Workability of fresh concrete

This research investigates the properties of concrete utilizing coal mine waste rock (CMWR) as a substitute for river sand. The workability of fresh concrete is assessed through slump tests, revealing a decrease in a slump as the percentage of CMWR replacement increases.

13p viwalton 02-07-2024 1 1   Download

Part 1 of ebook "Sustainability improvements in the concrete industry: Use of recycled materials for structural concrete production" provides readers with contents including: Chapter 1 - Introduction; Chapter 2 - Recycled aggregates for concrete production, state-of-the-art; Chapter 3 - Workability and rheology of fresh recycled aggregate concrete;...

88p giangdongdinh 28-05-2024 2 2   Download

This paper presents some analysis results on workability, calculating relative stratification reduction and quality factor of LC when using Air Entrainment Admixture (AD) that most of experimental results presented on the referent.

5p vifalcon 16-05-2023 4 3   Download

Part 1 of ebook "Building materials in civil engineering" provide readers with content about: introduction; the basic properties of building materials; air hardening binding materials; cement; concrete; workability of fresh concrete; building mortar;... Please refer to the part 1 of ebook for details!

215p langmongnhu 14-12-2022 24 4   Download

The objective of this research is to design mixture proportions for high strength concrete with controlled amount of cement and water through the application of densified mixture design algorithm (DMDA) method, which is comparable with conventional method (ACI). Cylindrical concrete specimens in size of 10 × 20 cm were prepared for compressive strength test. The effect of superplasticizer (SP) on workability of fresh concrete is also investigated. Test results indicate that the concrete specimens designed by DMDA method achieve higher compressive strength than that designed by ACI method.

6p trinhthamhodang1218 18-03-2021 29 4   Download

In this paper, quarry stone dust was used as an alternative to natural sand for concrete mix proportion. Moreover, the effect of partial to full replacement of natural river sand with this type of aggregate on the workability, compressive strength and flexural strength of concrete was studied. The results showed that although the use of quarry stone dust caused a reduction in slump value, compressive and flexural strength were comparable to the case of using natural sand.

7p vinobita2711 03-06-2019 29 0   Download