A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stabilization of expansive soil using cementing material from rice husk ash and calcium carbide residue
https://orcid.org/0000-0002-3569-8408
https://orcid.org/0000-0001-5279-4541
Highlights A new cementing material combined with RHA and CCR has perfect mechanical properties. RHA-CCR is very beneficial to overcome expansion and cracking of expansive soil. Both UCS and shear strength have been greatly improved after stabilized by RHA-CCR. Stabilized mechanism are replacement, coagulation reaction and ion exchange.
Abstract In order to reduce geological disaster caused by expansive soil and utilize waste resources, a cementing material combined with rice husk ash(RHA) obtained from biomass power plants and calcium carbide residue(CCR) gained from acetylene plants, was used for stabilization of expansive soil. Based on compressive and flexural strength of RHA-CCR mortars, mixing ratio of RHA/CCR was adopted as 65:35 by weight for soil stabilization. Through a series of tests, the swelling-shrink and strength properties of stabilized expansive soil have been investigated. With increase of binding content, curing time and initial water content, swelling potential, swelling pressure, crack quantity and fineness of expansive soil lowered remarkably. Meanwhile, unconfined compressive strength, cohesion and internal friction angle improved significantly after adding RHA-CCR. From the perspective of strength improvement, blending content of 15% and initial water content of 1.2 times the optimum moisture content was recommended for stabilizing expansive soil. The mechanism of RHA-CCR to stabilize expansive soil involved replacement efficiency, coagulation reaction and ion exchange. In the future, stabilization of expansive soil using RHA-CCR will be highly concerned because of excellent performance, lowered construction and disposal costs, reduced environmental pollution.
Stabilization of expansive soil using cementing material from rice husk ash and calcium carbide residue
https://orcid.org/0000-0002-3569-8408
https://orcid.org/0000-0001-5279-4541
Highlights A new cementing material combined with RHA and CCR has perfect mechanical properties. RHA-CCR is very beneficial to overcome expansion and cracking of expansive soil. Both UCS and shear strength have been greatly improved after stabilized by RHA-CCR. Stabilized mechanism are replacement, coagulation reaction and ion exchange.
Abstract In order to reduce geological disaster caused by expansive soil and utilize waste resources, a cementing material combined with rice husk ash(RHA) obtained from biomass power plants and calcium carbide residue(CCR) gained from acetylene plants, was used for stabilization of expansive soil. Based on compressive and flexural strength of RHA-CCR mortars, mixing ratio of RHA/CCR was adopted as 65:35 by weight for soil stabilization. Through a series of tests, the swelling-shrink and strength properties of stabilized expansive soil have been investigated. With increase of binding content, curing time and initial water content, swelling potential, swelling pressure, crack quantity and fineness of expansive soil lowered remarkably. Meanwhile, unconfined compressive strength, cohesion and internal friction angle improved significantly after adding RHA-CCR. From the perspective of strength improvement, blending content of 15% and initial water content of 1.2 times the optimum moisture content was recommended for stabilizing expansive soil. The mechanism of RHA-CCR to stabilize expansive soil involved replacement efficiency, coagulation reaction and ion exchange. In the future, stabilization of expansive soil using RHA-CCR will be highly concerned because of excellent performance, lowered construction and disposal costs, reduced environmental pollution.
Stabilization of expansive soil using cementing material from rice husk ash and calcium carbide residue
https://orcid.org/0000-0002-3569-8408
https://orcid.org/0000-0001-5279-4541
Highlights A new cementing material combined with RHA and CCR has perfect mechanical properties. RHA-CCR is very beneficial to overcome expansion and cracking of expansive soil. Both UCS and shear strength have been greatly improved after stabilized by RHA-CCR. Stabilized mechanism are replacement, coagulation reaction and ion exchange.
Abstract In order to reduce geological disaster caused by expansive soil and utilize waste resources, a cementing material combined with rice husk ash(RHA) obtained from biomass power plants and calcium carbide residue(CCR) gained from acetylene plants, was used for stabilization of expansive soil. Based on compressive and flexural strength of RHA-CCR mortars, mixing ratio of RHA/CCR was adopted as 65:35 by weight for soil stabilization. Through a series of tests, the swelling-shrink and strength properties of stabilized expansive soil have been investigated. With increase of binding content, curing time and initial water content, swelling potential, swelling pressure, crack quantity and fineness of expansive soil lowered remarkably. Meanwhile, unconfined compressive strength, cohesion and internal friction angle improved significantly after adding RHA-CCR. From the perspective of strength improvement, blending content of 15% and initial water content of 1.2 times the optimum moisture content was recommended for stabilizing expansive soil. The mechanism of RHA-CCR to stabilize expansive soil involved replacement efficiency, coagulation reaction and ion exchange. In the future, stabilization of expansive soil using RHA-CCR will be highly concerned because of excellent performance, lowered construction and disposal costs, reduced environmental pollution.
Stabilization of expansive soil using cementing material from rice husk ash and calcium carbide residue
Liu, Yuyi (author) / Chang, Che-Way (author) / Namdar, Abdoullah (author) / She, Yuexin (author) / Lin, Chen-Hua (author) / Yuan, Xiang (author) / Yang, Qin (author)
Construction and Building Materials ; 221 ; 1-11
2019-05-25
11 pages
Article (Journal)
Electronic Resource
English
Cementing Material from Calcium Carbide Residue-Rice Husk Ash
| British Library Online Contents | 2003
Cementing Material from Calcium Carbide Residue-Rice Husk Ash
| Online Contents | 2003
Calcium Carbide Residue — A Cementing Agent for Sustainable Soil Stabilization
| British Library Online Contents | 2015
Stabilization of Expansive Soil with Lime and Rice Husk Ash
| British Library Conference Proceedings | 2000