Workability and strength of coarse high calcium fly ash geopolymer

Chindaprasirt, Prinya; Chareerat, T.; Sirivivatnanon, V.

doi:10.1016/j.cemconcomp.2006.11.002

Cited by 748 publications

(305 citation statements)

References 5 publications

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“…Therefore, the shape of the fly ash, which naturally spherical, need to be maintained. Additionally, the workability of fly ash based geopolymer concrete is more depended on the composition of the alkaline reagents, both hydroxide and silicate solution [45].…”

Section: Fresh State Behaviorsmentioning

confidence: 99%

A review on the effect of fly ash characteristics and their variations on the synthesis of fly ash based geopolymer

Wattimena¹,

Antoni²,

Hardjito³

2017

AIP Conference Proceedings

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Abstract. There are more than four decades since the last 1970s where geopolymers concrete was first introduced and developed to use as a replacement to conventional concrete material which uses cement as a binder. And since the last two decades, geopolymers which utilized fly ash as aluminosilicate source material, i.e. fly ash based geopolymers, have been investigated. Many researchers present how to produce the best fly ash based geopolymer with a various source of constituent material as well as mixing formula to achieve exceptional concrete performance. Although there is a similar trend towards factors affecting the result of fly ash based geopolymer synthesis, there is still remain a wide range in mixture proportion. The considerable variation in fly ash characteristics as source material in the synthesis can very likely be one of the causes of this problem. This paper attempts to identify the effect of source material variation of geopolymer concrete, particularly which use fly ash as source material and focuses on the variation of its characteristics and the effects to properties of concrete. From the reviews it concluded that different sources (and even the same source, but different batch) of fly ash materials will give some different characteristics of the fly ash, where it would affect the synthesis process of the fly ash based geopolymer concretes.

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Section: Fresh State Behaviorsmentioning

confidence: 99%

A review on the effect of fly ash characteristics and their variations on the synthesis of fly ash based geopolymer

Wattimena¹,

Antoni²,

Hardjito³

2017

AIP Conference Proceedings

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“…Coutinho reported that adding rice husk ash to concrete examples reduces capillary water absorption [20]. In addition to confirm this view, Chindaprasirt reported that chloride ion penetration depth can be decreased by RHA incorporation in the samples [21]. The use of locally available RHA, and cement can provide sustainability for the local construction industry [22].…”

Section: Introductionmentioning

confidence: 58%

Experimental Evaluation of Eco-friendly Light Weight Concrete with Optimal Level of Rice Husk Ash Replacement

et al. 2017

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Concrete is a versatile and cost-effective building material whose properties are influenced by age, curing condition, and installation. A number of studies deduced that there should be an association of benefits encouraged the use of partial replacements of cement seems to improve strength and durability properties of concrete. This paper presents a framework for feasibility assessment and determination of optimum percentage of rice husk ash (RHA) replacement. Five mix plans with RHA replacing ratio of 0-20% and constant micro-silica value by 10% were prepared. Tests results indicated that compressive strength increased by 20% with an increase in RHA up to 15%. The similar trend was observed in mix designs made of cement replaced by RHA up to 20% in water absorption coefficient measurement. Higher chloride ion penetration was observed in mix designs containing 25% RHA compared to that of conventional concrete. Mixes developed a slightly higher impact resistance than the control mix.

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“…silicate phase in fly ash is highly activated so curing at elevated temperature between 60 0 C to 90 0 C provides higher early compressive strength [10]- [11]. Concentration of NaOH plays a significant role in the compressive strength of geopolymer concrete, at a concentration of 16 M of NaOH higher compressive strength was observed as compare to 8M and 12 M solution [12].…”

Section: Iosr Journal Of Mechanical and Civil Engineering (Iosr-jmce)mentioning

confidence: 99%

Development of High Strength Fly Ash based Geopolymer Concrete with Alccofine

Jindal¹

2016

IOSR

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Workability and strength of coarse high calcium fly ash geopolymer

Cited by 748 publications

References 5 publications

A review on the effect of fly ash characteristics and their variations on the synthesis of fly ash based geopolymer

A review on the effect of fly ash characteristics and their variations on the synthesis of fly ash based geopolymer

Experimental Evaluation of Eco-friendly Light Weight Concrete with Optimal Level of Rice Husk Ash Replacement

Development of High Strength Fly Ash based Geopolymer Concrete with Alccofine

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