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The Research of the Engineering Mix Proportion of FB Concrete Applied in Road Cement Concrete

Author: LiangDongSheng
Tutor: LiuKaiPing
School: Chang'an University
Course: Materials Science
Keywords: Brucite fiber Cement Concrete Pavement Engineering Mix design
CLC: U414
Type: Master's thesis
Year: 2009
Downloads: 85
Quote: 1
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Abstract


China bitumen resource-poor countries . Cement inexpensive and abundant resources , the cement concrete pavement has good prospects for development . However , the disadvantage of concrete result in the application can not be good in the Highway brittleness of cement concrete is one of the important shortcomings that affect its development . Mixed with a certain proportion of the fibers in the concrete , fiber reinforced concrete, is one of the important means to improve the brittleness of concrete . In this paper, brucite fibers mixed with cement concrete as a new type of concrete pavement materials , design suitable brucite fiber cement concrete pavement with the ratio used in pavement engineering . This paper systematically the brucite fiber cement concrete materials performance and impact factors by comparing test brucite fiber types , the incorporation of the amount , superplasticizer , sand ratio , water-cement ratio and strength of cement concrete influence of screening the scope of application of the various parameters . In this paper, based on laboratory studies , according to the cement concrete pavement materials with design specifications to determine the technical parameters of the test with flexural strength , water-cement ratio , sand ratio , the unit water and gravel dosage , and the site Laboratory test with , determine the project mixing ratio . Finally, according to the on-site raw performance , works with the ratio converter , and in accordance with the Technical Specifications for Construction of the test road laying . The research results show that using HQ-UNF naphthalene superplasticizer ( dry process ) and TC-AN-D amino of superplasticizer ( wet process) brucite fiber cement concrete concrete materials and flexural strength , water-cement ratio between 0.34 to 0.41 , the percentage of sand in between 0.35 to 0.38 can better meet the design and construction specifications requirements . The project finalized with the ratio cement : water : sand : gravel : brucite fiber : additive = 1:0.389:1.344:2.495:0.043:0.01 . Steel fiber reinforced concrete pavement material adjacent tenders , the tenders brucite fiber cement concrete pavement with less than the amount of cement performance than steel fiber reinforced concrete , and the cost is reduced by approximately 56% , with good economy and prospects.

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CLC: > Transportation > Road transport > Road works > Road construction materials
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