The cement content of a concrete is 375 kg/m3 and the w/c ratio is 0.46. At a specific moment of the cement hydration, the degree of hydration is 0.80. Calculate the volume (dm/m³) of the following: (i) chemically bound 2 water, (ii) gel water and (iii) capillary water
The cement content of a concrete is 375 kg/m3 and the w/c ratio is 0.46. At a specific moment of the cement hydration, the degree of hydration is 0.80. Calculate the volume (dm/m³) of the following: (i) chemically bound 2 water, (ii) gel water and (iii) capillary water
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![The cement content of a concrete is 375 kg/m3 and the w/c ratio is 0.46. At a specific moment of the cement
hydration, the degree of hydration is 0.80. Calculate the volume (dm/m³) of the following: (i) chemically bound
water, (ii) gel water and (iii) capillary water
A concrete sample was extracted from a structure and dried at 105 °C in which 80 kg/m3 of water evaporated. The
degree of hydration (a) was determined to be 0.5. The mix design of the concrete was 1:6.0:0.6
(Cement:Aggregates:Water mix ratio by weight) and the target air content was 3 %.
a) How much of the water had been evaporated prior to drying at 105°C?
b) What were the volume of (i) un-hydrated cement, (ii) solid part of cement gel, (iii) gel water, (iv)
contraction pores, and (v) capillary pores at the time of sampling?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F668c0dd8-c829-4bb4-b123-8cbc4ec821ce%2Fffb5b2c5-e591-4398-9abf-24bb034feba2%2Fqy0i9vg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The cement content of a concrete is 375 kg/m3 and the w/c ratio is 0.46. At a specific moment of the cement
hydration, the degree of hydration is 0.80. Calculate the volume (dm/m³) of the following: (i) chemically bound
water, (ii) gel water and (iii) capillary water
A concrete sample was extracted from a structure and dried at 105 °C in which 80 kg/m3 of water evaporated. The
degree of hydration (a) was determined to be 0.5. The mix design of the concrete was 1:6.0:0.6
(Cement:Aggregates:Water mix ratio by weight) and the target air content was 3 %.
a) How much of the water had been evaporated prior to drying at 105°C?
b) What were the volume of (i) un-hydrated cement, (ii) solid part of cement gel, (iii) gel water, (iv)
contraction pores, and (v) capillary pores at the time of sampling?
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