CALL US

+86 17838360708

Rapid evaporation from freshly cast concrete and the Gulf

Rapid evaporation from freshly cast concrete and the Gulf

Rapid evaporation from freshly cast concrete and the Gulf ...

Feb 01, 2001  1.. IntroductionThe rapid evaporation of surface water from concrete placed in dry environments leads not only to a decreased degree of hydration in the surface or

get price

Rapid evaporation from freshly cast concrete and the Gulf ...

Rapid evaporation from freshly cast concrete and the Gulf environment ... In hot dry climates, such as exist in the Arabian Gulf region, plastic shrinkage cracking

get price

Rapid evaporation from freshly cast concrete and the Gulf ...

Download Citation Rapid evaporation from freshly cast concrete and the Gulf environment In hot dry climates, such as exist in the Arabian Gulf region, plastic

get price

Construction and Building Materials Vol 15, Issue 1 ...

select article Rapid evaporation from freshly cast concrete and the Gulf environment

get price

DeepDyve - Unlimited Access to Peer-Reviewed Journals

DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

get price

Water evaporation from freshly placed concrete surfaces in ...

May 01, 1989  This paper deals with a field study on evaporation of water from freshly placed surfaces in the hot climate of Jeddah, Saudi Arabia, by using the concrete produced

get price

Water evaporation from freshly placed concrete surfaces in ...

This study indicates that besides weather components, the time of casting, difference of concrete and air temperatures and moisture condition of the concrete surface

get price

DeepDyve - Unlimited Access to Peer-Reviewed Journals

DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

get price

Water evaporation from freshly placed concrete surfaces in ...

May 01, 1989  This paper deals with a field study on evaporation of water from freshly placed surfaces in the hot climate of Jeddah, Saudi Arabia, by using the concrete produced for a large construction Vol. 19, No. 3 467 EVAPORATION, FRESH CONCRETE, HOT WEATHER TABLE 1 Concrete Mix Details Cement (Type V) Water-cement ratio Fine aggregate 4-8 mm aggregate ...

get price

Top 5 Fiber-Reinforced Concrete FAQs - Euclid Chemical

Eucobar is designed to be used as an evaporation retardant and finishing aid on concrete surfaces of all types. When sprayed over fresh concrete or repair mortars, Eucobar forms a monomolecular film that prevents rapid moisture loss from the concrete surface. It is easy to use, requiring only the addition of water before spray application.

get price

Study on evaporation rate of concrete surface during ...

Evaporation rate from the surface of freshly cast concrete in plastic stage under high temperature and low humidity environment was studied with research variables including wind speed and water ...

get price

LOSS OF MOISTURE FROM CONCRETE – MODEL vs. REALITY

Al-Fadhala, M., Hover, M. (2001) – Rapid evaporation from freshly cast concrete and the Gulf environment. Construction and Building Materials. Almusallam, A.A.(2001) – Effect of Environmental Conditions on the Properties of Fresh and Hardened Concrete, Cement Concrete Composites, 23, USA, pp: 353-361.

get price

Characterization of the Physical and Mechanical Properties ...

[8] M. Al-Fadhala y K. C. Hover, Rapid evaporation from freshly cast concrete and the Gulf environment, Construction and Building Materials, 15 (2001) 1-7. DOI: 10.1016/s0950-0618(00)00064-7

get price

6 Causes of Cracks in Concrete Slab Floors URETEK Gulf Coast

Nov 05, 2019  The rapid evaporation of extra water from the concrete mix will shrink the drying solution leading to the formation of fissures or cracks in concrete floors. Uneven Sub-grade. Before laying a concrete foundation, the soil surface or sub-grade is primed. It is vital that an even surface is achieved before pouring a foundation slab.

get price

Drying induced moisture losses from mortar to the ...

May 04, 2007  Al-Fadhala M, Hover K (2001) Rapid evaporation from freshly cast concrete and the Gulf environment. Construct Build Mater 15:1–7. Article Google Scholar 14. ACI (2001) Guide to curing concrete. ACI Committee Reports, A. C. Institute, ed. Download references

get price

Hot Weather Concreting - Effect of Hot Weather on Concrete ...

Use evaporation retardants, fogging or misting with water, or cover with a vapor-proof sheet after screeding. This will help prevent rapid drying, crusting, plastic shrinkage and rubber sets. Temporary covers, like continuously moistened burlap, may be placed over the fresh concrete and removed in small sections immediately ahead of the finishers.

get price

NUMERICAL MODELING OF CEMENT CONCRETE

Relevant numerical simulation and characteristic analysis were conducted based on Fick#x02019;s second law of moisture transport, using the finite difference method, and considering the effects of slab temperature, water absorption base capacity and supply, and concrete self-desiccation on slab moisture. Then the numerical simulation program was verified by comparison with laboratory tests ...

get price

Pouring Concrete in Hot Weather - What Temperature is Too ...

Evaporation. Another potential problem in hot weather is surface drying—although this one comes with a caveat. If the concrete is warm and the sun is shining and there is a hot dry wind across the concrete, yes, you are likely to get more drying and surface shrinkage. But let's go back to something every concrete contractor should know about ...

get price

BIBLIOGRAPHIE

[Al Fadhala Hover 2000] AL FADHALA M., HOVER K.C.: « Rapid evaporation from freshly cast concrete and the Gulf environment. », Construction and building materials 15(2001) pp1-7 [ASTM C232 1987] American Society for Testing and Materials: « Standard Test Methods for Bleeding of Concrete. », ASTM C 232 - 87 pp144-147 [Ash 1972] ASH J.E.

get price

What is Crazing in Concrete? Causes and Prevention of ...

When the evaporation rate from the concrete surface is higher than the moisture gain from curing, the crazing cracks occurs in concrete. This occurs due to direct sunlight, low humidity, or drying winds. Intermittent wet curing and drying - intermittent curing allows the concrete surface to dry for sometime and this leads to concrete crazing.

get price

One Thing: Sampling Fresh Concrete - National Precast ...

Mar 14, 2019  Take care to protect the sample from the elements like sun, wind, rain, snow, temperature fluctuations, sources of rapid evaporation or unintended added moisture and sources of contamination. Collecting the sample, conducting the fresh concrete tests and fabricating the compressive strength specimens are time-sensitive procedures.

get price

Top 5 Fiber-Reinforced Concrete FAQs - Euclid Chemical

Eucobar is designed to be used as an evaporation retardant and finishing aid on concrete surfaces of all types. When sprayed over fresh concrete or repair mortars, Eucobar forms a monomolecular film that prevents rapid moisture loss from the concrete surface. It is easy to use, requiring only the addition of water before spray application.

get price

Hot-Weather Concreting, Chapter 13 - Cemstone

cracks to form both before and after hardening. Rapid evaporation of water from freshly placed concrete can cause plastic-shrinkage cracks before the surface has hard-ened (discussed in more detail later in this chapter). Cracks may also develop in the hardened concrete because of increased drying shrinkage due to higher water

get price

High and Ultra-high Performance Concretes: A Solution to ...

Gulf Region lies in an arid and subtropical climate with a total precipitation of 5 cm/year while the evaporation is 124 cm/year (Bazaraa, 1989). The temperature reaches 50 °C frequently in summer while the relative humidity (RH) ranges between 60% to 100%. In comparison with other seas, the Gulf water shows higher salinity with an average of

get price

MasterKure ER 50 Master Builders Solutions

MasterKure ER 50 reduces surface moisture evaporation from freshly placed concrete, especially in rapid-drying conditions, such as high concrete surface or ambient temperatures, low humidity, high winds, direct sunlight, or work in heated interiors during cold weather. Recommended uses: Concrete surfaces where the evaporation rate exceeds the ...

get price

Hot Weather Concreting - National Precast Concrete Association

May 22, 2010  Increased rate of cement hydration at elevated temperatures and the increased evaporation rate of moisture from the freshly mixed concrete are the causes of most of the problems associated with hot-weather concreting. The ability of a mix to reach its design strength is determined by the efficiency of the chemical reaction that takes place ...

get price

Hot Weather Concrete Construction

Protect the concrete surface during placement with plastic sheeting or evaporation retarders to maintain the initial moisture in the concrete mixture. Provide sufficient labor to minimize the time required to place and finish the concrete, as hot weather conditions substantially shorted the times to initial and final set.

get price

Drying induced moisture losses from mortar to the ...

May 04, 2007  Al-Fadhala M, Hover K (2001) Rapid evaporation from freshly cast concrete and the Gulf environment. Constr Building Mat 15:1–7. Article Google Scholar 5. Schindler A, Ruiz J, Rasmussen R, Chang G, Wathne L (2003) Concrete pavement temperature prediction and case studies with the FHWA HIPERPAV models.

get price

Concrete Testing Procedures - Tests for Slump More ...

Air-entrained concrete is typically specified in areas of the country where frost-related damage can occur. The measurement of air content in fresh concrete of normal density is typically performed using the pressure method ().Another useful test is ASTM C 173.However, the pressure method is frequently preferred because it is relatively fast.

get price

How to Solve Common Concrete Problems in Construction

Nov 20, 2019  How to avoid crazed concrete: Cure the concrete in a timely manner. Use a moderate slump concrete without bleeding and segregation. Do not finish concrete until all water has evaporated. Do not dust dry cement on the surface while water is present. Do not sprinkle water over the concrete

get price

What is fresh concrete? - Quora

Fresh Concrete - Fresh concrete is that stage of concrete in which concrete can be moulded and it is in plastic state. Sometimes it is also known as green concrete. The potential strength and durability of concrete of a given mix proportion is ver...

get price

Effect of Chemical Admixtures on Rheology of Cement Paste ...

strongly related to the time of day at which concrete is being cast. For instance, the rate of evaporation in concrete cast during mornings was found to be much lower than that in concrete cast at ...

get price

Burj Khalifa – a new high for high-performance concrete ...

May 25, 2017  The world's tallest structure – the 828 m high Burj Khalifa building in Dubai – has set a new benchmark for engineering super-tall buildings. In particular, it significantly raised the bar for high-performance-concrete construction, with its massive reinforced-concrete core and wings extending nearly 600 m above ground level. This paper describes the how the extreme concreting challenges ...

get price

Concrete’s Enemy: Water Modern Contractor Solutions

Concrete’s Enemy: Water. Concrete has been used as a strong, durable building material for thousands of years, dating back to many ancient concrete structures that are still standing to this day. Yet, it has one fundamental enemy it can’t escape—water. As an uptick in humidity and rainstorms wash across many regions of the country ...

get price

Mohammad Shekarchi Zadeh - Director of Construction ...

Sep 23, 2015  The Persian Gulf is one of the most aggressive exposure conditions for the durability of reinforced concrete structures in the world. In this region, chloride diffusion and chloride induced reinforcement corrosion usually leads to a reduced service life of concrete structures, which consequently affects the overall economy of the Persian Gulf ...

get price