Strength and Permeability Characteristics of Superfine Cement and Fine Fly Ash Mixture Grouted Sand

Küçük Resim Yok

Tarih

2020

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Amer Concrete Inst

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

The strength and permeability properties of various graded sand specimens grouted with superfine cement suspensions containing an additive of fine fly ash were experimentally investigated. To start with, such rheological properties as viscosity, bleeding, and setting time of superfine cement and fine fly ash mixture suspensions with various water-cement ratios (w/c) were determined. Then, the injectability tests with the mixtures were conducted on various graded sand samples. Finally, the unconfined compressive strength and the falling head permeability tests were run on the grouted specimens at different time intervals. The setting times and viscosities of superfine cement and fine fly ash mixture suspensions increased, but their bleedings were reduced. The addition of fine fly ash to superfine cement suspensions reduced the groutability of suspensions and hence increased the grouting pressure of sand specimens. The unconfined compressive strength of superfine cement grouted sand samples were increased and their permeabilities were reduced with the addition of fine fly ash. Moreover, the addition of fine fly ash to superfine cement grouts accelerated the grouted specimens' strength gain.

Açıklama

Anahtar Kelimeler

fine fly ash, injectability, permeability, strength, superfine cement

Kaynak

Aci Materials Journal

WoS Q Değeri

Q3

Scopus Q Değeri

Q2

Cilt

117

Sayı

6

Künye