Analysis of the Aggregate Effect on the Compressive Strength of Concrete Using Dune Sand

Applied Sciences

Jeongwon Ko¹  Jaekang Yoo¹  Euibae Lee¹  Jeongsoo Nam²  Sangjun Park³ 

[1] Daewoo Institute of Construction Technology, DAEWOO E&C, Seoul 04548, Korea;Department of Architectural Engineering, Chungnam National University, Daejeon 34134, Korea;Department of Building Construction, Korea Polytechnics, Gumi 39257, Korea;

关键词: dune sand;    crushed sand;    effect factor;    compressive strength;    concrete;   

DOI  :  10.3390/app11041952

来源: DOAJ

【 摘 要 】

In this study, the compressive strengths of concrete were investigated based on water content and aggregate volume fractions, comprising dune sand (DS), crushed sand (CS), and coarse aggregate (CA), for different ages. Experimental data were used to analyze the effects of the volume fraction changes of aggregates on the compressive strength. The compressive strength of concrete increases until the volumetric DS to fine aggregate (FA) ratio (DS/FA ratio) reaches 20%, after which it decreases. The relationship between changes in compressive strength and aggregate volume fractions was analyzed considering the effect factor of each aggregate on the compressive strength and at 2 conditions: (1) 0 < DS < CS < CA and (2) 0 < CA < CS < DS. For condition (1), when the effect factor of CA = 1, those of DS and CS were within 0.04–0.83 and 0.72–0.92, respectively, for all mixtures. For condition (2), when the effect factor of DS = 1, those of CS and CA were within 0.68–0.80 and 0.02–0.79, respectively.

【 授权许可】

Unknown