Semantic Scholar extracted view of "Development of a novel eco-efficient LC2 conceptual cement based ultra-high performance concrete (UHPC) incorporating limestone powder and calcined clay tailings: Design and performances" by Yu Sun et al.
The utilization of calcined coal gangue (CCG) and limestone for the preparation of blended cement is an efficient approach to address the issue of coal gangue disposal. However, the compressive strength development of blended cement is slow, particularly at high substitution levels of CCG. Therefore, this study aimed to promote …
This mineral has enormous diversity of industrial applications and what follows are some key uses of Limestone: Steel industry. Construction Materials. Refractory. Sugar Refining. Agriculture. Paper manufacturing. …
LC3, a relatively new variant, combines limestone and abundant low-grade clays found globally, including Oman. Unlike conventional clinker production with high …
notable developments in recent years is the use of calcined clays in a cement system combined with limestone [17–20], referred to as limestone calcined clay cement …
DOI: 10.1016/j.conbuildmat.2021.125416 Corpus ID: 245751936; Microstructure and mechanical properties of sustainable cementitious materials with ultra-high substitution level of calcined clay and limestone powder
The concept of combining calcined clays and limestone to replace more clinker was first proposed by Antoni et al. [14], although calcined clays and limestone have long been used as pozzolanic materials and cement fillers [31, 32]. The key innovation of LC3 is the use of commonly available kaolinite clay, particularly the low-grade ones …
Limestone-calcined clay cement (LC3) is one of the green or low-carbon binder options for replacing Portland cement, leading to sustainable construction. ... marble [21], mine tailings [22], incinerated bottom ash [23], and construction demolition waste (CDW) ... In addition to the bulk density, thermal conductivity is the main themo-physical ...
Soil contaminated with heavy metals is a serious threat to the sustainable development and global food security [1,2,3,4].In contrast to water and air pollution, heavy metal pollution in soils is an invisible and unseen problem [1,5,6,7,8,9].Many of the world's contaminated sites have become the dump sites of various industrial by-products that …
The results showed that qualified cement clinker all could be generated using six kinds of metallic tailings as clay mixed with middle and high-calcium limestone, and the calcination temperature ...
The major drawbacks of UHPC limiting its application in engineering construction include the high production cost and the high carbon dioxide emission. ... [32] designed UHPC with calcined clay tailings and limestone powder and found that calcined clay tailings optimized the pore structure of UHPC and improved its impermeability. …
1. Introduction. To reduce CO 2 emissions and the consumption of natural raw materials in cement production, supplementary cementitious materials (SCMs) have been developed over the past decade [[1], [2], [3], [4]].Limestone calcined clay cement (LC 3) is a promising low-carbon alternative for Ordinary Portland cement (OPC), which can replace …
DOI: 10.1016/J.CONBUILDMAT.2021.124296 Corpus ID: 238703515; Hydration kinetics of cement-calcined activated bauxite tailings composite binder @article{Zhou2021HydrationKO, title={Hydration kinetics of cement-calcined activated bauxite tailings composite binder}, author={Longfei Zhou and Mifeng Gou and Xuemao …
The use of calcined clays as supplementary cementitious materials provides the opportunity to significantly reduce the cement industry's carbon burden; however, use at a global scale...
This paper details the main factors influencing the performance of limestone calcined clay cements (LC3). The kaolinite content plays a major role in the rheological properties as well as strength development. Even in the presence of secondary phases, kaolinite can be accurately quantified by thermogravimetric analysis. The …
This paper details the main factors influencing the performance of limestone calcined clay cements (LC 3). The kaolinite content plays a major role in the …
Semantic Scholar extracted view of "On the use of limestone calcined clay cement (LC3) in high-strength strain-hardening cement-based composites (HS-SHCC)" by Lei Wang et al. ... Vulnerability to atmospheric carbonation is one of the major durability concerns for limestone calcined clay cement (LC3) concrete due to its relatively low …
DOI: 10.1016/j.conbuildmat.2022.128932 Corpus ID: 251941896; Sustainability enhancement of calcined clay and limestone powder hybrid ultra-high-performance concrete using belite-rich Portland cement
Limestone calcined clay cement (LC 3) is a novel kind of ternary blended cement, for which calcined clay and limestone (LS) are the main constituents replacing clinker ... In addition, producing 1 ton of rare earth is expected to produce 2000 tons of rare earth tailings (Wang et al., 2016). Its abundant supply and wide distribution means that ...
The use of calcined clays as binder components can be combined with the simultaneous use of other types of pozzolan. Mechti et al. presented results of a study in which finely ground sand was used as an additional component which, in spite of its crystalline structure, showed the pozzolan activity. The aim of the study was to …
DOI: 10.1016/j.conbuildmat.2023.132026 Corpus ID: 259495078; Using limestone calcined clay cement and recycled fine aggregate to make ultra-high-performance concrete: Properties and environmental impact
Semantic Scholar extracted view of "High-efficiency utilization of limestone tailings: Used as cementitious materials and fine aggregate to prepare karst structure filling material" by Yansheng Wang et al.
1. Introduction. As the world's most used construction material, Portland cement (PC) has been widely recognized as an energy and carbon intensive material, contributing more than 5% of global anthropogenic CO 2 emissions [1].About 0.9 tonne of CO 2 is emitted for producing 1 tonne PC, mainly due to the high clinkering temperature …
In this study, four UHPSSC mixes with various compositions were examined. The raw materials included cement, fine limestone (LS), calcined clay, sea-sand, seawater and superplasticizer (SP). Commercially available metakaolin (MK) was used as calcined clay in the experiment. Some of the raw materials are shown in Fig. 1.
Cement production based on a blend of limestone and calcined clay is gaining traction as the global industry seeks to mitigate CO2 emissions. SHARE Listen. MUSCAT: A Spanish-based engineering firm has revealed that it has been contracted by an Omani client to supply a cement plant based on its innovative low-carbon cement …
It intends to use agricultural by-products such as pistachio shells, as alternatives fuels to lower the fuel-based emissions, calcined clay to lower the clinker factor and CCS to capture the remaining 950,000t/yr of CO 2 emissions. The other projects either involve using calcined clay or substituting limestone with calcium silicate.
One of the most notable developments in recent years is the use of calcined clays in a cement system combined with limestone [17, 18, 19, 20], referred to as limestone …
The use of finely ground limestone and calcined clay in combination as replacement for Portland cement clinker leads to the densification of microstructure resulting from the physical packing as ...
Studies at EPFL [10], [11] have shown that a kaolinite content of only about 40% in a mixture of LC 3-50 (50% ground clinker, 30% calcined clay, 15% limestone, 5% gypsum) is sufficient to give mechanical properties comparable to the reference plain Portland cement from about 7 days (EN 196-1 mortar bars w/c = 0.5, sand/cement = 3 …
Limestone calcined clay cement (LC 3) is being developed as a low-carbon alternative to conventional cements. The cement has the potential to reduce CO 2 …
The second major use of limestone is in steelmaking. It is being used for maintaining slag basicity (CaO/SiO2) of around 3. In steelmaking, limestone is used in calcined form. For use in steelmaking, the SiO2 (because of its acidic nature) content in the limestone is to be very low preferably less than 1 %. Also, the reactivity of the lime is ...
Kaolinite clay is one of the effective supplementary cementitious materials (SCMs) adequately available all over the Middle East [49].Kaolinite clay can be activated/ calcined by relatively moderate thermal treatment [50] to obtain amorphous/ highly reactive MK. The kaolinite clay used in this study was supplied from Middle East Mining …
In this study, pulverized oyster shells were used in combination with calcined clay to produce oyster shell calcined clay cement (OC3). The performance of OC3 was compared to that of limestone calcined clay cement (LC3) with varying amorphous contents of the calcined clay. The results of these experiments are …