Results 171 to 180 of about 485 (209)

Pozzolanic activation of metakaolin

Advances in Cement Research, 1992
Metakaolin may be calcined without grinding and suitably activated by Ca(OH)2, Na2SO4, CaSO4 (beta anhydrite) and/or NaOH. The best strengths, 50 MPa from mortar cubes at 18 months, were obtained using Ca(OH)2 and CaSO4 activators. The handling and set properties are similar to those of Portland cement; aluminous C-S-H gel is the best binder.
P. S. De Silva, F. P. Glasser
openaire   +1 more source

Influence of the fineness of pozzolan on the strength of lime natural-pozzolan cement pastes

Cement and Concrete Research, 1994
Abstract The fineness of a cement is an important factor affecting the rate of strength development. This paper examines the importance of the fineness of natural pozzolans to the strength development of lime-pozzolan cements (LPCs). A natural pozzolan from Bolivia, which is typical of natural pozzolans found in South and Central America, was ground ...
Robert L. Day, Caijun Shi
openaire   +1 more source

Greening of Mortars with Pozzolans

Journal of ASTM International, 2006
Abstract Growing interest in sustainable building has created a strong interest in fly ash and other coal combustion products (CCPs). Emergence of agencies like the U.S. Green Building Council (USGBC) and the Coal Combustion Products Partnership (C2P2) of the USEPA has accelerated this trend. Their primary goal is sustainable development,
K Bargaheiser, DH Nordmeye
openaire   +1 more source

The measurement of pozzolanic activity

Cement and Concrete Research, 1977
Abstract Some comments are made on the applicability of the hydrofluoric acid method for determining pozzolanic activity. It is pointed out that in addition to silica some other constituents of pozzolanic materials such as pfa are also soluble in HF and the conductance of the solution may, therefore, not be directly relatable to the active silica ...
A.J. Majumdar, L.J. Larner
openaire   +1 more source

Pozzolanas and Pozzolanic Materials

2019
Developments 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, Dyer, Thomas Daniel   +1 more
openaire   +2 more sources

Greening of Mortars with Pozzolans

2008
Growing interest in sustainable building has created a strong interest in fly ash and other coal combustion products (CCPs). Emergence of agencies like the U.S. Green Building Council (USGBC) and the Coal Combustion Products Partnership (C2P2) of the USEPA has accelerated this trend.
Keith Bargaheiser, D. Herbert Nordmeyer
openaire   +1 more source

Characterization and quantification of the pozzolanic reactivity of natural and non-conventional pozzolans

Cement and Concrete Composites, 2022
Jinyoung Yoon, Khashayar Jafari, Raikhan Tokpatayeva, Sulapha Peethamparan, Jan Olek, Farshad Rajabipour   +5 more
openaire   +1 more source

Pozzolanicity verification of combustion metamorphic rocks from coalfield fire zones in China

Journal of Loss Prevention in the Process Industries, 2021
Bobo Shi, Fubao Zhou
exaly  

Pozzolanic cements

Journal of the Society of Chemical Industry, 1935
R. G. Franklin, A. E. J. Vickers
openaire   +1 more source

Effects of a red mud mineralogical composition versus calcination on its pozzolanicity

Construction and Building Materials, 2023
Shaoliang Chen, A Ghani Razaqpur, Tuanjie Wang   +2 more
exaly