Results 201 to 210 of about 18,605 (255)
Some of the next articles are maybe not open access.
Effects of pozzolanic and non-pozzolanic nanomaterials on cement-based materials
Construction and Building Materials, 2019Abstract Although it has been verified that nanomaterials can improve the properties of cement-based materials, the research on the characteristics and mechanism of different types of nanomaterials is still inadequate. Two typical types of nanomaterials, nano-SiO2 (pozzolanic material) and nano-TiO2 (non-pozzolanic material), are utilized in this ...
Huigang Xiao +5 more
openaire +1 more source
Pozzolans and the Pozzolanic Reaction
1990The most often used mineral admixture in the modern concrete industry is the pozzolan. A pozzolan, and there are many of them, is defined as “siliceous or siliceous and aluminous materials which in themselves possess little or no cementitious value but will, in finely divided form and in the presence of moisture, chemically react with calcium hydroxide
openaire +1 more source
Pozzolanic activity tests as a measure of pozzolans' performance. Part 2
Magazine of Concrete Research, 2007Part 1 of the current paper demonstrated the lack of agreement between the results obtained from different standard pozzolanic activity tests. This can be explained by the significant differences observed in the recommended test procedures that, in some cases, allow variations in parameters which have a remarkable influence on the pozzolanic reaction.
G. P. Gava, L. R. Prudêncio
openaire +1 more source
Effect of volcanic ash pozzolan or limestone replacement on hydration of Portland cement
Construction and Building Materials, 2019The replacement of Portland cement (PC) with either supplementary cementitious material (SCM) or fillers, such as natural pozzolans (NP) or limestone powder (LP) respectively, is known to affect the chemical properties of concrete, thus influencing its ...
K. Celik +3 more
semanticscholar +1 more source
1969
Abstract Pozzolans are finely divided siliceous or siliceous and aluminous materials that are by themselves of little or no cementitious value but that react with calcium hydroxide in the presence of water at ordinary temperatures to form cementitious compounds.
openaire +1 more source
Abstract Pozzolans are finely divided siliceous or siliceous and aluminous materials that are by themselves of little or no cementitious value but that react with calcium hydroxide in the presence of water at ordinary temperatures to form cementitious compounds.
openaire +1 more source
POZZOLAN AND CEMENTS WITH POZZOLAN
2015Yapı mühendisliğinin temel malzemelerinden olan çimento, yapının dayanımı ve maliyeti bakımından önemli bir yere sahiptir. İnşaat sektöründeki gelişmeye paralel olarak çimento tüketimi de artmaktadır. Çimento üreticileri açısından, yeni yeni kaynaklar bulunarak üretimin minimum maliyetle yapılması ve talebin karşılanması, yapımcı ve kontrolluk ...
KAPLAN, Hasan, BİNİCİ, Hanifi
openaire +1 more source
Pozzolanas and Pozzolanic Materials
2019Developments in concrete construction mean that there are now a broader range of cementitious materials, than have traditionally been available, providing options for engineers to meet specific technical requirements. Pozzolanas and pozzolanic materials from natural deposits or industrial processes represent a group within this category.
McCarthy, Michael John +1 more
openaire +2 more sources
Limestone-filled pozzolanic cement
Cement and Concrete Research, 2000Fillers are specially selected, natural or artificial inorganic materials, which improve the physico-chemical and mechanical properties of the cement such as workability or water retention. They can be inert or have slightly hydraulic, latent hydraulic or pozzolanic properties.
M. Heikal, H. El-Didamony, M.S. Morsy
openaire +1 more source
Construction and Building Materials, 2019
Ultra-high performance concrete (UHPC), comprising of high amounts of cement and microsilica as binder and micro filler, is a new generation of concrete possessing highly dense microstructure with excellent mechanical properties, durability ...
Shamsad Ahmad +4 more
semanticscholar +1 more source
Ultra-high performance concrete (UHPC), comprising of high amounts of cement and microsilica as binder and micro filler, is a new generation of concrete possessing highly dense microstructure with excellent mechanical properties, durability ...
Shamsad Ahmad +4 more
semanticscholar +1 more source