The composite cementitious materials were prepared with lead-zinc tailings, lead-zinc smelting slag, and cement clinker. The effect of material ratio on the mechanical properties, the phase analysis, and microstructures were investigated. The effect of the pH and stripping time on the leaching amount of lead ion was discussed. The results show that the additive amount of the tailings should be
slag is composed mainly of amorphous material and its chemical and mineral composition is similar to GBFS, so that it is expected to be a possible material resource to prepare alkali-activated cement. But before use it is of course necessary to carry out comprehensive studies on alkali-activated phosphorous slag cement
Jun 16, 2021 Zhu K Z, Qin Y M, Hou S, et al. Experimental Study of Cement Grinding Aids Using in Slag Grinding[J]. Cement Engineering, 2017 (3): 4–6, 22 [9] Liu H, Zhou Z H, Wang X H, et al. Preparation and Photocatalytic Activities of Photocatalysts From High-iron Slag[J]. Industrial Safety and Environmental Protection, 2012, 38(1): 84–87
The phosphorous slag, fly ash, cement and water are firstly mixed uniformly according to the ratio, the alkalies activator is added to stir for 5min-10min, then the gas former is added to stir for 1min-5min, the mixture is put in a die to mold and cut, the mould is removed after the product reaches the form removal strength, the finished
The invention discloses a nickel slag brick and a preparation method thereof. The nickel slag brick is a novel nickel slag brick which is prepared by taking water quenching nickel slag a main material and industrial waste residue, lime, a little quantity of cement and a proper quantity of water as assistant materials in the procedures of uniformly stirring, then moulding by adopting a
Cement is manufactured through a closely controlled chemical combination of calcium, silicon, aluminum, iron and other ingredients. Common materials used to manufacture cement include limestone, shells, and chalk or marl combined with shale, clay, slate, blast furnace slag, silica sand, and iron ore. These ingredients, when heated at high
Open stockpiling and the continual production of industrial solid wastes such as red mud (RM) and yellow phosphorus slag (YPS) have caused serious environmental pollution issues. Additionally, concrete prepared easily and with high strength is a widely applied building material. Therefore, replacing part or all of the cement for preparing concrete with RM and YPS will greatly reduce this
Oct 28, 2021 Recycled concrete powder (RCP) recycling can reduce the consumption of natural resources, which has been highlighted as an ecofriendly and sustainable approach. The alkali-activated slag (AAS) offers notable prospects for replacing conventional Portland cement binders. In this study, we partially replaced granulated blast furnace slag (GBFS) with RCP to prepare the AAS mortars. We
2.2 Sample preparation and testing methods. In this study, two binder c ontents were used, 10% (B10) and 20% (B20). The binder content was defined . ... Alkali activated slag concrete (AASC) is
Figure-1: Preparation of alkali-activated slag concrete hollow block (AASCHB) specimens Image Credits: Research Gate. Hydration of Alkali-Activated Concrete. The hydration reaction in alkali-activated concrete is more complex than ordinary portland cement. Its mechanism is not fully understood and is still under research
2 days ago For SS activated slag, reactive MgO can promote the early hydration greater than the late hydration. Download : Download high-res image (860KB) Download : Download full-size image; Fig. 9. TG/DTG curves of AAS cement (a) SC activated slag at 3 days; (b) SC activated slag at 28 days; (c) SS activated slag at 3 days; (d) SS activated slag at 28 days
May 03, 2020 Preparation and mechanical properties of steel fiber reinforced high performance concrete with copper slag as fine aggregate To cite this article: X M Li et al 2019 IOP Conf. Ser.: Mater. Sci. Eng. 531 012037
Study on the Preparation of High Performance Concrete using Steel Slag and Iron Ore Tailings ... Similar to cement, Steel slag can react with water, producing Ca(OH)2, C-S-A-H gel, C-A-H crystal, C-S-H gel, and so on [13-15]. Thus, SS is considered as a supplemental cementitious material [16-19]. At present, SS is mainly used as subgrade
Product Definition Slag cement, UN CPC 3744 and UNSPSC Code 30111601, is defined as granulated blast-furnace slag that has been ground to cement fineness, with or without additions, and is a hydraulic cement [2]. Product Category Rules (PCR) NSF International, Product Category Rules for
May 10, 2021 SS is pre-treated by wet carbonation, and then mixed with cement to prepare the paste sample (the amount of steel slag in the paste sample varies from 0 to 60% at intervals of 10%); mixed with cement and standard sand to prepare mortal sample (the steel slag content in the mortar sample is 10%). The flow chart is shown in Fig. 3. The samples
