The relation between strength and maturity for a concrete is known to be as follows: in SI units: f -33 + 21 logi, M in US units: , = -5570 + 3047 log, M Calculate the strength when the concrete is cured at 30 °C (86 °F) for 7 days. What temperature would be required to reach a strength of 30 MPa (4400 psi) at 28 days?

The relation between strength and maturity for a concrete is known to be as follows: in SI units: f -33 + 21 logi, M in US units: , = -5570 + 3047 log, M Calculate the strength when the concrete is cured at 30 °C (86 °F) for 7 days. What temperature would be required to reach a strength of 30 MPa (4400 psi) at 28 days?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

What is the w/cm for the following 1 m3 batch of concrete? Express your answer with 2 decimal places. Material Batch mass, kg Cement 250 Pozzolan 84 Fine aggregate (absorption 0.8%. moisture content, 4%) Coarse aggregate (absorption 0.4%. moisture content 1.5%) Water added to the batch mix 623 1177 116
Concrete Technology// Practical parts: Please , keep the answers to the questions as short and meaningful as possible , thank you very much.
Determine the x-bar centroid of the composite figure shown. Where: x=5 ftShow your solution and round off if possible
A cylindrical concrete specimen was tested for compressive strength. The stress at failure was 22.64 MPa when the applied force was 400,000N. What is the diameter of the specimen in mm? Round off your answer to the nearest whole number.
Question 2 The determination of the proportions of various sized aggregates in the aggregate mass is called as ..
The requirements and material properties of an air entrained concrete mix are given below. Calculate the weights of the components of 1 m3 of concrete. Water content: 200 kg/m3 Air content: 7.5% W/C: 0.45 (By Weight). Dry aggregate volume in 1 m3 concrete mixture: 0.44 m3 Specific Gravity (g/em3 ) water absorption capacity (%) Total Moisture (%) Cement 3.15 Fine aggregate (saturated surface dry) 2.65 1.3 5.5 Coarse aggregate (saturated surface dry) 2.7 0.5 1.5 Dry unit weight of coarse aggregate is 1,500 kg / m3. 'kind
Discuss and conclude Surface Hardness Test On Concrete
a) How various properties of aggregates affect workability of concrete? b) If the peak load of concrete cylinder in compression is 70,000 pounds, find the crushing strength of concrete? (Hint: concrete cylinder dia is 6in). SIR, PLS GIVE ME PROPER AND CORRECT ANSWER WITH FULL DETAILS. SUBJECT: CONCRETE TECHNOLOGY
Concrete basics.