Title: High-strength concrete containing high volume of ground bottom ash

Author(s): Weerachart Tanchirapat

Publication: TCA

Volume: Vol. 7 No. 2 (2019): July-December 2019

Issue:

Appears on pages(s): 14-24

Keywords:

DOI:

Date: 12/6/2019

Abstract:
This research studied the use of finer ground ash to replace type 1 cement in the ratio of 35, 50, and 65 percent by weight of binder for the production of high strength concrete. The ashes used in this study were sifted through sieve no. 50, then finely ground until there were no more than 1% sieve remaining particles. Of concrete is equal to 150-200 mm using special water reducing agents. Test the compressive strength of concrete, Modulus of elasticity And the heat generated within the concrete The test results showed that replacing type 1 Portland cement with 35% by base ash by weight of binder The compressive strength of concrete is higher than that of control concrete at the age of 28 days. Moreover, the concrete with base ash in the mixture is 50% by weight of the binder. Can be classified as high strength concrete since the age of 7 days, which has a compressive strength of more than 55 MPa with 28 days of age has a compressive strength of up to 80.9 MPa and found that the elastic modulus of concrete has Higher values ​​when the compressive strength of concrete is higher. In addition, it is found that the use of quality modified bottom ash can reduce heat and help extend the maximum heat generation time in the concrete. From the test results, it can be concluded that the finer ground ash is a good pozzolanic material and can replace 50% of Portland cement by weight of binder. To produce high strength concrete 9 MPa and found that the elastic modulus of concrete is higher when the compressive strength of the concrete is higher. In addition, it is found that the use of quality modified bottom ash can reduce heat and help extend the maximum heat generation time in the concrete. From the test results, it can be concluded that the finer ground ash is a good pozzolanic material and can replace 50% of Portland cement by weight of binder. To produce high strength concrete 9 MPa and found that the elastic modulus of concrete is higher when the compressive strength of the concrete is higher. In addition, it is found that the use of quality modified bottom ash can reduce heat and help extend the maximum heat generation time in the concrete. From the test results, it can be concluded that the finer ground ash is a good pozzolanic material and can replace 50% of Portland cement by weight of binder. To produce high strength concrete