2023年4月24日 Saric-Coric et al. studied grouts (w/c = 0.4) containing cellulose-based VMA and two types of HRWR (PNS and PMS). The results indicated that grouts
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2021年12月1日 When the water/cement ratio was high, between 0.57 and 0.60, the cement grout made with fine-grained sand (Sand # 2) had the highest compressive strength at 28
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2023年4月10日 The test results showed that, in the range of the compressive strength from 65 MPa to 110 MPa, the cubic compressive strength of grout had the phenomena of size
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2023年4月14日 The present paper presents an approach for prediction of the uniaxial compressive strength (UCS) of jet grouting columns based on the analysis of several
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2020年3月6日 (3) The calculation model of compressive strength and grouting pressure of grout hardened cement paste is established, and the compressive strength of grout
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... strength test of the grout. The compressive strength of the grout was tested by using cube samples of size 100 6 100 6 100 mm, and the result was 19?5 MPa after 7 days, see
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... compressive strength of the samples injected with modi®ed grout increased over time, and the highest compressive strength was obtained at 28 days in all samples, as can be
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An experimental program was devised to assess the influence of the compressive strength of the grout on the compressive strength of masonry constructed with high-strength concrete masonry units.
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Fig. 12.8 shows the compressive strength results at 28 days curing. Although it seems that the compressive strength is influenced by the sand/binder mass ratio, the differences are
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2019年12月1日 The results show that the 0.16% PCE polymer additive leads to low cement weight loss at 800° Celsius, drastic increase of apparent and plastic viscosity, and significant improvement of compressive strength. ... Variation between the compressive strength of cement based grout for w/c = 0.6 and polymer content (a) Polymer A and (b)
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2021年4月6日 These grout specimens were cured for 7 days, 14 days, and 28 days period. The compressive strength of the total 27 grout cubes considering the triplet (3 × 3 × 3 = 27) was determined. Compressive strength test results of the grouts are presented in Table 7. Grout-I depicts maximum compressive strength among all the grouts.
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2022年2月7日 1. Introduction. A cementitious grouting material has the characteristics of good fluidity (vibration-free), micro expansion, the rapid development of early strength (the 3-day compressive strength is larger than 40 MPa), and high strength (greater than 60 MPa) after mixing with water in a certain proportion, and have been widely used in the
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2019年8月1日 The results of the study revealed that the grouted soil reached its maximum strength value at a relative density of 35%. This was due to the complete filling of the voids in the injected soils having a relative density of 35% with cement grout. The grout could not enter the interparticle voids of the sand having a relative density of 85%.
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2014年4月2日 In general, the compressive strength results are considered more reliable. The values of flexural strength and dynamic modulus of elasticity follow the rate of strength development, although the rate is different. ... The highest strength achieved was that of the grout mixture lime:pozzolan:cement (1:0.7:0.3 parts by weight), which exhibited 28 ...
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As a result of optimization studies, to produce DMC having high strength and low permeability, grout content should be consisting of 14% cement, 14% fly ash (ratio of fly ash in the binder is 50% ...
Read More2016年12月1日 In addition, for application of compressive strength and tensile strength less than 70MPa and 14MPa, both grouts can be considered as capable to serve its repair purpose after the grout cured for ...
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The results show that very high-strength blocks were not as efficient as medium-strength blocks and that there was a difference between the compressive strengths of ungrouted and grouted masonry ...
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2023年5月16日 The experimental results indicated that at prism compressive strengths near 13,780 kPa (2,000 psi), there was no statistical strength difference between prisms made with lightweight and normal weight grout. As a result, the authors suggest that for compressive strengths near 13,780 kPa (2,000 psi), lightweight grout should be a code
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The bond strength in case of 30 MPa grout was lower by approximately 63% for block BM4, 82% for block BM7, 21% for block BM16, 44% for block BV0 and 1% for block BV10. This finding of lesser bond ...
Read More2019年12月1日 The results show that the 0.16% PCE polymer additive leads to low cement weight loss at 800° Celsius, drastic increase of apparent and plastic viscosity, and significant improvement of compressive strength. ... Variation between the compressive strength of cement based grout for w/c = 0.6 and polymer content (a) Polymer A and (b)
Read More2022年2月7日 1. Introduction. A cementitious grouting material has the characteristics of good fluidity (vibration-free), micro expansion, the rapid development of early strength (the 3-day compressive strength is larger than 40 MPa), and high strength (greater than 60 MPa) after mixing with water in a certain proportion, and have been widely used in the
Read More2019年8月1日 The results of the study revealed that the grouted soil reached its maximum strength value at a relative density of 35%. This was due to the complete filling of the voids in the injected soils having a relative density of 35% with cement grout. The grout could not enter the interparticle voids of the sand having a relative density of 85%.
Read More2014年4月2日 In general, the compressive strength results are considered more reliable. The values of flexural strength and dynamic modulus of elasticity follow the rate of strength development, although the rate is different. ... The highest strength achieved was that of the grout mixture lime:pozzolan:cement (1:0.7:0.3 parts by weight), which exhibited 28 ...
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2023年2月28日 The calculated results demonstrate that the grout-reinforced body will fail in 29–63 years, which was far less than the concrete service life (100–120 years). In addition, the compressive strength obtained after the end of the service life was obtained as 9–27 MPa, less than the concrete strength at the same curing age.
Read MoreAs a result of optimization studies, to produce DMC having high strength and low permeability, grout content should be consisting of 14% cement, 14% fly ash (ratio of fly ash in the binder is 50% ...
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A. According to section 19.2.1.3 of ACI 318-19 the specified compressive strength shall be based on the 28-day test results unless otherwise specified in the construction documents. 3- or 7-day test results are used to monitor early strength gain, especially when high early-strength concrete is used. However, 3- and 7-day test results are not ...
Read More2023年5月16日 The experimental results indicated that at prism compressive strengths near 13,780 kPa (2,000 psi), there was no statistical strength difference between prisms made with lightweight and normal weight grout. As a result, the authors suggest that for compressive strengths near 13,780 kPa (2,000 psi), lightweight grout should be a code
Read MoreThe bond strength in case of 30 MPa grout was lower by approximately 63% for block BM4, 82% for block BM7, 21% for block BM16, 44% for block BV0 and 1% for block BV10. This finding of lesser bond ...
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2013年6月20日 Compressive Strength Testing of Grout. Two recent instances where 3.25 x 3.25 x 6.5-inch grout specimens achieved lower compressive strength at 28-days than at 7-days. Both sets were cast from 3,000-psi CMU block fill provided by a ready-mix plant at the same project. Both sets were cast in those cardboard set-of-4 molds.
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