Lawrence F. Johnsen, Donald A. Bruce, and Michael J. Byle (ASCE Proceedings, 2003). Reviews state-of-the-art methods and …

Ultrafine cement, ultrafine fly ash, ultrafine slag, and additives (superplasticizer, AUA, gypsum, and retarder) are used to develop highly efficient composite ultrafine cement (CUC). ... showing that the type and content of hydration products are influenced by the mixing ratio of raw materials. 2. All samples contain C–S–H, CH, AFt, ...

The cement soil samples were prepared by adding cement and ultrafine cement (UFC) by stirring method; the samples were then soaked in fulvic acid solution to simulate the cement soil in the peat soil environment. ... The amount of raw materials was calculated according to Formulas (1) to (4). Cement soil samples were prepared using a …

The alkali-activated WUFA-PS-based geopolymer was prepared by using phosphorus slag and wet-grinding ultrafine fly ash as the main raw materials, and sodium silicate as the activator. ... H. Effect of steam curing on compressive strength and microstructure of high volume ultrafine fly ash cement mortar. Constr. Build. Mater. …

Abstract. This study examined the permeability of concrete in which a portion of the cement was replaced with reactive ultra-fine fly ash (RUFA) or silica fume. RUFA is an industrial by-product from thermal power plants, with spherical particles ranging in size from 0.1 μm to 10 μm, which is smaller than the particles in conventional fly ash.

In this paper, S95 grade ultrafine mineral admixture (UMA) was prepared by water quenched manganese slag and fly ash 1:1 compound mechanical ball milling to a specific surface area of 714 m 2 /kg. Its activity index was 86.8% at 7d and 96.3% at 28d. ... 2 RAW MATERIALS. Cement (CT): Conch P·O42.5 grade cement, produced in Xingan, …

Raw mill is mainly used in grinding raw materials and end products in cement plant. Vertical Raw Mill For Sale. Feed particle size: 0-70mm; Production capacity: 3-340 tons / hour; Ultrafine Raw Mill For Sale. Feed particle size: 0-20mm; Production capacity: 0.5-25 tons / hour; Trapezium Raw Mill For Sale. Input Size: 0-55mm ;

The study aimed to assess the effect of two ultrafine calcined clays combining different metakaolin:limestone ratios with two different clinker substitutions levels and …

The main raw materials used for this test were Portland cement clinker, UITP, slag powder, and gypsum. The UITP was made by grinding iron tailings taken from Beijing Weike Metallurgy Co., Ltd; the clinker was taken from a line-A rotary kiln of Fujian Shunchang Lianshi Cement Co., Ltd.; gypsum powder, with a fineness of 200 meshes, …

The waterproof and thermal insulation property of ed concrete is very important. In this study, the ultrafine fly ash (UFA)-based superhydrophobic composite coating was applied onto concrete. The UFA-based base coating that closely adhered to the concrete initially improved the waterproofness of the test block, and the silane …

Ultra-fine CS was fabricated by wet-grinding method for the first time. • The 7 and 28 d SAI of ultra-fine CS can reach 106% and 102%, respectively. • Ultra-fine CS …

Particle-size distribution of raw materials; a) CEM I 52.5 R-SR 5 (R); b) ultrafine cement (U); c) SFN silica fume; d) SFF silica fume. Resistivity of mortar prisms at seven and 28 days. Mortar ...

Steel slag was first broken below 5 mm with a jaw crusher (PEF 100 × 60). Then, it was ultrafine smashed with a supersonic steam-jet crusher (S-FW 200), as shown in Fig. 1.This was a continuous process: the steel slag was first transferred to the silo with a hooper; it was then loaded into the smashing chamber; finally, it was entrained with the …

The present literature review explores the energy-efficient ultrafine grinding of particles using stirred mills. The review provides an overview of the different techniques for size reduction and the impact of energy requirements on the choice of stirred mills. It also discusses the factors, including the design, operating parameters, and feed material …

The wet-grinding specimens presented a higher hydration heat than that of raw steel slag specimens, and the microstructure of 3 μm-40% (3 μm steel slag mixed with cement as a dosage of 40%) is ...

As to the stacking state of raw materials, its particle morphology and size distribution played vital roles [34]. ... Efflorescence of microwave-heated alkali-activated cement synthesized with ultrafine coal combustion ashes. Fuel, 303 (2021), Article 121225, 10.1016/j.fuel.2021.121225. View PDF View article View in Scopus Google Scholar

Steel Slag Ultrafine Powder Used in Cement-Based Materials. Sustainability 2022, 14, ... Raw Materials P·O 42.5 Portland cement used in this study was produced by Anhui Conch Cement

Grouting and Ground Treatment, edited by Lawrence F. Johnsen, Donald A. Bruce, and Michael J. Byle (ASCE Proceedings, 2003). Reviews state-of-the-art methods and technologies for grouting and grout treatments from Japan, the Nordic countries, and the United States. (978-0-7844-06663-2) Ultrafine Cement in Pressure Grouting.

Download Citation | On Apr 1, 2023, Juanhong Liu and others published Mechanism of regulating the mechanical properties and paste structure of supersulfated cement through ultrafine iron tailings ...

The present work shows the results of preparing and using Ultra-Fine Cement (UFC) as a binder material addition with no extra admixtures of different …

Ultrafine marble particles (UMP) and ultrafine brick particles (UBP) obtained from marble and brick plants can be reused in cement industry, instead of being stored …

This paper reviews research on utilization of two main ultra-fine material, that is, ultra-fine fly ash and slag. The paper discusses the feasibility of ultra-fine …

It was shown that ultrafine Portland cement grouts with dispersive agent could be used to treat not only medium to fine sand but also fine sand where chemical grouts can only penetrate The ...