Characterizing the Mechanical Properties of Cementitious Emulsion Grout for Semi-Flexible Mixture

Abstract

Grout is a cement-based material with high strength and workability that allowing it to be injected into small cracks or leaky areas. It is usually used to patch concrete cracks or holes, but it may also be used to fill voids under metal bases or digging anchors. Furthermore, grout is used efficiently in the production process of semi-flexible pavement mixtures. The purpose of this study is to characterize the effect of grout ingredients on their mechanical properties. The grout ingredients were Ordinary Portland Cement (OPC), silica fume (SF), emulsion (Em), super-plasticizer (SP), and water. Different proportions of mentioned materials were used to characterizing the developed grout through flowability, compressive strength, and flexural strength tests. Results showed that the flow time decrease with an increase in the W/B. Also, the compression strength of the grouts comprised OPC+EM reveals an optimal dosage: i.e., 20% EM. Moreover, SF generally leads to increase compressive and flexural strength. As the main conclusion, the mechanical properties of cementitious-emulsion grout are highly affected, but grout ingredient types, dosage, and properties.

Efficient use of ceramic waste powder in Cementitious Grout for the Development of Sustainable Semi-Flexible Pavement Surfaces

“…Increasing SP has a potent plasticizing impact that enhances grout mix flowability. These findings are consistent with previous studies [11,21]. The acceptable flow time requirement for effective grout injection into the SFP mixtures is 11-16 sec., and none of the results from mixes 1-7 satisfy this criterion.…”

“…Superplasticizers based on carboxylic acids or polymers are more effective at countering the fluidity introduced by the sulphonated naphthalene formulation, which depresses the cementitious particle. The amount of water in the grout has a significant impact not only on its fluidity but also on its strength [11] To test the fluidity of the grout, the flow cone method is commonly used; according to this method and previous researchers, the flow time should be between 11 and 16 seconds [12] Due to the high fluidity of the grouting material, flow times greater than 16 seconds may result in more voids in the SFP combination not being filled, whereas flow times less than 11 seconds may result in the impossibility of penetrating the grout material to voids in SFP mixture. In particular, the superplasticizer is one of the material types that is highly successful in enhancing grout fluidity.…”

Characterizing polymer modified cementations grout for semi-flexible pavement mixtures

“…Today's studies are mostly focused on developing grout mixtures that are affordable in cost, possess outstanding fresh-state characteristics, and have high mechanical performance (Bonicelli et al, 2019). Besides boosting fire resistance and security, grout may also be used to improve acoustic Termite resistance, blast resistance, and performance, thermal storage capacity, and anchoring capabilities (Jawad, 2021). Grouts come in a variety of varieties, depending on the application, including auger cast pile grout, masonry grout, and preplaced aggregate (Hlail, 2021).…”