Pervious concrete

About: Pervious concrete is a research topic. Over the lifetime, 2920 publications have been published within this topic receiving 27720 citations. The topic is also known as: porous concrete & permeable concrete.

Preparation method and application for fly ash based polymer cementing material and porous concrete material

Abstract: The invention discloses a preparation method and application for a fly ash based polymer cementing material and a porous concrete material. The fly ash based polymer cementing material is composed of fly ash, granulated blast-furnace slag, nanometer zeolite powder, gypsum powder, and a compound alkali activator prepared from potassium-sodium water glass and caustic alkali; porous concrete is prepared from the fly ash based polymer cementing material and special-grade coarse aggregates like basalt or granite, is applied in construction of road pavement and has the characteristics of high porosity, good water permeability, skid resistance and sound-absorptive and noise-reducing properties, high strength, stable volume, excellent durability, etc.; meanwhile, the fly ash based polymer porous concrete has simple preparation method and low production cost, and meets industrial production and construction requirements.

Long-life permeable concrete and production method thereof

Abstract: The invention discloses long-life permeable concrete and a production method thereof; the long-life permeable concrete is produced from, by weight, 1000-2000 parts of gravel, 150-400 parts of cement, 10-30 parts of gel reinforcing material, 0.2-1 part of emulsion, 400-1000 parts of water, and 0-12 parts of a colorant. The long-life permeable concrete provided herein has good compressive strength and high permeation coefficient, can meet the need of various projects for concrete permeability, is helpful for maintaining ecological balance and implementing sustainable development, is good in decoration effect, easy to maintain, high in freeze-thaw resistance, high in radiating property and high in bearing capacity, enables urban ecological environment to be effectively improved, is highly ecologically friendly and has a long life up to 8 years and longer.

MnROAD Cell 64 Pervious Concrete: Third Year Performance Report

Abstract: This report evaluates the first year performance of the Pervious Concrete test cell #64 located in the parking lot on the south side of the MnROAD pole barn. Performance measures utilized for this report include examination of stress-strain response through loading from the 80 kip MnROAD truck and Falling Weight Deflectometer (FWD). The FWD deflection basins were compared to those obtained for normal concrete of similar thickness design. The second performance measure was the vibrating wire strain gauge sensor response. Elastic modulus values were computed from the sensor data. In addition, petrographic analyses of cores taken from the test pad and pavements were performed to determine the macroscopic and microscopic characteristics of pervious concrete pavement after the first year. Furthermore, a surface rating of the pavement was performed to corroborate petrographic and freeze-thaw data in order to ascertain the cause of any structural anomalies within the pervious concrete structure. Overall, the pervious concrete cell #64 is performing well after its first year. Normal sanding and salting operations do not appear to have impacted the pore structure within the pervious concrete to date. However, a more quantitative method of measuring flow through the cell and base materials is needed before a final conclusion can be made about the enduring ability of pervious concrete to pass water. Such a quantitative flow measurement method is currently under development. The structure of the pervious concrete cell #64 remains strong after a year of FWD/MnROAD truck loading and normal usage by vehicular movement over the driveway. Microcracking observed from petrographics does not appear to be worsening. Spalling and raveling conditions appear to have stabilized and are surficial in nature. This report concludes that pervious concrete is performing well in cell 64, and with continuous monitoring there will be greater confidence in more low volume applications.

Water permeable concrete product for pavement and manufacturing method therefor

Abstract: PROBLEM TO BE SOLVED: To provide a water permeable concrete product for pavement applicable to a heavy traffic roadway and provide a manufacturing method therefor. SOLUTION: The concrete product for pavement formed by molding concrete into a predetermined shape is constituted into a composite member whose binder of concrete molded object is cement and asphalt emulsion. In the manufacturing method therefor, cement of 1 to 25 mass parts and asphalt emulsion of 1 to 25 mass parts and admixture for cement as required are mixed with aggregate of 100 mass parts, vibration and compression force are applied to the mixture in a predetermined mold, and a molding removed from the mold after molding is cured at 5 to 80°C. COPYRIGHT: (C)2003,JPO

Winter temperature prediction for near-surface depth of pervious concrete pavement

Abstract: Pervious concrete pavement (PCP) consists of a highly porous concrete slab, placed on a permeable base layer. This permeable pavement system allows storm water runoff to infiltrate through the pave...