Mechanical and cementitious characteristics of ground granulated blast furnace slag and basic oxygen furnace slag blended mortar

Tsai, Chia-Jung; Huang, Ran; Lin, Wei‐Ting; Wang, His-Ning

doi:10.1016/j.matdes.2014.04.002

Cited by 75 publications

(48 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the GGBS contains alumina (13.85%- Table 3) therefore, the lime should also react with the amorphous alumina in the GGBS to produce calcium aluminum silicate hydrates (CASH) (Osborne 1999) (13). GGBS (a latent hydraulic binder rather than a pozzolan) is supposed to contain a small amount of clinkers therefore, on hydration, the clinkers will release some lime that will then be used in the pozzolanic reaction.…”

Section: Impact Of Ggbs In Lime Mortarsmentioning

confidence: 99%

Influence of aggregate and supplementary cementitious materials on the properties of hydrated lime (CL90s) mortars

Pavía

Aly

2016

Mater. construcc.

View full text Add to dashboard Cite

Hydrated lime is a historic material currently used in conservation. It hardens slowly by carbonation slowing construction however, supplementary cementitious materials accelerate hardening enhancing strength. Hydrated-lime mortars with rice husk ash-RHA-; ground granulated blastfurnace slag-GGBS-and increasing amounts of two aggregates were studied. Increasing aggregate lowered strength as interfacial zones proliferate; it lowered hygric properties and raised water demand. Aggregate content/composition didn't affect the high water retention. For the higher aggregate contents (90 days), limestone mortars are c.20% stronger than silica mortars while the (1:1) silica sand mortars are 56% stronger in flexion. Additions increased strength with little impact on hygric properties. GGBS increased strength c.six times. RHA increased strength with little impact on hygric properties due to its great specific surface and high water-demand increasing porosity. GGBS and RHA properties ruling hydrate production and the kinetics of the pozzolanic reaction are considered partially responsible for the mortar property variation. RESUMEN: Influencia del árido y materiales cementantes suplementarios en las propiedades de los morteros de cal hidratada.La cal hydratada es un material histórico que se usa en conservación. Endurece despacio por carbonatacion pero materiales cementantes suplementarios aceleran su endurecimiento. Se estudian morteros de cal con escoria granulada molida de alto horno (GGBS) y ceniza de cascara de arroz (RHA) con cantidades variables de dos tipos de árido. GGBS multiplicó por 6 la resistencia mecánica del mortero de cal. RHA afectó ligeramente las propiedades hídricas por su elevada superficie específica que incrementa el agua de mezclado aumentando la porosidad. El aumento de árido redujo la resistencia mecánica, trabajabilidad y propiedades hídricas del mortero. La cantidad/composición del árido no afectó la alta retención de agua. Los morteros de árido de caliza (2:1 y 3:1) incrementaron un 20% su resistencia a la compresión con respecto a los de arena de sílice mientras que la resistencia a la flexión de los arena de sílice (1:1) es 56% superior que sus equivalentes de caliza.

show abstract

Section: Impact Of Ggbs In Lime Mortarsmentioning

confidence: 99%

Influence of aggregate and supplementary cementitious materials on the properties of hydrated lime (CL90s) mortars

Pavía

Aly

2016

Mater. construcc.

View full text Add to dashboard Cite

show abstract

“…In GGBS of Table 2, the specific gravity is 2.89 g/cm 3 with 5892130 cm 2 /g as the specific surface. Major chemical compositions consist of CaO (41.16%), SiO 2 (33.42%), Al 2 O 3 (13.35%) and MgO (7.76%) respectively [11,12].…”

Section: Ggbs Powdermentioning

confidence: 99%

“…Table 3 shows the compressive strength test results of mortar made from each of the seven mixtures of CFFA and GGBS blended The test results found the materials of CFFA and GGBS mixing together can react with water and produce strength that varies with the ratio. Refer to the paper [11,12], the blended material of GGBS and GGBOS, which contains a certain amount of CaO mixes with water produces both an alkali-activated reaction and pozzolanic reaction leading to the desired strength. Table 2 displays 37.8% CaO content of the CFFA component, which can be speculated to be one of reasons.…”

Section: Panalytical X'pert Promentioning

confidence: 99%

“…This reaction creates the alkaline environment, which is similar to only using Portland cement [10]. The referenced papers [11,12] reported that mixing ground-granulated basic oxygen slag (GGBOS) with ground-granulated basic blast furnace slag (GGBS) as blended cement in compliance with ASTM C-595M-13 that GGBOS is feasible to use as an alkali activator for GGBS with optimal mixing ratio is 40%:60% for generating strength.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Utilizing residues of CFB co-combustion of coal, sludge and TDF as an alkali activator in eco-binder

Huang

Tsai

et al. 2015

Construction and Building Materials

Self Cite

View full text Add to dashboard Cite

“…As demand increases for NHL, the consumption of energy and resources, as well as the generation of carbon dioxide and harmful dust, will rise during its production (Tsai et al, 2014). Besides this consideration, huge amounts of masonry wastes (waste brick and stone) are generated in modern industry, construction and scientific research.…”

mentioning

confidence: 99%

Investigation on masonry waste aggregate natural hydraulic lime mortars incorporating diatomite

Xu¹,

Wang²,

Ma³

et al. 2015

Magazine of Concrete Research

View full text Add to dashboard Cite

In order to make the most of energy and resources and obtain mortars with beneficial properties, diatomite is employed in this paper as a partial replacement of natural hydraulic lime (NHL) and masonry waste as aggregate to prepare mortars with different water-binder ratios (w/b). Tests are conducted after 14, 28 and 90 d of curing, namely, compressive and flexural strength, microstructure, mass variation, apparent density, water absorption, sulfate resistance and, additionally, percentage strength and pozzolanic indexes are used to characterise the role of the pozzolanic effect in improving the mortars' strength. The results show that the introduction of diatomite improves the strength of mortars. The enhancement of strength is attributed to the pozzolanic reaction between diatomite and calcium hydroxide in NHL, which proceeds noticeably after 14 d of curing. The diatomite replacement percentage and w/b influenced apparent density, water absorption and strength of mortars; high density and low water absorption are propitious to strength enhancement. Sulfate resistance of mortars prepared with diatomite incorporation is improved greatly. The percentage strength and pozzolanic indexes of mortars indicate that diatomite has a significant pozzolanic effect and is a good active mineral admixture for NHL mortars.

show abstract

Mechanical and cementitious characteristics of ground granulated blast furnace slag and basic oxygen furnace slag blended mortar

Cited by 75 publications

References 30 publications

Influence of aggregate and supplementary cementitious materials on the properties of hydrated lime (CL90s) mortars

Influence of aggregate and supplementary cementitious materials on the properties of hydrated lime (CL90s) mortars

Utilizing residues of CFB co-combustion of coal, sludge and TDF as an alkali activator in eco-binder

Investigation on masonry waste aggregate natural hydraulic lime mortars incorporating diatomite

Contact Info

Product

Resources

About