STOWARZYSZENIE PRODUCENTOW CEMENTU
The article presents a review of research findings on the properties of concrete intended for radiological shielding in nuclear power plants. New results obtained in recent years within the framework of the international RADCON project are discussed in the context of other publications. The effects of gamma irradiation on hardening mortar and concrete are presented, revealing t…
Seawater sea-sand cement matrix [SSCM] is an abundant, cost-effective material with favorable mechanical properties, making it a promising eco-friendly building material. In this study, modified SSCM is prepared by incorporating superabsorbent polymers [SAP]. The durability characteristics, including drying shrinkage, impermeability, and freeze-thaw resistance, are systematical…
The first cementing interface refers to the interface between the cement sheath and the casing after the cement injection is completed. The bonding strength of the first cementing interface is mainly generated by the interaction between the outer surface of the casing and the cement sheath. This article explores the influence of cement strength on the first interface of cementi…
In the process of geological carbon sequestration, the CO2 injected into the formation will react with the hollow cement ring or wellbore cement plug, and reduce the sealing performance of the cement body to further destroy the integrity of the wellbore, causing CO2 leakage and seriously affecting the efficiency of CO2 storage. This study aimed to investigate the effect of CO2 …
In this study, the most suitable locations for cement factory are identified by using the Geographical Information System and Multi-Criteria Decision Analysis [MCDM] in the Konya Plain Project [KPP] [Aksaray, Karaman, Kırıkkale, Kırşehir, Konya, Nevşehir, Niğde, Yozgat] provinces. The physical conditions of the region were determined based on the Environmental Impact Assessment…
The cementing quality at the wellbore interface is critical to wellbore integrity and long-term safety. In this study, Al2O3 modulates hydration products to enhance interfacial bond strength between cement slurry and casing. The influence of Al2O3 on primary cement interface bonding strength was investigated using characterization techniques including X-ray diffraction, thermog…
This paper discusses the possibility of replacing fine aggregates in high performance concrete [HPC] with waste material from CETRIS boards production [WCM]. CETRIS boards are made from a combination of fine wood chips and cement mortar, and a large amount of waste material is generated during their production - cutting and grinding of the boards. In this research, fine waste m…
Ensuring the long-term integrity - particularly zonal isolation and durability - of CO2 injection wells constitutes a major scientific and technological challenge, as it is essential for preventing undesirable gas migration from the wellbore into overlying formations or to the surface. The integrity of wells designed for CO2 injection depends, among other factors, on well depth…
The efficacy of cementitious grouts in micro-crack remediation is contingent on a delicate balance of rheological, mechanical, and volumetric properties. This study critically investigates the multifunctional role of nano-CaCO3 [n-CC] in a high-volume fly ash [HVFA] [29 % by binder weight] cementitious system. By systematically varying n-CC dosage from 0% to 4.88 %, we quantify…
Graphene Oxide (GO) has emerged as a promising nano-additive for enhancing the properties of cement-based materials. In this paper, five plastering mortar formulations with varying GO dosages (0‰, 2‰, 4‰, 6‰, and 8‰ by potland cement) were prepared to investigate the effects of GO on mechanical performance, durability, and microstructural evolution. The results indicate that, a…
As an indispensable component of ceramsite concrete [CC], the particle size of coarse aggregate affects the performance of concrete to a certain extent. To further investigate the effect of particle size of ceramsite on mechanical properties and freeze-thaw resistance of CC simultaneously, seven series of CC containing ceramsite with various particle sizes were designed based o…
Accurately predicting the compressive strength of concrete is crucial for quality control and structural safety assessment in civil engineering. However, traditional machine learning methods often struggle to capture the complex nonlinear interactions and strong feature correlations inherent in concrete mix design, thereby limiting their predictive accuracy and generalization a…
An analysis of current trends in concrete technology has been conducted. The feasibility of integrating digital methods into the “composition-structure-process-properties-functions” system has been established on the basis of fundamental concrete science principles. The discussion focusses on the role of functional-kinetic monitoring of heat evolution data, which serves as a ca…
This study examines the impact of replacing dune sand [DS] with fine recycled concrete aggregate [FRCA] on the properties of self-compacting mortar [SCM] at incorporation rates of 0 %, 25 %, 50 %, 75 %, and 100 %. The methodological approach is based on the mini-cone test [slump-flow] and the measurement of flow time using the V-funnel, complemented by yield stress [τ0] estimat…
Salt-freezing coupling is one of the main factors affecting the durability of recycled concrete. Investigating the chloride ion transport performance in recycled concrete containing recycled aggregate is essential to clarify the resistance of recycled concrete to chloride ion erosion due to the use of recycled aggregate produced from waste concrete. The objective of this paper …
The paper presents the results of water and cyclical freeze – thaw resistance tests of cementitious mortars based on 3 different binders: Portland cement, calcium sulfoaluminate cement and belite-ye’elimite-ferrite cement, modified with organic additives: methylcellulose and redispersible polymer powder based on vinyl acetate-ethylene copolymer. The tests of mechanical strength…
The utilization of supplementary cementitious material [SCMs] as a partial substitution of cement is one of the most effective way to lower carbon-dioxide emissions in the cement production. Although previous research on the use of sugarcane bagasse ash [SBA] and limestone as SCMs as a partial substitution of cement has been reported. However, there is little research on their …
The size control of 3D printed concrete filament limits application of 3D printed concrete technology. The accuracy of 3D printed concrete will benefit from stability of extrusion flow. Therefore, it is necessary to study the effective factors on extrusion flow. In this paper, the effects from fluidity and mass of loading in material tank on extrusion flow were discussed. The s…
Using substitute raw materials alongside the traditionally used limestone, clay, and marl to produce Portland cement clinker saves natural resources and achieves the recycling of waste in a new value-added process. Additionally, certain substitute raw materials also have the great advantage that they release no or very little CO2 during the burning process. This represents a si…
Prevention of the reaction of sodium and potassium hydroxides with silica [alkali-silica reaction – ASR] in concrete can be shaped by: using non-reactive aggregate, ensuring a low content of sodium and potassium oxides in the concrete mix, or using mineral additives. This article presents the results of research on preventing the ASR reaction in concrete by using mineral additi…