Effect of Fly Ash Content on Mechanical Properties of Cement-Fly Ash Stabilized Crushed Stones

Abstract

To improve the impact of fly ash on the properties of cement-fly ash stabilized crushed stone, and promote it popularize and apply better. This paper investigated the effect of fly ash content on unconfined compressive strength, cleavage strength and resilient modulus of cement-fly ash stabilized crushed stones, and those relationships between mechanical parameters. The results showed that with increasing of the fly ash content, the unconfined compressive strength and cleavage strength increased at first, then decreased, the resilient modulus decreased, and The brittleness index increased. We can conclude that the optimal fly ash content is between 10% and 15%, and increment of fly ash content can improve its crack-resistance.

Synthesis of Fly Ash-Based Zeolite and its Research Progress in Wastewater Treatment

“…In 2009, Zhai et al found that the specific surface area of fly ash could increases obviously under the action of mechanical force, and the Si-O and Al-O bonds are destroyed during grinding, which leads to the enhancement of the surface activity of the glass phase of fly ash [15] . Chen et al found mechanical grinding can transform the physical and chemical properties of fly ash, such as morphology and crystal structure, and inducing fly ash to react with other substances [16] . Liu et al analyzed the relationship between the activity of fly ash and the mechanical grinding time, summarized the activation mechanism of mechanical grinding fly ash.…”

Integrating Fly Ash-Controlled Surface Morphology and Candle Grease Coating: Access to Highly Hydrophobic Poly (L-lactic Acid) Composite for Anti-Icing Application

“…Fly ash (FA) mainly comes from the flue gas emitted by burning coal during the process of thermal power generation [ 30 ], metal smelting [ 31 ], heating for warmth, and so forth. FA usually exhibited a smooth surface like glass [ 32 ], with an average particle size of less than 20 microns [ 33 ], and contains a variety of active components such as unburned carbon and metal oxides (SiO 2 , Al 2 O 3 , and Fe 2 O 3 [ 34 , 35 ]). According to previous researches and reports, FA had been effectively and deeply applied in the fields of building materials [ 36 ], metallurgy [ 37 ], agriculture [ 38 ], and chemical industry [ 39 ] at home and abroad.…”