88 CHAPTER 5 APPLICATION OF CRUMB RUBBER CONCRETE 5.1 GENERAL The study on the strength of foamed concrete with crumb rubber partially replaced with flyash is delinated in this chapter. The properties such as compression, split tension and flexure are studied. In addition to the foamed concrete with the crumb rubber the another application of crumb rubber in paver block is also studied to take care low volume traffic as per IRC: SP: 63- 2004[ 117] 5.2 COMPRESSIVE STRENGTH OF FOAMED CONCRETE The test on foamed concrete with the crumb rubber cube is carried out similar to the test on concrete cube. The test results of compression of foamed concrete with crumb rubber is provided in Table 5.1 The test results show that the strength decreased from 12.4 MPa to 8.9 MPa when there is a addition of crumb rubber by replacing flyash at the end of 28 days. Similar results were also obtained for 7 and 14 days test results. The density of concrete is increased by the addition of crumb rubber in foamed concrete and it varied between 760 - 898 kg/m 3 . The compressive strength reduction is due to poor bonding between crumb rubber and cementitious content and due to the percentage increase in air content in concrete due to the increase in the rubber content and also due to the flexible porous on the crumb rubber content. The casting of foamed concrete with and with our crumb rubber in cubical specimens is shown in Figure 5.1.
APPLICATION OF CRUMB RUBBER CONCRETE
Jun 20, 2023
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