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High-strength reinforced concrete pipe culvert and preparation method thereof

A reinforced concrete, high-strength technology, which is applied in the field of concrete box culverts, can solve the problems that the index of crack load and failure load is difficult to reach the standard, and the quality of high-strength reinforced concrete box culverts is poor.

Inactive Publication Date: 2015-11-25
ANHUI YUTE CONCRETE STRUCTURE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, concrete is the decisive factor to determine the performance of the box culvert, but the quality of the high-strength reinforced concrete box culvert formed after the existing concrete is poured under severe cold conditions is poor, mainly manifested in that the index of crack load and failure load is difficult. up to standard

Method used

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preparation example Construction

[0014] The invention provides a method for preparing a high-strength reinforced concrete box culvert, comprising:

[0015] 1) Soak the calcined shells in the activation solution, then filter, dry and sieve to obtain the calcined shells;

[0016] 2) Mixing cement, calcined shells, stones, sand, fly ash and water to prepare concrete;

[0017] 3) Concrete is poured into the reinforced skeleton, and then cured to obtain a high-strength reinforced concrete box culvert;

[0018] Wherein, the activation solution contains water, hydrochloric acid, sulfurous acid and dimercaptopropanol.

[0019] In the activation solution of the present invention, the amount of each component can be selected within a wide range, but in order to enable the activation solution to further activate the calcined shells, preferably, in step 1), relative to 100 parts by weight of water , the consumption of hydrochloric acid is 15-20 parts by weight, the consumption of sulfurous acid is 7-11 parts by weight,...

Embodiment 1

[0029] 1) Soak the calcined shells in the activation solution at 80°C for 16 hours (the weight ratio of the calcined shells to the activation solution is 100:400), then filter, dry at 135°C until the moisture content is lower than 1%, and pass through 200 mesh The activated shell calcined product is prepared by sieving; wherein, the activation solution contains water, hydrochloric acid, sulfurous acid and dimercapto propanol (weight ratio is 100:17:8:4).

[0030] 2) Mix cement, calcined shells, stones, sand, fly ash and water (weight ratio: 100:30:180:200:60:270) to make concrete.

[0031] 3) Concrete was poured into the steel frame, and then cured for 4 days under the conditions of -3°C and 55% relative humidity to prepare a high-strength reinforced concrete box culvert A1.

Embodiment 2

[0033] 1) Soak the calcined shells in the activation solution at 70°C for 12 hours (the weight ratio of the calcined shells to the activation solution is 100:300), then filter, dry at 120°C until the moisture content is lower than 1%, pass through 200 mesh The activated shell calcined product is prepared by sieving; wherein, the activation solution contains water, hydrochloric acid, sulfurous acid and dimercapto propanol (weight ratio is 100:15:7:3).

[0034] 2) Mix cement, calcined activated shells, stones, sand, fly ash and water (weight ratio: 100:20:150:180:50:250) to prepare concrete.

[0035] 3) Concrete was poured into the steel skeleton, and then cured for 3 days under the conditions of -5°C and 50% relative humidity to prepare a high-strength reinforced concrete box culvert A2.

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Abstract

The invention discloses a high-strength reinforced concrete pipe culvert and a preparation method thereof. The preparation method includes the steps that firstly, shell calcined matter is soaked into activation liquid, and then activated shell calcined matter is obtained through filtering, drying and screening; secondly, cement, the activated shell calcined matter, pebbles, sand, coal ash and water are mixed so that concrete can be prepared; thirdly, the concrete is poured into a reinforcement cage, and then the high-strength reinforced concrete pipe culvert is prepared through curing, wherein the activation liquid comprises water, hydrochloric acid, sulfurous acid and dimercaprol dimercaptopropanol. The high-strength reinforced concrete pipe culvert prepared through the method has excellent fracture load and failure load indexes.

Description

technical field [0001] The invention relates to a concrete box culvert, in particular to a high-strength reinforced concrete box culvert and a preparation method thereof. Background technique [0002] Culvert refers to a culvert constructed with reinforced concrete box-shaped pipe joints. Box culverts consist of one or more square or rectangular sections, generally made of reinforced concrete or masonry, but reinforced concrete is widely used, when the span is less than 4m, box culverts are used, for pipe culverts, high-strength reinforced concrete boxes The culvert is a cheap alternative, and the piers, upper and lower slabs are all poured in the same way. [0003] At present, the construction of box culverts generally adopts cast-in-place. The bottom layer is set in the excavated trench, a layer of concrete cushion is poured, and the processed steel bars are bound on site to support the inner and outer molds. Larger box culverts generally First pour the bottom half of th...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B14/02C04B20/10
Inventor 肖吕阳
Owner ANHUI YUTE CONCRETE STRUCTURE TECH
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