Prediction of Aggregate Impact Values and Aggregate Crushing Values Using Light Compaction Test

Abstract

Crushing test and Impact test are very important to estimate strength and toughness characteristics of the road aggregate. Extensive experimental procedures and different sets of equipment are required for these types of aggregate testing. Therefore, the objective of the study is to investigate whether the light compaction test can be a suitable alternative for both these tests. For this experimental procedure, 60 aggregate samples were collected from different rock quarries spread along North-eastern states of India. The specifications of the aggregate samples are kept similar for all of these three test procedures. The result indicates a strong correlation of Light compaction values (LCV) with Aggregate crushing values (ACV) and Aggregate Impact Values (AIV). The R2 values for the relationship was found to be more than 0.9 for both these relationships. It indicates that the LCV can be used to closely predict the ACV and AIV. The root mean square error (RMSE) values estimated based on the actual and predicted values were also found to be low which further concrete the claim that light compaction test can be a suitable alternative for crushing test and impact test of the aggregates.

Contribution of Surface Treatment on Physical and Mechanical Properties of Recycled Concrete Aggregates

“…For the aggregate samples tested for impact resistance (Figure 8(a)), the results show that the impact was 8% for NCA, clearly lower than the untreated RCA, 27.4%. As expected, the natural aggregate falls under the category of exceptionally strong aggregates, as stated in IS 2386 (Part IV) cited by Das et al [51]. RCA is known to be retrieved from used concrete, and the mechanical production process initiates tiny weaknesses within the ITZ zone.…”

“…Among the treatment concentration of the cement slurry, the results of the treated aggregates did not show significant change from the 95% confidence level, especially for impact values. However, for aggregates crushing value, samples treated with 20% and 40% concentration comparatively resulted in a significant reduction in the crushing value of 24.7% and 23.7% (see Figure 8), categorized as satisfactory [51].…”

Investigation of concrete properties using recycled waste concrete aggregate

“…In addition to value of crushing, the aggregate magnitude impact must not go above 45% by wt. for aggregates utilized for concrete other than for wearing surfaces and 30 percent by weight for concrete other than for surfaces wearing I.e., roads, runways, and pavements [15]. Also, SG, a specified low gravity designates porosity as high, resulting in poor strength and durability.…”

A Simplified Numerical Approach to Predict Bearing Capacity of Soil for Shallow Foundation

“…(Cherubini 2000) have proposed a possible application of probabilistic methods to study shallow foundations reliability concerning their bearing capacity. (Kawa and Puła 2019, Das et al, 2021;Hinge et al, 2021)) has examined a three-dimensional model analysis of load bearing capacity of square and strip footing considering a rigid type of foundation with smooth surface and it has been found that three-dimensional model analyses is suitable for strip footing problem. The effect of interaction between closely spaced square footings resting on granular soil on their bearing capacity has also been studied by Fuentes et al using threedimensional boundary value problems constructed with the software Abaqus standard (Fuentes et al 2019).…”