Investigation of Latvian Deposits Sands as Fine Additives for Concrete

Starptautiskais simpozijs “Smilts un stikls”: zinātnisko rakstu krājums 2017
Janīna Sētiņa, Liene Gulbe, Līga Paušus

Latvian quartz sand from deposits Bale and Skudras were examined. It is shown that grinding time remarkably influenced grain specific surface area which after grinding considerably increase to 3.19 m2/g. It is more than specific surface area of sand powder used in the production of concrete. There is found tha the pozzolanic activity of sand from Bale and Skudras deposits increased with the increasing of specific surface area. The study of morphology and crystalline phases for cement paste with grinded 12-14 μm disperse sands shows that during of the hydration process sand acts as a pore filler, as well as stimulating the formation of calcium silicate hydrate.

Keywords
pucolāna aktivitāte, kvarca smiltis, dispersitāte
Hyperlink
http://www.lu.lv/fileadmin/user_upload/lu_portal/projekti/vpp/files/IV_posma/SmiltsUnStikls/TEZES_Smilts_un_stikls_lapai.pdf

Sētiņa, J., Gulbe, L., Paušus, L. Investigation of Latvian Deposits Sands as Fine Additives for Concrete. In: Starptautiskais simpozijs “Smilts un stikls”: zinātnisko rakstu krājums, Latvia, Rīga, 3-4 March, 2017. Rīga: Latvijas Universitāte, 2017, pp.78-83. ISBN 978-9934-556-20-3.

Publication language
Latvian (lv)