آخرین محصولات
A review on effects of limestone powder on the properties of …
Using LS to replace cement reduces the properties of the concrete. Limestone powder (LS) is one of the mineral materials in concrete due to its wide availability and low …
Effectiveness of Limestone Powder as a Partial Replacement of Cement …
The objective of this study is to investigate the performance of normal- and high-strength concretes including limestone powder (LP) through their mechanical properties. Moreover, sustainable flat plates made of these concretes were investigated through their punching strength. For this purpose, two different types of concrete (normal- and high …
Analysis of the Effect of Various Types of …
Obtained results indicate that both tensile and compressive strength decreases with the increase of the limestone content in cement. Limestone can worsen or improve workability, depending on...
Effect of limestone waste on the hydration and …
The benefits of limestone waste as a partial replacement of cement have been well established. In this paper, to better understand the effect of limestone waste on the properties of cement-based materials, the hydration process …
The Use of Limestone in Portland Cement: A State-of-the …
Comparison of the water:cement ratios for 0% and 5% limestone contents shows that the poor quality limestone did not affect the water demand for the 5% limestone cement, but had a deleterious ...
Effectiveness of Limestone Powder as a Partial Replacement of Cement …
Recent research endeavors in cement production have pivoted towards mitigating its environmental footprint. A promising alternative explored in these efforts is limestone, which offers distinct advantages in terms of structural purity, availability, and cost-effectiveness compared to traditional cement.
Portland-Limestone Cement
As the surface area increases, water absorption increases. Increasing the fineness of the cement or limestone will add more surface area. Water absorption will therefore increase and bleeding will decrease. The use of limestone in the cement can slightly decrease bleeding based on its fineness but generally does not have an effect. Set Time ...
Effect of Limestone Powder Mixing Methods on the …
Vijayalakshmi et al. confirmed that LP content within 15% had no adverse effect on concrete strength. Nikbin et al. showed that as the LP content ... Poon C.S. Heat of hydration of Portland high-calcium fly ash cement incorporating limestone powder: Effect of limestone particle size. Constr. Build. Mater. 2014; 66:410–417. doi: 10.1016/j ...
Effect of Cement Type and Limestone Powder Content …
All mixtures contain paste with cement, silica fume and a water/binder ratio of 0.38 by mass. The concrete composition consists of 47 vol.% paste and 53 vol.% aggregates. The replacement of the cement by limestone powder and the amount of PCE was adapted according to the investigations. In a first step, we investigated the influence of
Effects of Intergrinding 12% Limestone with Cement on Properties …
Cement properties, including chemical and physical properties and mortar properties, such as compressive strength, drying shrinkage, and sulfate expansion were investigated comprehensively for...
Effect of limestone calcined clay cement (LC3) on the fire …
More importantly, limestone calcined clay cement shows considerable promise in terms of reduction in CO2 emissions and energy demand in both cement and concrete, with more improvement in higher ...
Effect of Limestone Powder Mixing Methods on the …
Using limestone powder (LP), the by-product of manufactured sand, to replace part of fly ash (FA) or manufactured sand could not only turn waste into treasure and decrease the price of concrete, but could also enhance the performance …
Understanding Limestone in Cement
The limestone acts as a seed crystal for the cement, better distributing the reaction products and increasing the reactivity of the cement. As there is always unhydrated cement in the concrete, this change will have no …
Effectiveness of Limestone Powder as a Partial Replacement …
Recent research endeavors in cement production have pivoted towards mitigating its environmental footprint. A promising alternative explored in these efforts is limestone, which …
Analysis of the Effect of Various Types of Limestone as a …
Obtained results indicate that both tensile and compressive strength decreases with the increase of the limestone content in cement. Limestone can worsen or improve workability, depending on...
Recent Developments on the Effects of Micro- and Nano-Limestone …
Limestone is commonly used in cement concrete due to its unique nature and type. It has physical effects (nucleation effect and dilution effect) and chemical effects on the hydration process of cement.
A review on effects of limestone powder on the properties of concrete
Using LS to replace cement reduces the properties of the concrete. Limestone powder (LS) is one of the mineral materials in concrete due to its wide availability and low cost. This paper discusses effects of LS on the workability, setting time, shrinkage, mechanical properties and durability of concrete.
The effects of limestone aggregate on concrete properties
Some of these benefits include good strength, low possibility of alkali-silica reaction and the decrease in drying shrinkage in concrete. This research discusses the consumption and general characteristics of the limestone aggregate in USA and Japan.
Effect of limestone aggregate type and water–cement ratio on concrete …
This article investigates the effects of water–cement (w–c) ratio and coarse limestone aggregate type on compressive strength of concrete. In this study, Ceyhan (Adana) limestone produced in quarries was used as aggregate material, and its physical, chemical and mechanical properties were determined.
Evaluation of the Efficiency of Limestone Powder …
To assess the dilution effect, a modification to Féret's equation is used to calculate an efficiency factor for the limestone powder when compared to cement. To measure the environmental impact, a life cycle assessment is conducted …
Effects of Limestone Powder on Self-compacting Concrete Properties
This paper aims to optimize high-volume limestone powder in sustainable ultra-high performance concrete (UHPC), and characterize its roles on plasticization effect, hydration kinetics ...
Effect of Limestone Powder Mixing Methods on the …
Using limestone powder (LP), the by-product of manufactured sand, to replace part of fly ash (FA) or manufactured sand could not only turn waste into treasure and decrease the …
Effects of clay type and component fineness on the …
Limestone calcined clay cement (LC3) is emerging as an alternative to Portland cement, offering economic advantages, reduced CO2 emissions, and mechanical properties on par with Portland cement. Central to the effective utilization of LC3 is understanding how the fineness of its components affects its performance. The current study investigates limestone …
Evaluation of the Efficiency of Limestone Powder in Concrete and …
Due to the dilution effect when partially replacing cement, there is a reduction in the concrete's physical properties. ... This allows for an evaluation of the various cement/limestone powder ...
Effect of cement substitution by limestone on the hydration …
Finally the effects of cement replacement by limestone, on the price and the CO 2 emission of UHPC were estimated and summarized in Table 5; it should be noted that the limestone used in this investigation was quite expensive as it had a controlled particle size distribution as this is easier to use in laboratory studies. However the unit bulk ...
Evaluation of the Efficiency of Limestone Powder in Concrete …
To assess the dilution effect, a modification to Féret's equation is used to calculate an efficiency factor for the limestone powder when compared to cement. To measure the environmental impact, a life cycle assessment is conducted on concrete …
Effect of limestone waste on the hydration and …
The benefits of limestone waste as a partial replacement of cement have been well established. In this paper, to better understand the effect of limestone waste on the …
Synergistic Effects of SAP, Limestone Powder and White Cement …
This modulatory effect of limestone powder mitigates the adverse influence of SAP on the mechanical characteristics of white fair-faced concrete, culminating in enhancements in both compressive and tensile strengths. ... White cement and limestone powder react with water in the presence of moisture, forming hydrated calcium silicate (C-S-H) and ...
Effects of Intergrinding 12% Limestone with …
Cement properties, including chemical and physical properties and mortar properties, such as compressive strength, drying shrinkage, and sulfate expansion were investigated comprehensively for...
ANALYSIS OF THE EFFECT OF VARIOUS TYPES OF …
Good results are achieved by using limestone in the technology of self-compacting concretes, in which it is important to ensure proper rheological properties (as low as possible yield stress and adequate viscosity) ensuring the possibility of self-compacting [1].
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