Figure 7 - available via license: Creative Commons Attribution 4.0 International
Content may be subject to copyright.
Workability of mortars using ternary blended cements: mixtures RHA4+RHA1 and RHA-4+FA. Comparison to the workability for the mortars containing 5-20% RHA-4.
Source publication
Rice husk ash (RHA) is agricultural waste with high silica content that has had proven technical feasibility as a pozzolanic material since the 1970s. Notwithstanding, its use in mortars and concrete is limited by the standards currently utilized in some countries where RHA production is high and the aforementioned pozzolanic material is not standa...
Contexts in source publication
Context 1
... RHA-4 and RHA-1 (they presented very different behaviors in workability terms, as previously demonstrated) allowed a higher replacement percentage to be applied, and workability improved compared to the sole use of reactive RHA-4. Figure 7 shows the workability of the mortars with different proportions of RHA-4 and RHA-1. Low workability (113 mm) was obtained using the 20% RHA-4 replacement. ...
Context 2
... 6a shows (dashed line) the workability of the mortars with the 10-20% level of replacing cement with FA: a slight increase in %W occurred with rising replacement percentages. Figure 7 depicts (dashed line) the workability improvement by increasing the quantity of FA added to RHA-4. The 20% replaced system with 10%RHA-4+10%FA yielded 151 mm workability and the 30% replaced one with 10%RHA-4+20%FA yielded 155 mm. ...
