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Wyszukujesz frazę "soil stabilization" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Improvement of a subgrade soil by using EarthZyme and cement kiln dust waste
Autorzy:
Abdulkareem, Ahmed Hazim
Eyada, Saadoon O.
Mahmood, Nabeel S.
Powiązania:
https://bibliotekanauki.pl/articles/1852537.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stabilizacja gruntu
ściskanie nieskrępowane
EarthZyme
pył z pieca cementowego
nanomateriał
soil stabilization
unconfined compressions
cement kiln dust
nanomaterial
Opis:
Soil stabilization techniques are widely used for road construction to improve the properties of the subgrade materials. Using new additives and stabilizers to improve soil properties can reduce the costs of construction and reduce the possible negative effects of these materials on the environment. The purpose of this study was to evaluate the use of a liquid based nano-material called EarthZyme (EZ) and cement kiln dust (CKD) as admixtures to improve the soil properties. A mixture of two soils was used in this study which were prepared from mixing sand soil and fine-grained soil. Compaction tests were performed on the soil that was stabilized with the CKD to determine the density-water content relationships. Unconfined compression tests were also conducted on specimens without treatment, specimen treated with the CKD only, and specimens treated with the CKD and the EZ after curing period for seven days. The obtained results indicated that adding the CKD to the soil decreased the values of the unconfined compression strength (UCS) from 5 to 15 percent. However, adding the CKD reduced the maximum dry density (MDD) from 10 to 12 %. As discussed herein, soil stabilization with the EZ had insignificant effects on the results obtained from the unconfined compression test.
Źródło:
Archives of Civil Engineering; 2021, 67, 2; 525-536
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The development of an ecofriendly binder containing high volume of cement replacement by incorporating two by-product materials for the use in soil stabilization
Autorzy:
Jafer, Hassnen
Jawad, Ibtehaj
Majeed, Zaid
Shubbar, Ali
Powiązania:
https://bibliotekanauki.pl/articles/35522654.pdf
Data publikacji:
2021
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
soil stabilization
eco-friendly binder
ordinary Portland cement
ground granulated blast furnace slag
cement kiln dust
cement replacement
Opis:
The development of an ecofriendly binder containing high volume of cement replacement by incorporating two waste materials for the use in soil stabilization. This paper investigates the possibility of replacing ordinary Portland cement (OPC) by two waste and by-product materials for the use of a silty clay soil stabilization purpose. The soil was treated by 9.0% OPC where this mixture was used as a reference for all tests. Two by-product materials: ground granulated blast furnace slag and cement kiln dust were used as replacement materials. Consistency limits, compaction and unconfined compression strength (UCS) tests were conducted. Scanning electron microscopy (SEM) analysis was carried out for the proposed binder to investigate the reaction of products over curing time. Seven curing periods were adopted for all mixtures; 1, 3, 7, 14, 28, 52, and 90 days. The results showed that the strength development over curing periods after cement replacement up to 45–60% was closed to those of the reference specimens. The microphotographs of SEM analysis showed that the formation of Ettringite and Portladite as well as to calcium silicate hydrate gel was obvious at curing periods longer than 7 days reflected that the replacing materials succeed to produce the main products necessary for binder formation.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2021, 30, 1; 62-74
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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