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Portland Cement Concretes
Published in M. Rashad Islam, Civil Engineering Materials, 2020
Flowable fill, or simply flow fill, is a mixture of cement, water, fine aggregate, fly ash, and/or slag. Due to the nature of the product, many materials that do not meet the quality standards for use in concrete have been used successfully in the flow fill mixtures. Chemical admixtures specifically developed for use in flow fill mixtures have also become more commonly used as a result of their unique benefits on the performance properties of the mixture. A common application of flow fill is around the pipelines under roadways. The mix flows all around the pipelines and provides rigid protection from the traffic impact to the pipelines, as shown in Figure 5.16. On top of the flow fill, conventional pavement materials (soil, aggregate base, and asphalt layer) are placed and compacted.
Effect of subbase quality on performance of rapid-setting replacement slabs for airfield pavements
Published in Andreas Loizos, Imad L. Al-Qadi, A. (Tom) Scarpas, Bearing Capacity of Roads, Railways and Airfields, 2017
J.S. Tingle, H.P. Bell, L.P. Priddy, L. Edwards
A commercially available proprietary rapid-setting flowable fill was used for this study. The material that consisted of a dry blend of rapid-setting cement and fine aggregates stored in large 3,000-lb super sacks fashioned from woven geotextile fabric and lined with plastic. The pre-blended material requires only the addition of water to conduct repair activities. This flowable fill provides an Unconfined Compressive Strength (UCS) of 250 psi after 30 min of cure time and 750 psi after 3 hr of cure time. Posttrafficking investigations typically reveal a CBR of approximately 100 percent after 24 hr of cure time.
Comprehensive review on utilization of waste foundry sand in concrete
Published in European Journal of Environmental and Civil Engineering, 2023
Atish Bhardwaj, Pankaj Kumar, Salman Siddique, Abhilash Shukla
Flowable fill: Flowable fill seems like a replacement of traditional soil backfill. The flowable fill is a fluid-kind of substance which compacts without any external action. The flowable fill is utilized in the field of road construction, reinforcement and soil stabilization (Vipulanandan et al., 2000). Cement and concrete require certain minerals like aluminum oxide and iron, which can be found in many waste foundry sands (Bhimani et al., 2012).