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Question

Difficulty: MediumExtracting Specific Details and Facts

Transcript of an interview broadcast between cultural reporter Valeria Ríos and architectural conservator Dr. Tomás Esquivel:

Valeria Ríos: Dr. Esquivel, traditional lime mortars frequently deteriorate in high-humidity seismic zones. What specific modification did your conservation team implement during the structural stabilization of the Santo Domingo cloister?
Dr. Tomás Esquivel: Rather than relying on synthetic polymers, which trap moisture behind colonial masonry, we integrated fermented nopal mucilage into the slaked lime mixture at a concentration of 4% by volume. This natural additive increases tensile flexibility by 35% while maintaining vapor permeability, preventing salt crystallization fractures.
Valeria Ríos: And how did that affect curing time?
Dr. Tomás Esquivel: While synthetic binders set in two days, our bio-mortar required twelve weeks of damp curing to reach optimal carbonation.

According to Dr. Esquivel, what specific modification was made to the lime mortar during the cloister restoration?

  1. A
    Applying synthetic polymers to shorten the mortar curing timeline to two days
  2. Incorporating fermented cactus mucilage at four percent by volume into the slaked lime mixtureAnswer
  3. C
    Increasing the slaked lime proportion by thirty-five percent to eliminate moisture permeability
  4. D
    Replacing degraded colonial masonry with impermeable basalt blocks across the cloister

Answer

Incorporating fermented cactus mucilage at four percent by volume into the slaked lime mixture
The correct answer accurately reflects Dr. Esquivel's explicit statement that the team integrated fermented nopal (cactus) mucilage into the slaked lime mixture at a concentration of four percent by volume to maintain breathability and increase elasticity.

Step-by-Step Solution

1
Locate the portion of the transcript where the interviewee responds to the question regarding the structural mortar modification.
Identified Dr. Esquivel's statement describing the incorporation of fermented nopal mucilage at 4% by volume into the slaked lime mixture.
Direct factual extraction requires isolating the interviewee's specific response to the targeted inquiry.
2
Cross-reference the isolated fact against the quantitative and qualitative details in the answer choices.
Confirmed that the 4% nopal additive matches the exact modification implemented, distinguishing it from rejected alternatives (synthetic polymers) and other figures (35% flexibility increase, 12-week curing).
Ensures that secondary metrics and contrasting statements are not conflated with the primary procedural change.

Key Concept

Extracting Specific Details and Facts from Spoken Interviews
Estimated Time:1m 15s
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Topics

Extracting Specific Details and Facts

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