Test method for evaluating freezing and thawing resistance of cement-based waterproof bonding layer
A technology of waterproof adhesive layer and test method, which is applied in the direction of testing material strength by applying stable shear force, testing material strength and strength characteristics by applying stable tension/pressure, and achieving obvious economic and social benefits
Inactive Publication Date: 2017-10-17
BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE +1
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The invention relates to a test method for evaluating the freezing and thawing resistance of a cement-based waterproof bonding layer. The method includes the steps of firstly, wetting a cement concrete block with an acrylic emulsion; secondly, smearing a cement-based material; thirdly, placing the cement concrete block smeared with the cement-based material under normal temperature; fourthly, laying an asphalt mixed material when the cement-based material is in an initial set state; fifthly, maintaining the cement concrete composite test piece with the asphalt mixed material under normal temperature; sixthly, cutting the maintained cement concrete composite test piece into a shear test piece and a drawing test piece; seventhly, performing freezing and thawing on each of the shear test piece and the drawing test piece in a rubber test box; eighthly, maintaining the test pieces in water; ninthly, sequentially measuring the shear strength and drawing strength of the test pieces after difference times of freezing and thawing cycles; tenthly, determining a method most suitable for evaluating the freezing and thawing resistance of a cement-based waterproof bonding layer material. The method can guide the specific application of the cement-based waterproof bonding layer material in cement concrete decks, and an applicable test method capable of sufficiently evaluating the freezing and thawing resistance of the cement-based waterproof bonding layer material is provided.
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