Construction method of large-volume concrete foundation
A large-volume concrete and construction method technology, applied in the direction of infrastructure engineering, construction, etc., can solve the problems of large-volume concrete foundation cracking, etc., and achieve the effect of reliable quality, convenient operation, and easy demoulding
Active Publication Date: 2016-09-07
江西国龙建筑工程有限公司
View PDF3 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The present invention provides a construction method of mass concrete foundation, which solves the problem of cracking of mass concrete foundation
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] In this embodiment, the large-volume foundation is divided into four pouring areas at equal distances from left to right. Each pouring area is left with a slow pouring area, and the slow pouring area is left on the right side of the pouring area. The length of the slow pouring area is 600-800mm. During the construction, the concrete in the four pouring areas shall be poured separately, and the concrete in each slow pouring area shall be poured after 10 to 12 hours after the concrete pouring in each area is completed. The strength is increased by one strength level, and the concrete in the slow pouring area is mixed with a retarder, and the retarding time of the concrete in the slow pouring area is 4h longer than that of the poured concrete.
[0019] Bury tensile structural steel bars at the junction of the slow pouring area and the non-slow pouring area. The diameter of the tensile structural steel bars is 6-8mm, and the spacing of the tensile structural steel bars is 50...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a construction method of a large-volume concrete foundation. The method is characterized by comprising the following steps: successively dividing the large-volume foundation into four pouring areas at an equal distance from left to right, reserving a to-be-poured area in each pouring area, reserving the to-be-poured areas on the right sides of the pouring areas, pouring concrete in each of the four pouring areas during construction, after finishing pouring concrete in each area for 10-12 hours, pouring concrete in each to-be-poured area, taking expansive concrete as the concrete of the to-be-poured areas, forming concrete holes in the large-volume foundation, mixing coal fly ash into the concrete to reduce consumption of cement, and slag cement with low hydration heat is adopted; mixing a wood calcium water reducing agent into the concrete, after compression and final setting of the concrete by use of a wood float, covering the concrete with a plastic film and a straw mattress in time, and then spraying water for maintenance for not less than 7 days.
Description
technical field [0001] The invention relates to a construction method of a large-volume concrete foundation, which is suitable for the construction field. Background technique [0002] With the continuous emergence of modern high-rise buildings, mass concrete foundations appear from time to time in engineering construction. Due to the large amount of concrete in the mass concrete foundation, temperature stress will be generated during the concrete setting process. If there are no effective technical measures, the mass foundation will crack and other phenomena. It can be seen from the formation process of cracks that the cracking of concrete, especially mass concrete foundation, is mainly the result of the contradiction development between the tensile stress of concrete and the tensile strength of concrete foundation itself. Therefore, in order to control the cracks of the mass concrete foundation, it is necessary to improve the tensile strength performance of the concrete f...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/00
CPCE02D15/02E02D27/00E02D2250/0023
Inventor 朱奎
Owner 江西国龙建筑工程有限公司