Physical-mechanical assessment for soil-cement blocks including rice husk ash
Source abstract
Abstract
Despite its pozzolan properties, a great percentage of rice husk ash (RHA) is disposed as waste, thus generating adverse environmental impacts. This study was intended to assess compressive strength and absorption in soil-cement block when including RHA as a substitute for Portland cement (PC). This methodology consisted on preparing three mixtures of soil-cement including different RHA percentages as a substitute for PC: M1 (10% PC + 0% RHA), M2 (7.5% PC + 2.5% RHA) and M3 (5% PC + 5% RHA). Results show that compressive strength decreases 12.64% and 26.78% in M2 and M3, respectively. Regarding water absorption, it increases when adding RHA. M2 reported the best results for analyzed properties. However, for both properties, values are present within ranges recommended to be used in construction sector based on Brazilian and Bolivian codes, NBR 10834 and NB 1211003, respectively. Using RHA is viable in order to produce soil-cement blocks as a substitute for PC; however, further tests (e.g. durability, flexural strength, tensile strength, etc.) –in order to determine optimal replacement percentages for quality assurance in produced material- are required.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Geotechnical Engineering and Soil Stabilization · Concrete and Cement Materials Research · Recycling and utilization of industrial and municipal waste in materials production
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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