The functional and mechanical properties of steel slag (SS)–red mud (RM)–electrolytic manganese residue (EMR)-based composite mortar under different matching ratio conditions were investigated in this paper to examine the synergistic cementing effect among multiple solid wastes. The hydration characteristics of the …
1. Introduction. Cement is a crucial primary material in the construction industry, but its production process contributes to high carbon emissions [1].For each ton of cement clinker produced, around 0.8 tons of CO 2 are generated [2].According to statistics, the cement industry in China accounts for about 11% of the total carbon emissions, …
However, as shown in Fig. 1, due to the huge capacity gap between the steel industry and the cement industry, the supply of GBFS is far from meeting the demand of the cement industry and some countries even rely on imported GBFS to meet their demands.In addition, the price of S95 GBFS used in the cement and concrete industry …
Clinker, blast furnace slag (BFS) and electrolytic manganese residue (EMR) were used to make the cement-based cementitious material (CCM) in this research.
Manganese slag (MS) containing a certain amount of active hydration substances may be used as a kind of cementitious material. In the present study, we measured the mass, the relative dynamic modulus of elasticity (RDME), and the flexural and compressive strengths of MS high-performance concrete (MS-HPC) with added basalt …
Ground granulated blast-furnace slag (GGBS) is a green construction material used to produce durable concrete. The secondary pozzolanic reactions can result in reduced pore connectivity; therefore, replacing partial amount of Portland cement (PC) with GGBS can significantly reduce the risk of sulfate attack, alkali–silica reactions and …
Semantic Scholar extracted view of "Precise mix-design of Ultra-High Performance Concrete (UHPC) based on physicochemical packing method: From the perspective of cement hydration" by T. Yin et al. ... Promoting the application of water-quenched manganese slag in high-strength mortar through high pressure-temperature …
Cement mortar was prepared at a ratio of 1:3 as per the Indian standard IS:2250-1981. 1:3 grade of cement mortar considered in the proportion of cement: M-sand: Slag sand (C:M:S). An experimental investigation of slag sand was done by preparing a mortar with varying aggregate percentages from 0 to with an interval of 25%.
The performance of prepared samples were compared to Portland cement based concrete that subjected t o similar conditions. The performance results shows the sulfate attack which led to the
Keywords: manganese slag; ultra-high-performance concrete; plastic viscosity; energy spectrum analysis; X-ray diffraction 1. Introduction Manganese slag …
DOI: 10.1016/j.conbuildmat.2022.126515 Corpus ID: 246267243; Preparation of composite micro-slag based on the application of tailings slag in cement and concrete @article{Peng2022PreparationOC, title={Preparation of composite micro-slag based on the application of tailings slag in cement and concrete}, author={Yajuan Peng and Zhong …
DOI: 10.1016/j.jobe.2024.109939 Corpus ID: 270498748; A low-carbon cement based on silicomanganese slag and granulated blast furnace slag: hydration process, microstructure, mechanical properties and leaching risks
The SS, DG, and GBFS test materials originated from the Ningxia region of China. The composition and crystal phases of raw materials were determined by the X-ray fluorescence spectrometer (XRF) test and X-ray diffraction (XRD), as summarized in Table 1 and Fig. 2.C 2 S, C 3 S, C 3 A, and RO were the main components of SS. RO phase …
The influence of different replacement ratios of steel-slag powder as cement-replacement material on the fracture performance of concrete is studied in this paper. A three-point bending fracture test is carried out on slag powder-cement-based concrete (SPC)-notched beams with steel-slag powder as cementitious materials, …
Manganese slag (MS) containing a certain amount of active hydration substances may be used as a kind of cementitious material. In the present study, we …
1. Introduction. Geopolymer concrete has been highly recommended as a suitable alternative to ordinary Portland cement (OPC)-based concrete over the past few years [1].Indeed, it is known for its good compressive and splitting tensile strengths which can reach over 60 and 3 MPa respectively [2].Furthermore, in comparison to OPC …
Steel slags have a chemical composition close to that of the Portland cement clinker, mainly constituted by calcium-silicates and calcium-ferrites, which makes this industrial waste potentially usable as a raw material for cement and concrete production [91].The presence of steel slag in the clinker manufacturing process reduces the …
1. Introduction. Steel slag is a by-product of steel manufacturing [].Approximately 160 kg of steel slag is generated per ton of steel produced [].The common chemical compounds in steel slag are SiO 2, CaO, Fe 2 O 3, Al 2 O 3, and MnO [3, 4].The major mineral components of steel slag are C 3 S, C 2 S, C 4 AF, RO phase, and free …
Although the calcium aluminium silicate binding gel formed from Geopolymer reactions shows more efficiency performance than the cement hydration gel, cement RPC exhibits high compressive strength than Geopolymer RPC. ... Mix design development of fly ash and ground granulated blast furnace slag based geopolymer concrete. J Build Eng …
manganese slag has a good activity th at coul d affect the performance of concrete [7]. Due to the rapid development of the steel industry, a large amo unt of metallurgical slag needs to be recycled.
Manganese slag (MS) containing a certain amount of active hydration substances may be used as a kind of cementitious material. In the present study, we measured the mass, the relative dynamic modulus of elasticity (RDME), and the flexural and compressive strengths of MS high-performance concrete (MS-HPC) with added basalt …
It is of great importance to innocuity, minimization and reutilization of manganese slag generated in manganese product by electric furnace process. In the paper, ordinary Portland cement was replaced partly by manganese slag to then evaluate manganese slag' effect on mechanical performances of them. The experimental results obtained …
Electrolytic manganese residue (EMR) is added into ground granulated blastfurnace slag (GGBS) as an activator to prepare EMR–GGBS cement. The effects of chemical activation, mechanical activation, water-to-cement ratio and the curing process on the strength and setting properties of EMR–GGBS cement are investigated based on its …
The formation of hydroxy-manganese was due to the solidification of divalent manganese ions, mainly caused by the ionization of the added magnesium oxide in the interstitial water of the electrolytic manganese slag to produce hydroxide ions. Download: Download high-res image (826KB) Download: Download full-size image; Fig. 4.
1. Introduction. Sustainability is based on economic development, social equity and environmental protection. Different nations under various international agreements have committed themselves to the goal of preserving natural resources, and the construction of a sustainable built environment [1].Nowadays, energy efficiency and …
In the paper, ordinary Portland cement was replaced partly by manganese slag to then evaluate manganese slag' effect on mechanical performances of them. …
It is of great importance to innocuity, minimization and reutilization of manganese slag generated in manganese product by electric furnace process. In the paper, ordinary Portland cement was replaced partly by manganese slag to then evaluate manganese slag' effect on mechanical performances of them. The experimental results …
Manganese slags have been assessed as potential supplementary cementitious materials for partial replacement of Portland cement, although its effectiveness is affected by the content of MnO in the slag. 90,92 Péra et al. 93 characterized five manganese-rich slags from the ferroalloys industry, identifying that increased contents of MnO inhibited early …
Designers may lessen the impact of concrete on the environment while yet ensuring enhanced performance and higher durability by using slag cement, which has proven long-term performance advantages. However, in actual practice, concrete constructions use slag to replace OPC up to 30 to 50 percent of the time, depending on …
Based on concrete 3SR-60 with better mechanical strength, the compressive strength laws of concrete 30-0, 3SR-0, 2SR-60, 3SR-60 and 4SR-60 at different ages were normalized to reveal the influence of dosage of silicon-manganese slag and cement on the strength of concrete. The results are shown in Figure 9. It can be …
The use of ladle slag as a replacement for natural aggregates as coarse aggregate in concrete has gained attention in recent years due to its potential benefits in terms of sustainability and waste reduction. The paper aims to investigate the influence of ladle slag as a coarse aggregate replacement on various properties of concrete, …