Potential of finely ground limestone powder to benefit ultra-high performance concrete mixtures

2017 ◽  
Vol 141 ◽  
pp. 335-342 ◽  
Author(s):  
Jedadiah F. Burroughs ◽  
Jay Shannon ◽  
Todd S. Rushing ◽  
Kevin Yi ◽  
Quinn B. Gutierrez ◽  
...  
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Limestone Powder ◽  
Ultra High Performance Concrete ◽  
Concrete Mixtures ◽  
Ground Limestone

Effect of the Type of Silica Fume and Filler on Mechanical Properties of Ultra High Performance Concrete

2018 ◽  
Vol 774 ◽  
pp. 349-354 ◽  
Author(s):  
Kyung Taek Koh ◽  
Seung Hun Park ◽  
Gum Sung Ryu ◽  
Gi Hong An ◽  
Byung Suk Kim
Keyword(s):  
Mechanical Properties ◽  
Silica Fume ◽  
High Performance ◽  
High Performance Concrete ◽  
Strength Loss ◽  
Limestone Powder ◽  
Cement Kiln ◽  
Ultra High Performance Concrete ◽  
Silica Powder ◽  
Kiln Dust

The large quantities of expensive materials such as steel fiber, silica fume, filler and superplasticizer required in the composition of Ultra-High Performance Concrete (UHPC) make its fabrication cost significantly higher than ordinary concrete. This study evaluates the effect of the type of silica fume and filler on mechanical properties of UHPC. The evaluation shows that the use of Zr silica powder instead of common silica fume improves significantly the fluidity of UHPC without loss of the strength and enables to reduce the amount of superplasticizer by maximum 70%. Moreover, the evaluation of the effect of the type and size of the filler reveals that modifying the size of the filler from 2 μm to 4 μm enhances the fluidity without strength loss and that the use of cement kiln dust (CKD) and limestone powder can achieve UHPC with compressive strength higher than 150 MPa. These results show that the use of the materials such as Zr silica powder, CKD and limestone powder can help to fabricate more economic UHPC.

scholarly journals Effect of Nanomaterial on the Properties of Ultra High Performance Concrete

2021 ◽  
Vol 8 (2) ◽  
pp. 1-10
Author(s):  
Nada Mahdi Fawzi Aljalawi
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Fresh Concrete ◽  
Concrete Strength ◽  
Cement Industry ◽  
Test Method ◽  
Limestone Powder ◽  
Negative Effects ◽  
Ultra High Performance Concrete ◽  
Powder Lead

In recent years, there is a great interest in many countries to use the limestone powder in produce concrete by the replacing it as a proportion of cement weight able to improving the properties of the concrete as well as this type of powder lead to the reducing concrete cost and the CO2 emissions through the process of cement industry. This study examined of the effect of the limestone powder indifferent proportion (5, 10, 15, and 20) % replaced by the weight of cement on the properties of Ultra High Performance Concrete). Where it included five tests consisted of workability of fresh concrete (slump test method), compressive strength, tensile strength, water absorption, and density. The Results show the possibility of replacing 15% of the cement weight with limestone powder lead to improving of concrete strength but negative effects on the properties observed as the amount of limestone powder exceeds this ratio.

Study on the Ultra High Performance Concrete Containing Limestone Powder

2011 ◽  
Vol 250-253 ◽  
pp. 686-689 ◽  
Author(s):  
Shu Hua Liu ◽  
Zhi Yang Gao ◽  
Mei Juan Rao
Keyword(s):  
Compressive Strength ◽  
High Temperature ◽  
High Performance ◽  
High Performance Concrete ◽  
Limestone Powder ◽  
Ultra High Performance Concrete ◽  
The Cost

A new kind of ultra high performance concrete containing limestone powder was studied in this paper. The results show that the compressive strength of the ultra high performance concrete containing limestone powder is higher than 120MPa; the hydration activity and the accelerating effect of limestone powder are obvious under the condition of high temperature. The limestone powder hydrated and formed calcium monocaboaluminate hydrates. The cost would be reduced when adding certain amount of limestone powder when confect ultra high performance concrete. It is economical and feasible.

scholarly journals The Role of Supplementary Cementitious Materials (SCMs) in Ultra High Performance Concrete (UHPC): A Review

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1472
Author(s):  
Sungwoo Park ◽  
Siyu Wu ◽  
Zhichao Liu ◽  
Sukhoon Pyo
Keyword(s):  
Compressive Strength ◽  
High Performance ◽  
High Performance Concrete ◽  
Cementitious Materials ◽  
Supplementary Cementitious Materials ◽  
Limestone Powder ◽  
Ultra High Performance Concrete ◽  
Environmental Aspect ◽  
Material Requirement ◽  
Strength And Durability

Although ultra high-performance concrete (UHPC) has great performance in strength and durability, it has a disadvantage in the environmental aspect; it contains a large amount of cement that is responsible for a high amount of CO2 emissions from UHPC. Supplementary cementitious materials (SCMs), industrial by-products or naturally occurring materials can help relieve the environmental burden by reducing the amount of cement in UHPC. This paper reviews the effect of SCMs on the properties of UHPC in the aspects of material properties and environmental impacts. It was found that various kinds of SCMs have been used in UHPC in the literature and they can be classified as slag, fly ash, limestone powder, metakaolin, and others. The effects of each SCM are discussed mainly on the early age compressive strength, the late age compressive strength, the workability, and the shrinkage of UHPC. It can be concluded that various forms of SCMs were successfully applied to UHPC possessing the material requirement of UHPC such as compressive strength. Finally, the analysis on the environmental impact of the UHPC mix designs with the SCMs is provided using embodied CO2 generated during the material production.

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