Construction method of huge area unreinforced wear-resistant concrete floor
A construction method and concrete technology, applied in the direction of construction, building structure, construction material processing, etc., can solve the problems affecting the use function of workshop, irregular cracks, delamination, etc., achieve good three-dimensional restraint ability, improve surface strength, Improve the overall effect
Active Publication Date: 2015-11-11
SHANDONG WANXIN CONSTR
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Problems solved by technology
However, since there is no supporting construction technology for large-area concrete floors, serious quality defects such as irregular cracks, sanding, and delamination have occurred, which directly affect the use of the workshop. It has become a national technology that needs to be solved urgently. problem
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[0037] The present invention will be further described below in conjunction with the drawings:
[0038] Such as Figure 1 ~ Figure 3 As shown, the steps of the construction method of the huge area non-reinforced wear-resistant concrete floor of the present invention are as follows:
[0039] 1) Foundation treatment: When the allowable live load standard value of the floor design is 60~120KPa, use the 300~600mm thick 3:7 lime soil to roll the foundation1; when the floor design allowable live load standard value is 125~160KPa, Use 600~900mm graded gravel to roll the foundation 1;
[0040] 2) The concrete is designed according to the following mixing ratio: ①The water-binder ratio of concrete is 0.45~0.5, the initial setting time is 8~12h, and the slump is 120㎜±20㎜; ②Incorporating pumping, water reducing and retarding compound additives ③Add 0.6~0.9kg anti-cracking PP fiber per cubic meter of concrete; ④Select 42.5 grade PO moderate heat cement, concrete cement dosage is 280~320kg / m3; ...
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Abstract
The invention belongs to the technical field of building construction, in particular to a construction method for a huge-area rib-free wear-resisting concrete terrace. The construction method mainly comprises the following steps: 1, treating a foundation; 2, designing terrace concrete according to the following mix proportion; 3, arranging a structure sliding layer; 4, dividing a terrace pouring plate; 5, mounting steel channel templates; 6, pouring concrete and leveling; 7, performing water absorption processing on a concrete surface; 8, dispersing emery; 9, conducting press polish on the surface; 10, pouring other slab concrete in an alternative bay manner; 11, covering and curing; 12, cutting contraction joints; 13, arranging expansion joints; 14, filling the expansion joints; 15 protecting the finished product. The construction method has obvious economic benefits, is high in operability, and meets energy-saving environment-protection and green construction requirements. Moreover, reinforcing bars are saved, the construction is convenient, and the key technical difficult problems that the service functions of the huge-area rib-free concrete terrace are affected by sand loss, shedding, cracks and the like.
Description
Technical field [0001] The invention relates to a construction method of a huge area non-reinforced wear-resistant concrete floor, which belongs to the technical field of building construction. Background technique [0002] In recent years, in order to meet the requirements of industrial production technology, large-scale steel structure workshops have emerged in large numbers, and huge concrete floors of 30,000 square meters and above are everywhere. However, as there is currently no supporting construction technology for a huge area of concrete floor, it has caused serious quality defects such as irregular cracks, sanding, delamination, etc., which directly affects the use of the workshop and has become a national technology that needs to be solved urgently. problem. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a construction method for a huge area of non-reinforced wear-resistant concrete floor that ensures the...
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IPC IPC(8): E04G21/02
Inventor 贾华远贾栋
Owner SHANDONG WANXIN CONSTR