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Temperature and effective alkali effect on brown pulp kraft cooking
(2021-01-01)
One way to obtain high quality pulp production is to improve selectivity delignification of step, maximize yield. Brown pulp yield and chemical composition were studied, with variation of temperature and effective alkali ...
Effect of alkali treatment time and extraction time on agar from Gracilaria vermiculophylla
(Journal of Applied Phycology, 2008)
The effect of alkali-treatment time and extraction time of native agar and alkali-treated agar obtained from Gracilaria vermiculophylla were studied. The response characteristics were mainly agar yield and gel strength. ...
Portlandite consumption by red ceramic waste due to alkali activation reaction
(ANTAC - Associação Nacional de Tecnologia do Ambiente Construído, 2020)
Almond-shell biomass ash (ABA): A greener alternative to the use of commercial alkaline reagents in alkali-activated cement
(2021-07-05)
The use of almond-shell biomass ash (ABA) as an alternative component to the commercial reagents used in the activation of blast furnace slag (BFS) systems is investigated. The presence in its chemical composition of a ...
Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction
(Elsevier Science, 2010-10)
It has been known for a long time that strained, microcrystalline or cryptocrystalline quartz-bearing aggregates may cause alkali-silica reactions in concrete. Studying the relationship between deformation processes and ...
Alkali–silica reaction in plain and fibre concretes in field conditions
(Springer, 2019-03)
This paper presents an experimental study on the effects of alkali–silica reaction (ASR) in concrete blocks placed outdoors, exposed to weather conditions. To promote different reaction kinetics and damage levels, the size ...