Concrete pumping prediction considering different measurement of Related Information

Concrete pumping prediction considering different

Highlights. The effects of different rheological measurements on predicting the concrete pumping were examined. The plastic viscosity of the lubrication layer plays a governing role in determining the pumping performance. The values of lubrication layer thickness should be altered depending on the rheological properties of lubrication layer.

Manakamana RMC Pvt. Ltd | Home

Skilled labor is required only to pour and compact the concrete. Requires more man-hours to prepare concrete at the project site. Material takeoff: Concrete can be calculated as a single item. Materials must be estimated individually, and their purchase must be planned separately. Space: Requires a suitable access for the concrete mixer truck.

GPH 314 Final Flashcards | Quizlet

Why was the Earth's temperature much different in the early Precambrian period (~4.6 to 2.5 billion years ago) than it is today? -Waste heat emissions from energy use and lots of concrete and asphalt. When considering the potential for improved building energy design codes to reduce energy consumption of buildings and cities, it is

Comparative Study of the Abrasion Resistance

A series of concrete mixes were prepared and tested in the laboratory installations at Purdue University Calumet to determine which mix would show higher resistance to abrasion. Tests were performed during summer and fall of 2007 on 16 mixes with two finishing conditions. This investigation included preliminary testing on three different mixes.

Assessment and prediction of concrete flow and pumping

Estimation of the Pumping Pressure from Concrete Composition Base…

Multiple linear regression, artificial neural network, and

Mar 01, 2017 · Evaluating the in situ concrete compressive strength by means of cores cut from hardened concrete is acknowledged as the most ordinary method, however, it is very difficult to predict the compressive strength of concrete since it is affected by many factors such as different mix designs, methods of mixing, curing conditions, compaction, etc. In this paper, considering the experimental …

Effect of lubrication layer on velocity profile of

Jan 22, 2015 · The rheology of concrete is predominant for the required pressures in a pumping pipe. However, more detailed information is required on the formation and the properties of the lubrication layer near the pipe surface, in order to be able to accurately predict the pressure-discharge relation. By means of experimental research in combination with advanced numerical simulations, the lubrication

What is Viscosity, and Why is Measuring Viscosity Important?

Petroleum: Viscosity measurements project the effectiveness of lubricating oil and determines design elements of pipelines. Concrete: Viscosity determines the self-leveling and pumping behavior of a mix. Cosmetics: Viscosity should be considered when designing the feel and flow of cosmetic products.

Simulation of Motion Behavior of Concrete in Pump Pipe by DEM

May 26, 2021 · The pumping pressure-time curve of concrete pumping speed of 0.71 m/s was similar to that of pumping speed of 0.53 m/s. The average pumping pressure of concrete with pumping speed of 0.71 m/s in horizontal pipe, bend pipe, and vertical pipe …

Ready-mix concrete - Wikipedia

Ready-mix concrete ( RMC) is concrete that is manufactured in a batch plant, according to a set engineered mix design. Ready-mix concrete is normally delivered in two ways. First is the barrel truck or in–transit mixers. This type of truck delivers concrete in a plastic state to the site. Second is the volumetric concrete mixer.

Editorial: Recent Advances in Service Life Prediction of

Jan 15, 2021 · The global issue of premature deterioration in bridges and other structures requires a switch from prescriptive to performance-based durability design of infrastructure, taking into account specific environmental exposure and a combination of actions to which a structure will be exposed during its service life.Although many numerical models for service life prediction have been developed …

Measurement and modeling concrete creep considering

Feb 19, 2019 · Relative humidity plays a critical role in concrete creep. To accurately measure and model creep behavior of concrete considering the relative humidity effect is difficult despite more than 100 years of research of concrete creep. In this study, a test set-up was designed to measure the creep-induced deflection of concrete beams exposed to different …

Quantitative Measurement of Water Absorption of Coarse

Jul 14, 2020 · The high water-absorption of lightweight aggregate causes a high slump loss and poor workability of concrete. A prewetting process is usually recommended to compensate for the workability problem, but its application needs more delicate consideration in field. A method is proposed to measure the additional water absorption of lightweight aggregate, and its application in cement paste and

Compressive strength prediction of Portland cement

Aug 01, 2014 · Application of the proposed model for Portland cement concrete mixes. The proposed model for the estimation of the concrete strength at different ages is applied to the data taken from the literature and given in Table 1 as follows:. Based on the compressive strength at 28 days and employing Eq. the grade constant (B) could be calculated from which using Eq.

CRACK WIDTH CALCULATION METHODS FOR LARGE …

The blocks were made of different concrete mixes and had various reinforcements and concrete cover. Tests on 3 blocks subject to restrained shrinkage RG1 to RG3 (6,00 m 0,50 m 0,80 m), with different reinforcement and concrete cover. Tests on 6 concrete blocks at 1/3 scale under continuous loading (1,90 m 0,25 m 0,44

Parameters influencing pressure during pumping of self

Jul 27, 2012 · The pressure at two different measurement sections in the long pumping circuit increases slightly as concrete is being inserted gradually in the pipes. Around 1,205 s, a transition takes place from hydrodynamic interactions to friction, as insufficient cement paste is available between the aggregates and the concrete blocks at 1,210 s

‪Dimitri Feys‬ - ‪Google Scholar‬

Prediction of pumping pressure by means of new tribometer for highly-workable concrete D Feys, KH Khayat, A Perez-Schell, R Khatib Cement and Concrete Composites 57, 102-115, 2015

Midwest Concrete Pumping, LLC - Moorhead, MN - Business Data

Midwest Concrete Pumping, Llc was founded in 2005, and is located at 1915 27th St S in Moorhead. Additional information is available at .midwestconcretepumping.net or by contacting Chris Brassa at (218) 233-1256.

Investigation of Concrete Base-Roadbed Surface Contact

The excessive pumping of fines in saturated roadbed surface layer, which is induced by the fluid-solid interaction under dynamic loads from high-speed train, is a special form of high-speed railway subgrade defect reported recently. This can deteriorate the interface between nonballasted track structure bottom layer and roadbed surface layer and therefore lead to associated contact variation

Prediction of moisture curling of concrete slab | SpringerLink

Sep 21, 2010 · Moisture curling occurs due to non-uniform moisture distribution in a concrete slab. The curled geometry and self-weight of the slab induce undesirable high stress region near the drying surface, and may cause cracks when external wheel loadings are applied. Therefore, alleviating the degree of curling is an important issue in pavement design, and a proper prediction scheme is essential in