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Construction method for delivering concrete through pump

A pumping concrete and construction method technology, which is applied to the processing of building materials, construction, building construction, etc., can solve the problems of large slump of pumped concrete, easy occurrence of dry shrinkage cracks, and increased concrete costs, and achieve the goal of pouring The effect of reducing comprehensive cost, saving engineering construction cost and shortening construction period

Inactive Publication Date: 2007-02-21
CHENGJIAN BUILDING ENG QINHUANGDAO CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the requirement of pumpability of pumped concrete, the particle size of the pumped concrete is relatively small, the sand rate is relatively large, and the cementitious material is increased, which leads to a large slump of the pumped concrete and a long initial setting time. Low early strength, prone to dry shrinkage cracks, and relatively increase the cost of concrete

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  • Construction method for delivering concrete through pump
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Examples

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Embodiment 1

[0022] The concrete pouring project of the basement floor of a residential area building, the engineering concrete floor is 1.5m thick, the design is C35S8 impermeable concrete, and the pouring volume is 2300m 3 , is a large volume of concrete pouring.

[0023] Specific construction method:

[0024] 1. The pumped concrete shall be provided by the ready-mixed concrete company as required. The maximum particle size of the stones in the concrete shall not exceed 31.5mm, and the slump shall be controlled at 15cm±2cm.

[0025] 2. Prepare dry stones with a particle size of 40-60mm at the construction site according to 10% of the weight of the pumped concrete.

[0026] 3. Transport the prepared pumped concrete to the pouring area through the delivery pump. First, pour a layer of pumped concrete with a thickness of 400mm. Sprinkle evenly on the surface of the poured concrete, vibrate again with a vibrator until all the dry stones are buried by the concrete, and then evenly sprinkle ...

Embodiment 2

[0029] Concrete pouring for the roof of the brick-concrete structure office building, the roof of each floor is 58m long, 16m wide, the concrete thickness of the floor slab is 120mm, and the concrete pouring volume is 112m 3 , using C20 ready-mixed concrete.

[0030] Specific construction method:

[0031] 1. The pumped concrete shall be provided by the ready-mixed concrete company as required. The maximum particle size of the stones in the pumped concrete shall not exceed 31.5mm, and the slump shall be controlled at 15cm±2cm.

[0032] 2. Prepare dry stones with a particle size of 15-40mm at the construction site according to 14% of the total weight of the pumped concrete.

[0033] 3. Transport the pumped concrete prepared according to the requirements to the pouring area, first pour 100mm thick pumped concrete on the slab surface, vibrate with a vibrator and a flat vibrator, and evenly scatter the prepared dry stones On the surface of the pumped concrete that has been poured...

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Abstract

The present invention relates to a construction method for pumping concrete. Said construction method includes the following several portions: equipment for pumping concrete, conveyance and pouring concrete. It is characterized by that in the course of pouring pumped concrete the dried stone whose grain size is 15-60mm can be uniformly added into the pumped concrete, and its added quantity is less than 16% of pumped concrete weight. It can improve the pumped concrete property and can reduce construction cost.

Description

technical field [0001] The invention relates to a concrete construction method, in particular to a construction method for pumping concrete. Background technique [0002] At present, with the development of the construction industry, the pumping of concrete is widely used. Pumping technology solves many problems in the horizontal long-distance and vertical transportation of concrete, reflecting the progress of building construction technology. However, due to the requirement of pumpability of pumped concrete, the particle size of the pumped concrete is relatively small, the sand rate is relatively large, and the cementitious material is increased, which leads to a large slump of the pumped concrete and a long initial setting time. Low early strength, prone to dry shrinkage cracks, and relatively increase the cost of concrete. Contents of the invention [0003] The purpose of the present invention is to provide a method that can effectively improve the performance of pump...

Claims

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Application Information

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IPC IPC(8): E04G21/02E04G21/04
Inventor 李成玉韩可华付亚萍张银国
Owner CHENGJIAN BUILDING ENG QINHUANGDAO CITY
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