Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Effect of concrete placing temperature on early thermal movement
Rate of hydration of cement paste is related to placing temperature of concrete. Rate of heat production is given by empirical Rastrup function:
H=H0×2r (T-T1)
Ho = Rate of heat production at a reference temperature
T = Temperature where rate of heat production H
T1 = Temperature where rate of heat production Ho
r = 0.084
A 12o C increase in placing temperature doubles the rate of reaction of hydration. Henceforth concrete placed at a higher temperature experiences a higher rise in temperature. For example concrete placed at 32oC generates heat of hydration twice as fast when compared with concrete placing at 20oC. Therefore high concrete placing temperature has significant effect to problem of early thermal movement.
The loading period for a building extended from Feb., 1957 to Feb., 1959. In Feb., 1962, the average measured settlement was found to be 117 mm. The ultimate settlement was expecte
difference between moment and bending moment
what is the type of slope protection that use rocks and put cements between those rocks??the concept is same as brick layer
State about the pre-tensioned concrete beam A pre-tensioned concrete beam, 200 mm wide and 300 mm deep, is prestressed by straight wires carrying an initial force of 150 kN at
Reasons of ground heaving during pipe-jacking It is commonly recognized that ground settlement is one of the significant concern in pipe jacking operation. Though engineer mus
Explain the Analysis of Singly Reinforced Rectangular Beams: 1. Determine the area of steel reinforcement, As. Multiply the number of bars by the area of each bar. 2. Calcul
Distance ABC was measured with a 30m. Chain tested and found to be correct in the beginning of the work .after measuring AB=1.2 km chain was found to be 10 cm. To long chaining was
Cross-sectional Elements: The terms used in the cross-section of a road are : Carriageway The portion where traffic moves. Shoulder The portion outside the ca
We need eng. calcs for a deck 17''x 10 feet.attach to the guest house. calculations will be for 230 psi snow load . in the city of Mammoth lakes Ca. deck is supported for 3 girder
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd