### Abstract

Original language | English |
---|---|

Pages (from-to) | 301-309 |

Number of pages | 9 |

Journal | Materials and Structures |

Volume | 35 |

Issue number | 5 |

DOIs | |

Publication status | Published - 2002 |

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**Comparison of particle packing models for proportioning concrete constituents for minimum voids ratio.** / Jones, M. R.; Zheng, L.; Newlands, M. D.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Comparison of particle packing models for proportioning concrete constituents for minimum voids ratio

AU - Jones, M. R.

AU - Zheng, L.

AU - Newlands, M. D.

N1 - dc.publisher: Springer

PY - 2002

Y1 - 2002

N2 - This paper reports the findings of a study of four particle packing models used to proportion the mix constituents (solid particles) of concrete to produce a minimum voids ratio (or maximum packing density). The models have been compared using laboratory tests and published data. The basic mathematics of the models is discussed, particularly how each model defines the particle size distribution of the solid particles. The models have been applied to both the aggregate (sand and gravel) and the cement phase (PC, PFA, GGBS and limestone fines) and the estimated voids ratio compared with that measured in the laboratory. It was found that the models give broadly the same output and suggest similar combinations of materials to give the minimum voids ratio. Using the materials considered it was found that the largest improvement in voids ratio was achieved with the aggregate phase. The particle sizes of the cements considered here were similar and, as a result, only small improvements in voids ratio could be achieved. It was noted that proportioning concrete mix constituents to minimise voids ratio did tend to produce a harsher mix than normal. However, using the mix suitability factor, proposed by Day (1999), reduced this problem. There are some detail differences between the models suggesting further refinements could be carried out and a modification to one of the models is provided.

AB - This paper reports the findings of a study of four particle packing models used to proportion the mix constituents (solid particles) of concrete to produce a minimum voids ratio (or maximum packing density). The models have been compared using laboratory tests and published data. The basic mathematics of the models is discussed, particularly how each model defines the particle size distribution of the solid particles. The models have been applied to both the aggregate (sand and gravel) and the cement phase (PC, PFA, GGBS and limestone fines) and the estimated voids ratio compared with that measured in the laboratory. It was found that the models give broadly the same output and suggest similar combinations of materials to give the minimum voids ratio. Using the materials considered it was found that the largest improvement in voids ratio was achieved with the aggregate phase. The particle sizes of the cements considered here were similar and, as a result, only small improvements in voids ratio could be achieved. It was noted that proportioning concrete mix constituents to minimise voids ratio did tend to produce a harsher mix than normal. However, using the mix suitability factor, proposed by Day (1999), reduced this problem. There are some detail differences between the models suggesting further refinements could be carried out and a modification to one of the models is provided.

UR - http://www.scopus.com/inward/record.url?scp=0036603335&partnerID=8YFLogxK

U2 - 10.1007/BF02482136

DO - 10.1007/BF02482136

M3 - Article

VL - 35

SP - 301

EP - 309

JO - Materials and Structures

JF - Materials and Structures

SN - 1359-5997

IS - 5

ER -