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Soru

Zorluk: ZorDirect Fact Retrieval

Read the following technical passage regarding rapid runway repair and fill in the blanks with the exact details provided:

During rapid runway repair operations, airfield damage repair teams apply a quick-setting polymer grout to stabilize subgrade voids beneath cracked concrete slabs. Technical manual specifications dictate that the polymer grout must achieve a minimum compressive strength of 3,500 psi within 45 minutes of application at 72°F. Prior to injection, engineers must flush the core holes with dry nitrogen to eliminate residual subsurface moisture. If ambient temperatures drop below 40°F, pre-heating blankets must be maintained across the target slab for at least 3 hours to prevent thermal shock and incomplete resin curing.

Complete the following statements based strictly on the text:

Cevap:To eliminate residual subsurface moisture before injecting the polymer grout, technicians must flush the core holes with 【dry nitrogen】. Furthermore, if the ambient temperature drops below 40°F, pre-heating blankets must be kept on the slab for at least 【3 hours】.

Cevap

The core holes must be flushed with dry nitrogen, and the pre-heating blankets must be maintained for at least 3 hours.
The passage directly provides both required technical facts: 'dry nitrogen' is explicitly stated as the gas used to flush core holes prior to injection, and '3 hours' is specified as the minimum time pre-heating blankets must be maintained when temperatures are below 40°F.

Adım Adım Çözüm

1
Scan the text for the preparation step prior to grout injection addressing subsurface moisture.
The text states: 'Prior to injection, engineers must flush the core holes with dry nitrogen to eliminate residual subsurface moisture.'
This directly identifies 'dry nitrogen' as the required medium for the first blank.
2
Scan the text for the condition concerning ambient temperatures dropping below 40°F and locate the corresponding duration for heating blankets.
The text states: 'If ambient temperatures drop below 40°F, pre-heating blankets must be maintained across the target slab for at least 3 hours...'
This establishes '3 hours' as the exact quantitative requirement for the second blank.

Anahtar Kavram

Direct factual extraction of technical parameters and procedures directly stated in a passage.
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Konular

Direct Fact Retrieval

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