Design of Concrete Mix Proportion Based on Particle Packing Voidage and Test Research on Compressive Strength and Elastic Modulus of Concrete

Abstract

According to the basic principle of dense packing of particles, and considering the interaction between particles, a dense packing model of granular materials in concrete was proposed. During the establishment of this model, binary particle packing tests of crushed stone and sand were carried out. The fitting analysis of the test results determines the relationship between the particle size ratio and the remaining volume fraction of the particle packing, and then the actual void fraction of the particle packing was obtained, based on which the water–binder ratio was combined to determine the amount of various materials in the concrete. The proposed concrete mix design method was used to prepare concrete, and its compressive strength and elastic modulus were tested experimentally. The test results show that the aggregate volume fraction of the prepared concrete increased, and the workability of the concrete mixture with the appropriate amount of water reducing agent meets the design requirements. When the water–binder ratio was 0.42, 0.47, or 0.52, the compressive strength of the concrete increased compared with the control concrete, and the degree of improvement in compressive strength increased with the decrease in water–binder ratio; when the water-binder ratio was 0.42, 0.47, or 0.52, the static elastic modulus of the concrete increased compared with the control concrete, and the degree of improvement in elastic modulus also increased with the decrease in water–binder ratio. The elastic modulus and compressive strength of the prepared concrete have a positive correlation. Findings show that the concrete mix design method proposed by this research is feasible and advanced in a sense.

Synthesis of Electrolytic Manganese Slag–Solid Waste-Based Geopolymers: Compressive Strength and Mn Immobilization

“…The samples were 20 × 20 × 20 cm cubes, and the loading rate was 0.3 MPa/s. A total of 3 specimens were tested in each group and the average value was taken [ 26 ]. Strength was compared with that of standard no-burn bricks [ 27 ].…”

Optimizing the design parameters for chamotte particle‐reinforced geopolymers

“…This phenomenon is well-documented in materials that incorporate tightly packed, rigid particles, effectively occupying pore regions. 48 Consequently, this could be considered an advantageous aspect for designing structures with increased stiffness. However, it is important to note that achieving a sufficiently strong bond between the particles and the matrix is crucial for the realization of these benefits.…”

Densified mixture design algorithm: A novel mix design concept and its application for green concretes incorporating industrial by‐products

“…Similar to DMDA, the major concern of this method is optimizing the granular skeleton of concrete by packing the concrete ingredients of different particle sizes for void minimization purpose. However, this approach is based on quite complicated mathematical models 24–26 . The fundamental of particle packing theories has been previously described by Mangulkar and Jamkar 27 with various particle packing models, including discrete model (e.g., binary, ternary, and multi‐component mixture models) and continuous model.…”

“…However, this approach is based on quite complicated mathematical models. [24][25][26] The fundamental of particle packing theories has been previously described by Mangulkar and Jamkar 27 with various particle packing models, including discrete model (e.g., binary, ternary, and multi-component mixture models) and continuous model. Besides, based on the basic principle of particle packing, different modified models have been proposed and applied in the concrete mix design.…”

“…The authors concluded that the SCC mixture designed by compressive packing model met the requirements in terms of workability, self-compacting ability, and segregation resistance with low binder content (approximately 400 kg/ m 3 ), thus optimizing both the economical and ecological benefits. In the study of Cheng et al, 26 compressive strength and elastic modulus of concrete designed based on the binary particle packing approach were evaluated. The authors have considered the interactions between particles in the packing system.…”