Modified concrete with excellent crack resistance
A concrete modification technology, applied in the field of concrete, can solve the problems of low impact resistance and crack resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0017] A kind of modified concrete with excellent crack-resistance performance proposed by the present invention, its raw materials include by weight: 100 parts of 52.5 grade ordinary Portland cement, 14 parts of mineral powder, 20 parts of fly ash, 10 parts of gravel powder, 100 parts of river sand, 55 parts of stone, 6 parts of bentonite, 7.5 parts of modified polypropylene fiber, 5 parts of polyolefin fiber, 3 parts of steel fiber, 2.5 parts of nitrile rubber powder, 2.5 parts of epoxy resin emulsion, hydroxypropyl 2 parts of cellulose ether, 3 parts of amino superplasticizer ZM-2, 27.5 parts of water.
[0018] Among them, the polyolefin fiber is wavy, with a diameter of 0.77mm, a length of 50mm, an aspect ratio of 65, and a tensile strength of 600N / mm 2 . The diameter of the steel fiber is 0.9mm, the length is 60mm, the aspect ratio is 67, and the tensile strength is 1100N / mm 2 . The fineness modulus of river sand is 3.1.
[0019] Modified polypropylene fiber is prepar...
Embodiment 2
[0021] A kind of modified concrete with excellent crack resistance performance proposed by the present invention, its raw materials include by weight: 100 parts of 52.5 grade ordinary Portland cement, 12 parts of mineral powder, 25 parts of fly ash, 5 parts of gravel powder, 120 parts of river sand, 45 parts of stone, 9 parts of bentonite, 6 parts of modified polypropylene fiber, 6 parts of polyolefin fiber, 2 parts of steel fiber, 3 parts of nitrile rubber powder, 2 parts of epoxy resin emulsion, hydroxypropyl 3 parts of cellulose ether, 2 parts of amino superplasticizer ZM-2, 30 parts of water.
[0022] Among them, the polyolefin fiber is wavy, with a diameter of 0.77mm, a length of 50mm, an aspect ratio of 65, and a tensile strength of 620N / mm 2 . The diameter of the steel fiber is 0.9mm, the length is 60mm, the aspect ratio is 67, and the tensile strength is 1150N / mm 2 . The fineness modulus of river sand is 2.8.
[0023] The modified polypropylene fiber is prepared ac...
Embodiment 3
[0025] A kind of modified concrete with excellent crack-resistance performance proposed by the present invention, its raw materials include by weight: 100 parts of 52.5 grade ordinary Portland cement, 16 parts of mineral powder, 15 parts of fly ash, 15 parts of gravel powder, 80 parts of river sand, 65 parts of stone, 3 parts of bentonite, 9 parts of modified polypropylene fiber, 4 parts of polyolefin fiber, 4 parts of steel fiber, 2 parts of nitrile rubber powder, 3 parts of epoxy resin emulsion, hydroxypropyl 1 part of cellulose ether, 4 parts of amino superplasticizer ZM-2, 25 parts of water.
[0026] Among them, the polyolefin fiber is wavy, with a diameter of 0.77mm, a length of 50mm, an aspect ratio of 65, and a tensile strength of 630N / mm 2 . The diameter of the steel fiber is 0.9mm, the length is 60mm, the aspect ratio is 67, and the tensile strength is 1130N / mm 2 . The fineness modulus of river sand is 3.2.
[0027] The modified polypropylene fiber is prepared acc...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More