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Record W4389267802 · doi:10.5897/jcect2023.0590

The effect of curing condition and use of additives on compressive strength of lime/pozzolana mortar

2023· article· en· W4389267802 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

fundA Canadian funder is recorded on the work.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueJournal of Civil Engineering and Construction Technology · 2023
Typearticle
Languageen
FieldEngineering
TopicFire effects on concrete materials
Canadian institutionsnot available
FundersInternational Development Research CentreAmerican Heart Association
KeywordsPozzolanaCuring (chemistry)Compressive strengthMaterials scienceCarbonationComposite materialMortarLimeCementMetallurgyPortland cementPozzolan

Abstract

fetched live from OpenAlex

Previous studies have shown that the obsidian pozzolana of the Sabaloka area processes a high pozzolana index. Therefore, it was chosen to study the effect of its curing condition and use of additives on the compressive strength of lime pozzolana mortar. The investigation revealed that the strength of pozzolana mortar is affected positively or increases with the curing condition (humidity, time, and temperature); also the strength increases with the addition of torona (2, 5 and 10%) which the higher the strength reveals the higher the percentage of additives (10%). This is probably due to carbonation. The indirect curing gave higher strength than that of direct curing when we compared the carry fine fractions, respectively for indirect and direct curing. Regarding carbonation, the possibility of absorption of CO2 from the atmosphere is greatly increased by the indirectly cured lime/pozzolana cubes because atmospheric CO2 rates with lime to produce caco3 which is accompanied by a gain in strength. The strength of pozzolana/lime mortar affected by the earing time. Long time of curing (120 days) gave the strength compared to the early strength 7 and 14 days; the same behaviour also for less finer (90 to 63 μ)  gave 16 N/cm2 for 120 days as compared to only 11 N/cm2 for 7 days. Key words: Pozzolana, curing condition, humidity, time, tempreture, torona, strength, carbonation.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.091
Threshold uncertainty score0.358

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.003
GPT teacher head0.190
Teacher spread0.187 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it