Concrete floor structure layer capable of effectively reducing retractable crack rate
A technology for concrete and structural layers, which is applied to the coagulation pavement, roads, roads and other directions of on-site paving, can solve the problems of uneven settlement of foundation or cushion, high construction technology requirements, insufficient bearing capacity, etc., to reduce settlement. The amount of friction, ease of construction, and the effect of improving ductility
Inactive Publication Date: 2019-04-23
廖志琳
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Problems solved by technology
Concrete floors, which are currently widely used, are prone to ground cracking, heaving, and subsidence due to insufficient bearing capacity of the foundation or floor concrete slab, uneven settlement of the foundation or cushion, material shrinkage caused by temperature di
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[0014] Example
[0015] 1. A concrete floor structure layer that can effectively reduce the rate of expansion cracks. From top to bottom, it includes (1) 60mm thick C15 plain concrete surface layer compaction and tamping, (2) 60mm thick graded gravel layer, ( 3) 40mm thick medium sand layer, (4) 150mm thick Panax notoginseng lime soil base.
[0016] 2. The (1), (2), (3), (4) structural layers are bonded together by (5) 20mm thick polyurethane petroleum asphalt material.
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Abstract
The invention belongs to the field of building materials and provides a concrete floor structure layer capable of effectively reducing the retractable crack rate. The concrete floor structure layer comprises (1) a C15 concrete surface layer which has the thickness of 60mm and is compacted and flatly tamped, (2) a graded crushed stone layer with the thickness of 60mm, (3) a medium sand layer with the thickness of 40mm and (4) a 37 lime soil base layer with the thickness of 150mm, wherein the (1), (2), (3) and (4) structure layers are stuck together through a (5) polyurethane petroleum asphalt material with the thickness of 20mm. A rigid material and a flexible material work cooperatively to reduce the sedimentation friction amount and the advantages of the materials are expressed; the concrete floor structure layer is convenient to construct.
Description
technical field [0001] The invention belongs to the field of building materials and proposes a concrete floor structure layer that can effectively reduce the rate of expansion and contraction cracks. Background technique [0002] The structural design of the floor structure will affect the working performance of the floor. Concrete floors, which are currently widely used, are prone to cracking, heaving, and subsidence due to insufficient bearing capacity of the foundation or floor concrete slab, uneven settlement of the foundation or cushion, material shrinkage caused by temperature differences, and construction defects. Paying attention to layered laying and compacting of materials during construction can reduce the cracking phenomenon of concrete floor structure to a certain extent, but the measures are cumbersome and require high construction technology. If the ratio and combination of materials are reasonable, the method is simple and can achieve a good effect of reduci...
Claims
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IPC IPC(8): E01C7/14
CPCE01C7/14
Inventor 廖志琳
Owner 廖志琳
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